SFTPClient Class

Properties Methods Events Config Settings Errors

The SFTPClient class can be used to transfer files to and from secure file transfer protocol (SFTP) servers.

Syntax

ipworksedi.sftpclient()

Remarks

The SFTPClient class is the Secure Shell (SSH)-enabled equivalent of the IPWorks FTP class. The SSHHost and SSHPort properties specify which Secure Shell (SSH) server to use. The SSHUser and SSHPassword properties allow the client to authenticate itself with the server. The SSHServerAuthentication event or SSHAcceptServerHostKey property allow you to check the server identity. Finally, the SSHStatus event provides information about the SSH handshake.

The SFTPClient class implements a standard SSH file transfer client.

The first step in using the class is specifying the SSHHost, SSHUser, and SSHPassword. The file to upload to or download from is given by the RemoteFile property. The file to download to or upload from is specified by LocalFile. The current path in the server is specified by the RemotePath property.

If LocalFile is set to something other than an empty string, then files are received in LocalFile; otherwise, the data are received through the Transfer event. StartTransfer and EndTransfer are fired at the beginning and end of transmission.

Directory listings are received through the DirList event.

Property List

The following is the full list of the properties of the class with short descriptions. Click on the links for further details.


Connected	Whether the class is connected.
DirList	Collection of entries resulting in the last directory listing.
FileAttributes	The attributes of the RemoteFile .
Firewall	A set of properties related to firewall access.
Idle	The current status of the class.
LocalFile	The path to a local file for upload or download.
LocalHost	The name of the local host or user-assigned IP interface through which connections are initiated or accepted.
LocalPort	The TCP port in the local host where the class binds.
Overwrite	The value indicating whether or not the class should overwrite files during transfer.
RemoteFile	The name of the remote file for uploading or downloading.
RemotePath	The current path in the secure file transfer protocol (SFTP) server.
SSHAcceptServerHostKey	Instructs the class to accept the server host key that matches the supplied key.
SSHAuthMode	The authentication method to be used with the class when calling SSHLogon .
SSHCert	A certificate to be used for authenticating the SSHUser .
SSHCompressionAlgorithms	The comma-separated list containing all allowable compression algorithms.
SSHEncryptionAlgorithms	The comma-separated list containing all allowable encryption algorithms.
SSHHost	The address of the Secure Shell (SSH) host.
SSHPassword	The password for Secure Shell (SSH) password-based authentication.
SSHPort	The port on the Secure Shell (SSH) server where the SSH service is running; by default, 22.
SSHUser	The username for Secure Shell (SSH) authentication.
StartByte	The offset in bytes at which to begin the upload or download.
Timeout	The timeout for the class.

Method List

The following is the full list of the methods of the class with short descriptions. Click on the links for further details.


Append	Append data from LocalFile to a remote file RemoteFile on a Secure File Transfer Protocol (SFTP) server.
ChangeRemotePath	Changes the current path on the server.
CheckFileExists	Returns if the file specified by RemoteFile exists on the remote server.
Config	Sets or retrieves a configuration setting.
Connect	Connects to the Secure Shell (SSH) host without logging in.
CreateFile	Creates a file on the Secure File Transfer Protocol (SFTP) server.
DecodePacket	Decodes a hex-encoded Secure Shell (SSH) packet.
DeleteFile	Delete a file specified by FileName from a Secure File Transfer Protocol (SFTP) server.
Disconnect	Disconnects from the server without first logging off.
DoEvents	This method processes events from the internal message queue.
Download	Download a RemoteFile from a Secure File Transfer Protocol (SFTP) server.
DownloadRange	DownloadRange facilitates the partial downloading of a remote file from a Secure File Transfer Protocol (SFTP) server.
EncodePacket	Hex encodes a Secure Shell (SSH) packet.
GetSSHParam	Reads a field from a Secure Shell (SSH) packet's payload.
GetSSHParamBytes	Reads a field from a Secure Shell (SSH) packet's payload.
Interrupt	This method interrupts the current method.
ListDirectory	List the current directory specified by RemotePath on a Secure File Transfer Protocol (SFTP) server.
MakeDirectory	Creates a directory on a Secure File Transfer Protocol (SFTP) server.
QueryFileAttributes	Queries the server for the attributes of RemoteFile .
QueueFile	Adds a file to the transfer queue.
RemoveDirectory	Remove a directory specified by DirName from a secure file transfer protocol (SFTP) server.
RenameFile	Change the name of RemoteFile to NewName .
Reset	This method will reset the class.
ResetQueue	Resets the queue of files to be transferred.
SetSSHParam	Writes a field to the end of a payload.
SSHLogoff	Logs off from the Secure Shell (SSH) server.
SSHLogon	Logs on to the SSHHost using the current SSHUser and SSHPassword .
UpdateFileAttributes	Instructs the class to send the FileAttributes to the server.
Upload	Upload a file specified by LocalFile to a secure file transfer protocol (SFTP) server.
UploadRange	UploadRange inserts data into a remote file on a secure file transfer protocol (SFTP) server.

Event List

The following is the full list of the events fired by the class with short descriptions. Click on the links for further details.


Connected	Fired immediately after a connection completes (or fails).
ConnectionStatus	Fired to indicate changes in the connection state.
DirList	Fired when a directory entry is received.
Disconnected	Fired when a connection is closed.
EndTransfer	Fired when a file completes downloading or uploading.
Error	Fired when errors occur during data delivery.
Log	Fired once for each log message.
SSHCustomAuth	Fired when the class is doing a custom authentication.
SSHKeyboardInteractive	Fired when the class receives a request for user input from the server.
SSHServerAuthentication	Fired after the server presents its public key to the client.
SSHStatus	Fired to track the progress of the secure connection.
StartTransfer	Fired when a file starts downloading or uploading.
Transfer	Fired during file download or upload.

Config Settings

The following is a list of config settings for the class with short descriptions. Click on the links for further details.


AllowBackslashInName	Whether backslashes are allowed in folder and file names.
AsyncTransfer	Controls whether simultatenous requests are made to read or write files.
AttrAccessTime	Can be queried for the AccessTime file attribute during the DirList event.
AttrCreationTime	Can be queried for the CreationTime file attribute during the DirList event.
AttrFileType	Can be queried for the FileType file attribute during the DirList event.
AttrGroupId	Can be queried for the GroupId file attribute during the DirList event.
AttrLinkCount	Can be queried for the LinkCount file attribute during the DirList event.
AttrOwnerId	Can be queried for the OwnerId file attribute during the DirList event.
AttrPermission	Can be queried for the Permissions file attribute during the DirList event.
CheckFileHash	Compares a server-computed hash with a hash calculated locally.
CopyRemoteData	Copies a specified range of bytes in one file to another.
CopyRemoteFile	Copies a file from one location to another directly on the server.
DisableRealPath	Controls whether or not the SSH_FXP_REALPATH request is sent.
ExcludeFileMask	Specifies a file mask for excluding files in directory listings.
FileMaskDelimiter	Specifies a delimiter to use for setting multiple file masks in the RemoteFile property.
FiletimeFormat	Specifies the format to use when returning filetime strings.
FreeSpace	The free space on the remote server in bytes.
GetSpaceInfo	Queries the server for drive usage information.
GetSymlinkAttrs	Whether to get the attributes of the symbolic link, or the resource pointed to by the link.
IgnoreFileMaskCasing	Controls whether or not the file mask is case sensitive.
LocalEOL	When TransferMode is set, this specifies the line ending for the local system.
LogSFTPFileData	Whether SFTP file data is present in Debug logs.
MaskSensitiveData	Masks passwords in logs.
MaxFileData	Specifies the maximum payload size of an SFTP packet.
MaxOutstandingPackets	Sets the maximum number of simultaneous read or write requests allowed.
NegotiatedProtocolVersion	The negotiated SFTP version.
NormalizeRemotePath	Whether to normalize the RemotePath.
PreserveFileTime	Preserves the file's timestamps during transfer.
ProtocolVersion	The highest allowable SFTP version to use.
ReadLink	This settings returns the target of a specified symbolic link.
RealTimeUpload	Enables real time uploading.
RealTimeUploadAgeLimit	The age limit in seconds when using RealTimeUpload.
ServerEOL	When TransferMode is set, this specifies the line ending for the remote system.
SimultaneousTransferLimit	The maximum number of simultaneous file transfers.
TotalSpace	The total space on the remote server in bytes.
TransferMode	The transfer mode (ASCII or Binary).
TransferredDataLimit	Specifies the maximum number of bytes to download from the remote file.
UseFxpStat	Whether SSH_FXP_STAT is sent.
UseServerFileTime	Controls if the file time returned from the server is converted to local time or not.
UseServerFileTime	Controls if the file time returned from the server is converted to local time or not.
ChannelDataEOL[ChannelId]	Used to break the incoming data stream into chunks.
ChannelDataEOLFound[ChannelId]	Determines if ChannelDataEOL was found.
ClientSSHVersionString	The SSH version string used by the class.
DoNotRepeatAuthMethods	Whether the class will repeat authentication methods during multifactor authentication.
EnablePageantAuth	Whether to use a key stored in Pageant to perform client authentication.
KerberosDelegation	If true, asks for credentials with delegation enabled during authentication.
KerberosRealm	The fully qualified domain name of the Kerberos Realm to use for GSSAPI authentication.
KerberosSPN	The Kerberos Service Principal Name of the SSH host.
KeyRenegotiationThreshold	Sets the threshold for the SSH Key Renegotiation.
LogLevel	Specifies the level of detail that is logged.
MaxChannelDataLength[ChannelId]	The maximum amount of data to accumulate when no ChannelDataEOL is found.
MaxPacketSize	The maximum packet size of the channel, in bytes.
MaxWindowSize	The maximum window size allowed for the channel, in bytes.
NegotiatedStrictKex	Returns whether strict key exchange was negotiated to be used.
PasswordPrompt	The text of the password prompt used in keyboard-interactive authentication.
PreferredDHGroupBits	The size (in bits) of the preferred modulus (p) to request from the server.
RecordLength	The length of received data records.
ServerSSHVersionString	The remote host's SSH version string.
SignedSSHCert	The CA signed client public key used when authenticating.
SSHAcceptAnyServerHostKey	If set the class will accept any key presented by the server.
SSHAcceptServerCAKey	The CA public key that signed the server's host key.
SSHAcceptServerHostKeyFingerPrint	The fingerprint of the server key to accept.
SSHFingerprintHashAlgorithm	The algorithm used to calculate the fingerprint.
SSHFingerprintMD5	The server hostkey's MD5 fingerprint.
SSHFingerprintSHA1	The server hostkey's SHA1 fingerprint.
SSHFingerprintSHA256	The server hostkey's SHA256 fingerprint.
SSHKeepAliveCountMax	The maximum number of keep alive packets to send without a response.
SSHKeepAliveInterval	The interval between keep alive packets.
SSHKeyExchangeAlgorithms	Specifies the supported key exchange algorithms.
SSHKeyRenegotiate	Causes the class to renegotiate the SSH keys.
SSHMacAlgorithms	Specifies the supported Mac algorithms.
SSHPubKeyAuthSigAlgorithms	Specifies the enabled signature algorithms that may be used when attempting public key authentication.
SSHPublicKeyAlgorithms	Specifies the supported public key algorithms for the server's public key.
SSHVersionPattern	The pattern used to match the remote host's version string.
TryAllAvailableAuthMethods	If set to true, the class will try all available authentication methods.
UseStrictKeyExchange	Specifies how strict key exchange is supported.
WaitForChannelClose	Whether to wait for channels to be closed before disconnected.
WaitForServerDisconnect	Whether to wait for the server to close the connection.
BuildInfo	Information about the product's build.
CodePage	The system code page used for Unicode to Multibyte translations.
LicenseInfo	Information about the current license.
MaskSensitiveData	Whether sensitive data is masked in log messages.
UseInternalSecurityAPI	Whether or not to use the system security libraries or an internal implementation.

SFTPClient.Connected Property

Whether the class is connected.

Syntax

isConnected(): boolean;

Default Value

FALSE

Remarks

This property is used to determine whether or not the class is connected to the remote host. Use the Connect and Disconnect methods to manage the connection.

This property is read-only and not available at design time.

SFTPClient.DirList Property

Collection of entries resulting in the last directory listing.

Syntax

getDirList(): DirEntryList;

Default Value

Remarks

This collection of entries is returned after a response is received from the server after a call to ListDirectory. The collection is made up of entries for each listing in the current directory, which is specified by the RemotePath property.

MaxDirEntries can be used to control the number of directory listings saved.

This property is read-only and not available at design time.

Please refer to the DirEntry type for a complete list of fields.

SFTPClient.FileAttributes Property

The attributes of the RemoteFile .

Syntax

getFileAttributes(): SFTPFileAttributes;
setFileAttributes(fileAttributes: SFTPFileAttributes): void;

Default Value

Remarks

This property holds the attributes for the file specified by RemoteFile. Before querying this property, first call QueryFileAttributes to retrieve the attributes from the server.

To modify the attributes of the file, you may set FileAttributes and then call UpdateFileAttributes.

This property is not available at design time.

Please refer to the SFTPFileAttributes type for a complete list of fields.

SFTPClient.Firewall Property

A set of properties related to firewall access.

Syntax

getFirewall(): Firewall;
setFirewall(firewall: Firewall): void;

Default Value

Remarks

This is a Firewall-type property, which contains fields describing the firewall through which the class will attempt to connect.

Please refer to the Firewall type for a complete list of fields.

SFTPClient.Idle Property

The current status of the class.

Syntax

isIdle(): boolean;

Default Value

TRUE

Remarks

This property will be False if the component is currently busy (communicating or waiting for an answer), and True at all other times.

This property is read-only.

SFTPClient.LocalFile Property

The path to a local file for upload or download.

Syntax

getLocalFile(): string;
setLocalFile(localFile: string): void;

Default Value

Remarks

The LocalFile property is used by the Upload and Download methods. The file will be overwritten only if the Overwrite property is set to True.

Example. Setting LocalFile:

SFTPControl.Localfile = "C:\localfile.txt" SFTPControl.RemoteFile = "remotefile.txt" SFTPControl.Download() SFTPControl.Localfile = "C:\localfile2.txt" SFTPControl.RemoteFile = "folder/remotefile2.txt" SFTPControl.Download()

SFTPClient.LocalHost Property

The name of the local host or user-assigned IP interface through which connections are initiated or accepted.

Syntax

getLocalHost(): string;
setLocalHost(localHost: string): void;

Default Value

Remarks

This property contains the name of the local host as obtained by the gethostname() system call, or if the user has assigned an IP address, the value of that address.

In multihomed hosts (machines with more than one IP interface) setting LocalHost to the IP address of an interface will make the class initiate connections (or accept in the case of server classs) only through that interface. It is recommended to provide an IP address rather than a hostname when setting this property to ensure the desired interface is used.

If the class is connected, the LocalHost property shows the IP address of the interface through which the connection is made in internet dotted format (aaa.bbb.ccc.ddd). In most cases, this is the address of the local host, except for multihomed hosts (machines with more than one IP interface).

Note: LocalHost is not persistent. You must always set it in code, and never in the property window.

SFTPClient.LocalPort Property

The TCP port in the local host where the class binds.

Syntax

getLocalPort(): number;
setLocalPort(localPort: number): void;

Default Value

Remarks

This property must be set before a connection is attempted. It instructs the class to bind to a specific port (or communication endpoint) in the local machine.

Setting this property to 0 (default) enables the system to choose an open port at random. The chosen port will be returned by the LocalPort property after the connection is established.

LocalPort cannot be changed once a connection is made. Any attempt to set this property when a connection is active will generate an error.

This property is useful when trying to connect to services that require a trusted port on the client side.

SFTPClient.Overwrite Property

The value indicating whether or not the class should overwrite files during transfer.

Syntax

isOverwrite(): boolean;
setOverwrite(overwrite: boolean): void;

Default Value

FALSE

Remarks

This property is a value indicating whether or not the class should overwrite LocalFile when downloading and RemoteFile when uploading. If Overwrite is False, an error will be thrown whenever LocalFile exists before a download operation.

SFTPClient.RemoteFile Property

The name of the remote file for uploading or downloading.

Syntax

getRemoteFile(): string;
setRemoteFile(remoteFile: string): void;

Default Value

Remarks

The RemoteFile is either an absolute file path or a relative path based on RemotePath.

A number of methods use RemoteFile as an argument.

Example 1. Setting RemoteFile:

Note: This property will also act as a file mask when performing ListDirectory.

Example 2. Using RemoteFile as a File Mask: SFTPControl.RemoteFile = "*.txt" SFTPControl.ListDirectory()

The following special characters are supported for pattern matching:


?	Any single character.
*	Any characters or no characters (e.g., C*t matches Cat, Cot, Coast, Ct).
[,-]	A range of characters (e.g., [a-z], [a], [0-9], [0-9,a-d,f,r-z]).
\	The slash is ignored and exact matching is performed on the next character.

If these characters need to be used as a literal in a pattern, then they must be escaped by surrounding them with brackets []. Note: "]" and "-" do not need to be escaped. See below for the escape sequences:


Character	Escape Sequence
?	[?]
*	[*]
[	[[]
\	[\]

For example, to match the value [Something].txt, specify the pattern [[]Something].txt.

SFTPClient.RemotePath Property

The current path in the secure file transfer protocol (SFTP) server.

Syntax

getRemotePath(): string;

Default Value

Remarks

The RemotePath shows the current working directory on the SFTP server. The ChangeRemotePath method can be used to change the working directory to an absolute directory path or to a relative path with respect to the current value of RemotePath.

Example. Changing Directory:

sftp1.SSHLogon("sftp.server.net", 22); sftp1.ChangeRemotePath("/home/user");

This property is read-only.

SFTPClient.SSHAcceptServerHostKey Property

Instructs the class to accept the server host key that matches the supplied key.

Syntax

getSSHAcceptServerHostKey(): Certificate;
setSSHAcceptServerHostKey(SSHAcceptServerHostKey: Certificate): void;

Default Value

Remarks

If the host key that will be used by the server is known in advance, this property may be set to accept the expected key. Otherwise, the SSHServerAuthentication event should be trapped, and the key should be accepted or refused in the event.

If this property is not set and the SSHServerAuthentication event is not trapped, the server will not be authenticated and the connection will be terminated by the client.

Please refer to the Certificate type for a complete list of fields.

SFTPClient.SSHAuthMode Property

The authentication method to be used with the class when calling SSHLogon .

Syntax

getSSHAuthMode(): SFTPClientSSHAuthModes;
setSSHAuthMode(SSHAuthMode: SFTPClientSSHAuthModes): void;

enum SFTPClientSSHAuthModes {
  amNone,
  amMultiFactor,
  amPassword,
  amPublicKey,
  amKeyboardInteractive,
  amGSSAPIWithMic,
  amGSSAPIKeyex,
  amCustom
}

Default Value

Remarks

The Secure Shell (SSH) Authentication specification (RFC 4252) specifies multiple methods by which a user can be authenticated by an SSH server. When a call is made to SSHLogon, the class will connect to the SSH server and establish the security layer. After the connection has been secured, the client will send an authentication request to the SSHHost containing the SSHUser. The server will respond containing a list of methods by which that user may be authenticated.

The class will attempt to authenticate the user by one of those methods based on the value of SSHAuthMode and other property values supplied by the user. Currently, the class supports the following authentication methods:


`amNone` (0)	No authentication will be performed. The current SSHUser value is ignored, and the connection will be logged as anonymous.
`amMultiFactor` (1)	This allows the class to attempt a multistep authentication process. The class will send authentication data to the server based on the list of methods allowed for the current user and the authentication property values supplied. The class will continue to send authentication data until the server acknowledges authentication success. If the server rejects an authentication step, the class .
`amPassword` (2)	The class will use the values of SSHUser and SSHPassword to authenticate the user.
`amPublicKey` (3)	The class will use the values of SSHUser and the SSHCert* properties to authenticate the user. the SSHCert* properties must have a private key available for this authentication method to succeed.
`amKeyboardInteractive` (4)	At the time of authentication, the class will fire the SSHKeyboardInteractive event containing instructions on how to complete the authentication step. Note: `amKeyboardInteractive` is not supported in SSHTunnel.
`amGSSAPIWithMic` (5)	This allows the class to attempt Kerberos authentication using the GSSAPI-WITH-MIC scheme. The client will try Kerberos authentication using the value of SSHUser (single sign-on), or if SSHPassword is specified as well, it will try Kerberos authentication with alternate credentials. This is currently supported only on Windows, unless using the Java edition, which also provides support for Linux and macOS.
`amGSSAPIKeyex` (6)	This allows the class to attempt Kerberos authentication using the GSSAPIKeyex scheme. The client will try Kerberos authentication using the value of SSHUser (single sign-on), or if SSHPassword is specified as well, it will try Kerberos authentication with alternate credentials. This is currently supported only on Windows, unless using the Java edition, which also provides support for Linux and macOS.
`amCustom` (99)	This allows the class caller to take over the authentication process completely. When amCustom is set, the class will fire the SSHCustomAuth event as necessary to complete the authentication process.

Example 1. User/Password Authentication: Control.SSHAuthMode = SftpSSHAuthModes.amPassword Control.SSHUser = "username" Control.SSHPassword = "password" Control.SSHLogon("server", 22) Example 2. Public Key Authentication: Control.SSHAuthMode = SftpSSHAuthModes.amPublicKey Control.SSHUser = "username" Control.SSHCertStoreType = SSHCertStoreTypes.cstPFXFile; Control.SSHCertStore = "cert.pfx"; Control.SSHCertStorePassword = "certpassword"; Control.SSHCertSubject = "*"; Control.SSHLogon("server", 22)

SFTPClient.SSHCert Property

A certificate to be used for authenticating the SSHUser .

Syntax

getSSHCert(): Certificate;
setSSHCert(SSHCert: Certificate): void;

Default Value

Remarks

To use public key authentication, SSHCert must contain a Certificate with a valid private key. The certificate's public key value is sent to the server along with a signature produced using the private key. The server will first check to see if the public key values match what is known for the user, and then it will attempt to use those values to verify the signature.

Please refer to the Certificate type for a complete list of fields.

SFTPClient.SSHCompressionAlgorithms Property

The comma-separated list containing all allowable compression algorithms.

Syntax

getSSHCompressionAlgorithms(): string;
setSSHCompressionAlgorithms(SSHCompressionAlgorithms: string): void;

Default Value

"none,zlib"

Remarks

During the Secure Shell (SSH) handshake, this list will be used to negotiate the compression algorithm to be used between the client and server. This list is used for both directions: client to server and server to client. When negotiating algorithms, each side sends a list of all algorithms it supports or allows. The algorithm chosen for each direction is the first algorithm to appear in the sender's list that the receiver supports. Therefore, it is important to list multiple algorithms in preferential order. If no algorithm can be agreed on, the class will raise an error and the connection will be aborted.

At least one supported algorithm must appear in this list. The following compression algorithms are supported by the class:

zlib
zlib@openssh.com
none

SFTPClient.SSHEncryptionAlgorithms Property

The comma-separated list containing all allowable encryption algorithms.

Syntax

getSSHEncryptionAlgorithms(): string;
setSSHEncryptionAlgorithms(SSHEncryptionAlgorithms: string): void;

Default Value

"aes256-ctr,aes192-ctr,aes128-ctr,3des-ctr,arcfour256,arcfour128,arcfour,aes256-gcm@openssh.com,aes128-gcm@openssh.com,chacha20-poly1305@openssh.com"

Remarks

During the Secure Shell (SSH) handshake, this list will be used to negotiate the encryption algorithm to be used between the client and server. This list is used for both directions: client to server and server to client. When negotiating algorithms, each side sends a list of all algorithms it supports or allows. The algorithm chosen for each direction is the first algorithm to appear in the sender's list that the receiver supports. Therefore, it is important to list multiple algorithms in preferential order. If no algorithm can be agreed on, the class will raise an error and the connection will be aborted.

At least one supported algorithm must appear in this list. The following encryption algorithms are supported by the class:


`aes256-ctr`	256-bit AES encryption in CTR mode.
`aes256-cbc`	256-bit AES encryption in CBC mode.
`aes192-ctr`	192-bit AES encryption in CTR mode.
`aes192-cbc`	192-bit AES encryption in CBC mode.
`aes128-ctr`	128-bit AES encryption in CTR mode.
`aes128-cbc`	128-bit AES encryption in CBC mode.
`3des-ctr`	192-bit (3-key) triple DES encryption in CTR mode.
`3des-cbc`	192-bit (3-key) triple DES encryption in CBC mode.
`cast128-cbc`	CAST-128 encryption.
`blowfish-cbc`	Blowfish encryption.
`arcfour`	ARC4 encryption.
`arcfour128`	128-bit ARC4 encryption.
`arcfour256`	256-bit ARC4 encryption.
`aes256-gcm@openssh.com`	256-bit AES encryption in GCM mode.
`aes128-gcm@openssh.com`	128-bit AES encryption in GCM mode.
`chacha20-poly1305@openssh.com`	ChaCha20 with Poly1305-AES encryption.

SFTPClient.SSHHost Property

The address of the Secure Shell (SSH) host.

Syntax

getSSHHost(): string;
setSSHHost(SSHHost: string): void;

Default Value

Remarks

The SSHHost property specifies the IP address (IP number in dotted internet format) or domain name of the remote host. It is set before a connection is attempted and cannot be changed once a connection is established.

If the SSHHost property is set to a domain name, a DNS request is initiated, and upon successful termination of the request, the SSHHost property is set to the corresponding address. If the search is not successful, an error is returned.

The SSHHost must be the same host that will be assumed for SSH as for the remote service being connected to.

SFTPClient.SSHPassword Property

The password for Secure Shell (SSH) password-based authentication.

Syntax

getSSHPassword(): string;
setSSHPassword(SSHPassword: string): void;

Default Value

Remarks

SSHPassword specifies the password that is used to authenticate the client to the SSH server.

SFTPClient.SSHPort Property

The port on the Secure Shell (SSH) server where the SSH service is running; by default, 22.

Syntax

getSSHPort(): number;
setSSHPort(SSHPort: number): void;

Default Value

Remarks

The SSHPort specifies a service port on the SSH host to connect to.

A valid port number (a value between 1 and 65535) is required for the connection to take place. The property must be set before a connection is attempted and cannot be changed once a connection is established. Any attempt to change this property while connected will fail with an error.

SFTPClient.SSHUser Property

The username for Secure Shell (SSH) authentication.

Syntax

getSSHUser(): string;
setSSHUser(SSHUser: string): void;

Default Value

Remarks

SSHUser specifies the username that is used to authenticate the client to the SSH server. This property is required.

SFTPClient.StartByte Property

The offset in bytes at which to begin the upload or download.

Syntax

getStartByte(): number;
setStartByte(startByte: number): void;

Default Value

Remarks

The StartByte property is used by the Upload and Download methods to determine at what offset to begin the transfer. This allows for resuming both uploads and downloads. The value of this property is reset to 0 after a successful transfer. StartByte is not valid for use with Append.

When downloading, this property can be used in conjunction with the TransferredDataLimit configuration setting to download only a specific range of data from the current RemoteFile.

SFTPClient.Timeout Property

The timeout for the class.

Syntax

getTimeout(): number;
setTimeout(timeout: number): void;

Default Value

Remarks

If the Timeout property is set to 0, all operations will run uninterrupted until successful completion or an error condition is encountered.

If Timeout is set to a positive value, the class will wait for the operation to complete before returning control.

The class will use DoEvents to enter an efficient wait loop during any potential waiting period, making sure that all system events are processed immediately as they arrive. This ensures that the host application does not freeze and remains responsive.

If Timeout expires, and the operation is not yet complete, the class .

Note: By default, all timeouts are inactivity timeouts, that is, the timeout period is extended by Timeout seconds when any amount of data is successfully sent or received.

The default value for the Timeout property is 60 seconds.

SFTPClient.append Method

Append data from LocalFile to a remote file RemoteFile on a Secure File Transfer Protocol (SFTP) server.

Syntax

async sftpclient.append(): Promise<void>

Remarks

This method is similar to the Upload method, but the local file specified by LocalFile is appended to RemoteFile on the server as opposed to replacing it as with the Upload method. RemoteFile is either an absolute path on the server, or a path relative to RemotePath. The server will create a file with that name if it does not already exist (similar to upload).

If a Secure Shell (SSH) session is not in place, one is automatically created by the component first.

SFTPClient.changeRemotePath Method

Changes the current path on the server.

Syntax

async sftpclient.changeRemotePath(remotePath : string): Promise<void>

Remarks

This method changes the current path on the server to the specified RemotePath. When called, the class will issue a command to the server to change the directory. The RemotePath parameter may hold an absolute or relative path.

Absolute Paths

If the path begins with a /, it is considered an absolute path and must specify the entire path from the root of the server. For example:

component.ChangeRemotePath("/home/testuser/myfolder");

Relative Paths

If the path does not begin with a /, it is considered a relative path and is resolved in relation to the current directory. For instance, a value of myfolder will indicate a subfolder of the current directory. The special value .. refers to the parent directory of the current path. For example:

//Change to the 'myfolder' sub-directory component.ChangeRemotePath("myfolder"); //Navigate up two levels and then into the 'another/folder' path. component.ChangeRemotePath("../../another/folder");

SFTPClient.checkFileExists Method

Returns if the file specified by RemoteFile exists on the remote server.

Syntax

async sftpclient.checkFileExists(): Promise<boolean>

Remarks

This property returns true if the file exists on the remote server. It returns false if the file does not exist. You must specify the file you wish to check by setting the RemoteFile before calling this method.

If no session is in place, the value of this property will always be false.

SFTPClient.config Method

Sets or retrieves a configuration setting.

Syntax

async sftpclient.config(configurationString : string): Promise<string>

Remarks

Config is a generic method available in every class. It is used to set and retrieve configuration settings for the class.

These settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the class, access to these internal properties is provided through the Config method.

To set a configuration setting named PROPERTY, you must call Config("PROPERTY=VALUE"), where VALUE is the value of the setting expressed as a string. For boolean values, use the strings "True", "False", "0", "1", "Yes", or "No" (case does not matter).

To read (query) the value of a configuration setting, you must call Config("PROPERTY"). The value will be returned as a string.

SFTPClient.connect Method

Connects to the Secure Shell (SSH) host without logging in.

Syntax

async sftpclient.connect(): Promise<void>

Remarks

This method establishes a connection with the SSHHost but does not log in. In most cases, it is recommended to use the SSHLogon method, which will both establish a connection and log in to the server.

This method may be useful in cases in which it is desirable to separate the connection and logon operations--for instance, confirming a host is available by first creating the connection.

SFTPClient.createFile Method

Creates a file on the Secure File Transfer Protocol (SFTP) server.

Syntax

async sftpclient.createFile(fileName : string): Promise<void>

Remarks

This method creates an empty file on the server with the name specified by the FileName parameter.

To upload a file with content, use Upload instead.

SFTPClient.decodePacket Method

Decodes a hex-encoded Secure Shell (SSH) packet.

Syntax

sftpclient.decodePacket(encodedPacket : string): Uint8Array

Remarks

This method is used to decode an SSH packet created by EncodePacket.

Note: This method is applicable only for reading and creating Secure Shell (SSH) packets for use within the SSHCustomAuth event.

SFTPClient.deleteFile Method

Delete a file specified by FileName from a Secure File Transfer Protocol (SFTP) server.

Syntax

async sftpclient.deleteFile(fileName : string): Promise<void>

Remarks

The remote file or directory specified by FileName is deleted. FileName is either an absolute path on the server or a path relative to RemotePath.

If a Secure Shell (SSH) session is not in place, one is automatically created by the component first.

SFTPClient.disconnect Method

Disconnects from the server without first logging off.

Syntax

async sftpclient.disconnect(): Promise<void>

Remarks

This method immediately disconnects from the server without first logging off.

In most cases, the SSHLogoff method should be used to log off and disconnect from the server. Call the Disconnect method in cases in which it is desirable to immediately disconnect without first logging off.

SFTPClient.doEvents Method

This method processes events from the internal message queue.

Syntax

async sftpclient.doEvents(): Promise<void>

Remarks

When DoEvents is called, the class processes any available events. If no events are available, it waits for a preset period of time, and then returns.

SFTPClient.download Method

Download a RemoteFile from a Secure File Transfer Protocol (SFTP) server.

Syntax

async sftpclient.download(): Promise<void>

Remarks

The remote file specified by RemoteFile is downloaded to the local file specified by LocalFile, or it is retrieved through the Transfer event, if the LocalFile property is "" (empty string). RemoteFile is either an absolute path on the server or is a path relative to RemotePath.

If a Secure Shell (SSH) session is not in place, one is automatically created by the component first.

Example. Download a File:

SFTPClient.downloadRange Method

DownloadRange facilitates the partial downloading of a remote file from a Secure File Transfer Protocol (SFTP) server.

Syntax

async sftpclient.downloadRange(path : string, fileName : string, startByte : number, count : number, buffer : Uint8Array): Promise<number>

Remarks

This method enables downloading a specific segment of a remote file specified by Path and FileName. StartByte is the offset (in bytes) relative to the beginning of the file from where to start reading, and Count is the number of bytes to read into the specified Buffer.

This functionality is particularly useful for efficient management of large files and targeted data retrieval within them.

Note: If the requested range extends beyond the end of the file, only the available bytes will be returned.

SFTPClient.encodePacket Method

Hex encodes a Secure Shell (SSH) packet.

Syntax

sftpclient.encodePacket(packet : Uint8Array): string

Remarks

This method is used to encode a raw SSH packet created by SetSSHParam.

Note: This method is applicable only for reading and creating Secure Shell (SSH) packets for use within the SSHCustomAuth event.

SFTPClient.getSSHParam Method

Reads a field from a Secure Shell (SSH) packet's payload.

Syntax

sftpclient.getSSHParam(payload : Uint8Array, field : string): string

Remarks

This method is used to read the value of a particular field from an SSH packet's payload. Payload should contain the full payload of a packet received by an event such as SSHChannelRequest. Field is the name of a field to be read out of the packet.

The following is a list of the names of well-known channel request field names and their encodings:


ChannelId (`int32`)	The Id of the channel that received the packet.
RequestType (`string`)	The type of channel requested.
WantsReply (`boolean`)	Whether or not the client wants a reply to the request.

The remaining fields that are available in the payload are dependent on the value of RequestType.

pty-req

Pty-req is a request to open a pseudo terminal on the specified channel. The following fields are available:


TerminalType (`string`)	The type of terminal being requested (e.g., "vt100").
TerminalWidthCharacters (`int32`)	The width, in characters, of the terminal to be opened.
TerminalHeightRows (`int32`)	The height, in rows, of the terminal to be opened.
TerminalWidthPixels (`int32`)	The width, in pixels, of the terminal to be opened.
TerminalHeightPixels (`int32`)	The height, in pixels, of the terminal to be opened.
TerminalModes (`string`)	A list of op-val (int32-byte) encoded modes to be used by the terminal.

x11-req

X11-req is a request to forward x11 sessions over a channel. The following fields are available:


SingleConnection (`boolean`)	Disallows more than one connection to be forwarded by the channel.
X11AuthProtocol (`string`)	The authentication protocol to be used (e.g., "MIT-MAGIC-COOKIE-1").
X11AuthCookie (`string`)	A hexadecimal-encoded cookie to be used for authentication.
X11ScreenNumber (`int32`)	The x11 screen number to be used.

env

Env is a request to set an environment variable to be passed into a shell that may be started later. The following fields are available:


VariableName (`string`)	The name of the variable to be set.
VariableValue (`string`)	The value of the variable to be set.

exec

Exec is a request to execute a command on the channel using the authenticated user's shell. The following field is available:


Command (`string`)	The command to be executed.

subsystem

Subsystem is a request to start a subsystem on the specified channel. The following field is available:


Subsystem (`string`)	The name of the subsystem to be started (e.g., "sftp").

xon-xoff

Xon-xoff instructs the server to allow or disallow control-S/control-Q style flow control. The following field is available:


ClientCanDo (`boolean`)	Whether or not the server should enable flow control.

signal

Sends a signal to the remote process/service. The following field is available:


SignalName (`string`)	The name of the signal to be sent.

If the packet type is not well known, Field should start with the special character "%" and contain a comma-separated list of field types as defined in SetSSHParam. For example, reading out the X11AuthProtocol of an x11-req payload, you can use "%s,f".

Note: The return value is a string encoded the same way as the FieldValue param in SetSSHParam.

Note: This method is applicable only for reading and creating Secure Shell (SSH) packets for use within the SSHCustomAuth event.

SFTPClient.getSSHParamBytes Method

Reads a field from a Secure Shell (SSH) packet's payload.

Syntax

async sftpclient.getSSHParamBytes(payload : Uint8Array, field : string): Promise<Uint8Array>

Remarks

This method is the same as calling GetSSHParam, but it returns raw bytes instead of strings.

Note: This method is applicable only for reading and creating Secure Shell (SSH) packets for use within the SSHCustomAuth event.

SFTPClient.interrupt Method

This method interrupts the current method.

Syntax

async sftpclient.interrupt(): Promise<void>

Remarks

If there is no method in progress, Interrupt simply returns, doing nothing.

SFTPClient.listDirectory Method

List the current directory specified by RemotePath on a Secure File Transfer Protocol (SFTP) server.

Syntax

async sftpclient.listDirectory(): Promise<void>

Remarks

A listing is requested for the directory (or file mask) specified in RemoteFile. RemoteFile is either an absolute path on the server or is a path relative to RemotePath. The file listing is received through the DirList event.

If a Secure Shell (SSH) session is not in place, one is automatically created by the component first.

SFTPClient.makeDirectory Method

Creates a directory on a Secure File Transfer Protocol (SFTP) server.

Syntax

async sftpclient.makeDirectory(newDir : string): Promise<void>

Remarks

A directory with a path specified by NewDir is created on the SFTP server. NewDir is either an absolute path on the server or is a path relative to RemotePath.

If a Secure Shell (SSH) session is not in place, one is automatically created by the component first.

SFTPClient.queryFileAttributes Method

Queries the server for the attributes of RemoteFile .

Syntax

async sftpclient.queryFileAttributes(): Promise<void>

Remarks

This method queries the server for attributes of RemoteFile. After calling this method, FileAttributes will be populated with the values returned by the server.

To update attributes, modify the desired values in FileAttributes and call UpdateFileAttributes.

SFTPClient.queueFile Method

Adds a file to the transfer queue.

Syntax

async sftpclient.queueFile(localFile : string, remoteFile : string): Promise<void>

Remarks

This method adds a file to the queue of files that will be transferred.

It is not required to use this method; however, this method extends the ability of the class to allow for multiple simultaneous file transfers.

To simply transfer a file without using this method, you need only to set LocalFile and RemoteFile and to call Upload or Download, as appropriate. This method allows you to instead queue multiple files before beginning a transfer.

When a file is queued, it will not be transferred until the Upload or Download method is called. If multiple files are queued, the files will be transferred simultaneously. The SimultaneousTransferLimit setting controls the maximum number of simultaneous transfers.

The Upload or Download method will not return until the queue has been completely processed. This method may be called from within events to add additional files to the queue before processing is complete.

To clear the queue, call ResetQueue. This will not affect current transfers.

To cancel an individual file transfer, set the Cancel parameter of the Transfer event to True. The rest of the queue will continue to process as normal.

The Interrupt method may be called to immediately stop all current transfers.

In the event of a file-specific error, the Error event will fire and the LocalFile and RemoteFile event parameters can be used to identify the file to which the error applies.

SFTPClient.removeDirectory Method

Remove a directory specified by DirName from a secure file transfer protocol (SFTP) server.

Syntax

async sftpclient.removeDirectory(dirName : string): Promise<void>

Remarks

A directory with a path specified by DirName is deleted on the SFTP server. DirName is either an absolute path on the server or a path relative to RemotePath.

If a Secure Shell (SSH) session is not in place, one is automatically created by the component first.

SFTPClient.renameFile Method

Change the name of RemoteFile to NewName .

Syntax

async sftpclient.renameFile(newName : string): Promise<void>

Remarks

The name of the remote file or the folder specified by RemoteFile is changed to NewName. RemoteFile and NewName are either absolute paths on the server or a path relative to RemotePath.

If a Secure Shell (SSH) session is not in place, one is automatically created by the component first.

SFTPClient.reset Method

This method will reset the class.

Syntax

async sftpclient.reset(): Promise<void>

Remarks

This method will reset the class's properties to their default values.

SFTPClient.resetQueue Method

Resets the queue of files to be transferred.

Syntax

async sftpclient.resetQueue(): Promise<void>

Remarks

This method will remove all files from the transfer queue.

Calling this method will clear all files that were queued by QueueFile. Calling this method will not affect current transfers.

SFTPClient.setSSHParam Method

Writes a field to the end of a payload.

Syntax

sftpclient.setSSHParam(payload : Uint8Array, fieldType : string, fieldValue : string): Uint8Array

Remarks

This method is used to build the payload portion of a Secure Shell (SSH) packet to be sent later by a call to SendSSHPacket. Payload should contain the result of a previous call to SetSSHParam. FieldType is a string defining the type of field to be written to the packet. FieldValue should be the string representation of the field to be written.

The following is a list of supported field types and a description of how FieldValue should be encoded:


s	A plaintext string containing the default system encoding of the data.
sb	A string containing the hex-encoded data (e.g., "A1B23C")
m	A variable-length large integer, encoded as a textual representation of the value (e.g., "1234").
i	A 32-bit integer, encoded as a textual representation of the value (e.g., "1234").
l	A 64-bit integer, encoded as a textual representation of the value (e.g., "1234").
b	A single byte, encoded as a textual representation of the value (e.g., "123").
f	A boolean flag, encoded as a textual representation of the value (e.g., 'True' or 'False')

Note: Integer values may be hexadecimal encoded by prefixing "0x" to the beginning of the string; otherwise, the value is assumed to be Base10.

Note: This method is applicable only for reading and creating Secure Shell (SSH) packets for use within the SSHCustomAuth event.

SFTPClient.SSHLogoff Method

Logs off from the Secure Shell (SSH) server.

Syntax

async sftpclient.SSHLogoff(): Promise<void>

Remarks

Logs off from the SSH server. If that fails, the connection is terminated by the local host.

SFTPClient.SSHLogon Method

Logs on to the SSHHost using the current SSHUser and SSHPassword .

Syntax

async sftpclient.SSHLogon(SSHHost : string, SSHPort : number): Promise<void>

Remarks

Logs on to the Secure Shell (SSH) server using the current SSHUser and SSHPassword. This will perform the SSH handshake and authentication.

Example. Logging On:

SSHClient.SSHUser = "username" SSHClient.SSHPassword = "password" SSHClient.SSHLogon("sshHost", sshPort)

SFTPClient.updateFileAttributes Method

Instructs the class to send the FileAttributes to the server.

Syntax

async sftpclient.updateFileAttributes(): Promise<void>

Remarks

When UpdateFileAttributes is called, the class will send the values of the following properties to the server:

FileAttributesAccessTime
FileAttributesACL
FileAttributesAllocationSize
FileAttributesAttributeBits
FileAttributesAttributeBitsValid
FileAttributesCreationTime
FileAttributesFileType
FileAttributesGroupId
FileAttributesIsDir
FileAttributesModifiedTime
FileAttributesOwnerId
FileAttributesPermissions
FileAttributesSize

SFTPClient.upload Method

Upload a file specified by LocalFile to a secure file transfer protocol (SFTP) server.

Syntax

async sftpclient.upload(): Promise<void>

Remarks

The local file specified by LocalFile is uploaded to the remote file specified by RemoteFile. RemoteFile is either an absolute path on the server or a path relative to RemotePath.

If a Secure Shell (SSH) session is not in place, one is automatically created by the component first.

If you want to append to a server file, please refer to the Append method.

Example. Upload a File:

FTPControl.LocalFile = "C:\\localfile.txt" FTPControl.RemoteFile = "remotefile.txt" FTPControl.Upload() FTPControl.LocalFile = "C:\\localfile2.txt" FTPControl.RemoteFile = "folder/remotefile2.txt" FTPControl.Upload()

SFTPClient.uploadRange Method

UploadRange inserts data into a remote file on a secure file transfer protocol (SFTP) server.

Syntax

async sftpclient.uploadRange(path : string, fileName : string, startByte : number, count : number, buffer : Uint8Array): Promise<void>

Remarks

This method enables uploading a buffer into the remote file specified by the Path and FileName. Count bytes will be updated from the provided Buffer starting in the remote file at the StartByte offset.

This functionality enables precise control over the insertion of data into a remote file, allowing for targeted modifications, overwriting, or additions starting from a specific position within the file.

Note: If the offset specified is beyond the file length, empty bytes will be created between the last file byte and the uploaded buffer.

SFTPClient.Connected Event

Fired immediately after a connection completes (or fails).

Syntax

sftpclient.on('Connected', listener: (e: {readonly statusCode: number, readonly description: string}) => void )

Remarks

If the connection is made normally, StatusCode is 0 and Description is "OK".

If the connection fails, StatusCode has the error code returned by the Transmission Control Protocol (TCP)/IP stack. Description contains a description of this code. The value of StatusCode is equal to the value of the error.

Please refer to the Error Codes section for more information.

SFTPClient.ConnectionStatus Event

Fired to indicate changes in the connection state.

Syntax

sftpclient.on('ConnectionStatus', listener: (e: {readonly connectionEvent: string, readonly statusCode: number, readonly description: string}) => void )

Remarks

This event is fired when the connection state changes: for example, completion of a firewall or proxy connection or completion of a security handshake.

The ConnectionEvent parameter indicates the type of connection event. Values may include the following:


	Firewall connection complete.
	Secure Sockets Layer (SSL) or S/Shell handshake complete (where applicable).
	Remote host connection complete.
	Remote host disconnected.
	SSL or S/Shell connection broken.
	Firewall host disconnected.

StatusCode has the error code returned by the Transmission Control Protocol (TCP)/IP stack. Description contains a description of this code. The value of StatusCode is equal to the value of the error.

SFTPClient.DirList Event

Fired when a directory entry is received.

Syntax

sftpclient.on('DirList', listener: (e: {readonly dirEntry: string, readonly fileName: string, readonly isDir: boolean, readonly fileSize: number, readonly fileTime: string, readonly isSymlink: boolean}) => void )

Remarks

The DirList events are fired when a directory listing is received as a response to a ListDirectory.

The StartTransfer and EndTransfer events mark the beginning and end of the event stream.

The DirEntry parameter contains the filename when ListDirectory is called.

The class tries to fill out the FileName, IsDir, FileSize, and FileTime parameters when calling the ListDirectory method.

The format of the FileTime parameter returned by the class can be controlled through the FileTimeFormat configuration setting. If no format is specified, the class will format the date dependent on the year. If the filetime is in the same year, it will be formatted as "MMM dd HH:mm"; otherwise, it will be formatted as "MMM dd yyyy".

IsSymlink indicates whether the entry is a symbolic link. When the entry is a symbolic link, the value of IsDir will always be False because this information is not returned in the directory listing. To inspect a symlink to determine if it is a link to a file or a folder, set RemoteFile and query the FileAttributesIsDir property.

SFTPClient.Disconnected Event

Fired when a connection is closed.

Syntax

sftpclient.on('Disconnected', listener: (e: {readonly statusCode: number, readonly description: string}) => void )

Remarks

If the connection is broken normally, StatusCode is 0 and Description is "OK".

If the connection is broken for any other reason, StatusCode has the error code returned by the Transmission Control Protocol (TCP/IP) subsystem. Description contains a description of this code. The value of StatusCode is equal to the value of the TCP/IP error.

Please refer to the Error Codes section for more information.

SFTPClient.EndTransfer Event

Fired when a file completes downloading or uploading.

Syntax

sftpclient.on('EndTransfer', listener: (e: {readonly direction: number, readonly localFile: string, readonly remoteFile: string}) => void )

Remarks

The EndTransfer event fires when either an upload or a download operation completes. This occurs when the file finishes transferring or a directory listing is finished.

The Direction parameter shows whether the client (0) or the server (1) is sending the data.

LocalFile identifies the local file. RemoteFile is the remote file.

SFTPClient.Error Event

Fired when errors occur during data delivery.

Syntax

sftpclient.on('Error', listener: (e: {readonly errorCode: number, readonly description: string, readonly localFile: string, readonly remoteFile: string}) => void )

Remarks

The Error event is fired in case of exceptional conditions during message processing. Normally the class .

ErrorCode contains an error code and Description contains a textual description of the error. For a list of valid error codes and their descriptions, please refer to the Error Codes section.

LocalFile identifies the local file. RemoteFile is the remote file.

SFTPClient.Log Event

Fired once for each log message.

Syntax

sftpclient.on('Log', listener: (e: {readonly logLevel: number, readonly message: string, readonly logType: string}) => void )

Remarks

Fired once for each log message generated by the class. The verbosity is controlled by the LogLevel setting.

LogLevel indicates the detail level of the message. Possible values are as follows:


0 (None)	No messages are logged.
1 (Info - Default)	Informational events such as Secure Shell (SSH) handshake messages are logged.
2 (Verbose)	Detailed data such as individual packet information are logged.
3 (Debug)	Debug data including all relevant sent and received bytes are logged.

Message is the log message.

LogType is reserved for future use.

SFTPClient.SSHCustomAuth Event

Fired when the class is doing a custom authentication.

Syntax

sftpclient.on('SSHCustomAuth', listener: (e: {packet: string}) => void )

Remarks

SSHCustomAuth is fired during the user authentication stage of the Secure Shell (SSH) logon process if SSHAuthMode is set to amCustom. Packet contains the last raw SSH packet sent by the server, in HEX-encoded format.

The client should create a new raw SSH packet to send to the server and set Packet to the HEX-encoded representation of the packet to send.

In all cases, Packet will start with the message type field.

To read the incoming packet, call DecodePacket and then use the GetSSHParam and GetSSHParamBytes methods. To create a packet, use the SetSSHParam method and then call EncodePacket to obtain a HEX-encoded value and assign this to the Packet parameter.

SFTPClient.SSHKeyboardInteractive Event

Fired when the class receives a request for user input from the server.

Syntax

sftpclient.on('SSHKeyboardInteractive', listener: (e: {readonly name: string, readonly instructions: string, readonly prompt: string, response: string, readonly echoResponse: boolean}) => void )

Remarks

SSHKeyboardInteractive is fired during the user authentication stage of the Secure Shell (SSH) logon process. During authentication, the class will request a list of available authentication methods for the SSHUser. For example, if the SSHHost responds with "keyboard-interactive", the class will fire this event to allow the client application to set the password.

During authentication, the SSH server may respond with a request for the user's authentication information. Name is a server-provided value associated with the authentication method such as "CRYPTOCard Authentication". Instructions will contain specific instructions, also supplied by the server, for how the user should respond.

Along with these values, the server will also send at least one input Prompt to be displayed to and filled out by the user. Response should be set to the user's input, and will be sent back in the user authentication information response. EchoResponse is a server recommendation for whether or not the user's response should be echoed back during input.

Note: The server may send several prompts in a single packet. The class will fire the SSHKeyboardInteractive event once for each prompt.

SFTPClient.SSHServerAuthentication Event

Fired after the server presents its public key to the client.

Syntax

sftpclient.on('SSHServerAuthentication', listener: (e: {readonly hostKey: string, readonly hostKeyB: Uint8Array, readonly fingerprint: string, readonly keyAlgorithm: string, readonly certSubject: string, readonly certIssuer: string, readonly status: string, accept: boolean}) => void )

Remarks

This event is fired when the client can decide whether or not to continue with the connection process. If the public key is known to be a valid key for the Secure Shell (SSH) server, Accept should be set to True within the event. Otherwise, the server will not be authenticated and the connection will be broken.

Accept will be True only if either HostKey or Fingerprint is identical to the value of SSHAcceptServerHostKey.

Accept may be set to True manually to accept the server host key.

Note: SSH's security inherently relies on client verification of the host key. Ignoring the host key and always setting Accept to True is strongly discouraged, and could cause potentially serious security vulnerabilities in your application. It is recommended that clients maintain a list of known keys for each server and check HostKey against this list each time a connection is attempted.

Host Key contains the full binary text of the key, in the same format used internally by SSH.

Fingerprint holds the SHA-256 hash of HostKey in the hex-encoded form: 0a:1b:2c:3d. To configure the hash algorithm used to calculate this value, see SSHFingerprintHashAlgorithm.

KeyAlgorithm identifies the host key algorithm. The following values are supported:

ssh-rsa
ssh-dss
rsa-sha2-256
rsa-sha2-512
x509v3-sign-rsa
x509v3-sign-dss
ecdsa-sha2-nistp256
ecdsa-sha2-nistp384
ecdsa-sha2-nistp521

To limit the accepted host key algorithms, refer to SSHPublicKeyAlgorithms.

CertSubject is the subject of the certificate. This is applicable only when KeyAlgorithm is "x509v3-sign-rsa" or "x509v3-sign-dss".

CertIssuer is the issuer of the certificate. This is applicable only when KeyAlgorithm is "x509v3-sign-rsa" or "x509v3-sign-dss".

Status is reserved for future use.

SFTPClient.SSHStatus Event

Fired to track the progress of the secure connection.

Syntax

sftpclient.on('SSHStatus', listener: (e: {readonly message: string}) => void )

Remarks

The event is fired for informational and logging purposes only. Used to track the progress of the connection.

SFTPClient.StartTransfer Event

Fired when a file starts downloading or uploading.

Syntax

sftpclient.on('StartTransfer', listener: (e: {readonly direction: number, readonly localFile: string, readonly remoteFile: string}) => void )

Remarks

The StartTransfer event fires when a data interface connection is created. This occurs when the file starts transferring or a directory listing is started.

The Direction parameter shows whether the client (0) or the server (1) is sending the data.

LocalFile identifies the local file. RemoteFile is the remote file.

SFTPClient.Transfer Event

Fired during file download or upload.

Syntax

sftpclient.on('Transfer', listener: (e: {readonly direction: number, readonly localFile: string, readonly remoteFile: string, readonly bytesTransferred: number, readonly percentDone: number, readonly text: string, readonly textB: Uint8Array, cancel: boolean}) => void )

Remarks

One or more Transfer events are fired during file transfer. The BytesTransferred parameter shows the number of bytes transferred since the beginning of the transfer.

Text contains the portion of the file data being delivered.

The Direction parameter shows whether the client (0) or the server (1) is sending the data.

LocalFile identifies the local file. RemoteFile is the remote file.

The PercentDone parameter shows the progress of the transfer in the corresponding direction. If PercentDone can not be calculated the value will be -1.

To cancel the current transfer, set Cancel to True.

Certificate Type

This is the digital certificate being used.

Remarks

This type describes the current digital certificate. The certificate may be a public or private key. The fields are used to identify or select certificates.

The following fields are available:

Fields

EffectiveDate
string (read-only)
Default Value: ""

The date on which this certificate becomes valid. Before this date, it is not valid. The date is localized to the system's time zone. The following example illustrates the format of an encoded date:

23-Jan-2000 15:00:00.

ExpirationDate
string (read-only)
Default Value: ""

The date on which the certificate expires. After this date, the certificate will no longer be valid. The date is localized to the system's time zone. The following example illustrates the format of an encoded date:

23-Jan-2001 15:00:00.

ExtendedKeyUsage
string (read-only)
Default Value: ""

A comma-delimited list of extended key usage identifiers. These are the same as ASN.1 object identifiers (OIDs).

Fingerprint
string (read-only)
Default Value: ""

The hex-encoded, 16-byte MD5 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: bc:2a:72:af:fe:58:17:43:7a:5f:ba:5a:7c:90:f7:02

FingerprintSHA1
string (read-only)
Default Value: ""

The hex-encoded, 20-byte SHA-1 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: 30:7b:fa:38:65:83:ff:da:b4:4e:07:3f:17:b8:a4:ed:80:be:ff:84

FingerprintSHA256
string (read-only)
Default Value: ""

The hex-encoded, 32-byte SHA-256 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: 6a:80:5c:33:a9:43:ea:b0:96:12:8a:64:96:30:ef:4a:8a:96:86:ce:f4:c7:be:10:24:8e:2b:60:9e:f3:59:53

Issuer
string (read-only)
Default Value: ""

The issuer of the certificate. This property contains a string representation of the name of the issuing authority for the certificate.

KeyPassword
string
Default Value: ""

The password for the certificate's private key (if any).

Some certificate stores may individually protect certificates' private keys, separate from the standard protection offered by the . This property can be used to read such password-protected private keys.

Note: This property defaults to the value of . To clear it, you must set the property to the empty string (""). It can be set at any time, but when the private key's password is different from the store's password, then it must be set before calling .

PrivateKey
string (read-only)
Default Value: ""

The private key of the certificate (if available). The key is provided as PEM/Base64-encoded data.

Note: The may be available but not exportable. In this case, returns an empty string.

PrivateKeyAvailable
boolean (read-only)
Default Value: False

Whether a is available for the selected certificate. If is True, the certificate may be used for authentication purposes (e.g., server authentication).

PrivateKeyContainer
string (read-only)
Default Value: ""

The name of the container for the certificate (if available). This functionality is available only on Windows platforms.

PublicKey
string (read-only)
Default Value: ""

The public key of the certificate. The key is provided as PEM/Base64-encoded data.

PublicKeyAlgorithm
string (read-only)
Default Value: ""

The textual description of the certificate's public key algorithm. The property contains either the name of the algorithm (e.g., "RSA" or "RSA_DH") or an object identifier (OID) string representing the algorithm.

PublicKeyLength
number (read-only)
Default Value: 0

The length of the certificate's public key (in bits). Common values are 512, 1024, and 2048.

SerialNumber
string (read-only)
Default Value: ""

The serial number of the certificate encoded as a string. The number is encoded as a series of hexadecimal digits, with each pair representing a byte of the serial number.

SignatureAlgorithm
string (read-only)
Default Value: ""

The text description of the certificate's signature algorithm. The property contains either the name of the algorithm (e.g., "RSA" or "RSA_MD5RSA") or an object identifier (OID) string representing the algorithm.

Store
string
Default Value: "MY"

The name of the certificate store for the client certificate.

The property denotes the type of the certificate store specified by . If the store is password-protected, specify the password in .

is used in conjunction with the property to specify client certificates. If has a value, and or is set, a search for a certificate is initiated. Please see the property for details.

Designations of certificate stores are platform dependent.

The following designations are the most common User and Machine certificate stores in Windows:


MY	A certificate store holding personal certificates with their associated private keys.
CA	Certifying authority certificates.
ROOT	Root certificates.

When the certificate store type is cstPFXFile, this property must be set to the name of the file. When the type is cstPFXBlob, the property must be set to the binary contents of a PFX file (i.e., PKCS#12 certificate store).

StoreB
Uint8Array
Default Value: "MY"

The name of the certificate store for the client certificate.

The property denotes the type of the certificate store specified by . If the store is password-protected, specify the password in .

is used in conjunction with the property to specify client certificates. If has a value, and or is set, a search for a certificate is initiated. Please see the property for details.

Designations of certificate stores are platform dependent.

The following designations are the most common User and Machine certificate stores in Windows:


MY	A certificate store holding personal certificates with their associated private keys.
CA	Certifying authority certificates.
ROOT	Root certificates.

StorePassword
string
Default Value: ""

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

StoreType
CertStoreTypes
Default Value: 0

The type of certificate store for this certificate.

The class supports both public and private keys in a variety of formats. When the cstAuto value is used, the class will automatically determine the type. This property can take one of the following values:


0 (cstUser - default)	For Windows, this specifies that the certificate store is a certificate store owned by the current user. Note: This store type is not available in Java.
1 (cstMachine)	For Windows, this specifies that the certificate store is a machine store. Note: This store type is not available in Java.
2 (cstPFXFile)	The certificate store is the name of a PFX (PKCS#12) file containing certificates.
3 (cstPFXBlob)	The certificate store is a string (binary or Base64-encoded) representing a certificate store in PFX (PKCS#12) format.
4 (cstJKSFile)	The certificate store is the name of a Java Key Store (JKS) file containing certificates. Note: This store type is only available in Java.
5 (cstJKSBlob)	The certificate store is a string (binary or Base64-encoded) representing a certificate store in Java Key Store (JKS) format. Note: This store type is only available in Java.
6 (cstPEMKeyFile)	The certificate store is the name of a PEM-encoded file that contains a private key and an optional certificate.
7 (cstPEMKeyBlob)	The certificate store is a string (binary or Base64-encoded) that contains a private key and an optional certificate.
8 (cstPublicKeyFile)	The certificate store is the name of a file that contains a PEM- or DER-encoded public key certificate.
9 (cstPublicKeyBlob)	The certificate store is a string (binary or Base64-encoded) that contains a PEM- or DER-encoded public key certificate.
10 (cstSSHPublicKeyBlob)	The certificate store is a string (binary or Base64-encoded) that contains an SSH-style public key.
11 (cstP7BFile)	The certificate store is the name of a PKCS#7 file containing certificates.
12 (cstP7BBlob)	The certificate store is a string (binary) representing a certificate store in PKCS#7 format.
13 (cstSSHPublicKeyFile)	The certificate store is the name of a file that contains an SSH-style public key.
14 (cstPPKFile)	The certificate store is the name of a file that contains a PPK (PuTTY Private Key).
15 (cstPPKBlob)	The certificate store is a string (binary) that contains a PPK (PuTTY Private Key).
16 (cstXMLFile)	The certificate store is the name of a file that contains a certificate in XML format.
17 (cstXMLBlob)	The certificate store is a string that contains a certificate in XML format.
18 (cstJWKFile)	The certificate store is the name of a file that contains a JWK (JSON Web Key).
19 (cstJWKBlob)	The certificate store is a string that contains a JWK (JSON Web Key).
21 (cstBCFKSFile)	The certificate store is the name of a file that contains a BCFKS (Bouncy Castle FIPS Key Store). Note: This store type is only available in Java and .NET.
22 (cstBCFKSBlob)	The certificate store is a string (binary or Base64-encoded) representing a certificate store in BCFKS (Bouncy Castle FIPS Key Store) format. Note: This store type is only available in Java and .NET.
23 (cstPKCS11)	The certificate is present on a physical security key accessible via a PKCS#11 interface. To use a security key, the necessary data must first be collected using the CertMgr class. The ListStoreCertificates method may be called after setting CertStoreType to `cstPKCS11`, CertStorePassword to the PIN, and CertStore to the full path of the PKCS#11 DLL. The certificate information returned in the CertList event's `CertEncoded` parameter may be saved for later use. When using a certificate, pass the previously saved security key information as the and set to the PIN. Code Example. SSH Authentication with Security Key: `certmgr.CertStoreType = CertStoreTypes.cstPKCS11; certmgr.OnCertList += (s, e) => { secKeyBlob = e.CertEncoded; }; certmgr.CertStore = @"C:\Program Files\OpenSC Project\OpenSC\pkcs11\opensc-pkcs11.dll"; certmgr.CertStorePassword = "123456"; //PIN certmgr.ListStoreCertificates(); sftp.SSHCert = new Certificate(CertStoreTypes.cstPKCS11, secKeyBlob, "123456", "*"); sftp.SSHUser = "test"; sftp.SSHLogon("myhost", 22);`
99 (cstAuto)	The store type is automatically detected from the input data. This setting may be used with both public and private keys and can detect any of the supported formats automatically.

SubjectAltNames
string (read-only)
Default Value: ""

Comma-separated lists of alternative subject names for the certificate.

ThumbprintMD5
string (read-only)
Default Value: ""

The MD5 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

ThumbprintSHA1
string (read-only)
Default Value: ""

The SHA-1 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

ThumbprintSHA256
string (read-only)
Default Value: ""

The SHA-256 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

Usage
string (read-only)
Default Value: ""

The text description of .

This value will be one or more of the following strings and will be separated by commas:

Digital Signature
Non-Repudiation
Key Encipherment
Data Encipherment
Key Agreement
Certificate Signing
CRL Signing
Encipher Only

If the provider is OpenSSL, the value is a comma-separated list of X.509 certificate extension names.

UsageFlags
number (read-only)
Default Value: 0

The flags that show intended use for the certificate. The value of is a combination of the following flags:


0x80	Digital Signature
0x40	Non-Repudiation
0x20	Key Encipherment
0x10	Data Encipherment
0x08	Key Agreement
0x04	Certificate Signing
0x02	CRL Signing
0x01	Encipher Only

Please see the property for a text representation of .

This functionality currently is not available when the provider is OpenSSL.

Version
string (read-only)
Default Value: ""

The certificate's version number. The possible values are the strings "V1", "V2", and "V3".

Subject
string
Default Value: ""

The subject of the certificate used for client authentication.

This property must be set after all other certificate properties are set. When this property is set, a search is performed in the current certificate store to locate a certificate with a matching subject.

If a matching certificate is found, the property is set to the full subject of the matching certificate.

If an exact match is not found, the store is searched for subjects containing the value of the property.

If a match is still not found, the property is set to an empty string, and no certificate is selected.

The special value "*" picks a random certificate in the certificate store.

The certificate subject is a comma-separated list of distinguished name fields and values. For instance, "CN=www.server.com, OU=test, C=US, E=support@nsoftware.com". Common fields and their meanings are as follows:


Field	Meaning
CN	Common Name. This is commonly a hostname like www.server.com.
O	Organization
OU	Organizational Unit
L	Locality
S	State
C	Country
E	Email Address

If a field value contains a comma, it must be quoted.

Encoded
string
Default Value: ""

The certificate (PEM/Base64 encoded). This property is used to assign a specific certificate. The and properties also may be used to specify a certificate.

When is set, a search is initiated in the current for the private key of the certificate. If the key is found, is updated to reflect the full subject of the selected certificate; otherwise, is set to an empty string.

EncodedB
Uint8Array
Default Value: ""

The certificate (PEM/Base64 encoded). This property is used to assign a specific certificate. The and properties also may be used to specify a certificate.

Constructors

public Certificate();

Creates a instance whose properties can be set. This is useful for use with when generating new certificates.

public Certificate(String certificateFile);

Opens CertificateFile and reads out the contents as an X.509 public key.

public Certificate(byte[] encoded);

Parses Encoded as an X.509 public key.

public Certificate(int storeType, String store, String storePassword, String subject);

StoreType identifies the type of certificate store to use. See for descriptions of the different certificate stores. Store is a file containing the certificate store. StorePassword is the password used to protect the store.

After the store has been successfully opened, the class will attempt to find the certificate identified by Subject . This can be either a complete or a substring match of the X.509 certificate's subject Distinguished Name (DN). The Subject parameter can also take an MD5, SHA-1, or SHA-256 thumbprint of the certificate to load in a "Thumbprint=value" format.

public Certificate(int storeType, String store, String storePassword, String subject, String configurationString);

ConfigurationString is a newline-separated list of name-value pairs that may be used to modify the default behavior. Possible values include "PersistPFXKey", which shows whether or not the PFX key is persisted after performing operations with the private key. This correlates to the PKCS12_NO_PERSIST_KEY CryptoAPI option. The default value is True (the key is persisted). "Thumbprint" - an MD5, SHA-1, or SHA-256 thumbprint of the certificate to load. When specified, this value is used to select the certificate in the store. This is applicable to the cstUser , cstMachine , cstPublicKeyFile , and cstPFXFile store types. "UseInternalSecurityAPI" shows whether the platform (default) or the internal security API is used when performing certificate-related operations.

public Certificate(int storeType, String store, String storePassword, byte[] encoded);

After the store has been successfully opened, the class will load Encoded as an X.509 certificate and search the opened store for a corresponding private key.

public Certificate(int storeType, byte[] store, String storePassword, String subject);

StoreType identifies the type of certificate store to use. See for descriptions of the different certificate stores. Store is a byte array containing the certificate data. StorePassword is the password used to protect the store.

public Certificate(int storeType, byte[] store, String storePassword, String subject, String configurationString);

public Certificate(int storeType, byte[] store, String storePassword, byte[] encoded);

After the store has been successfully opened, the class will load Encoded as an X.509 certificate and search the opened store for a corresponding private key.

DirEntry Type

This is a listing in a directory returned from the server.

Remarks

The DirEntry listings are filled out by the class when a directory listing is received as a response to a ListDirectory or ListDirectoryLong call. The server returns a listing for each directory and file at the current path that exists. This listing is parsed into a directory entry.

If ListDirectoryLong is called, all of the fields listed below are supplied by the server. When the ListDirectory method is called, however, the , , and fields all are left empty by the server. In this case, the only field it returns is the .

The full line for the directory entry is provided by the field.

The following fields are available:

Fields

Entry
string (read-only)
Default Value: ""

This property contains the raw entry as received from the server. It is the complete unparsed entry in the directory listing.

FileName
string (read-only)
Default Value: ""

This property shows the file name in the last directory listing. This also may be the directory name if a directory is being listed. You can tell whether it is a file or a directory by the Boolean property.

FileSize
number (read-only)
Default Value: 0

This property shows the file size in the last directory listing.

FileTime
string (read-only)
Default Value: ""

This property shows the file time in the last directory listing. This contains the date/time stamp in which the file was created.

Note: In Unix systems, the date is given in two types of formats: If the date is in the past 12 months, the exact time is specified and the year is omitted. Otherwise, only the date and the year, but not hours or minutes, are given.

IsDir
boolean (read-only)
Default Value: False

This property specifies whether entries in the last directory listing are directories. This Boolean value denotes whether or not the directory entry listed in is a file or a directory.

IsSymlink
boolean (read-only)
Default Value: False

This property indicates whether the entry is a symbolic link. When the entry is a symbolic link, the value of will always be False because this information is not returned in the directory listing. To inspect a symlink to determine if it is a link to a file or a folder, set RemoteFile and query the FileAttributes.FileAttributesIsDir property.

Constructors

public DirEntry();

Firewall Type

The firewall the class will connect through.

Remarks

When connecting through a firewall, this type is used to specify different properties of the firewall, such as the firewall and the .

The following fields are available:

Fields

AutoDetect
boolean
Default Value: False

Whether to automatically detect and use firewall system settings, if available.

FirewallType
FirewallTypes
Default Value: 0

The type of firewall to connect through. The applicable values are as follows:


fwNone (0)	No firewall (default setting).
fwTunnel (1)	Connect through a tunneling proxy. is set to 80.
fwSOCKS4 (2)	Connect through a SOCKS4 Proxy. is set to 1080.
fwSOCKS5 (3)	Connect through a SOCKS5 Proxy. is set to 1080.
fwSOCKS4A (10)	Connect through a SOCKS4A Proxy. is set to 1080.

Host
string
Default Value: ""

The name or IP address of the firewall (optional). If a is given, the requested connections will be authenticated through the specified firewall when connecting.

If this property is set to a Domain Name, a DNS request is initiated. Upon successful termination of the request, this property is set to the corresponding address. If the search is not successful, the class .

Password
string
Default Value: ""

A password if authentication is to be used when connecting through the firewall. If is specified, the and properties are used to connect and authenticate to the given firewall. If the authentication fails, the class .

Port
number
Default Value: 0

The Transmission Control Protocol (TCP) port for the firewall . See the description of the property for details.

Note: This property is set automatically when is set to a valid value. See the description of the property for details.

User
string
Default Value: ""

A username if authentication is to be used when connecting through a firewall. If is specified, this property and the property are used to connect and authenticate to the given Firewall. If the authentication fails, the class .

Constructors

public Firewall();

SFTPFileAttributes Type

Includes a set of attributes for a file existing on an secure file transfer protocol (SFTP) server.

Remarks

This type describes a file residing on an SFTP server.

The following fields are available:

Fields

AccessTime
number
Default Value: 0

Contains the number of milliseconds since 12:00:00 AM, January 1, 1970, when this file was last accessed.

AccessTimeNanos
number
Default Value: 0

Contains a subsecond value associated with this file's .

ACL
string
Default Value: ""

Contains a string containing an access control list (ACL).

AllocationSize
number (read-only)
Default Value: 0

Specifies the size, in bytes, that this file consumes on disk.

AttributeBits
number (read-only)
Default Value: 0

and each contain a bitmask representing attributes of the file on the secure file transfer protocol (SFTP) server. These two values must be interpreted together. Any value present in must be ignored in . This is done so that the server and client can communicate the attributes they know about without confusing any bits they do not understand.

This field can have one or more of the following values ORed together:

0x00000001 (SSH_FILEXFER_ATTR_FLAGS_READONLY)
0x00000002 (SSH_FILEXFER_ATTR_FLAGS_SYSTEM)
0x00000004 (SSH_FILEXFER_ATTR_FLAGS_HIDDEN)
0x00000008 (SSH_FILEXFER_ATTR_FLAGS_CASE_INSENSITIVE)
0x00000010 (SSH_FILEXFER_ATTR_FLAGS_ARCHIVE)
0x00000020 (SSH_FILEXFER_ATTR_FLAGS_ENCRYPTED)
0x00000040 (SSH_FILEXFER_ATTR_FLAGS_COMPRESSED)
0x00000080 (SSH_FILEXFER_ATTR_FLAGS_SPARSE)
0x00000100 (SSH_FILEXFER_ATTR_FLAGS_APPEND_ONLY)
0x00000200 (SSH_FILEXFER_ATTR_FLAGS_IMMUTABLE)
0x00000400 (SSH_FILEXFER_ATTR_FLAGS_SYNC)
0x00000800 (SSH_FILEXFER_ATTR_FLAGS_TRANSLATION_ERR)

AttributeBitsValid
number (read-only)
Default Value: 0

This field can have one or more of the following values ORed together:

0x00000001 (SSH_FILEXFER_ATTR_FLAGS_READONLY)
0x00000002 (SSH_FILEXFER_ATTR_FLAGS_SYSTEM)
0x00000004 (SSH_FILEXFER_ATTR_FLAGS_HIDDEN)
0x00000008 (SSH_FILEXFER_ATTR_FLAGS_CASE_INSENSITIVE)
0x00000010 (SSH_FILEXFER_ATTR_FLAGS_ARCHIVE)
0x00000020 (SSH_FILEXFER_ATTR_FLAGS_ENCRYPTED)
0x00000040 (SSH_FILEXFER_ATTR_FLAGS_COMPRESSED)
0x00000080 (SSH_FILEXFER_ATTR_FLAGS_SPARSE)
0x00000100 (SSH_FILEXFER_ATTR_FLAGS_APPEND_ONLY)
0x00000200 (SSH_FILEXFER_ATTR_FLAGS_IMMUTABLE)
0x00000400 (SSH_FILEXFER_ATTR_FLAGS_SYNC)
0x00000800 (SSH_FILEXFER_ATTR_FLAGS_TRANSLATION_ERR)

CreationTime
number
Default Value: 0

Specifies the number of milliseconds since 12:00:00 AM, January 1, 1970, when this file was created.

CreationTimeNanos
number
Default Value: 0

Contains a subsecond value associated with this file's .

FileType
SFTPFileTypes (read-only)
Default Value: 0

The type of file. may be one of the following values:


1 (sftRegular - default)	A normal file.
2 (sftDirectory)	A directory.
3 (symlink)	The file is a Unix symbolic link.
4 (sftSpecial)	The file type is a special system file.
5 (sftUnknown)	The file type is unknown.
6 (sftSocket)	The file handle is a socket handle.
7 (sftCharDevice)	The file handle is a character input device.
8 (sftBlockDevice)	The file handle is a block input device.
9 (sftpFIFO)	The file handle is a buffering input device.

Flags
number
Default Value: 0

is an integer containing a bitmask that indicates which properties are valid. When retrieving file attributes from an secure file transfer protocol (SFTP) server, this property indicates which values were read by the class. When setting values, the property is used to determine which values get passed to the server.

may be bitwise-ORed with any of the following values:


0x00000001 (SSH_FILEXFER_ATTR_SIZE)	is valid.
0x00000002 (SSH_FILXFER_ATTR_UIDGID)	and are valid. Note: this attribute is only valid when using SFTP protocol version 3.
0x00000004 (SSH_FILEXFER_ATTR_PERMISSIONS)	is valid.
0x00000008 (SSH_FILEXFER_ATTR_ACCESSTIME)	is valid. Note: For protocol version 3, this also denotes that is valid.
0x00000010 (SSH_FILEXFER_ATTR_CREATETIME)	is valid. Note: This attribute is valid only when using SFTP protocol version 4 and above.
0x00000020 (SSH_FILEXFER_ATTR_MODIFYTIME)	is valid. Note: This attribute is valid only when using SFTP protocol version 4 and above.
0x00000040 (SSH_FILEXFER_ATTR_ACL)	is valid. Note: This attribute is valid only when using SFTP protocol version 4 and above.
0x00000080 (SSH_FILEXFER_ATTR_OWNERGROUP)	and are valid. Note: This attribute is valid only when using SFTP protocol version 4 and above.
0x00000100 (SSH_FILEXFER_ATTR_SUBSECOND_TIMES)	, and are valid. Note: This attribute is valid only when using SFTP protocol version 4 and above.
0x00000200 (SSH_FILEXFER_ATTR_BITS)	is valid. Note: This attribute is valid only when using SFTP protocol version 5 and above. When using SFTP protocol version 6 and above, this also indicates that is valid.
0x00000400 (SSH_FILEXFER_ATTR_ALLOCATION_SIZE)	is valid. Note: This attribute is valid only when using SFTP protocol version 6 and above.
0x00000800 (SSH_FILEXFER_ATTR_TEXT_HINT)	is valid. Note: This attribute is valid only when using SFTP protocol version 6 and above.
0x00001000 (SSH_FILEXFER_ATTR_MIME_TYPE)	is valid. Note: This attribute is valid only when using SFTP protocol version 6 and above.
0x00002000 (SSH_FILEXFER_ATTR_LINK_COUNT)	is valid. Note: This attribute is valid only when using SFTP protocol version 6 and above.
0x00004000 (SSH_FILEXFER_ATTR_UNTRANSLATED_NAME)	is valid. Note: This attribute is valid only when using SFTP protocol version 6 and above.
0x80000000 (SSH_FILEXFER_ATTR_EXTENDED)	Extended (vendor-specific) values are associated with the file. This attribute is currently ignored by the class.

GroupId
string
Default Value: ""

Specifies the Id of the group that has access rights this file.

IsDir
boolean (read-only)
Default Value: False

Specifies whether or not the file represented by these attributes is a directory.

IsSymlink
boolean (read-only)
Default Value: False

Specifies whether or not the file or directory represented by these attributes is a symbolic link. This setting is applicable only when GetSymlinkAttrs is set to True. By default, the attributes of the actual file referred to by the link (not the symbolic link) are returned and this property will always be False.

LinkCount
number (read-only)
Default Value: 0

Includes the number of links that reference this file.

MIMEType
string
Default Value: ""

Specifies a value that can be used in the Content-Type header for a MIME entity part containing this file.

ModifiedTime
number
Default Value: 0

Specifies the number of milliseconds since 12:00:00 AM, January 1, 1970, that this file was last modified.

ModifiedTimeNanos
number
Default Value: 0

Includes a subsecond value associated with this file's .

OwnerId
string
Default Value: ""

Specifies the user Id of this file's owner.

Permissions
number
Default Value: 0

Includes a 32-bit integer containing the a POSIX-compatible file permission bitmask.

The bitmask should be interpreted as a decimal value of a series of octal digits. For example, an octal permission value of "100644" would be "33188" in Base10, and "40755" in octal would be "16877" in Base10.

The last three octal digits are the most significant and represent, in order, the file access capabilities of the file's owner, the owner's group, and other users. Each of these octal digits is, on its own, a 3-bit bitmask with the following possible values:


1 (`001`)	Execute
2 (`010`)	Write
4 (`100`)	Read

An octal permission digit of 7 would have all three values set and would mean that the file can be read, written, and executed by that user class. For example, the octal permissions "100644" would have a value "6" for the owner, "4" for the group, and "4" for other users. This would be interpreted to mean that all users can read the file, no users can execute it, and only the owner can write it. The permissions "40755" would mean that all users can read and execute the file, but only the owner can write it.

The previous octal digit is another bitmask with the following values:


1 (`001`)	Sticky Bit - retain the file in memory for performance
2 (`010`)	Set GID - sets the group Id of the process to the file's group Id upon execution (only for executable files)
4 (`100`)	Set UID - sets the user Id of the process to the file's user Id upon execution (only for executable files)

The previous two octal digits are used together as a bitmask to determine the type of file. This bitmask has the following values:


01 (`000001`)	Named pipe
02 (`000010`)	Character special
04 (`000100`)	Directory
06 (`000110`)	Block special
10 (`001000`)	Regular
12 (`001010`)	Symbolic link
14 (`001100`)	Socket

For example, the octal file permissions "100644" would indicate a regular file and octal "40755" would indicate a directory.

Note: You will need to convert the octal permissions bitmask into its decimal representation.

PermissionsOctal
string
Default Value: ""

Includes an octal string containing the a POSIX-compatible file permission bitmask.

The bitmask should be interpreted as a series of octal digits. For example, "100644" and "40755".


1 (`001`)	Execute
2 (`010`)	Write
4 (`100`)	Read

The previous octal digit is another bitmask with the following values:


1 (`001`)	Sticky Bit - retain the file in memory for performance
2 (`010`)	Set GID - sets the group Id of the process to the file's group Id upon execution (only for executable files)
4 (`100`)	Set UID - sets the user Id of the process to the file's user Id upon execution (only for executable files)

The previous two octal digits are used together as a bitmask to determine the type of file. This bitmask has the following values:


01 (`000001`)	Named pipe
02 (`000010`)	Character special
04 (`000100`)	Directory
06 (`000110`)	Block special
10 (`001000`)	Regular
12 (`001010`)	Symbolic link
14 (`001100`)	Socket

For example, the octal file permissions "100644" would indicate a regular file and octal "40755" would indicate a directory.

Size
number (read-only)
Default Value: 0

Specifies the total size, in bytes, of this file.

TextHint
number (read-only)
Default Value: 0

Provides a hint for whether or not the file is a text file.

UntranslatedName
string (read-only)
Default Value: ""

Provides the untranslated name of the file.

Config Settings (class ipworksedi.sftpclient)

The class accepts one or more of the following configuration settings. Configuration settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the class, access to these internal properties is provided through the Config method.

SFTPClient Config Settings

AllowBackslashInName: Whether backslashes are allowed in folder and file names.

By default the backslash character is treated as a path separator and is not allowed in file and folder names. When this configuration setting is set to True, backslashes "\" are allowed in file and folder names and are not supported as path separators.

The default value is False.

AsyncTransfer: Controls whether simultatenous requests are made to read or write files.

When set to True, the class will make several requests to read or write data before waiting for a response from the server. The maximum number of these requests that can be made is controlled by MaxOutstandingPackets. The default is True.

AttrAccessTime: Can be queried for the AccessTime file attribute during the DirList event.

During DirList, this configuration setting can be queried to retrieve the value of the AccessTime file attribute if it is present in the response from the server.

AttrCreationTime: Can be queried for the CreationTime file attribute during the DirList event.

During DirList, this configuration setting can be queried to retrieve the value of the CreationTime file attribute if it is present in the response from the server.

AttrFileType: Can be queried for the FileType file attribute during the DirList event.

During DirList, this configuration setting can be queried to retrieve the value of the FileType file attribute if it is present in the response from the server.

AttrGroupId: Can be queried for the GroupId file attribute during the DirList event.

During DirList, this configuration setting can be queried to retrieve the value of the GroupId file attribute if it is present in the response from the server.

AttrLinkCount: Can be queried for the LinkCount file attribute during the DirList event.

During DirList, this configuration setting can be queried to retrieve the value of the LinkCount file attribute if it is present in the response from the server.

AttrOwnerId: Can be queried for the OwnerId file attribute during the DirList event.

During DirList, this configuration setting can be queried to retrieve the value of the OwnerId file attribute if it is present in the response from the server.

AttrPermission: Can be queried for the Permissions file attribute during the DirList event.

During DirList, this configuration setting can be queried to retrieve the value of the Permissions file attribute if it is present in the response from the server.

CheckFileHash: Compares a server-computed hash with a hash calculated locally.

This setting may be queried to compare a hash of the file specified by RemoteFile with the hash calculated by the server. When queried, the class will ask the server to calculate a hash of the file. It will then compute a hash locally and compare the values to confirm that the content that exists in the file specified by RemoteFile is the same as the file specified by LocalFile.

The server must support the check-file extension.

The class supports the following hash algorithms (in order of preference): sha256,sha224,sha384,sha512,sha1,md5. The server may choose to use any value from this list. No action is needed to configure the algorithm, the class will automatically use the same algorithm that the server users.

If the extension is unsupported or a mismatch in hashes is detected, the class . If the hashes match the value, True is returned. try { String flag = sftp.Config("CheckFileHash"); // flag will be equal to "True" } catch (Exception e) { // mismatch }

CopyRemoteData: Copies a specified range of bytes in one file to another.

This configuration setting uses the copy-data extension to copy a range of bytes from one location to another directly on the server. The server must support the copy-data extension.

Set RemoteFile to the path of the source file. Optionally set StartByte to indicate from where in the source file to start reading. Then set CopyRemoteData to a semicolon (;) delimited listed of Name=Value pairs. In this list, DestFile must be set to the path of the destination file. Length may be set to the number of bytes to read. WriteOffset may be set to the location in the destination file from where to start writing. sftp.RemoteFile = "/my/source/file.txt"; sftp.Overwrite = true; sftp.StartByte = 6; sftp.Config("CopyRemoteData=DestFile=/my/destination/file.txt;Length=5;WriteOffset=14");

CopyRemoteFile: Copies a file from one location to another directly on the server.

This configuration setting uses the copy-file extension to copy a file from one location to another directly on the server. The server must support the copy-file extension.

Set RemoteFile to the path of the source file, then set CopyRemoteFile to the path of the destination file. Overwrite controls whether an existing file will be overwritten. sftp.Overwrite = true; sftp.RemoteFile = "/my/source/file.txt"; sftp.Config("CopyRemoteFile=" + "/my/destination/file.txt");

DisableRealPath: Controls whether or not the SSH_FXP_REALPATH request is sent.

This configuration setting can be used to skip sending the SSH_FXP_REALPATH request, which asks the server to canonicalize the value in RemotePath to an absolute path. The default value is False, which will cause the component to send the request normally. If set to True, the component will not send the SSH_FXP_REALPATH packet and will use the value in RemotePath directly.

ExcludeFileMask: Specifies a file mask for excluding files in directory listings.

This configuration setting specifies one or more file masks to be excluded during a directory listing. When using multiple masks, any files that match one or more of the masks will not be listed. For example, setting ExcludeFileMask to "*.txt", RemoteFile to "", and calling ListDirectory will list all files except those ending in .txt.

FileMaskDelimiter: Specifies a delimiter to use for setting multiple file masks in the RemoteFile property.

If specified, the RemoteFile property will be split into separate masks based on the chosen delimiter. The default is "", which will cause the RemoteFile property to be treated as a single value. When using multiple masks, any files that match one or more of the masks will be listed. For example, setting FileMaskDelimiter to "," and setting RemoteFile to "*.txt, *.csv" will list all files ending in .txt or .csv.

FiletimeFormat: Specifies the format to use when returning filetime strings.

If specified, the class will use this value to format the filetime string returned through the DirList event. By default, the class will format the date as "MM/dd/yyyy HH:mm:ss".

FreeSpace: The free space on the remote server in bytes.

This property is populated after calling the GetSpaceInfo configuration setting. This holds the total free space available on the drive on the remote server in bytes.

GetSpaceInfo: Queries the server for drive usage information.

This configuration setting queries the server for the total space and free space available on the remote drive. When querying this setting, the class will immediately request the information from the server. After calling this setting the TotalSpace and FreeSpace configuration settings will be populated.

Note: The server must understand either the "statvfs@openssh.com" or "space-available" extension for this operation to succeed.

GetSymlinkAttrs: Whether to get the attributes of the symbolic link, or the resource pointed to by the link.

When FileAttributes is queried, the class will retrieve information about the RemoteFile. This configuration setting controls the behavior when RemoteFile refers to a symbolic link on the server. By default the information returned by FileAttributes is that of the actual file pointed to by the symbolic link, not the symbolic link itself.

If it is desired to retrieve the attributes of the symbolic link itself, set GetSymlinkAttrs to True before querying FileAttributes.

IgnoreFileMaskCasing: Controls whether or not the file mask is case sensitive.

This configuration setting applies to the file mask value specified by the RemoteFile property. The default value is True. If set to False, the file mask will be case sensitive.

LocalEOL: When TransferMode is set, this specifies the line ending for the local system.

This configuration setting is applicable only when TransferMode is set to 1 (ASCII). The default value is a CrLf character sequence.

When uploading or downloading, this value will be compared to ServerEOL. If ServerEOL and LocalEOL are different, the line endings in the file being transferred will be converted to the line endings used by the destination. Line endings will be converted to the value in LocalEOL when downloading. Line endings will be converted to the value in ServerEOL when uploading. If ServerEOL and LocalEOL are the same, no conversion takes place.

The value supplied to this setting must be quoted. For example: component.Config("LocalEOL=\"" + myEOLSequence + "\""); Where myEOLSequence is a Cr, Lf, or CrLf character sequence.

Conversion will only happen when TransferMode is set to 1 (ASCII) and ServerEOL and LocalEOL are different.

LogSFTPFileData: Whether SFTP file data is present in Debug logs.

This configuration setting controls whether file data is logged when LogLevel is set to 3 (Debug). When False (default), the file data being transferred is not included. Set this value to True to include all traffic include file data.

Note: Setting this value to True will increase the amount of data that are logged.

MaskSensitiveData: Masks passwords in logs.

The default value is True. When set to True, the class will mask passwords that otherwise would appear in its logs.

MaxFileData: Specifies the maximum payload size of an SFTP packet.

Although the Secure Shell (SSH) specification requires servers and clients to support SSH packets of at least 32,000 bytes, some server implementations limit the packet size to smaller values. MaxFileData provides a means by which the user can specify the maximum amount of data that can be put into a Secure File Transfer Protocol (SFTP) packet so that the class can communicate effectively with these servers. If you are having difficulty when uploading to a server, try setting MaxFileData size to a value smaller than 32,000.

Most servers that use smaller values will use a maximum SSH packet size of 16KB (16384). To most efficiently communicate with such servers, MaxFileData size should be set to 14745.

Note: Values larger than 64,000 (65,536) may not be respected by some servers (such as OpenSSH) and will result in unexpected behavior. If specifying a value, it is recommended to set a value less than or equal to 65,536.

The default value is 32,768.

MaxOutstandingPackets: Sets the maximum number of simultaneous read or write requests allowed.

This configuration setting sets the number of simultaneous read or write requests allowed. This configuration setting applies only when AsyncTransfer is True. The default is 8.

NegotiatedProtocolVersion: The negotiated SFTP version.

This configuration setting returns the negotiated version of SFTP. Query this to ensure that the correct version was negotiated. This configuration setting is read only.

NormalizeRemotePath: Whether to normalize the RemotePath.

When set to True, the component will normalize the value in RemotePath by appending a forward slash (/) if one is not already present. "." and ".." are special cases and will not be affected. The default is True.

PreserveFileTime: Preserves the file's timestamps during transfer.

If set to True, the class will preserve the file's timestamps during transfer. This is applicable to both uploads and downloads. The default value is False.

ProtocolVersion: The highest allowable SFTP version to use.

This configuration setting governs the highest allowable SFTP version to use when negotiating the version with the server. The default value is 3 because this is the most common version. The class supports values from 3 to 6. It is recommended to use the default value of 3 unless there is a specific reason a higher version is needed.

ReadLink: This settings returns the target of a specified symbolic link.

This configuration setting returns the target of the specified symbolic link. To use the setting, pass the remote path and file name of the symbolic link. For example: string resolvedPath = component.Config("ReadLink=/home/test/mysymlink.txt");

RealTimeUpload: Enables real time uploading.

When this value is set to True, the class will upload the data in the file specified by LocalFile and continue monitoring LocalFile for additional data to upload until no new data are found for RealTimeUploadAgeLimit seconds. This allows you to start uploading a file immediately after the file is created and continue uploading as data is written to the file. The default value is False.

RealTimeUploadAgeLimit: The age limit in seconds when using RealTimeUpload.

This value is applicable only when RealTimeUpload is set to True. This specifies the number of seconds for which the class will monitor LocalFile for new data to upload. If this limit is reached and no new data are found in LocalFile, the upload will complete. The default value is 1.

ServerEOL: When TransferMode is set, this specifies the line ending for the remote system.

This configuration setting is applicable only when TransferMode is set to 1 (ASCII). The default value is a CrLf character sequence.

When uploading or downloading, this value will be compared to LocalEOL. If ServerEOL and LocalEOL are different, the line endings in the file being transferred will be converted to the line endings used by the destination. Line endings will be converted to the value in LocalEOL when downloading. Line endings will be converted to the value in ServerEOL when uploading. If ServerEOL and LocalEOL are the same, no conversion takes place.

The value supplied to this setting must be quoted. For example: component.Config("ServerEOL=\"" + myEOLSequence + "\""); Where myEOLSequence is a Cr, Lf, or CrLf character sequence.

Conversion will happen only when TransferMode is set to 1 (ASCII) and ServerEOL and LocalEOL are different.

SimultaneousTransferLimit: The maximum number of simultaneous file transfers.

This configuration setting specifies the maximum number of simultaneous file transfers. This is used when processing files added to the transfer queue by QueueFile. The default value is 5.

TotalSpace: The total space on the remote server in bytes.

This property is populated after calling the GetSpaceInfo configuration setting. This holds the total space on the drive on the remote server in bytes.

TransferMode: The transfer mode (ASCII or Binary).

The value 0 represents binary and the value 1 represents ASCII. If the value is 0 (default), the initial server mode will be used.

When this value is set to 1 (ASCII) the class will use the values specified in LocalEOL and ServerEOL to convert line endings as appropriate.

Note: When this value is set to 1 (ASCII) and ProtocolVersion is set to 4 or higher the class will automatically determine the value for ServerEOL if the server supports the newline protocol extension.

TransferredDataLimit: Specifies the maximum number of bytes to download from the remote file.

This configuration setting specifies the maximum number of bytes tjat should be downloaded from the current RemoteFile when Download is called. The class will stop downloading data if it reaches the specified limit, or if there are no more data to download.

This configuration setting can be used in conjunction with the StartByte property to download a specific range of data from the current RemoteFile.

UseFxpStat: Whether SSH_FXP_STAT is sent.

For certain operations the class will send SSH_FXP_STAT to get a file's attributes. Some servers do not support this packet and will return an error.

Set this to false to not send the packet. This will cause PreserveFileTime to not work and prevent PercentDone in Transfer from being calculated.

The default is true.

UseServerFileTime: Controls if the file time returned from the server is converted to local time or not.

If this configuration setting is set to False, the component will return the filetime as the system's local time; otherwise, it will return with the time as it is reported by the server. Controls if the file time returned from the server is converted to local time or not.

UseServerFileTime: Controls if the file time returned from the server is converted to local time or not.

SSHClient Config Settings

ChannelDataEOL[ChannelId]: Used to break the incoming data stream into chunks.

By default MaxChannelDataLength is 0 and ChannelDataEOL is an empty string. SSHChannelData fires whenever an SSH_MSG_CHANNEL_DATA packet is received.

If MaxChannelDataLength is greater than 0 and ChannelDataEOL is a nonempty string, the class will internally buffer data waiting to fire SSHChannelData until either MaxChannelDataLength is reached or ChannelDataEOL is found, whichever comes first. Query ChannelDataEOLFound to know which condition was met. The buffer is reset any time SSHChannelData fires.

ChannelDataEOL and MaxChannelDataLength must be set together or unexpected behavior could occur.

ChannelDataEOLFound[ChannelId]: Determines if ChannelDataEOL was found.

If true,then ChannelDataEOL was found. If false, then MaxChannelDataLength was reached.

This configuration setting is valid only when queried inside SSHChannelData, MaxChannelDataLength > 0, and ChannelDataEOL is nonempty.

ClientSSHVersionString: The SSH version string used by the class.

This configuration setting specifies the Secure Shell (SSH) version string used by the class. The default value is "SSH-2.0-IPWorks SSH Client 2024".

Most SSH servers expect the SSH version string to have the expected format "SSH-protocol version-software version". See above for an example.

DoNotRepeatAuthMethods: Whether the class will repeat authentication methods during multifactor authentication.

The default value is true. When set to false, the class will repeat authentication methods that have already been completed during multifactor authentication.

EnablePageantAuth: Whether to use a key stored in Pageant to perform client authentication.

This configuration setting controls whether Pageant authentication is disabled, enabled, or required. When enabled or required, the class attempts to communicate with PuTTY's ssh-agent, called "Pageant", over shared memory to perform public key authentication. Possible values and the corresponding behavior is described as follows:


Value	Description
0 (Disabled - default)	No communication with Pageant is attempted.
1 (Enabled)	Pageant authentication is used if available. If Pageant is not running, or does not contain the expected key, no error is thrown.
2 (Required)	Only Pageant authentication is used. If Pageant is not running, or does not contain the expected key, an error is thrown.

Example 1. Enabling Pageant: component.Config("EnablePageantAuth=1"); component.SSHUser = "sshuser"; component.SSHLogon("localhost", 22);

Note: This functionality is available only on Windows.

KerberosDelegation: If true, asks for credentials with delegation enabled during authentication.

The default value is "True". If set to "False", the client will not ask for credentials delegation support during authentication.

Note: Even if the client asks for delegation, the server/KDC might not grant it, and authentication will still succeed.

KerberosRealm: The fully qualified domain name of the Kerberos Realm to use for GSSAPI authentication.

This property may be set to the fully qualified (DNS) name of the kerberos realm (or Windows Active Directory domain name) to use during GSSAPI authentication. This can be used to force authentication with a given realm if the client and server machines are not part of the same domain.

KerberosSPN: The Kerberos Service Principal Name of the SSH host.

This property can be set to specify the Service Principal Name (SPN) associated with the SSH service on the remote host. This will usually be in the form "host/fqdn.of.sshhost[@REALM]". If not specified, the class will assume the SPN is based on the value of the SSHHost property and the kerberos realm used for authentication.

KeyRenegotiationThreshold: Sets the threshold for the SSH Key Renegotiation.

This property allows you to specify the threshold, in the number of bytes, for the Secure Shell (SSH) key renegotiation. The default value for this property is set to 1 GB.

Example. Setting the Threshold to 500 MB: SSHComponent.Config("KeyRenegotiationThreshold=524288000")

LogLevel: Specifies the level of detail that is logged.

This configuration setting controls the level of detail that is logged through the Log event. Possible values are as follows:


0 (None)	No messages are logged.
1 (Info - Default)	Informational events such as Secure Shell (SSH) handshake messages are logged.
2 (Verbose)	Detailed data such as individual packet information are logged.
3 (Debug)	Debug data including all relevant sent and received bytes are logged.

MaxChannelDataLength[ChannelId]: The maximum amount of data to accumulate when no ChannelDataEOL is found.

By default MaxChannelDataLength is 0 and ChannelDataEOL is an empty string. SSHChannelData fires whenever an SSH_MSG_CHANNEL_DATA packet is received.

ChannelDataEOL and MaxChannelDataLength must be set together or unexpected behavior could occur.

MaxPacketSize: The maximum packet size of the channel, in bytes.

This configuration setting specifies the maximum size of an individual data packet, in bytes, that can be sent to the sender.

MaxWindowSize: The maximum window size allowed for the channel, in bytes.

This configuration setting specifies how many bytes of channel data can be sent to the sender of this message without adjusting the window.

Note: This value may be changed during the connection, but the window size can only be increased, not decreased.

NegotiatedStrictKex: Returns whether strict key exchange was negotiated to be used.

This configuration setting specifies whether strict key exchange (strict kex) was negotiated during the SSH handshake. If strict kex is being used, then this will return "True". If strict kex is not being used, then this will return "False".

component.Config("NegotiatedStrictKex")

PasswordPrompt: The text of the password prompt used in keyboard-interactive authentication.

This configuration setting optionally specifies a pattern to be matched to the prompt received from the server during keyboard-interactive authentication. If a matching prompt is detected the class automatically responds to the prompt with the password specified by SSHPassword.

This provides an easy way to automatically reply to prompts with the password if one is presented by the server. The password will be autofilled in the Response parameter of the SSHKeyboardInteractive event in the case of a match.

The following special characters are supported for pattern matching:


?	Any single character.
*	Any characters or no characters (e.g., C*t matches Cat, Cot, Coast, Ct).
[,-]	A range of characters (e.g., [a-z], [a], [0-9], [0-9,a-d,f,r-z]).
\	The slash is ignored and exact matching is performed on the next character.


Character	Escape Sequence
?	[?]
*	[*]
[	[[]
\	[\]

For example, to match the value [Something].txt, specify the pattern [[]Something].txt.

PreferredDHGroupBits: The size (in bits) of the preferred modulus (p) to request from the server.

This configuration setting may be when using the diffie-hellman-group-exchange-sha1 or diffie-hellman-group-exchange-sha256 key exchange algorithms to control the preferred size, in bits, of the modulus (p) prime number to request from the server. Acceptable values are between 1024 and 8192.

RecordLength: The length of received data records.

If set to a positive value, this configuration setting defines the length of data records to be received. The class will accumulate data until RecordLength is reached and only then will it fire the DataIn event with data of length RecordLength. This allows data to be received as records of known length. This value can be changed at any time, including within the DataIn event.

The default value is 0, meaning this setting is not used.

ServerSSHVersionString: The remote host's SSH version string.

This configuration setting will return the remote host's SSH version string, which can help when identifying problematic servers. This configuration setting is read-only.

SignedSSHCert: The CA signed client public key used when authenticating.

When authenticating via public key authentication, this setting may be set to the certificate authority (CA) signed client's public key. This is useful when the server has been configured to trust client keys signed by a particular CA. For instance: component.Config("SignedSSHCert=ssh-rsa-cert-v01@openssh.com AAAAB3NzaC1yc2EAAAADAQABAAAB..."); The algorithm such as ssh-rsa-cert-v01@openssh.com in the previous string is used as part of the authentication process. To use a different algorithm, simply change this value. For instance, all of the following are acceptable with the same signed public key:

ssh-rsa-cert-v01@openssh.com AAAAB3NzaC1yc2EAAAADAQABAAAB...
rsa-sha2-256-cert-v01@openssh.com AAAAB3NzaC1yc2EAAAADAQABAAAB...
rsa-sha2-512-cert-v01@openssh.com AAAAB3NzaC1yc2EAAAADAQABAAAB...

SSHAcceptAnyServerHostKey: If set the class will accept any key presented by the server.

The default value is "False". Set this to "True" to accept any key presented by the server.

SSHAcceptServerCAKey: The CA public key that signed the server's host key.

If the server's host key was signed by a CA, this configuration setting may be used to specify the CA's public key. If specified, the class will trust any server's host key that was signed by the CA. For instance: component.Config("SSHAcceptServerCAKey=ssh-rsa AAAAB3NzaC1yc2EAAAADAQAB...");

SSHAcceptServerHostKeyFingerPrint: The fingerprint of the server key to accept.

This configuration setting may be set to a comma-delimited collection of 16-byte MD5 fingerprints that should be accepted as the host's key. You may supply it by hex- encoding the values in the form "0a:1b:2c:3d". Example 2. Accepting Fingerprints: SSHClient.Config("SSHAcceptServerHostKeyFingerprint=0a:1b:2c:3d"); If the server's fingerprint matches one of the values supplied, the class will accept the host key.

SSHFingerprintHashAlgorithm: The algorithm used to calculate the fingerprint.

This configuration setting controls which hash algorithm is used to calculate the hostkey's fingerprint, displayed when SSHServerAuthentication fires. Valid values are as follows:

MD5
SHA1
SHA256 (default)

SSHFingerprintMD5: The server hostkey's MD5 fingerprint.

This configuration setting may be queried in SSHServerAuthentication to get the server hostkey's MD5 fingerprint.

SSHFingerprintSHA1: The server hostkey's SHA1 fingerprint.

This configuration setting may be queried in SSHServerAuthentication to get the server hostkey's SHA-1 fingerprint.

SSHFingerprintSHA256: The server hostkey's SHA256 fingerprint.

This configuration setting may be queried in SSHServerAuthentication to get the server hostkey's SHA-256 fingerprint.

SSHKeepAliveCountMax: The maximum number of keep alive packets to send without a response.

This configuration setting specifies the maximum number of keep-alive packets to send when no response is received. Normally a response to a keep-alive packet is received right away. If no response is received, the class will continue to send keep-alive packets until SSHKeepAliveCountMax is reached. If this is reached, the class will assume the connection is broken and disconnect. The default value is 5.

SSHKeepAliveInterval: The interval between keep alive packets.

This configuration setting specifies the number of seconds between keep alive packets. If set to a positive value, the class will send a SSH keep-alive packet after KeepAliveInterval seconds of inactivity. This configuration setting takes effect only when there is no activity; if any data are sent or received over the connection, it will reset the timer.

The default value is 0, meaning no keep alives will be sent.

Note: The SSHREVERSETUNNEL class uses a default value of 30.

SSHKeyExchangeAlgorithms: Specifies the supported key exchange algorithms.

This configuration setting may be used to specify the list of supported key exchange algorithms used during Secure Shell (SSH) negotiation. The value should contain a comma-separated list of algorithms. Supported algorithms are as follows:

curve25519-sha256
curve25519-sha256@libssh.org
diffie-hellman-group1-sha1
diffie-hellman-group14-sha1
diffie-hellman-group14-sha256
diffie-hellman-group16-sha512
diffie-hellman-group18-sha512
diffie-hellman-group-exchange-sha256
diffie-hellman-group-exchange-sha1
ecdh-sha2-nistp256
ecdh-sha2-nistp384
ecdh-sha2-nistp521
gss-group14-sha256-toWM5Slw5Ew8Mqkay+al2g==
gss-group16-sha512-toWM5Slw5Ew8Mqkay+al2g==
gss-nistp256-sha256-toWM5Slw5Ew8Mqkay+al2g==
gss-curve25519-sha256-toWM5Slw5Ew8Mqkay+al2g==
gss-group14-sha1-toWM5Slw5Ew8Mqkay+al2g==
gss-gex-sha1-toWM5Slw5Ew8Mqkay+al2g==

The default value is curve25519-sha256,curve25519-sha256@libssh.org,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1,gss-group14-sha256-toWM5Slw5Ew8Mqkay+al2g==,gss-group16-sha512-toWM5Slw5Ew8Mqkay+al2g==,gss-nistp256-sha256-toWM5Slw5Ew8Mqkay+al2g==,gss-curve25519-sha256-toWM5Slw5Ew8Mqkay+al2g==,gss-group14-sha1-toWM5Slw5Ew8Mqkay+al2g==,gss-gex-sha1-toWM5Slw5Ew8Mqkay+al2g==.

SSHKeyRenegotiate: Causes the component to renegotiate the SSH keys.

Once this configuration setting is queried, the component will renegotiate the SSH keys with the remote host.

Example 3. Renegotiating SSH Keys: SSHClient.Config("SSHKeyRenegotiate")

SSHMacAlgorithms: Specifies the supported Mac algorithms.

This configuration setting may be used to specify an alternate list of supported Mac algorithms used during SSH negotiation. This also specifies the order in which the Mac algorithms are preferred. The value should contain a comma-separated list of algorithms. Supported algorithms are as follows:

hmac-sha1
hmac-md5
hmac-sha1-96
hmac-md5-96
hmac-sha2-256
hmac-sha2-256-96
hmac-sha2-512
hmac-sha2-512-96
hmac-ripemd160
hmac-ripemd160-96
hmac-sha2-256-etm@openssh.com
hmac-sha2-512-etm@openssh.com
hmac-sha2-256-96-etm@openssh.com
hmac-sha2-512-96-etm@openssh.com
umac-64@openssh.com
umac-64-etm@openssh.com
umac-128@openssh.com
umac-128-etm@openssh.com

The default value is hmac-sha2-256,hmac-sha2-512,hmac-sha1,hmac-md5,hmac-ripemd160,hmac-sha1-96,hmac-md5-96,hmac-sha2-256-96,hmac-sha2-512-96,hmac-ripemd160-96,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,umac-64@openssh.com,umac-64-etm@openssh.com,umac-128@openssh.com,umac-128-etm@openssh.com.

SSHPubKeyAuthSigAlgorithms: Specifies the enabled signature algorithms that may be used when attempting public key authentication.

This setting specifies a list of signature algorithms that may be used when authenticating to the server using public key authentication. This applies only when public key authentication is performed by the client.

The setting should be a comma-separated list of algorithms. At runtime, the class will evaluate the specified algorithms, and if the algorithm is applicable to the certificate specified in SSHCert, it will be used. If the algorithm is not applicable, the class will evaluate the next algorithm. Possible values are as follows:

ssh-rsa
rsa-sha2-256
rsa-sha2-512
ssh-dss
ecdsa-sha2-nistp256
ecdsa-sha2-nistp384
ecdsa-sha2-nistp521
ssh-ed25519
x509v3-sign-rsa
x509v3-sign-dss

The default value in Windows is ssh-rsa,rsa-sha2-256,rsa-sha2-512,ssh-dss,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-ed25519.

rsa-sha2-256 and rsa-sha2-512 notes

The class will query the server for supported algorithms when connecting. If the server indicates support for rsa-sha2-256 or rsa-sha2-512 and the algorithm is present in the list defined by this setting (as in the default value), that algorithm will be used instead of ssh-rsa even when ssh-rsa appears first in the list.

For the rsa-sha2-256 and rsa-sha2-512 algorithms to be automatically preferred, the server must support the ext-info-c mechanism. In practice, older servers do not support this, and in that case, ssh-rsa will be used because it appears first in the list. Newer servers do support this mechanism, and in that case, rsa-sha2-256 or rsa-sha2-512 will be used even though it appears after ssh-rsa.

This behavior has been carefully designed to provide maximum compatibility while automatically using more secure algorithms when connecting to servers that support them.

SSHPublicKeyAlgorithms: Specifies the supported public key algorithms for the server's public key.

This configuration setting specifies the allowed public key algorithms for the server's public key. This list controls only the public key algorithm used when authenticating the server's public key. This list has no bearing on the public key algorithms that can be used by the client when performing public key authentication to the server. The default value is ssh-ed25519,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,rsa-sha2-256,rsa-sha2-512,ssh-rsa,ssh-dss,x509v3-sign-rsa,x509v3-sign-dss.

SSHVersionPattern: The pattern used to match the remote host's version string.

This configuration setting specifies the pattern used to accept or deny the remote host's SSH version string. It takes a comma-delimited list of patterns to match. The default value is "*SSH-1.99-*,*SSH-2.0-*" and will accept connections from SSH 1.99 and 2.0 hosts. As an example, the following value would accept connections for SSH 1.99, 2.0, and 2.99 hosts.

*SSH-1.99-*,*SSH-2.0-*,*SSH-2.99-*

TryAllAvailableAuthMethods: If set to true, the class will try all available authentication methods.

The default value is false. When set to true, the class will try to authenticate using all methods that it has credentials for and the server supports.

UseStrictKeyExchange: Specifies how strict key exchange is supported.

This configuration setting controls whether strict key exchange (strict kex) is enabled to mitigate the Terrapin attack. When enabled, the class will indicate support for strict key exchange by automatically including the pseudo-algorithm kex-strict-c-v00@openssh.com for client classes and kex-strict-s-v00@openssh.com for server classes in the list of supported key exchange algorithms.

Because both client and server must implement strict key exchange to effectively mitigate the Terrapin attack, the class provides options to further control the behavior in different scenarios. Possible values for this setting are as follows:


`0`	Disabled. Strict key exchange is not supported in the class.
`1` (default)	Enabled, but not enforced. This setting enables strict key exchange, but if the remote host does not support strict key exchange the connection is still allowed to continue.
`2`	Enabled, but will reject affected algorithms if the remote host does not support strict key exchange. If the remote host supports strict key exchange, all algorithms may be used. If the remote host does not support strict key exchange, the connection will continue only if the selected encryption and message authentication code (MAC) algorithms are not affected by the Terrapin attack.
`3`	Required. If the remote host does not support strict key exchange, the connection will fail.

WaitForChannelClose: Whether to wait for channels to be closed before disconnected.

This configuration setting controls whether the class will wait for a server response to the SSH_MSG_CHANNEL_CLOSE when disconnecting. When the class disconnects, it will first attempt to close all open channels by sending a SSH_MSG_CHANNEL_CLOSE for each channel. This configuration setting controls whether the class will wait for a server response after sending the messages.

When True (default), the class will wait for a response to the channel close message until the responses have been received, the server closes the connection, or Timeout seconds is reached.

When False, the class will still send the channel close messages, but it will not wait for a response and will proceed to close the connection.

WaitForServerDisconnect: Whether to wait for the server to close the connection.

This configuration setting controls whether to wait for the server to close the connection when SSHLogoff is called.

When set to True, the class will initiate the disconnection sequence by sending SSH_MSG_DISCONNECT, but it will not close the connection and instead will wait for the server to close the connection. Setting this to True may be beneficial in circumstances in which many connections are being established, to avoid port exhaustion when sockets are in a TIME_WAIT state. Allowing the server to close the connection avoids the TIME_WAIT state of socket on the client machine.

When set to False (default), the client will close the connection. It is recommended to use this value unless there is a specific need to change it.

Base Config Settings

BuildInfo: Information about the product's build.

When queried, this setting will return a string containing information about the product's build.

CodePage: The system code page used for Unicode to Multibyte translations.

The default code page is Unicode UTF-8 (65001).

The following is a list of valid code page identifiers:


Identifier	Name
037	IBM EBCDIC - U.S./Canada
437	OEM - United States
500	IBM EBCDIC - International
708	Arabic - ASMO 708
709	Arabic - ASMO 449+, BCON V4
710	Arabic - Transparent Arabic
720	Arabic - Transparent ASMO
737	OEM - Greek (formerly 437G)
775	OEM - Baltic
850	OEM - Multilingual Latin I
852	OEM - Latin II
855	OEM - Cyrillic (primarily Russian)
857	OEM - Turkish
858	OEM - Multilingual Latin I + Euro symbol
860	OEM - Portuguese
861	OEM - Icelandic
862	OEM - Hebrew
863	OEM - Canadian-French
864	OEM - Arabic
865	OEM - Nordic
866	OEM - Russian
869	OEM - Modern Greek
870	IBM EBCDIC - Multilingual/ROECE (Latin-2)
874	ANSI/OEM - Thai (same as 28605, ISO 8859-15)
875	IBM EBCDIC - Modern Greek
932	ANSI/OEM - Japanese, Shift-JIS
936	ANSI/OEM - Simplified Chinese (PRC, Singapore)
949	ANSI/OEM - Korean (Unified Hangul Code)
950	ANSI/OEM - Traditional Chinese (Taiwan; Hong Kong SAR, PRC)
1026	IBM EBCDIC - Turkish (Latin-5)
1047	IBM EBCDIC - Latin 1/Open System
1140	IBM EBCDIC - U.S./Canada (037 + Euro symbol)
1141	IBM EBCDIC - Germany (20273 + Euro symbol)
1142	IBM EBCDIC - Denmark/Norway (20277 + Euro symbol)
1143	IBM EBCDIC - Finland/Sweden (20278 + Euro symbol)
1144	IBM EBCDIC - Italy (20280 + Euro symbol)
1145	IBM EBCDIC - Latin America/Spain (20284 + Euro symbol)
1146	IBM EBCDIC - United Kingdom (20285 + Euro symbol)
1147	IBM EBCDIC - France (20297 + Euro symbol)
1148	IBM EBCDIC - International (500 + Euro symbol)
1149	IBM EBCDIC - Icelandic (20871 + Euro symbol)
1200	Unicode UCS-2 Little-Endian (BMP of ISO 10646)
1201	Unicode UCS-2 Big-Endian
1250	ANSI - Central European
1251	ANSI - Cyrillic
1252	ANSI - Latin I
1253	ANSI - Greek
1254	ANSI - Turkish
1255	ANSI - Hebrew
1256	ANSI - Arabic
1257	ANSI - Baltic
1258	ANSI/OEM - Vietnamese
1361	Korean (Johab)
10000	MAC - Roman
10001	MAC - Japanese
10002	MAC - Traditional Chinese (Big5)
10003	MAC - Korean
10004	MAC - Arabic
10005	MAC - Hebrew
10006	MAC - Greek I
10007	MAC - Cyrillic
10008	MAC - Simplified Chinese (GB 2312)
10010	MAC - Romania
10017	MAC - Ukraine
10021	MAC - Thai
10029	MAC - Latin II
10079	MAC - Icelandic
10081	MAC - Turkish
10082	MAC - Croatia
12000	Unicode UCS-4 Little-Endian
12001	Unicode UCS-4 Big-Endian
20000	CNS - Taiwan
20001	TCA - Taiwan
20002	Eten - Taiwan
20003	IBM5550 - Taiwan
20004	TeleText - Taiwan
20005	Wang - Taiwan
20105	IA5 IRV International Alphabet No. 5 (7-bit)
20106	IA5 German (7-bit)
20107	IA5 Swedish (7-bit)
20108	IA5 Norwegian (7-bit)
20127	US-ASCII (7-bit)
20261	T.61
20269	ISO 6937 Non-Spacing Accent
20273	IBM EBCDIC - Germany
20277	IBM EBCDIC - Denmark/Norway
20278	IBM EBCDIC - Finland/Sweden
20280	IBM EBCDIC - Italy
20284	IBM EBCDIC - Latin America/Spain
20285	IBM EBCDIC - United Kingdom
20290	IBM EBCDIC - Japanese Katakana Extended
20297	IBM EBCDIC - France
20420	IBM EBCDIC - Arabic
20423	IBM EBCDIC - Greek
20424	IBM EBCDIC - Hebrew
20833	IBM EBCDIC - Korean Extended
20838	IBM EBCDIC - Thai
20866	Russian - KOI8-R
20871	IBM EBCDIC - Icelandic
20880	IBM EBCDIC - Cyrillic (Russian)
20905	IBM EBCDIC - Turkish
20924	IBM EBCDIC - Latin-1/Open System (1047 + Euro symbol)
20932	JIS X 0208-1990 & 0121-1990
20936	Simplified Chinese (GB2312)
21025	IBM EBCDIC - Cyrillic (Serbian, Bulgarian)
21027	Extended Alpha Lowercase
21866	Ukrainian (KOI8-U)
28591	ISO 8859-1 Latin I
28592	ISO 8859-2 Central Europe
28593	ISO 8859-3 Latin 3
28594	ISO 8859-4 Baltic
28595	ISO 8859-5 Cyrillic
28596	ISO 8859-6 Arabic
28597	ISO 8859-7 Greek
28598	ISO 8859-8 Hebrew
28599	ISO 8859-9 Latin 5
28605	ISO 8859-15 Latin 9
29001	Europa 3
38598	ISO 8859-8 Hebrew
50220	ISO 2022 Japanese with no halfwidth Katakana
50221	ISO 2022 Japanese with halfwidth Katakana
50222	ISO 2022 Japanese JIS X 0201-1989
50225	ISO 2022 Korean
50227	ISO 2022 Simplified Chinese
50229	ISO 2022 Traditional Chinese
50930	Japanese (Katakana) Extended
50931	US/Canada and Japanese
50933	Korean Extended and Korean
50935	Simplified Chinese Extended and Simplified Chinese
50936	Simplified Chinese
50937	US/Canada and Traditional Chinese
50939	Japanese (Latin) Extended and Japanese
51932	EUC - Japanese
51936	EUC - Simplified Chinese
51949	EUC - Korean
51950	EUC - Traditional Chinese
52936	HZ-GB2312 Simplified Chinese
54936	Windows XP: GB18030 Simplified Chinese (4 Byte)
57002	ISCII Devanagari
57003	ISCII Bengali
57004	ISCII Tamil
57005	ISCII Telugu
57006	ISCII Assamese
57007	ISCII Oriya
57008	ISCII Kannada
57009	ISCII Malayalam
57010	ISCII Gujarati
57011	ISCII Punjabi
65000	Unicode UTF-7
65001	Unicode UTF-8

The following is a list of valid code page identifiers for Mac OS only:


Identifier	Name
1	ASCII
2	NEXTSTEP
3	JapaneseEUC
4	UTF8
5	ISOLatin1
6	Symbol
7	NonLossyASCII
8	ShiftJIS
9	ISOLatin2
10	Unicode
11	WindowsCP1251
12	WindowsCP1252
13	WindowsCP1253
14	WindowsCP1254
15	WindowsCP1250
21	ISO2022JP
30	MacOSRoman
10	UTF16String
0x90000100	UTF16BigEndian
0x94000100	UTF16LittleEndian
0x8c000100	UTF32String
0x98000100	UTF32BigEndian
0x9c000100	UTF32LittleEndian
65536	Proprietary

LicenseInfo: Information about the current license.

When queried, this setting will return a string containing information about the license this instance of a class is using. It will return the following information:

Product: The product the license is for.
Product Key: The key the license was generated from.
License Source: Where the license was found (e.g., RuntimeLicense, License File).
License Type: The type of license installed (e.g., Royalty Free, Single Server).
Last Valid Build: The last valid build number for which the license will work.

MaskSensitiveData: Whether sensitive data is masked in log messages.

In certain circumstances it may be beneficial to mask sensitive data, like passwords, in log messages. Set this to true to mask sensitive data. The default is true.

This setting only works on these classes: AS3Receiver, AS3Sender, Atom, Client(3DS), FTP, FTPServer, IMAP, OFTPClient, SSHClient, SCP, Server(3DS), Sexec, SFTP, SFTPServer, SSHServer, TCPClient, TCPServer.

UseInternalSecurityAPI: Whether or not to use the system security libraries or an internal implementation.

When set to false, the class will use the system security libraries by default to perform cryptographic functions where applicable.

Setting this configuration setting to true tells the class to use the internal implementation instead of using the system security libraries.

This setting is set to false by default on all platforms.

Trappable Errors (class ipworksedi.sftpclient)

SFTPClient Errors

118	Firewall error. Error description contains detailed information.
1102	The server's SFTP draft version is unsupported.
1103	SFTP command failed. Error description contains detailed information.
1104	Server does not support renaming.
1105	Received invalid response from server. Error description contains detailed information.
1106	Cannot resolve path: path does not exist.
1107	You must set LocalFile/RemoteFile before attempting to download/upload.
1108	Cannot download file: LocalFile exists and Overwrite is set to False.
1109	CheckFileHash failed because of hash value mismatch.

SSHClient Errors

1001	Server has disconnected.
1002	Protocol version unsupported or other issue with version string.
1003	Cannot negotiate algorithms.
1005	Selected algorithm unsupported.
1006	Cannot set keys.
1010	Unexpected algorithm.
1011	Cannot create exchange hash.
1012	Cannot make key.
1013	Cannot sign data.
1014	Cannot encrypt packet.
1015	Cannot decrypt packet.
1016	Cannot decompress packet.
1020	Failure to open channel.
1021	Invalid channel Id.
1022	Invalid channel data.
1023	Invalid channel message.
1024	SSH message unimplemented.
1027	Server message unsupported.
1030	Server's host key was rejected. The host key may be accepted within the SSHServerAuthentication event or using the SSHAcceptServerHostKey property.
1031	Cannot verify server's host key.
1032	Authentication failed. Check description for details.
1033	Channel request failed.
1034	Diffie-Hellman exchange failed.
1036	SSH connection failed.
1037	SSH reconnect limit reached.
1038	Elliptic curve Diffie-Hellman exchange failed.
1039	SSH keep-alive limit reached.
1098	Request failure.
1130	Would block error.
1133	Would block, reason: key reExchange.

TCPClient Errors

100	You cannot change the RemotePort at this time. A connection is in progress.
101	You cannot change the RemoteHost (Server) at this time. A connection is in progress.
102	The RemoteHost address is invalid (0.0.0.0).
104	Already connected. If you want to reconnect, close the current connection first.
106	You cannot change the LocalPort at this time. A connection is in progress.
107	You cannot change the LocalHost at this time. A connection is in progress.
112	You cannot change MaxLineLength at this time. A connection is in progress.
116	RemotePort cannot be zero. Please specify a valid service port number.
117	You cannot change the UseConnection option while the class is active.
135	Operation would block.
201	Timeout.
211	Action impossible in control's present state.
212	Action impossible while not connected.
213	Action impossible while listening.
301	Timeout.
302	Could not open file.
434	Unable to convert string to selected CodePage.
1105	Already connecting. If you want to reconnect, close the current connection first.
1117	You need to connect first.
1119	You cannot change the LocalHost at this time. A connection is in progress.
1120	Connection dropped by remote host.

TCP/IP Errors

10004	[10004] Interrupted system call.
10009	[10009] Bad file number.
10013	[10013] Access denied.
10014	[10014] Bad address.
10022	[10022] Invalid argument.
10024	[10024] Too many open files.
10035	[10035] Operation would block.
10036	[10036] Operation now in progress.
10037	[10037] Operation already in progress.
10038	[10038] Socket operation on nonsocket.
10039	[10039] Destination address required.
10040	[10040] Message is too long.
10041	[10041] Protocol wrong type for socket.
10042	[10042] Bad protocol option.
10043	[10043] Protocol is not supported.
10044	[10044] Socket type is not supported.
10045	[10045] Operation is not supported on socket.
10046	[10046] Protocol family is not supported.
10047	[10047] Address family is not supported by protocol family.
10048	[10048] Address already in use.
10049	[10049] Cannot assign requested address.
10050	[10050] Network is down.
10051	[10051] Network is unreachable.
10052	[10052] Net dropped connection or reset.
10053	[10053] Software caused connection abort.
10054	[10054] Connection reset by peer.
10055	[10055] No buffer space available.
10056	[10056] Socket is already connected.
10057	[10057] Socket is not connected.
10058	[10058] Cannot send after socket shutdown.
10059	[10059] Too many references, cannot splice.
10060	[10060] Connection timed out.
10061	[10061] Connection refused.
10062	[10062] Too many levels of symbolic links.
10063	[10063] File name is too long.
10064	[10064] Host is down.
10065	[10065] No route to host.
10066	[10066] Directory is not empty
10067	[10067] Too many processes.
10068	[10068] Too many users.
10069	[10069] Disc Quota Exceeded.
10070	[10070] Stale NFS file handle.
10071	[10071] Too many levels of remote in path.
10091	[10091] Network subsystem is unavailable.
10092	[10092] WINSOCK DLL Version out of range.
10093	[10093] Winsock is not loaded yet.
11001	[11001] Host not found.
11002	[11002] Nonauthoritative 'Host not found' (try again or check DNS setup).
11003	[11003] Nonrecoverable errors: FORMERR, REFUSED, NOTIMP.
11004	[11004] Valid name, no data record (check DNS setup).