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IPWorks 2022 Python Edition

Version 22.0 [Build 8171]

MCast Class

Properties   Methods   Events   Configuration Settings   Errors  

The MCast class is used to multicast UDP datagrams to multicast capable hosts in multicast capable subnets. It can act both as a client and a server and communicate with any number of hosts simultaneously, as well as generate and receive broadcast packets.

Syntax

class ipworks.MCast

Remarks

The MCast class is very similar to UDPPort, except for some additional properties that provide support for multicast datagrams. To send datagrams to a multicast group, simply assign the address of the group to remote_host. To receive datagrams from one or more groups, assign the group addresses to multicast_group one by one (after the class is activated. time_to_live allows to specify how many subnets a packet should be allowed to receive. receive_interface and send_interface allow you to select the network interface for multicast operations.

The class is activated/deactivated through the active property. This property enables or disables sends or receives. The data can be sent in the same way as UDPPort, by calling the send method with a Text parameter or via the data_to_send property. The destination is specified using the remote_host and remote_port properties. Inbound data is received through the on_data_in 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.

accept_dataEnables or disables data reception (the DataIn event).
activeEnables or disables sending and receiving data.
data_to_sendA string of data to be sent to the remote host. Write-only property.
local_hostThe name of the local host or user-assigned IP interface through which connections are initiated or accepted.
local_portThe UDP port in the local host where MCast binds.
loopbackEnables or disables loopback of data sent to the multicast group.
multicast_groupMulticast group to join or leave.
receive_interfaceThe interface with which to receive multicast packets. If empty, default is used.
remote_hostThe address of the remote host (multicast group).
remote_portThe UDP port in the remote host.
send_interfaceThe interface from which multicast packets are sent. If empty, default is used.
time_to_liveThe maximum number of subnets that a multicast datagram can traverse.

Method List


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

activateEnables sending and receiving data.
configSets or retrieves a configuration setting.
deactivateDisables sending and receiving data.
do_eventsProcesses events from the internal message queue.
pause_dataPauses data reception.
process_dataRe-enables data reception after a call to PauseData .
resetReset the class.
resolve_remote_hostResolves the hostname in RemoteHost to an IP address.
sendSends data to the remote host.
send_bytesSends data to the remote host.
send_textSends data to the remote host.

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.

on_data_inFired when data is received.
on_errorInformation about errors during data delivery.
on_ready_to_sendFired when the class is ready to send data.

Configuration Settings


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

CaptureIPPacketInfoUsed to capture the packet information.
DelayHostResolutionWhether the hostname is resolved when RemoteHost is set.
DestinationAddressUsed to get the destination address from the packet information.
DontFragmentUsed to set the Don't Fragment flag of outgoing packets.
LocalHostThe name of the local host through which connections are initiated or accepted.
LocalPortThe port in the local host where the class binds.
MaxPacketSizeThe maximum length of the packets that can be received.
QOSDSCPValueUsed to specify an arbitrary QOS/DSCP setting (optional).
QOSTrafficTypeUsed to specify QOS/DSCP settings (optional).
ShareLocalPortIf set to True, allows more than one instance of the class to be active on the same local port.
SourceIPAddressUsed to set the source IP address used when sending a packet.
SourceMacAddressUsed to set the source MAC address used when sending a packet.
UseConnectionDetermines whether to use a connected socket.
UseIPv6Whether or not to use IPv6.
AbsoluteTimeoutDetermines whether timeouts are inactivity timeouts or absolute timeouts.
FirewallDataUsed to send extra data to the firewall.
InBufferSizeThe size in bytes of the incoming queue of the socket.
OutBufferSizeThe size in bytes of the outgoing queue of the socket.
BuildInfoInformation about the product's build.
CodePageThe system code page used for Unicode to Multibyte translations.
LicenseInfoInformation about the current license.
ProcessIdleEventsWhether the class uses its internal event loop to process events when the main thread is idle.
SelectWaitMillisThe length of time in milliseconds the class will wait when DoEvents is called if there are no events to process.
UseInternalSecurityAPITells the class whether or not to use the system security libraries or an internal implementation.

accept_data Property

Enables or disables data reception (the DataIn event).

Syntax

def get_accept_data() -> bool: ...

def set_accept_data(value: bool) -> None: ...


accept_data = property(get_accept_data, set_accept_data)

Default Value

TRUE

Remarks

This property enables or disables data reception (the DataIn event). Setting this property to False, temporarily disables data reception (and the on_data_in event). Setting this property to True, re-enables data reception.

Note: It is recommended to use the pause_data or process_data method instead of setting this property.

active Property

Enables or disables sending and receiving data.

Syntax

def get_active() -> bool: ...

def set_active(value: bool) -> None: ...


active = property(get_active, set_active)

Default Value

FALSE

Remarks

This property enables or disables sending and receiving data. Setting this property to True makes MCast create a communication endpoint (socket) which can be used for sending and receiving UDP datagrams. Setting this property to False destroys the socket and disables data communications.

Note: It is recommended to use the activate or deactivate method instead of setting this property.

data_to_send Property

A string of data to be sent to the remote host. Write-only property.

Syntax

def set_data_to_send(value: bytes) -> None: ...


data_to_send = property(None, set_data_to_send)

Default Value

""

Remarks

This write-only property contains a string of data to be sent to the remote host. Assigning a string to this property makes the class send the string to the remote host. The send method provides similar functionality.

The TCP/IP subsystem attempts to send the string assigned to this property as a complete message. If socket buffers are full, or the message cannot be delivered for any reason, an error is fired, and no portion of the message is sent. This is different from TCP where portions of the messages can be sent. The class sends either a complete message or nothing at all.

If you are sending data to the remote host faster than it can process it, or faster than the network's bandwidth allows, the outgoing queue might fill up. When this happens, this property fails with error 10035: "[10035] Operation would block" (WSAEWOULDBLOCK). You can check this error, and then try to send the data again. .

This property is write-only.

local_host Property

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

Syntax

def get_local_host() -> str: ...

def set_local_host(value: str) -> None: ...


local_host = property(get_local_host, set_local_host)

Default Value

""

Remarks

The local_host 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 multi-homed hosts (machines with more than one IP interface) setting LocalHost to the value of an interface will make the class initiate connections (or accept in the case of server classs) only through that interface.

If the class is connected, the local_host 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 multi-homed hosts (machines with more than one IP interface).

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

local_port Property

The UDP port in the local host where MCast binds.

Syntax

def get_local_port() -> int: ...

def set_local_port(value: int) -> None: ...


local_port = property(get_local_port, set_local_port)

Default Value

0

Remarks

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

Setting it to 0 (default) enables the system to choose a port at random. The chosen port will be shown by this property after the connection is established.

This property cannot be changed once the class is active. Any attempt to set this property when the class is active will generate an error.

This property is useful when trying to send data to services that require a trusted port in the client side.

loopback Property

Enables or disables loopback of data sent to the multicast group.

Syntax

def get_loopback() -> bool: ...

def set_loopback(value: bool) -> None: ...


loopback = property(get_loopback, set_loopback)

Default Value

TRUE

Remarks

This property enables or disables loopback of data sent to the multicast group. Setting this property to False disables loopback of data sent through the class (normally loopback is enabled). This property is directly related to the IP_MULTICAST_LOOP socket option.

multicast_group Property

Multicast group to join or leave.

Syntax

def get_multicast_group() -> str: ...

def set_multicast_group(value: str) -> None: ...


multicast_group = property(get_multicast_group, set_multicast_group)

Default Value

""

Remarks

This property contains the multicast group to join or leave. Multicast groups are joined by assigning values to this property after the class is activated. More than one group may be joined at the same time. To define which interface to use, the receive_interface property is used.

Determining whether a group is left or joined is done by setting the first letter of multicast_group is "-" or "+". The default operation is join.

To remove the class from a multicast group once it is joined, simply assign this groupname (address) to multicast_group prefixed by a minus sign "-".

Example (Joining/Leaving Groups)

MCastControl.Active = true MCastControl.MulticastGroup = "+231.31.31.31" MCastControl.MulticastGroup = "+232.32.32.32" MCastControl.MulticastGroup = "-232.32.32.32" MCastControl.MulticastGroup = "-231.31.31.31"

receive_interface Property

The interface with which to receive multicast packets. If empty, default is used.

Syntax

def get_receive_interface() -> str: ...

def set_receive_interface(value: str) -> None: ...


receive_interface = property(get_receive_interface, set_receive_interface)

Default Value

""

Remarks

This property is useful when there is more than one network interface, and the one used for receiving multicast datagrams is not the default. If you wish to set an interface other than the system default, provide the IP address of the interface to be set.

This property is used together with the multicast_group property to join one or more multicast groups. The joining is done after the class is activated by assigning proper values to multicast_group.

remote_host Property

The address of the remote host (multicast group).

Syntax

def get_remote_host() -> str: ...

def set_remote_host(value: str) -> None: ...


remote_host = property(get_remote_host, set_remote_host)

Default Value

""

Remarks

This property contains the address of the remote host (multicast group). To send a multicast datagram, specify a remote_host value in the range of 224.0.0.0 to 239.255.255.255. These addresses are reserved as multicast addresses by IP.

remote_port Property

The UDP port in the remote host.

Syntax

def get_remote_port() -> int: ...

def set_remote_port(value: int) -> None: ...


remote_port = property(get_remote_port, set_remote_port)

Default Value

0

Remarks

This property contains the UDP port on the remote_host to send UDP datagrams to.

A valid port number (a value between 1 and 65535) is required.

send_interface Property

The interface from which multicast packets are sent. If empty, default is used.

Syntax

def get_send_interface() -> str: ...

def set_send_interface(value: str) -> None: ...


send_interface = property(get_send_interface, set_send_interface)

Default Value

""

Remarks

This property is useful when there is more than one network interface, and the one used for sending multicast datagrams is not the default. If you wish to set an interface other than the system default, provide the IP address of the interface to be set.

time_to_live Property

The maximum number of subnets that a multicast datagram can traverse.

Syntax

def get_time_to_live() -> int: ...

def set_time_to_live(value: int) -> None: ...


time_to_live = property(get_time_to_live, set_time_to_live)

Default Value

7

Remarks

This property contains the maximum number of subnets that a multicast datagram can traverse. The default value for this property is 7. This is an arbitrary value. You need to specify a value suitable for your application.

Multicast datagrams with this property set to 0 are not transmitted on any subnetwork. Multicast datagrams with this property set to 1 are delivered only on the local network. Multicast datagrams with this property set to greater than 1 may be delivered to more than one subnetwork if there are one or more multicast routers attached to the first-hop subnetwork.

A multicast router does not forward multicast datagrams with destination addresses between 224.0.0.0 and 224.0.0.255, inclusive, regardless of their time_to_live. This particular range of addresses is reserved for the use of routing protocols and other low-level topology discovery or maintenance protocols, such as gateway discovery and group membership reporting.

activate Method

Enables sending and receiving data.

Syntax

def activate() -> None: ...

Remarks

This method enables sending and receiving of data. When called the component will create a communication endpoint (socket) which can be used for sending and receiving UDP datagrams.

config Method

Sets or retrieves a configuration setting.

Syntax

def config(configuration_string: str) -> str: ...

Remarks

on_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 on_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.

deactivate Method

Disables sending and receiving data.

Syntax

def deactivate() -> None: ...

Remarks

This method disables sending and receiving of data. When called the component will dstroy the existing socket and disable data communications.

do_events Method

Processes events from the internal message queue.

Syntax

def do_events() -> None: ...

Remarks

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

pause_data Method

Pauses data reception.

Syntax

def pause_data() -> None: ...

Remarks

This method pauses data reception when called. While data reception is paused the on_data_in event will not fire. Call process_data to re-enable data reception.

process_data Method

Re-enables data reception after a call to PauseData .

Syntax

def process_data() -> None: ...

Remarks

This method re-enables data reception after a previous call to pause_data. When pause_data is called the on_data_in event will not fire. To re-enable data reception and allow on_data_in to fire call this method.

Note: This method is only used after previously calling pause_data. It does not need to be called to process incoming data by default.

reset Method

Reset the class.

Syntax

def reset() -> None: ...

Remarks

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

resolve_remote_host Method

Resolves the hostname in RemoteHost to an IP address.

Syntax

def resolve_remote_host() -> None: ...

Remarks

This method resolves the hostname specified by remote_host to an IP address. The resolved value is available in the remote_host property after this method returns.

In most cases calling this method is not necessary, the class will resolve the hostname automatically when necessary. If DelayHostResolution is True this method may be called to manually resolve remote_host if desired.

send Method

Sends data to the remote host.

Syntax

def send(text: bytes) -> None: ...

Remarks

This method sends data to the remote host. Calling this method is equivalent to setting the data_to_send property to Text.

send_bytes Method

Sends data to the remote host.

Syntax

def send_bytes(data: bytes) -> None: ...

Remarks

This method sends data to the remote host. Calling this method is equivalent to call on_send_bytes/send_text method.

send_text Method

Sends data to the remote host.

Syntax

def send_text(text: str) -> None: ...

Remarks

This method sends data to the remote host. Calling this method is equivalent to call send_bytes/on_send_text method.

on_data_in Event

Fired when data is received.

Syntax

class MCastDataInEventParams(object):
  @property
  def datagram() -> bytes: ...

  @property
  def source_address() -> str: ...

  @property
  def source_port() -> int: ...

# In class MCast:
@property
def on_data_in() -> Callable[[MCastDataInEventParams], None]: ...
@on_data_in.setter
def on_data_in(event_hook: Callable[[MCastDataInEventParams], None]) -> None: ...

Remarks

The on_data_in event is fired every time a new datagram is received.

Datagram contains the packet as sent by the remote host.

SourceAddress contains the IP number (Internet address) of the remote host, and SourcePort contains the port from which the packet originated.

Note that events are not re-entrant. Performing time consuming operations within this event will prevent it from firing again in a timely manner and may impact overall performance.

on_error Event

Information about errors during data delivery.

Syntax

class MCastErrorEventParams(object):
  @property
  def error_code() -> int: ...

  @property
  def description() -> str: ...

# In class MCast:
@property
def on_error() -> Callable[[MCastErrorEventParams], None]: ...
@on_error.setter
def on_error(event_hook: Callable[[MCastErrorEventParams], None]) -> None: ...

Remarks

The on_error event is fired in case of exceptional conditions during message processing. Normally the class fails with an error.

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.

on_ready_to_send Event

Fired when the class is ready to send data.

Syntax

class MCastReadyToSendEventParams(object):
# In class MCast:
@property
def on_ready_to_send() -> Callable[[MCastReadyToSendEventParams], None]: ...
@on_ready_to_send.setter
def on_ready_to_send(event_hook: Callable[[MCastReadyToSendEventParams], None]) -> None: ...

Remarks

The on_ready_to_send event indicates that the underlying TCP/IP subsystem is ready to accept data after a failed data_to_send.

MCast Configuration

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.

UDPPort Configuration Settings

CaptureIPPacketInfo:   Used to capture the packet information.

If this is set to true, the component will capture the IP packet information.

The default value for this setting is False.

Note: This setting is only available in Windows.

DelayHostResolution:   Whether the hostname is resolved when RemoteHost is set.

This setting specifies whether a hostname is resolved immediately when remote_host is set. If True the class will resolve the hostname and the IP address will be present in the remote_host property. If False, the hostname is not resolved until needed by the component when a method to connect or send data is called. If desired, resolve_remote_host may called to manually resolve the value in remote_host at any time.

The default value is False.

DestinationAddress:   Used to get the destination address from the packet information.

If CaptureIPPacketInfo is set to true, then this will be populated with the packet's destination address when a packet is received. This information will be accessible in the DataIn event.

Note: This setting is only available in Windows.

DontFragment:   Used to set the Don't Fragment flag of outgoing packets.

When set to True, packets sent by the class will have the Don't Fragment flag set. The default value is False.

LocalHost:   The name of the local host through which connections are initiated or accepted.

The local_host setting 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 multi-homed hosts (machines with more than one IP interface) setting LocalHost to the value of an interface will make the class initiate connections (or accept in the case of server classs) only through that interface.

If the class is connected, the local_host setting 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 multi-homed hosts (machines with more than one IP interface).

LocalPort:   The port in the local host where the class binds.

This 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 to 0 (default) enables the system to choose a port at random. The chosen port will be shown by local_port after the connection is established.

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

This; setting is useful when trying to connect to services that require a trusted port in the client side. An example is the remote shell (rsh) service in UNIX systems.

MaxPacketSize:   The maximum length of the packets that can be received.

This setting specifies the maximum size of the datagrams that the class will accept without truncation.

QOSDSCPValue:   Used to specify an arbitrary QOS/DSCP setting (optional).

UseConnection must be True to use this setting. This option allows you to specify an arbitrary DSCP value between 0 and 63. The default is 0. When set to the default value the component will not set a DSCP value.

Note: This setting uses the qWAVE API is only available on Windows 7, Windows Server 2008 R2, and later.

QOSTrafficType:   Used to specify QOS/DSCP settings (optional).

UseConnection must be True to use this setting. You may specify either the text or integer values: BestEffort (0), Background (1), ExcellentEffort (2), AudioVideo (3), Voice (4), and Control (5).

Note: This setting uses the qWAVE API which is only available on Windows Vista and Windows Server 2008 or above.

Note: QOSTrafficType must be set before setting active to true.

ShareLocalPort:   If set to True, allows more than one instance of the class to be active on the same local port.

This option must be set before the class is activated through the active property or it will have no effect.

The default value for this setting is False.

SourceIPAddress:   Used to set the source IP address used when sending a packet.

This configuration setting can be used to override the source IP address when sending a packet.

Note: This setting is only available in Windows and requires that the winpcap library be installed (or npcap with winpcap compatibility).

SourceMacAddress:   Used to set the source MAC address used when sending a packet.

This configuration setting can be used to override the source MAC address when sending a packet.

Note: This setting is only available in Windows and requires that the winpcap library be installed (or npcap with winpcap compatibility).

UseConnection:   Determines whether to use a connected socket.

UseConnection specifies whether the class should use a connected socket or not. The connection is defined as an association in between the local address/port and the remote address/port. As such, this is not a connection in the traditional TCP sense. What it means is only that the class will send and receive data only to and from the specified destination.

The default value for this setting is False.

UseIPv6:   Whether or not to use IPv6.

By default, the component expects an IPv4 address for local and remote host properties, and will create an IPv4 socket. To use IPv6 instead, set this to True.

Socket Configuration Settings

AbsoluteTimeout:   Determines whether timeouts are inactivity timeouts or absolute timeouts.

If AbsoluteTimeout is set to True, any method which does not complete within Timeout seconds will be aborted. By default, AbsoluteTimeout is False, and the timeout is an inactivity timeout.

Note: This option is not valid for UDP ports.

FirewallData:   Used to send extra data to the firewall.

When the firewall is a tunneling proxy, use this property to send custom (additional) headers to the firewall (e.g. headers for custom authentication schemes).

InBufferSize:   The size in bytes of the incoming queue of the socket.

This is the size of an internal queue in the TCP/IP stack. You can increase or decrease its size depending on the amount of data that you will be receiving. Increasing the value of the InBufferSize setting can provide significant improvements in performance in some cases.

Some TCP/IP implementations do not support variable buffer sizes. If that is the case, when the class is activated the InBufferSize reverts to its defined size. The same happens if you attempt to make it too large or too small.

OutBufferSize:   The size in bytes of the outgoing queue of the socket.

This is the size of an internal queue in the TCP/IP stack. You can increase or decrease its size depending on the amount of data that you will be sending. Increasing the value of the OutBufferSize setting can provide significant improvements in performance in some cases.

Some TCP/IP implementations do not support variable buffer sizes. If that is the case, when the class is activated the OutBufferSize reverts to its defined size. The same happens if you attempt to make it too large or too small.

Base Configuration 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:

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

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

IdentifierName
1ASCII
2NEXTSTEP
3JapaneseEUC
4UTF8
5ISOLatin1
6Symbol
7NonLossyASCII
8ShiftJIS
9ISOLatin2
10Unicode
11WindowsCP1251
12WindowsCP1252
13WindowsCP1253
14WindowsCP1254
15WindowsCP1250
21ISO2022JP
30MacOSRoman
10UTF16String
0x90000100UTF16BigEndian
0x94000100UTF16LittleEndian
0x8c000100UTF32String
0x98000100UTF32BigEndian
0x9c000100UTF32LittleEndian
65536Proprietary

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).
ProcessIdleEvents:   Whether the class uses its internal event loop to process events when the main thread is idle.

If set to False, the class will not fire internal idle events. Set this to False to use the class in a background thread on Mac OS. By default, this setting is True.

SelectWaitMillis:   The length of time in milliseconds the class will wait when DoEvents is called if there are no events to process.

If there are no events to process when do_events is called, the class will wait for the amount of time specified here before returning. The default value is 20.

UseInternalSecurityAPI:   Tells the class whether or not to use the system security libraries or an internal implementation.

By default the class will use the system security libraries to perform cryptographic functions. Setting this to True tells the class to use the internal implementation instead of using the system's security API.

MCast Errors

MCast Errors

104   MCast is already active.
106   You cannot change the local_port while the class is active.
107   You cannot change the LocalHost at this time. A connection is in progress.
109   MCast must be active for this operation.
112   Cannot change MaxPacketSize while the class is active.

SSL Errors

270   Cannot load specified security library.
271   Cannot open certificate store.
272   Cannot find specified certificate.
273   Cannot acquire security credentials.
274   Cannot find certificate chain.
275   Cannot verify certificate chain.
276   Error during handshake.
280   Error verifying certificate.
281   Could not find client certificate.
282   Could not find server certificate.
283   Error encrypting data.
284   Error decrypting data.

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 non-socket.
10039   [10039] Destination address required.
10040   [10040] Message too long.
10041   [10041] Protocol wrong type for socket.
10042   [10042] Bad protocol option.
10043   [10043] Protocol not supported.
10044   [10044] Socket type not supported.
10045   [10045] Operation not supported on socket.
10046   [10046] Protocol family not supported.
10047   [10047] Address family not supported by protocol family.
10048   [10048] Address already in use.
10049   [10049] Can't 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] Can't send after socket shutdown.
10059   [10059] Too many references, can't splice.
10060   [10060] Connection timed out.
10061   [10061] Connection refused.
10062   [10062] Too many levels of symbolic links.
10063   [10063] File name too long.
10064   [10064] Host is down.
10065   [10065] No route to host.
10066   [10066] Directory 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 not loaded yet.
11001   [11001] Host not found.
11002   [11002] Non-authoritative 'Host not found' (try again or check DNS setup).
11003   [11003] Non-recoverable errors: FORMERR, REFUSED, NOTIMP.
11004   [11004] Valid name, no data record (check DNS setup).

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IPWorks 2022 Python Edition - Version 22.0 [Build 8171]