TraceRoute Component
Properties Methods Events Configuration Settings Errors
The TraceRoute component allows you to trace the path IP packets take on the Internet.
Syntax
nsoftware.IPWorks.Traceroute
Remarks
The component implements a standard IP Traceroute as defined in RFC 1393.
To use the component, simply call the TraceTo method and set the Host parameter to the domain name or IP address of the host you want to trace the path to. This is identical to setting the RemoteHost property to the domain name or IP address. The component will start sending probe packets towards the host, and as it receives replies it will fire Hop events giving information about the route. The same information is also provided in the Hops collection .
The ResolveNames property enables or disables DNS resolution of IP addresses received during the trace. If set to False only IP addresses are provided. If set to True the component will attempt to resolve the names of the hosts in the route. This may considerably increase the time it takes to complete the trace.
The HopTimeout property determines the maximum waiting time for a response in each hop of the trace, while the Timeout property defines the maximum waiting time for the whole trace. The HopLimit property specifies the maximum number of hops allowed for a trace.
Property List
The following is the full list of the properties of the component with short descriptions. Click on the links for further details.
| HopLimit | The maximum number of hops to allow for a trace. |
| Hops | A collection of hops to the RemoteHost . |
| HopTimeout | Maximum amount of time to wait for an individual hop to complete. |
| Idle | The current status of the component. |
| LocalHost | The name of the local host or user-assigned IP interface through which connections are initiated or accepted. |
| RemoteHost | The address of a host to trace to. |
| ResolveNames | Determines whether the component resolves the host name for each host during the trace. |
| Timeout | A timeout for the component. |
Method List
The following is the full list of the methods of the component with short descriptions. Click on the links for further details.
| Config | Sets or retrieves a configuration setting . |
| DoEvents | Processes events from the internal message queue. |
| Interrupt | Interrupt the current method. |
| TraceTo | Trace the route to a host. |
Event List
The following is the full list of the events fired by the component with short descriptions. Click on the links for further details.
| Error | Information about errors during data delivery. |
| Hop | Fired for each hop in the trace to the RemoteHost . |
| HopResolved | Fired when the name of a hop address is found. |
Configuration Settings
The following is a list of configuration settings for the component with short descriptions. Click on the links for further details.
| HopTimeoutInMilliseconds | The hop timeout is treated as milliseconds. |
| TimeoutInMilliseconds | The timeout is treated as milliseconds. |
| IcmpDllTimeout | The timeout for the component when using the icmp.dll. |
| MaxMessageSize | The maximum length of the messages that can be received. |
| MulticastTTL | The time to live (TTL) value for multicast ICMP packets sent by the component. |
| UseConnection | Determines whether to use a connected socket. |
| TimeoutInMilliseconds | The timeout is treated as milliseconds. |
| UseICMPDLL | Use the icmp.dll included on Windows Systems. |
| UseIPHLPDLL | Use the iphlpapi.dll included on Windows Systems. |
| AbsoluteTimeout | Determines whether timeouts are inactivity timeouts or absolute timeouts. |
| FirewallData | Used to send extra data to the firewall. |
| InBufferSize | The size in bytes of the incoming queue of the socket. |
| OutBufferSize | The size in bytes of the outgoing queue of the socket. |
| CodePage | The system code page used for Unicode to Multibyte translations. |