tfNgRtDestExists

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#include <trsocket.h>

int tfNgRtDestExists	(
	ttUserInterface interfaceHandle,
	struct sockaddr_storage * sockAddrPtr
	);
Conditional parameter. See details in Parameters below.

Function Description

Find out whether a route to a destination exists, given the pair destination sockaddr_storagestructure and prefix length.

Parameters

• interfaceHandle

  Interface ID as returned by tfAddInterface(). NOTE: This parameter is conditional and only present when TM_USE_STRONG_ESL is defined at compile time. For more information, please see Appendix C: Strong End System Model / Weak End System Model.

• sockAddrPtr

  Destination IP address.

• prefixLen

  Destination prefix length.

Returns

• TM_ENOERROR

  Success.

• TM_EHOSTUNREACH

  No route to the destination.

• TM_EINVAL

  The interfaceHandle is invalid.

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