DPI_PACKET_LEN()--Get Length of DPI Packet

 #include <qtossapi.h>

 int    DPI_PACKET_LEN( unsigned char *packet_p );   

The DPI_PACKET_LEN() macro returns the length (number of bytes) of a Distributed Protocol Interface (DPI) packet.

Authorities and Locks

None.

Parameters

packet_p

(Input) A pointer to a (serialized) DPI packet.

Return Value

For more information, see "SNMP Subagent Problem Determination" in the Simple Network Management Protocol (SNMP) Support book.

Usage Notes

The DPI_PACKET_LEN() macro generates a C expression that returns an integer that represents the total length of a DPI packet. It uses the first 2 bytes (in network byte order) of the packet to calculate the length. The length returned includes these first 2 bytes.

Example

See Code disclaimer information for information pertaining to code examples.

 #include <qtossapi.h>
  unsigned char *pack_p;
  int            length;

  pack_p = mkDPIclose(SNMP_CLOSE_goingDown);
  if (pack_p) {
     length = DPI_PACKET_LEN(pack_p);
     /* Send packet to agent or subagent. */
  }