sn (session)

The sn parameter is a pointer to a session data structure. This parameter contains variables related to an entire session, that is, the time between the opening and closing of the TCP/IP connection between the client and the server. The same sn pointer is passed to each SAF called within each request for an entire session. The following list describes the most important fields in this data structure see Chapter 4, NSAPI Function Reference for information about NSAPI routines for manipulating the session data structure.

• sn->client

  Pointer to a pblock containing information about the client such as its IP address, DNS name, or certificate. If the client does not have a DNS name or if the name cannot be found, it will be set to -none.

• sn->csd

  Platform-independent client socket descriptor. This value is passed to the routines for reading from and writing to the client.