The request_header function finds an entry in the pblock containing the client’s HTTP request headers (rq->headers). You must use this function rather than pblock_findval when accessing the client headers, because the server might begin processing the request before the headers have been completely read.
int request_header(char *name, char **value, Session *sn, Request *rq);
A result code, REQ_PROCEED if the header was found, REQ_ABORTED if the header was not found, or REQ_EXIT if there was an error reading from the client.
char *name is the name of the header.
char **value is the address where the function will place the value of the specified header. If no address is found, the function stores a NULL.
Session *sn is the session.
Request *rq is the request.
The Session and Request parameters are the same parameters as the ones passed into your SAF.