Sun Java System Web Server 7.0 Update 4 NSAPI Developer's Guide

protocol_start_response() Function

The protocol_start_response function initiates the HTTP response for a specified session and request. If the protocol version is HTTP/0.9, the function does nothing, because that version has no concept of status. If the protocol version is HTTP/1.0 or higher, the function sends a status line followed by the response headers. Because of buffering, the status line and response headers might not be sent immediately. To flush the status line and response headers, use the net_flush function. Use this function to set up HTTP and prepare the client and server to receive the body or data of the response.

Note –

If you do not want the server to send the status line and response headers, set rq->senthdrs = 1 before calling protocol_start_response or sending any data to the client.


int protocol_start_response(Session *sn, Request *rq);

Return Values

The constant REQ_PROCEED if the operation succeeds, in which case you should send the data you were preparing to send.

The constant REQ_NOACTION if the operation succeeds but the request method is HEAD, in which case no data should be sent to the client.

The constant REQ_ABORTED if the operation fails.


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.


/* REQ_NOACTION means the request was HEAD */
if (protocol_start_response(sn, rq) == REQ_NOACTION) 
  filebuf_close(groupbuf); /* close our file*/    
  return REQ_PROCEED;

See Also

protocol_status() Function, net_flush() Function