Ns_ConnQueueHeaders(3aolserver) 			   AOLserver Library Procedures 			   Ns_ConnQueueHeaders(3aolserver)

__________________________________________________________________________________________________________________________________________________

NAME

       Ns_ConnQueueHeaders, Ns_ConnFlushHeaders - Routines to construct send HTTP response headers

SYNOPSIS

       #include "ns.h"

       void
       Ns_ConnFlushHeaders(conn, status)

       void
       Ns_ConnQueueHeaders(conn, status)

ARGUMENTS

       Ns_Conn	 conn	(in)	  Pointer to open connection.

       int	 status (in)	  HTTP response status.
_________________________________________________________________

DESCRIPTION

       These  function format headers pending in the outputheaders Ns_Set 0fRtto indicatenendsofoheaders.ture to be sent to the client.  The head-
       ers d0fR separators betweeneheaderTkey:evalueepairs andhattrailing status code (e.g., "HTTP/1.1 200 OK") is formatted as  a  single  string
       with

       int Ns_ConnFlushHeaders(conn)
	      This  routine  constructs  the  headers and then attempts to send them immediately to the client.  The result is either NS_OK if the
	      content was sent, NS_ERROR otherwise.

       void Ns_ConnQueueHeaders(conn)
	      This routine constructs the headers as with Ns_ConnFlushHeaders but does not send the data to the client.   Instead,  the  resulting
	      headers string is stored in an internal buffer to be sent later on the first call to Ns_ConnSend.  Delaying the flush of the content
	      helps increase performance by providing the opportunity to combine the headers and content responses into a single system call.

       Note that higher level routines which generate complete responses such as the Ns_ConnReturn routines or Ns_ConnFlush call Ns_ConnQueueHead-
       ers  automatically as needed.  Only custom code which constructs headers manually and sends content directly must include a call to Ns_Con-
       nQueueHeaders or Ns_ConnFlushHeaders before generating the output content.

EXAMPLES

       The following example demonstrates a simple response.  In this case, the headers are queued and sent with the small "hello" message on  the
       call to Ns_ConnPuts which internally calls Ns_ConnSend:

		Ns_ConnSetRequiredHeaders(conn, "text/plain", 5);
		Ns_ConnQueueHeaders(conn, 200);
		Ns_ConnPuts(conn, "hello");

SEE ALSO

       Ns_ConnSetHeaders(3), Ns_ConnSend(3)

KEYWORDS

       connection, headers

AOLserver								4.0					   Ns_ConnQueueHeaders(3aolserver)