Function cupsSendRequest

cups/request.c:591–898

 */

http_status_t				/* O - Initial HTTP status */
cupsSendRequest(http_t     *http,	/* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */
                ipp_t      *request,	/* I - IPP request */
                const char *resource,	/* I - Resource path */
		size_t     length)	/* I - Length of data to follow or @code CUPS_LENGTH_VARIABLE@ */
{
  http_status_t		status;		/* Status of HTTP request */
  int			got_status;	/* Did we get the status? */
  ipp_state_t		state;		/* State of IPP processing */
  http_status_t		expect;		/* Expect: header to use */
  char			date[256];	/* Date: header value */
  int			digest;		/* Are we using Digest authentication? */


  DEBUG_printf(("cupsSendRequest(http=%p, request=%p(%s), resource=\"%s\", length=" CUPS_LLFMT ")", (void *)http, (void *)request, request ? ippOpString(request->request.op.operation_id) : "?", resource, CUPS_LLCAST length));

 /*
  * Range check input...
  */

  if (!request || !resource)
  {
    _cupsSetError(IPP_STATUS_ERROR_INTERNAL, strerror(EINVAL), 0);

    return (HTTP_STATUS_ERROR);
  }

 /*
  * Get the default connection as needed...
  */

  if (!http && (http = _cupsConnect()) == NULL)
    return (HTTP_STATUS_SERVICE_UNAVAILABLE);

 /*
  * If the prior request was not flushed out, do so now...
  */

  if (http->state == HTTP_STATE_GET_SEND ||
      http->state == HTTP_STATE_POST_SEND)
  {
    DEBUG_puts("2cupsSendRequest: Flush prior response.");
    httpFlush(http);
  }
  else if (http->state != HTTP_STATE_WAITING)
  {
    DEBUG_printf(("1cupsSendRequest: Unknown HTTP state (%d), "
                  "reconnecting.", http->state));
    if (httpReconnect2(http, 30000, NULL))
      return (HTTP_STATUS_ERROR);
  }

#ifdef HAVE_TLS
 /*
  * See if we have an auth-info attribute and are communicating over
  * a non-local link.  If so, encrypt the link so that we can pass
  * the authentication information securely...
  */