Function cupsGetResponse

cups/request.c:310–472

 */

ipp_t *					/* O - Response or @code NULL@ on HTTP error */
cupsGetResponse(http_t     *http,	/* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */
                const char *resource)	/* I - HTTP resource for POST */
{
  http_status_t	status;			/* HTTP status */
  ipp_state_t	state;			/* IPP read state */
  ipp_t		*response = NULL;	/* IPP response */


  DEBUG_printf(("cupsGetResponse(http=%p, resource=\"%s\")", (void *)http, resource));
  DEBUG_printf(("1cupsGetResponse: http->state=%d", http ? http->state : HTTP_STATE_ERROR));

 /*
  * Connect to the default server as needed...
  */

  if (!http)
  {
    _cups_globals_t *cg = _cupsGlobals();
					/* Pointer to library globals */

    if ((http = cg->http) == NULL)
    {
      _cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("No active connection."), 1);
      DEBUG_puts("1cupsGetResponse: No active connection - returning NULL.");
      return (NULL);
    }
  }

  if (http->state != HTTP_STATE_POST_RECV && http->state != HTTP_STATE_POST_SEND)
  {
    _cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("No request sent."), 1);
    DEBUG_puts("1cupsGetResponse: Not in POST state - returning NULL.");
    return (NULL);
  }

 /*
  * Check for an unfinished chunked request...
  */

  if (http->data_encoding == HTTP_ENCODING_CHUNKED)
  {
   /*
    * Send a 0-length chunk to finish off the request...
    */

    DEBUG_puts("2cupsGetResponse: Finishing chunked POST...");

    if (httpWrite2(http, "", 0) < 0)
    {
      _cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("Unable to finish request."), 1);
      return (NULL);
    }
  }

 /*
  * Wait for a response from the server...
  */