Function http_send

cups/http.c:4367–4546

 */

static int				/* O - 0 on success, non-zero on error */
http_send(http_t       *http,		/* I - HTTP connection */
          http_state_t request,		/* I - Request code */
	  const char   *uri)		/* I - URI */
{
  int		i;			/* Looping var */
  char		buf[1024];		/* Encoded URI buffer */
  const char	*value;			/* Field value */
  static const char * const codes[] =	/* Request code strings */
		{
		  NULL,
		  "OPTIONS",
		  "GET",
		  NULL,
		  "HEAD",
		  "POST",
		  NULL,
		  NULL,
		  "PUT",
		  NULL,
		  "DELETE",
		  "TRACE",
		  "CLOSE",
		  NULL,
		  NULL
		};


  DEBUG_printf(("4http_send(http=%p, request=HTTP_%s, uri=\"%s\")", (void *)http, codes[request], uri));

  if (http == NULL || uri == NULL)
    return (-1);

 /*
  * Set the User-Agent field if it isn't already...
  */

  if (!http->fields[HTTP_FIELD_USER_AGENT])
  {
    if (http->default_fields[HTTP_FIELD_USER_AGENT])
      httpSetField(http, HTTP_FIELD_USER_AGENT, http->default_fields[HTTP_FIELD_USER_AGENT]);
    else
      httpSetField(http, HTTP_FIELD_USER_AGENT, cupsUserAgent());
  }

 /*
  * Set the Accept-Encoding field if it isn't already...
  */

  if (!http->fields[HTTP_FIELD_ACCEPT_ENCODING] && http->default_fields[HTTP_FIELD_ACCEPT_ENCODING])
    httpSetField(http, HTTP_FIELD_ACCEPT_ENCODING, http->default_fields[HTTP_FIELD_ACCEPT_ENCODING]);

 /*
  * Encode the URI as needed...
  */

  _httpEncodeURI(buf, uri, sizeof(buf));