Function _httpUpdate

cups/http.c:2762–2968

 */

int					/* O - 1 to continue, 0 to stop */
_httpUpdate(http_t        *http,	/* I - HTTP connection */
            http_status_t *status)	/* O - Current HTTP status */
{
  char		line[_HTTP_MAX_BUFFER],	/* Line from connection... */
		*value;			/* Pointer to value on line */
  http_field_t	field;			/* Field index */
  int		major, minor;		/* HTTP version numbers */


  DEBUG_printf(("_httpUpdate(http=%p, status=%p), state=%s", (void *)http, (void *)status, httpStateString(http->state)));

  /* When doing non-blocking I/O, make sure we have a whole line... */
  if (!http->blocking)
  {
    ssize_t	bytes;			/* Bytes "peeked" from connection */

    /* See whether our read buffer is full... */
    DEBUG_printf(("2_httpUpdate: used=%d", http->used));

    if (http->used < sizeof(http->buffer))
    {
      /* No, try filling in more data... */
      if ((bytes = http_read(http, http->buffer + http->used, sizeof(http->buffer) - (size_t)http->used, /*timeout*/0)) > 0)
      {
	DEBUG_printf(("2_httpUpdate: Read %d bytes.", (int)bytes));
	http->used += (int)bytes;
      }
    }

    /* Peek at the incoming data... */
    if (!http->used || !memchr(http->buffer, '\n', (size_t)http->used))
    {
      /* Don't have a full line, tell the reader to try again when there is more data... */
      DEBUG_puts("1_htttpUpdate: No newline in buffer yet.");
      if ((size_t)http->used == sizeof(http->buffer))
	*status = HTTP_STATUS_ERROR;
      else
	*status = HTTP_STATUS_CONTINUE;
      return (0);
    }

    DEBUG_puts("2_httpUpdate: Found newline in buffer.");
  }

 /*
  * Grab a single line from the connection...
  */

  if (!httpGets(line, sizeof(line), http))
  {
    DEBUG_puts("1_httpUpdate: Error reading request line.");
    *status = HTTP_STATUS_ERROR;
    return (0);
  }

  DEBUG_printf(("2_httpUpdate: Got \"%s\"", line));