anchor.diff:                           proxyConfiguration,
                            0,
                            reusedConnection,
  -                         secure);
  +                         is_secure);
   
       return connection;
     }
  
positive.code:           if (proxyIndex < proxyConfiguration.proxies.length) {
              // Try the next proxy in the list.
              _establishConnection(
                  host, port, proxyConfiguration, proxyIndex, false);
            } else {
              // Report the error through the HttpClientConnection object to
              // the client.
  
negative.code:     }
  
      // Find out if we want a secure socket.
      bool is_secure = (url.scheme == "https");
  
      // Find the TCP host and port.
      String host = url.domain;
      int port = url.port;
      if (port == 0) {
        port = is_secure ?
            HttpClient.DEFAULT_HTTPS_PORT :
            HttpClient.DEFAULT_HTTP_PORT;
      }
  