function connect(
    serverVersion = undefined, hostPrefix = undefined, uriPrefix = undefined,
    spdyEnabled = undefined) {
  connectForwardChannel(serverVersion, hostPrefix, uriPrefix, spdyEnabled);
  completeBackChannel();
}
@param {number=} serverVersion
@param {string=} hostPrefix
@param {string=} uriPrefix
@param {boolean=} spdyEnabled