Make the fuchsia mojo/public repo the source of truth.

mojo/public/js/router.js

-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-define("mojo/public/js/router", [
-  "mojo/public/js/codec",
-  "mojo/public/js/core",
-  "mojo/public/js/connector",
-  "mojo/public/js/validator",
-], function(codec, core, connector, validator) {
-
-  var Connector = connector.Connector;
-  var MessageReader = codec.MessageReader;
-  var Validator = validator.Validator;
-
-  function Router(handle, connectorFactory) {
-    if (!core.isHandle(handle))
-      throw new Error("Router constructor: Not a handle");
-    if (connectorFactory === undefined)
-      connectorFactory = Connector;
-    this.connector_ = new connectorFactory(handle);
-    this.incomingReceiver_ = null;
-    this.nextRequestID_ = 0;
-    this.completers_ = new Map();
-    this.payloadValidators_ = [];
-
-    this.connector_.setIncomingReceiver({
-        accept: this.handleIncomingMessage_.bind(this),
-    });
-    this.connector_.setErrorHandler({
-        onError: this.handleConnectionError_.bind(this),
-    });
-  }
-
-  Router.prototype.close = function() {
-    this.completers_.clear();  // Drop any responders.
-    this.connector_.close();
-  };
-
-  Router.prototype.accept = function(message) {
-    this.connector_.accept(message);
-  };
-
-  Router.prototype.reject = function(message) {
-    // TODO(mpcomplete): no way to trasmit errors over a Connection.
-  };
-
-  Router.prototype.acceptAndExpectResponse = function(message) {
-    // Reserve 0 in case we want it to convey special meaning in the future.
-    var requestID = this.nextRequestID_++;
-    if (requestID == 0)
-      requestID = this.nextRequestID_++;
-
-    message.setRequestID(requestID);
-    var result = this.connector_.accept(message);
-    if (!result)
-      return Promise.reject(Error("Connection error"));
-
-    var completer = {};
-    this.completers_.set(requestID, completer);
-    return new Promise(function(resolve, reject) {
-      completer.resolve = resolve;
-      completer.reject = reject;
-    });
-  };
-
-  Router.prototype.setIncomingReceiver = function(receiver) {
-    this.incomingReceiver_ = receiver;
-  };
-
-  Router.prototype.setPayloadValidators = function(payloadValidators) {
-    this.payloadValidators_ = payloadValidators;
-  };
-
-  Router.prototype.encounteredError = function() {
-    return this.connector_.encounteredError();
-  };
-
-  Router.prototype.handleIncomingMessage_ = function(message) {
-    var noError = validator.validationError.NONE;
-    var messageValidator = new Validator(message);
-    var err = messageValidator.validateMessageHeader();
-    for (var i = 0; err === noError && i < this.payloadValidators_.length; ++i)
-      err = this.payloadValidators_[i](messageValidator);
-
-    if (err == noError)
-      this.handleValidIncomingMessage_(message);
-    else
-      this.handleInvalidIncomingMessage_(message, err);
-  };
-
-  Router.prototype.handleValidIncomingMessage_ = function(message) {
-    if (message.expectsResponse()) {
-      if (this.incomingReceiver_) {
-        this.incomingReceiver_.acceptWithResponder(message, this);
-      } else {
-        // If we receive a request expecting a response when the client is not
-        // listening, then we have no choice but to tear down the pipe.
-        this.close();
-      }
-    } else if (message.isResponse()) {
-      var reader = new MessageReader(message);
-      var requestID = reader.requestID;
-      var completer = this.completers_.get(requestID);
-      this.completers_.delete(requestID);
-      completer.resolve(message);
-    } else {
-      if (this.incomingReceiver_)
-        this.incomingReceiver_.accept(message);
-    }
-  }
-
-  Router.prototype.handleInvalidIncomingMessage_ = function(message, error) {
-    this.close();
-  }
-
-  Router.prototype.handleConnectionError_ = function(result) {
-    this.completers_.forEach(function(value) {
-      value.reject(result);
-    });
-    this.close();
-  };
-
-  // The TestRouter subclass is only intended to be used in unit tests.
-  // It defeats valid message handling and delgates invalid message handling.
-
-  function TestRouter(handle, connectorFactory) {
-    Router.call(this, handle, connectorFactory);
-  }
-
-  TestRouter.prototype = Object.create(Router.prototype);
-
-  TestRouter.prototype.handleValidIncomingMessage_ = function() {
-  };
-
-  TestRouter.prototype.handleInvalidIncomingMessage_ =
-      function(message, error) {
-        this.validationErrorHandler(error);
-      };
-
-  var exports = {};
-  exports.Router = Router;
-  exports.TestRouter = TestRouter;
-  return exports;
-});