SignalR將0.5.3升級到1.0.x問題

Question

我最近從signalR 0.5.3升級/升級到了1.0.x rc2，並且在創建連接時遇到問題。

問題是我遇到了例外：

TypeError：res為空

connection.appRelativeUrl = res.Url;

我創建連接的腳本已被剝離回默認的演示代碼：

        var connection = $.connection('/signalr');

        connection.start(function () {
            console.log("connection started!");
        });

仍然我得到錯誤。 當我進入jquery.signalr.js文件時，我點擊了連接代碼：

 var url = connection.url + "/negotiate";
 connection.log("Negotiating with '" + url + "'.");
 $.ajax({
         url: url,
         global: false,
         cache: false,
         type: "GET",
         data: {},
         dataType: connection.ajaxDataType,
         error: function (error) {
              $(connection).triggerHandler(events.onError, [error.responseText]);
              deferred.reject("SignalR: Error during negotiation request: " + error.responseText);
              // Stop the connection if negotiate failed
              connection.stop();
          },
          success: function (res) {
               var keepAliveData = connection.keepAliveData; 
               connection.appRelativeUrl = res.Url;

我到達最后一行，res參數為null，這轟炸了我的連接嘗試。 我已經更新了所有signalR依賴項，更改了所有集線器客戶端調用以使用集線器中的其他客戶端/服務器屬性。

我的/ signalr / hubs js腳本正在創建中，並且具有所有正確的方法映射到我期望可用的服務器端中心方法。 js文件如下：

    /*!
    * ASP.NET SignalR JavaScript Library v1.0.0
    * http://signalr.net/
    *
    * Copyright Microsoft Open Technologies, Inc. All rights reserved.
    * Licensed under the Apache 2.0
    * https://github.com/SignalR/SignalR/blob/master/LICENSE.md
    *
    */

   /// <reference path="..\..\SignalR.Client.JS\Scripts\jquery-1.6.4.js" />
   /// <reference path="jquery.signalR.js" />

      (function ($, window) {
       /// <param name="$" type="jQuery" />

   "use strict";

    if (typeof ($.signalR) !== "function") {
        throw new Error("SignalR: SignalR is not loaded. Please ensure jquery.signalR-x.js is referenced before ~/signalr/hubs.");
    }

    var signalR = $.signalR;

    function makeProxyCallback(hub, callback) {
        return function () {
            // Call the client hub method
            callback.apply(hub, $.makeArray(arguments));
        };
    }

    function registerHubProxies(instance, shouldSubscribe) {
        var key, hub, memberKey, memberValue, subscriptionMethod;

        for (key in instance) {
            if (instance.hasOwnProperty(key)) {
                hub = instance[key];

                if (!(hub.hubName)) {
                    // Not a client hub
                    continue;
                }

                if (shouldSubscribe) {
                    // We want to subscribe to the hub events
                    subscriptionMethod = hub.on;
                }
                else {
                    // We want to unsubscribe from the hub events
                    subscriptionMethod = hub.off;
                }

                // Loop through all members on the hub and find client hub functions to subscribe/unsubscribe
                for (memberKey in hub.client) {
                    if (hub.client.hasOwnProperty(memberKey)) {
                        memberValue = hub.client[memberKey];

                        if (!$.isFunction(memberValue)) {
                            // Not a client hub function
                            continue;
                        }

                        subscriptionMethod.call(hub, memberKey, makeProxyCallback(hub, memberValue));
                    }
                }
            }
        }
    }

    $.hubConnection.prototype.createHubProxies = function () {
        var proxies = {};
        this.starting(function () {
            // Register the hub proxies as subscribed
            // (instance, shouldSubscribe)
            registerHubProxies(proxies, true);

            this._registerSubscribedHubs();
        }).disconnected(function () {
            // Unsubscribe all hub proxies when we "disconnect".  This is to ensure that we do not re-add functional call backs.
            // (instance, shouldSubscribe)
            registerHubProxies(proxies, false);
        });

        proxies.chatHub = this.createHubProxy('chatHub'); 
        proxies.chatHub.client = { };
        proxies.chatHub.server = {
            exitChat: function (chatId) {
            /// <summary>Calls the ExitChat method on the server-side ChatHub hub.&#10;Returns a jQuery.Deferred() promise.</summary>
            /// <param name=\"chatId\" type=\"String\">Server side type is System.String</param>
                return proxies.chatHub.invoke.apply(proxies.chatHub, $.merge(["ExitChat"], $.makeArray(arguments)));
             },

            getChat: function (chatId) {
            /// <summary>Calls the GetChat method on the server-side ChatHub hub.&#10;Returns a jQuery.Deferred() promise.</summary>
            /// <param name=\"chatId\" type=\"String\">Server side type is System.String</param>
                return proxies.chatHub.invoke.apply(proxies.chatHub, $.merge(["GetChat"], $.makeArray(arguments)));
             },

            joinChat: function (chatId, inviteeUserIds, groupId) {
            /// <summary>Calls the JoinChat method on the server-side ChatHub hub.&#10;Returns a jQuery.Deferred() promise.</summary>
            /// <param name=\"chatId\" type=\"String\">Server side type is System.String</param>
            /// <param name=\"inviteeUserIds\" type=\"Object\">Server side type is System.String[]</param>
            /// <param name=\"groupId\" type=\"String\">Server side type is System.String</param>
                return proxies.chatHub.invoke.apply(proxies.chatHub, $.merge(["JoinChat"], $.makeArray(arguments)));
             },

            sendChatMessage: function (chatId, messageId, message) {
            /// <summary>Calls the SendChatMessage method on the server-side ChatHub hub.&#10;Returns a jQuery.Deferred() promise.</summary>
            /// <param name=\"chatId\" type=\"String\">Server side type is System.String</param>
            /// <param name=\"messageId\" type=\"String\">Server side type is System.String</param>
            /// <param name=\"message\" type=\"String\">Server side type is System.String</param>
                return proxies.chatHub.invoke.apply(proxies.chatHub, $.merge(["SendChatMessage"], $.makeArray(arguments)));
             },

            typing: function (chatId, isTyping) {
            /// <summary>Calls the Typing method on the server-side ChatHub hub.&#10;Returns a jQuery.Deferred() promise.</summary>
            /// <param name=\"chatId\" type=\"String\">Server side type is System.String</param>
            /// <param name=\"isTyping\" type=\"\">Server side type is System.Boolean</param>
                return proxies.chatHub.invoke.apply(proxies.chatHub, $.merge(["Typing"], $.makeArray(arguments)));
             }
        };

        proxies.debugHub = this.createHubProxy('debugHub'); 
        proxies.debugHub.client = { };
        proxies.debugHub.server = {
            registerWithDebugger: function () {
            /// <summary>Calls the RegisterWithDebugger method on the server-side DebugHub hub.&#10;Returns a jQuery.Deferred() promise.</summary>
                return proxies.debugHub.invoke.apply(proxies.debugHub, $.merge(["RegisterWithDebugger"], $.makeArray(arguments)));
             }
        };

        proxies.groupHub = this.createHubProxy('groupHub'); 
        proxies.groupHub.client = { };
        proxies.groupHub.server = {
            joinGroup: function (userId, groupId) {
            /// <summary>Calls the JoinGroup method on the server-side GroupHub hub.&#10;Returns a jQuery.Deferred() promise.</summary>
            /// <param name=\"userId\" type=\"String\">Server side type is System.String</param>
            /// <param name=\"groupId\" type=\"String\">Server side type is System.String</param>
                return proxies.groupHub.invoke.apply(proxies.groupHub, $.merge(["JoinGroup"], $.makeArray(arguments)));
             },

            joinGroups: function (userId) {
            /// <summary>Calls the JoinGroups method on the server-side GroupHub hub.&#10;Returns a jQuery.Deferred() promise.</summary>
            /// <param name=\"userId\" type=\"String\">Server side type is System.String</param>
                return proxies.groupHub.invoke.apply(proxies.groupHub, $.merge(["JoinGroups"], $.makeArray(arguments)));
             },

            leaveGroup: function (userId, groupId) {
            /// <summary>Calls the LeaveGroup method on the server-side GroupHub hub.&#10;Returns a jQuery.Deferred() promise.</summary>
            /// <param name=\"userId\" type=\"String\">Server side type is System.String</param>
            /// <param name=\"groupId\" type=\"String\">Server side type is System.String</param>
                return proxies.groupHub.invoke.apply(proxies.groupHub, $.merge(["LeaveGroup"], $.makeArray(arguments)));
             }
        };

        proxies.userHub = this.createHubProxy('userHub'); 
        proxies.userHub.client = { };
        proxies.userHub.server = {
            registerUserClient: function (userId) {
            /// <summary>Calls the RegisterUserClient method on the server-side UserHub hub.&#10;Returns a jQuery.Deferred() promise.</summary>
            /// <param name=\"userId\" type=\"String\">Server side type is System.String</param>
                return proxies.userHub.invoke.apply(proxies.userHub, $.merge(["RegisterUserClient"], $.makeArray(arguments)));
             },

            updateUserClientStatus: function (userId, latestHeartbeat, latestInteractivity) {
            /// <summary>Calls the UpdateUserClientStatus method on the server-side UserHub hub.&#10;Returns a jQuery.Deferred() promise.</summary>
            /// <param name=\"userId\" type=\"String\">Server side type is System.String</param>
            /// <param name=\"latestHeartbeat\" type=\"Object\">Server side type is System.DateTime</param>
            /// <param name=\"latestInteractivity\" type=\"Object\">Server side type is System.DateTime</param>
                return proxies.userHub.invoke.apply(proxies.userHub, $.merge(["UpdateUserClientStatus"], $.makeArray(arguments)));
             }
        };

        return proxies;
    };

    signalR.hub = $.hubConnection("/signalr", { useDefaultPath: false });
    $.extend(signalR, signalR.hub.createHubProxies());

   }(window.jQuery, window));

有任何想法嗎？

Answer 1

事實證明，上面的代碼沒有錯。 從SignalR 0.5.3到1.0.x的遷移毫無困難。 問題是我的開發環境相當混亂。

在我們的案例中有一個MASSIVE陷阱-我們也在使用RavenDB。 兩者都依賴於不同版本的NewtonSoft JSON。

如果您同時使用這兩種技術，請注意將在NewtonsoftJson早期版本中格式化的JSON對象從一個傳遞到另一個，因為生成的JSON序列化對象不向后兼容。

從Raven傳遞到SignalR js客戶端時，您必須手動映射它們。