EDIT: Look at the bottom of this post for updates.
My SignalR implementation works perfectly on my local system. But when I deployed it out to my server it doesnt seem to work. Its an MVC project.
My signalR jQuery is as follows:
var clientHub = $.connection.gamehub; $(function () { var signalRHubInitialized = false; var image = $("#Ico"); var count = 0; initializeSignalRHubStore(); function initializeSignalRHubStore() { if (signalRHubInitialized) return; try { clientHub.client.broadcastMessage = function (message) { if (message === "Refresh") reloadIndexPartial(); }; $.connection.hub.start().done(function () { clientHub.server.initialize($("#NotifierEntity").val()); signalRHubInitialized = true; }); } catch (err) { signalRHubInitialized = false; } }; function reloadIndexPartial() { //$.post('@(Url.Action("LivePartial", "Scrim", null, Request.Url.Scheme))') var id = $("#SeriesDetail_Id").val(); $.post('/Scrim/LivePartial/' + id) .done(function (response) { try { count = count + 1; var favicon = new Favico({ animation: 'pop', image: image }); favicon.badge(count); } catch (exception) { } $("#summary-wrapper").html(""); $("#summary-wrapper").html(response); if (!signalRHubInitialized) initializeSignalRHubStore(); }); }; }); I downloaded Fiddler to see what was going on:
/signalr/hubs returned a HTTP200
GET http://sitename.com/signalr/hubs HTTP/1.1 Host: sitename.com Connection: keep-alive User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.113 Safari/537.36 Accept: */* Referer: http://sitename.com/scrim/Live/2835 Accept-Encoding: gzip, deflate Accept-Language: en-US,en;q=0.8 Cookie: _gat=1; _ga=GA1.2.1342148401.1475084375; _gid=GA1.2.2092796788.1503865866 negotiate returned at HTTP200
GET http://sitename.com/signalr/negotiate?clientProtocol=1.5&connectionData=%5B%7B%22name%22%3A%22gamehub%22%7D%5D&_=1505151041506 HTTP/1.1 Host: sitename.com Connection: keep-alive Accept: text/plain, */*; q=0.01 X-Requested-With: XMLHttpRequest User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.113 Safari/537.36 Content-Type: application/json; charset=UTF-8 Referer: http://sitename.com/scrim/Live/2835 Accept-Encoding: gzip, deflate Accept-Language: en-US,en;q=0.8 Cookie: _gat=1; _ga=GA1.2.1342148401.1475084375; _gid=GA1.2.2092796788.1503865866 connect, didnt return anything
GET http://sitename.com/signalr/connect?transport=serverSentEvents&clientProtocol=1.5&connectionToken=S8rqz2NPvVSJxbS1%2FpLm7yHTinGHWK1SnAwh8IfYA%2BP7nVb9RV%2FJzSFsf8Q%2BTv6Z%2Fae%2FIoZKlHKyeTxaEn3obg%2FVViYTB5HZxnrvKvtBZtQopvGPdj1i4o8Z9wGlCz3%2F&connectionData=%5B%7B%22name%22%3A%22gamehub%22%7D%5D&tid=10 HTTP/1.1 Host: sitename.com Connection: keep-alive Accept: text/event-stream Cache-Control: no-cache User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.113 Safari/537.36 Referer: http://sitename.com/scrim/Live/2835 Accept-Encoding: gzip, deflate Accept-Language: en-US,en;q=0.8 Cookie: _gat=1; _ga=GA1.2.1342148401.1475084375; _gid=GA1.2.2092796788.1503865866 start returned a HTTP200
GET http://sitename.com/signalr/start?transport=serverSentEvents&clientProtocol=1.5&connectionToken=S8rqz2NPvVSJxbS1%2FpLm7yHTinGHWK1SnAwh8IfYA%2BP7nVb9RV%2FJzSFsf8Q%2BTv6Z%2Fae%2FIoZKlHKyeTxaEn3obg%2FVViYTB5HZxnrvKvtBZtQopvGPdj1i4o8Z9wGlCz3%2F&connectionData=%5B%7B%22name%22%3A%22gamehub%22%7D%5D&_=1505151041507 HTTP/1.1 Host: sitename.com Connection: keep-alive Accept: text/plain, */*; q=0.01 X-Requested-With: XMLHttpRequest User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.113 Safari/537.36 Content-Type: application/json; charset=UTF-8 Referer: http://sitename.com/scrim/Live/2835 Accept-Encoding: gzip, deflate Accept-Language: en-US,en;q=0.8 Cookie: _gat=1; _ga=GA1.2.1342148401.1475084375; _gid=GA1.2.2092796788.1503865866 Send returned a HTTP200
POST http://sitename.com/signalr/send?transport=serverSentEvents&clientProtocol=1.5&connectionToken=S8rqz2NPvVSJxbS1%2FpLm7yHTinGHWK1SnAwh8IfYA%2BP7nVb9RV%2FJzSFsf8Q%2BTv6Z%2Fae%2FIoZKlHKyeTxaEn3obg%2FVViYTB5HZxnrvKvtBZtQopvGPdj1i4o8Z9wGlCz3%2F&connectionData=%5B%7B%22name%22%3A%22gamehub%22%7D%5D HTTP/1.1 Host: sitename.com Connection: keep-alive Content-Length: 2227 Accept: text/plain, */*; q=0.01 Origin: http://sitename.com X-Requested-With: XMLHttpRequest User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.113 Safari/537.36 Content-Type: application/x-www-form-urlencoded; charset=UTF-8 Referer: http://sitename.com/scrim/Live/2835 Accept-Encoding: gzip, deflate Accept-Language: en-US,en;q=0.8 Cookie: _gat=1; _ga=GA1.2.1342148401.1475084375; _gid=GA1.2.2092796788.1503865866 data=%7B%22H%22%3A%22gamehub%22%2C%22M%22%3A%22Initialize%22%2C%22A%22%3A%5B%22%7B%5C%22SqlQuery%5C%22%3A%5C%22SELECT+%5C%5Cr%5C%5Cn++++%5BExtent1%5D.%5BId%5D+AS+%5BId%5D%2C+%5C%5Cr%5C%5Cn++++%5BExtent1%5D.%5BGameGuid%5D+AS+%5BGameGuid%5D%2C+%5C%5Cr%5C%5Cn++++%5BExtent1%5D.%5BDate%5D+AS+%5BDate%5D%2C+%5C%5Cr%5C%5Cn++++%5BExtent1%5D.%5BTeamOneScore%5D+AS+%5BTeamOneScore%5D%2C+%5C%5Cr%5C%5Cn++++%5BExtent1%5D.%5BTeamZeroScore%5D+AS+%5BTeamZeroScore%5D%2C+%5C%5Cr%5C%5Cn++++%5BExtent1%5D.%5BTeamOneId%5D+AS+%5BTeamOneId%5D%2C+%5C%5Cr%5C%5Cn++++%5BExtent1%5D.%5BTeamZeroId%5D+AS+%5BTeamZeroId%5D%2C+%5C%5Cr%5C%5Cn++++%5BExtent1%5D.%5BGameVariantId%5D+AS+%5BGameVariantId%5D%2C+%5C%5Cr%5C%5Cn++++%5BExtent1%5D.%5BMapId%5D+AS+%5BMapId%5D%2C+%5C%5Cr%5C%5Cn++++%5BExtent1%5D.%5BDuration%5D+AS+%5BDuration%5D%2C+%5C%5Cr%5C%5Cn++++%5BExtent1%5D.%5BSeriesId%5D+AS+%5BSeriesId%5D%2C+%5C%5Cr%5C%5Cn++++%5BExtent1%5D.%5BResult%5D+AS+%5BResult%5D%2C+%5C%5Cr%5C%5Cn++++%5BExtent1%5D.%5BActive%5D+AS+%5BActive%5D%5C%5Cr%5C%5Cn++++FROM+%5Bdbo%5D.%5BGame%5D+AS+%5BExtent1%5D%5C%5Cr%5C%5Cn++++WHERE+(%5BExtent1%5D.%5BActive%5D+%3D+1)+AND+(%5BExtent1%5D.%5BSeriesId%5D+%3D+%40p__linq__0)%5C%22%2C%5C%22SqlConnectionString%5C%22%3A%5C%22Data+Source%3DWIN-1J1JAEOEU33%3BInitial+Catalog%3DSiteName%3BIntegrated+Security%3DTrue%3BMultipleActiveResultSets%3DTrue%3B%5C%22%2C%5C%22SqlParameters%5C%22%3A%5B%7B%5C%22CompareInfo%5C%22%3A0%2C%5C%22XmlSchemaCollectionDatabase%5C%22%3A%5C%22%5C%22%2C%5C%22XmlSchemaCollectionOwningSchema%5C%22%3A%5C%22%5C%22%2C%5C%22XmlSchemaCollectionName%5C%22%3A%5C%22%5C%22%2C%5C%22DbType%5C%22%3A11%2C%5C%22LocaleId%5C%22%3A0%2C%5C%22ParameterName%5C%22%3A%5C%22p__linq__0%5C%22%2C%5C%22Precision%5C%22%3A0%2C%5C%22Scale%5C%22%3A0%2C%5C%22SqlDbType%5C%22%3A8%2C%5C%22SqlValue%5C%22%3A%7B%5C%22IsNull%5C%22%3Afalse%2C%5C%22Value%5C%22%3A2835%7D%2C%5C%22UdtTypeName%5C%22%3A%5C%22%5C%22%2C%5C%22TypeName%5C%22%3A%5C%22%5C%22%2C%5C%22Value%5C%22%3A2835%2C%5C%22Direction%5C%22%3A1%2C%5C%22IsNullable%5C%22%3Afalse%2C%5C%22Offset%5C%22%3A0%2C%5C%22Size%5C%22%3A0%2C%5C%22SourceColumn%5C%22%3A%5C%22%5C%22%2C%5C%22SourceColumnNullMapping%5C%22%3Afalse%2C%5C%22SourceVersion%5C%22%3A512%7D%5D%7D%22%5D%2C%22I%22%3A0%7D I have added this to my web config:
<modules runAllManagedModulesForAllRequests="true"></modules> Looking through all the responses it seems that everything is working correctly but the page Im on is not being updated when a new entry has been added to the database.
On my local development system my project is set up using IIS it works flawlessly.
Could anyone point me in the right direction please.
EDIT: I have got it working on the server now. But it seems that it works right after it has been deployed for a few hours. Then after that it seems to stop working. So I have to assume that the signalr connection is being disposed at some stage and now getting reinstated?
Here is my RegisterServices class:
private static IContainer RegisterServices(ContainerBuilder builder) { builder.RegisterControllers(Assembly.GetExecutingAssembly()); builder.RegisterApiControllers(Assembly.GetExecutingAssembly()); builder.RegisterType<ContextEntities>() .As<DbContext>() .InstancePerRequest(); builder.RegisterType<DbFactory>() .As<IDbFactory>() .InstancePerRequest(); builder.RegisterType<UnitOfWork>() .As<IUnitOfWork>() .InstancePerRequest(); // Services builder.RegisterType<MembershipService>() .As<IMembershipService>() .InstancePerRequest(); builder.RegisterType<CacheService>() .As<ICacheService>() .InstancePerRequest(); builder.RegisterType<GameHub>().ExternallyOwned(); Container = builder.Build(); return Container; } Here is a page where signalr is used: http://halodatahive.com/Scrim/Live/2845
I seem to be losing reference to the signalr connection after a few hours after a deployment.
EDIT: If I recycle my APP POOL the page with signalR starts working again.
3 Answers
Answers 1
This is what I ended up using to resolve the issue. It seems that after around 1 hour it was getting disconnected some how. I put this code in a few hours ago and it still seems to be working. Thanks to @Noren for all their help in chat earlier!
EDIT: This did not seem to solve the problem unfortunately.
$.connection.hub.disconnected(function() { setTimeout(function() { $.connection.hub.start(); }, 5000); // Restart connection after 5 seconds. }); Answers 2
I've seen something like this before. In my case it was RabbitMQ events that were lost because IIS was spinning down the application.
Is your application is not being hit very frequently? IIS has a tendency to spin down applications that it doesn't think it needs in order to save resources. That might be why it only stops working after a few hours and you can recycle to bring it back up.
Answers 3
first add Hubs folder and
NotificationsHubs.csin root
in NotificationsHubs.cs
[HubName("NotificationsHubs")] public class NotificationsHubs : Hub { public static Thread NotificationsThread; public void Send(string token, string UserAgent, string IP) { var serverVars = Context.Request.GetHttpContext().Request.ServerVariables; string SignalRIp = serverVars["REMOTE_ADDR"]; string T = Context.Request.Headers["User-Agent"].ToLower(); if ((T == cryptClass.crypt.Decrypt(UserAgent)) && (SignalRIp == cryptClass.crypt.Decrypt(IP))) { var connection = SignalRConnections.Connections.SingleOrDefault(c => c.Token == Guid.Parse(token)); if (connection != null) { connection.Context = this.Context; } if (NotificationsThread == null || !NotificationsThread.IsAlive) { NotificationsThread = new Thread(new ThreadStart(NotificationsCheck)); NotificationsThread.Start(); } } NotificationsCheck is custom function
in NotificationController
public ActionResult Notifications() { NotificationsModule.messageBL = _messageBL; long UserID = GetCurrentUser(); Notification _Notification = new Notification(); _Notification.GetToken = SignalRConnections.GetToken(UserID); _Notification.UserAgent = cryptClass.crypt.Encrypt(Request.UserAgent.ToLower()); _Notification.IP = cryptClass.crypt.Encrypt(Request.UserHostAddress); return View(_Notification); } in Notifications.cshtml view
add this JS file
<script src="~/Scripts/jquery.signalR-2.2.1.js")"></script> <script src="~/signalr/hubs"></script> $(function () { // Reference the auto-generated proxy for the hub. var chat = $.connection.NotificationsHubs; // Create a function that the hub can call back to display messages. chat.client.addNewMessageToPage = function (Title, Body, Icon) { // Add the message to the page. notifyMe(Title, Body, Icon); }; $.connection.hub.start().done(function () { chat.server.send('@Model.GetToken', '@Model.UserAgent', '@Model.IP'); $('#sendmessage').click(function () { // Call the Send method on the hub. chat.server.send(); }); }); }); notifyMe(Title, Body, Icon); is jquery custom function
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