aspnet / signalr-samples

Samples for ASP.NET Core SignalR

This repo exists as an archived reference only. We are no longer taking changes or updating the code in this repo.

signalr-samples's Issues

Can not run signalR client below android 26

Exception Details
java.lang.ClassNotFoundException: Didn't find class "java.time.Duration" on path: DexPathList[[zip file "/data/app/com.microsoft.aspnet.signalr.samples.androidjavaclient-1/base.apk", zip file "/data/app/com.microsoft.aspnet.signalr.samples.androidjavaclient-1/split_lib_dependencies_apk.apk", zip file "/data/app/com.microsoft.aspnet.signalr.samples.androidjavaclient-1/split_lib_slice_0_apk.apk", zip file "/data/app/com.microsoft.aspnet.signalr.samples.androidjavaclient-1/split_lib_slice_1_apk.apk", zip file "/data/app/com.microsoft.aspnet.signalr.samples.androidjavaclient-1/split_lib_slice_2_apk.apk", zip file "/data/app/com.microsoft.aspnet.signalr.samples.androidjavaclient-1/split_lib_slice_3_apk.apk", zip file "/data/app/com.microsoft.aspnet.signalr.samples.androidjavaclient-1/split_lib_slice_4_apk.apk", zip file "/data/app/com.microsoft.aspnet.signalr.samples.androidjavaclient-1/split_lib_slice_5_apk.apk", zip file "/data/app/com.microsoft.aspnet.signalr.samples.androidjavaclient-1/split_lib_slice_6_apk.apk", zip file "/data/app/com.microsoft.aspnet.signalr.samples.androidjavaclient-1/split_lib_slice_7_apk.apk", zip file "/data/app/com.microsoft.aspnet.signalr.samples.androidjavaclient-1/split_lib_slice_8_apk.apk", zip file "/data/app/com.microsoft.aspnet.signalr.samples.androidjavaclient-1/split_lib_slice_9_apk.apk"],nativeLibraryDirectories=[/data/app/com.microsoft.aspnet.signalr.samples.androidjavaclient-1/lib/arm, /vendor/lib, /system/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
at com.microsoft.signalr.HubConnection.(HubConnection.java:50) 
at com.microsoft.signalr.HttpHubConnectionBuilder.build(HttpHubConnectionBuilder.java:64) 
at com.microsoft.aspnet.signalr.samples.androidjavaclient.MainActivity.onCreate(MainActivity.java:27) 
at android.app.Activity.performCreate(Activity.java:6876) 
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1135) 
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3206) 
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3349) 
at android.app.ActivityThread.access$1100(ActivityThread.java:221) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794) 
at android.os.Handler.dispatchMessage(Handler.java:102) 
at android.os.Looper.loop(Looper.java:158) 
at android.app.ActivityThread.main(ActivityThread.java:7224) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120) 
Suppressed: java.io.IOException: No original dex files found for dex location /data/app/com.microsoft.aspnet.signalr.samples.androidjavaclient-1/split_lib_slice_5_apk.apk
at dalvik.system.DexFile.openDexFileNative(Native Method)
at dalvik.system.DexFile.openDexFile(DexFile.java:295)
at dalvik.system.DexFile.(DexFile.java:80)
at dalvik.system.DexFile.(DexFile.java:59)
at dalvik.system.DexPathList.loadDexFile(DexPathList.java:279)
at dalvik.system.DexPathList.makePathElements(DexPathList.java:248)
at dalvik.system.DexPathList.(DexPathList.java:120)
at dalvik.system.BaseDexClassLoader.(BaseDexClassLoader.java:48)
at dalvik.system.PathClassLoader.(PathClassLoader.java:65)
at android.app.ApplicationLoaders.getClassLoader(ApplicationLoaders.java:84)
at android.app.ApplicationLoaders.getClassLoader(ApplicationLoaders.java:45)
at android.app.LoadedApk.getClassLoader(LoadedApk.java:434)
at android.app.LoadedApk.makeApplication(LoadedApk.java:659)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:6289)

On Android api below 26 we are unable to run signalr client

Could you update to preview2?

ChatSample works, but if I update Microsoft.AspNetCore.All from preview1 to preview2, it doesn't work. So, could you provide an example using preview2?

Could not load assembly 'System.Memory, Version=4.0.1.0

1>C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\MSBuild\Xamarin\Android\Xamarin.Android.Common.targets(1590,2): error : Exception while loading assemblies: System.IO.FileNotFoundException: Could not load assembly 'System.Memory, Version=4.0.1.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51'. Perhaps it doesn't exist in the Mono for Android profile?
1>C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\MSBuild\Xamarin\Android\Xamarin.Android.Common.targets(1590,2): error : File name: 'System.Memory.dll'
1>C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\MSBuild\Xamarin\Android\Xamarin.Android.Common.targets(1590,2): error : at Java.Interop.Tools.Cecil.DirectoryAssemblyResolver.Resolve(AssemblyNameReference reference, ReaderParameters parameters)
1>C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\MSBuild\Xamarin\Android\Xamarin.Android.Common.targets(1590,2): error : at Xamarin.Android.Tasks.ResolveAssemblies.AddAssemblyReferences(DirectoryAssemblyResolver resolver, ICollection`1 assemblies, AssemblyDefinition assembly, Boolean topLevel)
1>C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\MSBuild\Xamarin\Android\Xamarin.Android.Common.targets(1590,2): error : at Xamarin.Android.Tasks.ResolveAssemblies.Execute(DirectoryAssemblyResolver resolver)

Consider moving these signalr samples in the Samples repo under a aspnetcore/signalr folder

We now have a Samples repo. Moving these SignalR samples there might make them more discoverable.

Add shared worker example

The UWP sample will throw exception "The certificate authority is invalid or incorrect"

Hi, The UWP sample will throw exception "The certificate authority is invalid or incorrect".
Could you please update and fix this issue?

Error java.lang.NoClassDefFoundError: com.microsoft.aspnet.signalr.-$$Lambda$CallbackMap$V5Uq2tEgd64-ZwWFXygwi8ZeV4I

I am facing below error at hubConnection.on("ReceiveMessage",..):
java.lang.NoClassDefFoundError: com.microsoft.aspnet.signalr.-$$Lambda$CallbackMap$V5Uq2tEgd64-ZwWFXygwi8ZeV4I

dependency

implementation 'com.microsoft.aspnet:signalr:0.1.0-preview1-35029'

here throwing that error

hubConnection.on("ReceiveMessage", (message)-> {

        getActivity().runOnUiThread(new Runnable() {
            @Override
            public void run() {
                Log.d("MessageReceived",message);
                arrayAdapter.add(senderName + " : " +message);
                arrayAdapter.notifyDataSetChanged();
            }
        });
    }, String.class);

Find below error source

**10-07 23:24:39.425 18779-18779/com.cabieo.cabieoapp I/art: Rejecting re-init on previously-failed class java.lang.Class<com.microsoft.aspnet.signalr.-$$Lambda$CallbackMap$V5Uq2tEgd64-ZwWFXygwi8ZeV4I>
10-07 23:24:39.425 18779-18779/com.cabieo.cabieoapp D/AndroidRuntime: Shutting down VM

--------- beginning of crash

10-07 23:24:39.600 18779-18779/com.cabieo.cabieoapp E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.cabieo.cabieoapp, PID: 18779
java.lang.NoClassDefFoundError: com.microsoft.aspnet.signalr.-$$Lambda$CallbackMap$V5Uq2tEgd64-ZwWFXygwi8ZeV4I
at com.microsoft.aspnet.signalr.CallbackMap.put(CallbackMap.java:15)
at com.microsoft.aspnet.signalr.HubConnection.on(HubConnection.java:219)
at com.cabieo.cabieoapp.Fragments.ChatHomeFragment.onCreateView(ChatHomeFragment.java:70)
at android.support.v4.app.Fragment.performCreateView(Fragment.java:2354)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1419)
at android.support.v4.app.FragmentManagerImpl.moveFragmentToExpectedState(FragmentManager.java:1740)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1809)
at android.support.v4.app.BackStackRecord.executeOps(BackStackRecord.java:799)
at android.support.v4.app.FragmentManagerImpl.executeOps(FragmentManager.java:2580)
at android.support.v4.app.FragmentManagerImpl.executeOpsTogether(FragmentManager.java:2367)
at android.support.v4.app.FragmentManagerImpl.removeRedundantOperationsAndExecute(FragmentManager.java:2322)
at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:2229)
at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:700)
at android.os.Handler.handleCallback(Handler.java:742)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:157)
at android.app.ActivityThread.main(ActivityThread.java:5571)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:745)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:635)
10-07 23:24:39.607 5240-5310/? I/octvm_klo: klo lock**

Server side: OnDisconnectedAsync call occurs at different intervals when Wi-Fi is turned off.

Hello to all. Please help solve problem. I've issue with calling OnDisconnectedAsync method when IPad wi-fi turned off, calling may be happen fast but some times it takes a long time more 10 minutes, but some times never. I need a stable disconnect calling for example 30 seconds. I use signalR 1.1.0 with default KeepAliveInterval and ServerTimeout. How I can manage this?
I hope I don't have to do a manual check of the client to disconnect. It'll be terrible:(

Thx for help.

Transport Fallback for Chat Sample Not Working

Right now it seems like transport fallback isn't working. Ran into this when publishing an app to Antares with Websockets disabled.

Signalr group keeps awaiting if client closes app.

I have a signalr implementation of a server which allows users to connect to multiple groups. I am using the WPF .NET signalr client to connect and have noticed, very regularly, that if the client closes the application abruptly, with invoking disconnect, the server signalr group keeps waiting on rude send method. This can be replicated easily by creating a high throughout server using Groups and the call hangs on
await _hunContext.Clients.Group(groups).SendMsg(msg).
I will appreciate any help since I haven’t noticed any samples which utilizes groups.

OkHttp Dispatcher

06-11 08:55:03.470 14490-2778/com.tatweer.vehicledashboardapp.dev E/AndroidRuntime: FATAL EXCEPTION: OkHttp Dispatcher
Process: com.tatweer.vehicledashboardapp.dev, PID: 14490
java.lang.StackOverflowError: stack size 1038KB
at io.reactivex.internal.operators.single.SingleFlatMapCompletable$FlatMapCompletableObserver.onComplete(SingleFlatMapCompletable.java:102)
at io.reactivex.internal.operators.single.SingleFlatMapCompletable$FlatMapCompletableObserver.onComplete(SingleFlatMapCompletable.java:102)
at io.reactivex.internal.operators.single.SingleFlatMapCompletable$FlatMapCompletableObserver.onComplete(SingleFlatMapCompletable.java:102)
at io.reactivex.internal.operators.single.SingleFlatMapCompletable$FlatMapCompletableObserver.onComplete(SingleFlatMapCompletable.java:102)
at io.reactivex.internal.operators.single.SingleFlatMapCompletable$FlatMapCompletableObserver.onComplete(SingleFlatMapCompletable.java:102)
at io.reactivex.internal.operators.single.SingleFlatMapCompletable$FlatMapCompletableObserver.onComplete(SingleFlatMapCompletable.java:102)
at io.reactivex.internal.operators.single.SingleFlatMapCompletable$FlatMapCompletableObserver.onComplete(SingleFlatMapCompletable.java:102)
at io.reactivex.internal.operators.single.SingleFlatMapCompletable$FlatMapCompletableObserver.onComplete(SingleFlatMapCompletable.java:102)
at io.reactivex.internal.operators.single.SingleFlatMapCompletable$FlatMapCompletableObserver.onComplete(SingleFlatMapCompletable.java:102)
at io.reactivex.internal.operators.single.SingleFlatMapCompletable$FlatMapCompletableObserver.onComplete(SingleFlatMapCompletable.java:102)
at io.reactivex.internal.operators.single.SingleFlatMapCompletable$FlatMapCompletableObserver.onComplete(SingleFlatMapCompletable.java:102)
at io.reactivex.internal.operators.single.SingleFlatMapCompletable$FlatMapCompletableObserver.onComplete(SingleFlatMapCompletable.java:102)
at io.reactivex.internal.operators.single.SingleFlatMapCompletable$FlatMapCompletableObserver.onComplete(SingleFlatMapCompletable.java:102)
at io.reactivex.internal.operators.single.SingleFlatMapCompletable$FlatMapCompletableObserver.onComplete(SingleFlatMapCompletable.java:102)
at io.reactivex.internal.operators.single.SingleFlatMapCompletable$FlatMapCompletableObserver.onComplete(SingleFlatMapCompletable.java:102)
at io.reactivex.internal.operators.single.SingleFlatMapCompletable$FlatMapCompletableObserver.onComplete(SingleFlatMapCompletable.java:102)
at io.reactivex.internal.operators.single.SingleFlatMapCompletable$FlatMapCompletableObserver.onComplete(SingleFlatMapCompletable.java:102)
at io.reactivex.internal.operators.single.SingleFlatMapCompletable$FlatMapCompletableObserver.onComplete(SingleFlatMapCompletable.java:102)
at io.reactivex.internal.operators.single.SingleFlatMapCompletable$FlatMapCompletableObserver.onComplete(SingleFlatMapCompletable.java:102)
at io.reactivex.internal.operators.single.SingleFlatMapCompletable$FlatMapCompletableObserver.onComplete(SingleFlatMapCompletable.java:102)
at io.reactivex.internal.operators.single.SingleFlatMapCompletable$FlatMapCompletableObserver.onComplete(SingleFlatMapCompletable.java:102)
at io.reactivex.internal.operators.single.SingleFlatMapCompletable$FlatMapCompletableObserver.onComplete(SingleFlatMapCompletable.java:102)
at io.reactivex.internal.operators.single.SingleFlatMapCompletable$FlatMapCompletableObserver.onComplete(SingleFlatMapCompletable.java:102)
at io.reactivex.internal.operators.single.SingleFlatMapCompletable$FlatMapCompletableObserver.onComplete(SingleFlatMapCompletable.java:102)
at io.reactivex.internal.operators.single.SingleFlatMapCompletable$FlatMapCompletableObserver.onComplete(SingleFlatMapCompletable.java:102)
at io.reactivex.internal.operators.single.SingleFlatMapCompletable$FlatMapCompletableObserver.onComplete(SingleFlatMapCompletable.java:102)
at io.reactivex.internal.operators.single.SingleFlatMapCompletable$FlatMapCompletableObserver.onComplete(SingleFlatMapCompletable.java:102)
at io.reactivex.internal.operators.single.SingleFlatMapCompletable$FlatMapCompletableObserver.onComplete(Single

android 6
retrofitVersion = '2.3.0'
rxVersion = '2.1.1'
rxAndroidVersion = '2.0.2'
implementation "com.squareup.retrofit2:adapter-rxjava2:$rootProject.retrofitVersion"
implementation "com.squareup.retrofit2:retrofit:$rootProject.retrofitVersion"
implementation "io.reactivex.rxjava2:rxjava:$rootProject.rxVersion"
implementation "io.reactivex.rxjava2:rxandroid:$rootProject.rxAndroidVersion"
implementation "com.squareup.retrofit2:converter-gson:$rootProject.retrofitVersion"

Can i use bare EventSource() Sever Sent Event, to connect signalr hub ?

Can i use bare js EventSource() Sever Sent Event, to connect signalr hub ?

If not , how to use sse with signalr ?

Uncaught TypeError in ChatSample

Using Windows 7, latest Chrome, latest SDK; preview-2

Pulled it down via github, ran as is. However, "url" should be replaced with "/chat" in index.html.

(index):55 Uncaught TypeError: Cannot read property 'invoke' of undefined
at HTMLInputElement. ((index):55)

at line
connection.invoke('send', name, messageInput.value);

can't Run this sample

if for this samples,error is follow:
System.Net.WebSockets.WebSocketException: The 'Sec-WebSocket-Accept' header value 'TTADvdCKZ4RHl0ek4ZWlOMVlq0I=' is invalid.
if add .WithTransport(Microsoft.AspNetCore.Sockets.TransportType.LongPolling), then error is follow:
System.Net.Http.HttpRequestException: 500 (Internal Server Error)
if add .WithTransport(Microsoft.AspNetCore.Sockets.TransportType.ServerSentEvents), then error is follow:
System.Threading.Tasks.TaskCanceledException: A task was canceled.
if add .WithTransport(Microsoft.AspNetCore.Sockets.TransportType.ServerSentEvents), then error is follow:
if add WebSockets then error is follow:
System.Net.WebSockets.WebSocketException: The 'Sec-WebSocket-Accept' header value 'M4b91cosiaTsNqwMqG1/Pv7WICw=' is invalid.

Not working TickR sample

Unable to connect with SignalR with any available transports. Error 404 "No Connection with that ID"

Problem

I have a react website in which I am trying to connect to SignalR hub on my .net core server via ocelot gateway.

I am unable to connect to hub and get a 404 error "No Connection with that ID". I have only one server instance running and no load balancer is involved.

Even though the negotiate call is always successful.

WebSocket and Server Sent Events are not working at all and on Long Polling, 404 is returned.

Network call logs are:

I have added all possible routes for ocelot. I am out of ideas on what to do now.

I have observed that the connectionId returned in response to the negotiate call is not used to connect to hub and instead the connectionToken value is used as the value for "id" query string parameter.

Specifications

• Ocelot Version: 15.0.6
• @microsoft/signalr Version: 5.0.1
• .Net Core: 3.1
• Platform: Windows

Chat Samle not work!

        connection.start()
            .then(function (connection) {
                console.log(connection);

connection started, ok. but after that
here connection is undefined and of course all other not work

About network changes

https://github.com/aspnet/SignalR/blob/master/clients/java/signalr/src/main/java/com/microsoft/signalr/OkHttpWebSocketWrapper.java

line 98.

onClose.invoke(null, t.getMessage());Should be changed to onClose.accept(0, t.getMessage());

Otherwise a NullPointerException is reported when the network state changes.

not able to navigate to route

Hi All,
ChatSample is working fine on my machine but the only thing is when I am trying to refer full url i.e "http://localhost:64654/chat" then I am getting error. The error says "Connection ID required" so is it a bug or I am not doing something wrong.Help me out

ChatSample Enter to Send

Should be able to send messages with the enter key

SignalR .Net Core 3.1 unable to send object in SendAsync method from service class

Previously I was using .Net Core 2.2, I was able to send a json object from a service class using hub context and SendAsync method to a front end web client. Im having issues after I've upgraded my project framework to 3.1. If i call the SendAsync method using a json object, it will hit an error stating "{"The collection type 'Newtonsoft.Json.Linq.JObject' is not supported."}", if I send any other class object it will directly go to OnDisconnected.

Sample of the method i use

Using Json Object: await _hubContext.Clients.Group(groupName).SendAsync("NotificationResponse", jsonObject);

Using Class Object: await _hubContext.Clients.Group(groupName).SendAsync("NotificationResponse", notificationObject);

I've tried sending object directly from the hub, I was able to send a normal class object but not a json object. I did the testing on my project and also sample from this tutorial: https://docs.microsoft.com/en-us/aspnet/core/tutorials/signalr?view=aspnetcore-3.1&tabs=visual-studio

Authorisation

would please add bearer token authentication sample

Error 204 received

I received error:
WebSocket connection to 'ws://localhost:2052/chat?id=cac62362-90af-49e9-ad97-59eecaadfee8' failed: Error during WebSocket handshake: Unexpected response code: 204

Include Java Maven project?

There's currently an Android project with gradle that uses the Java client but I think we should also include a simple Java console application the uses Maven.

Signalr Java client for android not working

Can the client script (.js) in example files be extracted from .html markup for readability?

Hi,

That's hard to read, and the client SingalR code is a new thing. It could be benefit for both developers and people writing the sample code to move it outside of the html markup.
Just like in this sample which already uses external script:
https://github.com/aspnet/SignalR-samples/tree/master/StockTickR/StockTickRApp
Thanks!

Need to update Java client sample to use 1.0 Jar

The sample should be using the 1.0 Jar

implementation 'com.microsoft.signalr:signalr:1.0.0'

CSharpClient Not Working

I can run the StockTickRApp and connect the NodeClient and see stock prices written to the console. When I connect the CSharpClient it does not write anything to the console.

From debugging I suspect this section:

var state = await connection.InvokeAsync<string>("GetMarketState");
if (string.Equals(state, "Open"))

The call to GetMarketState returns "Closed" so the StartStreaming method is never called.

How does IHubContext know if users are online

I want to send SMS if the user is not online，is there a way to confirm that users are online through IHubContext?Or do I deal with it myself?

Please consider creating a web browser service worker SignalR client example.

Add note that default launchSettings.json does not use port 5000, must be manually edited

It would help newbies to tell them to edit the launchSettings.json file to set the port to 5000 to get this sample to run.

  "iisSettings": {
    "windowsAuthentication": false,
    "anonymousAuthentication": true,
    "iisExpress": {
      "applicationUrl": "http://localhost:5000/",
      "sslPort": 0
    }

Write a sample and showcase client cursor implementation

how get message in background when app is closed in android

hi
can anybody help me for get message in background when app is closed??????
i work with services but not work for me!

HubConnection not trigger registering methods in Android.

When I try to use your sample code and start hubConnection in AsynTask send method works but on method does not work.

public class ChatActivity extends BaseActivity {

public HubConnection hubConnection;

@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_chat);

    String bearerToken = localStorage.getString("KEY_AUTHORIZATION_TOKEN");

    hubConnection = HubConnectionBuilder.create("https://....")
            .withHeader("Authorization", bearerToken)
            .build();

    hubConnection.on("DeletedChat", chatModel -> {
        EventBus.getDefault().post(new DeletedChatEvent(chatModel));
    }, ChatModel.class);

    hubConnection.on("NewChat", chatModel -> {
        EventBus.getDefault().post(new NewChatEvent(chatModel));
    }, ChatModel.class);

    hubConnection.on("NewMessage", chatMessageModel -> {
        EventBus.getDefault().post(new NewMessageEvent(chatMessageModel));
    }, ChatMessageModel.class);

    hubConnection.on("ReadedMessages", chatMessageModels -> {
        EventBus.getDefault().post(new ReadedMessagesEvent(chatMessageModels));
    }, ChatMessageModel[].class);

    new HubConnectionTask().execute(hubConnection);
}

public void sendMessage(ChatModel chatModel){
    hubConnection.send("SendMessage", chatModel);
}

class HubConnectionTask extends AsyncTask<HubConnection, Void, Void> {

    @Override
    protected void onPreExecute() {
        super.onPreExecute();
    }

    @Override
    protected Void doInBackground(HubConnection... hubConnections) {
        HubConnection hubConnection = hubConnections[0];
        hubConnection.start().blockingAwait();
        return null;
    }
}

}

If I try to connect hubConnection in onCreate() without AsyncTask as below everything work fine but .blockingAwait() is blocking main thread and activity does not open for a while.

public class ChatActivity extends BaseActivity {

public HubConnection hubConnection;

@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_chat);

    String bearerToken = localStorage.getString("KEY_AUTHORIZATION_TOKEN");

    hubConnection = HubConnectionBuilder.create("https://...")
            .withHeader("Authorization", bearerToken)
            .build();

    hubConnection.on("DeletedChat", chatModel -> {
        EventBus.getDefault().post(new DeletedChatEvent(chatModel));
    }, ChatModel.class);

    hubConnection.on("NewChat", chatModel -> {
        EventBus.getDefault().post(new NewChatEvent(chatModel));
    }, ChatModel.class);

    hubConnection.on("NewMessage", chatMessageModel -> {
        EventBus.getDefault().post(new NewMessageEvent(chatMessageModel));
    }, ChatMessageModel.class);

    hubConnection.on("ReadedMessages", chatMessageModels -> {
        EventBus.getDefault().post(new ReadedMessagesEvent(chatMessageModels));
    }, ChatMessageModel[].class);

    hubConnection.start().blockingAwait();
}

public void sendMessage(ChatModel chatModel){
    hubConnection.send("SendMessage", chatModel);
}

}

If I trying to connection just with hubConnection.start(); , send methods work but on methods not working again.

public class ChatActivity extends BaseActivity {

public HubConnection hubConnection;

@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_chat);

    String bearerToken = localStorage.getString("KEY_AUTHORIZATION_TOKEN");

    hubConnection = HubConnectionBuilder.create("https://...")
            .withHeader("Authorization", bearerToken)
            .build();

    hubConnection.on("DeletedChat", chatModel -> {
        EventBus.getDefault().post(new DeletedChatEvent(chatModel));
    }, ChatModel.class);

    hubConnection.on("NewChat", chatModel -> {
        EventBus.getDefault().post(new NewChatEvent(chatModel));
    }, ChatModel.class);

    hubConnection.on("NewMessage", chatMessageModel -> {
        EventBus.getDefault().post(new NewMessageEvent(chatMessageModel));
    }, ChatMessageModel.class);

    hubConnection.on("ReadedMessages", chatMessageModels -> {
        EventBus.getDefault().post(new ReadedMessagesEvent(chatMessageModels));
    }, ChatMessageModel[].class);

    hubConnection.start();
}

public void sendMessage(ChatModel chatModel){
    hubConnection.send("SendMessage", chatModel);
}

}

How can we start activity and make the on methods work without locking the main thread?

how to set signalr cross domain in asp.net core 2.2

Please create an angular 6 client

unable to get this client to work.
https://github.com/foxjazz/WebAdmsClient/issues

Show .NET Core Server Example

I want to run a SignalR .NET Core server without an ASP.NET website backing it (like the self-host examples of the old SignalR).

It'd be nice to see an example here of how to do this?

Nodejs client does not work

I created a basic example based on the sample , however it does not work

const signalR = require("@aspnet/signalr");

XMLHttpRequest = require("xmlhttprequest").XMLHttpRequest;
WebSocket = require("websocket").w3cwebsocket;
 
let connection = new signalR.HubConnectionBuilder()
    .withUrl("http://localhost:61937/signalr/hubs")
    .build();
 
connection.on("send", data => {
    console.log(data);
});
 
connection.start()
    .then(() => connection.invoke("send", "Hello"));

error -

module.js:549
    throw err;
    ^

Error: Cannot find module 'tslib'
    at Function.Module._resolveFilename (module.js:547:15)
    at Function.Module._load (module.js:474:25)
    at Module.require (module.js:596:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (..../signarlclient/node_modules/@aspnet/signalr/dist/cjs/Errors.js:5:15)
    at Module._compile (module.js:652:30)
    at Object.Module._extensions..js (module.js:663:10)
    at Module.load (module.js:565:32)
    at tryModuleLoad (module.js:505:12)
    at Function.Module._load (module.js:497:3)

node environment

node -v
v10.8.0
npm -v
6.2.0

packages installed

  "dependencies": {
    "@aspnet/signalr": "^1.0.3",
    "@types/node": "^10.9.4",
    "eventsource": "^1.0.7",
    "websocket": "^1.0.26",
    "xmlhttprequest": "^1.8.0"
  }

In Chat sample how to access the transcript log

Hi, I am trying to persist the log from the chat, Is there a marker or cursor, how can we persist the chat log its and its sequnece in sql serve, can you update the sample

SignalR server side code sample for Xamrin sample

I am looking for SignalR server side code sample for the Xamrin sample below:
https://github.com/aspnet/SignalR-samples/tree/master/Xamarin

There were no compatible transports on the server.

How to fix the below error from hubConnection.start().blockingAwait();

Caused by: java.lang.RuntimeException: There were no compatible transports on the server.
at com.microsoft.signalr.HubConnection.lambda$startNegotiate$11(HubConnection.java:364)
at com.microsoft.signalr.-$$Lambda$HubConnection$GiLlPVdlbvryuPaYB9UmGffcsYc.apply(Unknown Source:8)
at io.reactivex.internal.operators.single.SingleFlatMap$SingleFlatMapCallback.onSuccess(SingleFlatMap.java:76)
at io.reactivex.internal.operators.single.SingleMap$MapSingleObserver.onSuccess(SingleMap.java:64)
at io.reactivex.subjects.SingleSubject.onSuccess(SingleSubject.java:141)
at com.microsoft.signalr.DefaultHttpClient$2.onResponse(DefaultHttpClient.java:124)
at okhttp3.RealCall$AsyncCall.execute(RealCall.java:153)

Default branch has been renamed to main

On Monday, 15 March (slightly delayed, sorry), we renamed the default branch in this repository to main. For more details, see our earlier announcement.

SignalR Core Sample with basic auth (JWT) inside

Hi All,

I created a quick and simple sample:
https://github.com/h5aaimtron/SignalRCoreWithAuth

In the event you want to add/copy/etc. it to the existing SignalR Core samples. I'm going to add an Angular 6+ client and commit this weekend. I'm certain that my sample is not perfect, but it generally functions.

-Scott

How to use ClientWebSocket to connect to SignalR Server

How to do it

Update All Samples to Preview 2

• Chat Sample
• MoveShape
• StocTickR
• WhiteBoard
• XamarinAndroidChatClient

Build ASP.NET Core 3.x SignalR with real-time database notification SqlDependency

Can someone share a project example of a MVC web application implementing real-time database notification with using ASP.NET Core 3.0 or 3.1, ADO.NET, SignalR 3.0 and SqlDependency ?
I am building a dashboard web application ASP.NET Core 3.1 that has a grid in which real-time data gets updated/inserted/deleted by multiple concurrent users. I found a few examples but they are for ASP.NET Core 2.x and not complete project examples. I don't know how I should be implementing the SignalR and SqlDependency pieces the "proper" way in my project.

Update Java Client Sample to use Preview3 Package

The Java client sample needs to be updated to use the preview 3 packages. Because of how we do network calls now it's not just as easy as updating the dependency.

how to create hubconnection with websocket for android client

WindowsFormsSample does not work with ChatSample

WindowsForms has a Chat so I assume it should connect to the Server created by ChatSample.
Now the method signatures are out of sync and WinClient cannot connect anywhere.

Error: NameResolutionFailure xamarin.forms signalr

i am getting this error