2

hi i'm new in android developing and i want to write an application which use signalR java-client. in first step i did the answer of this and here is my client code:

Platform.loadPlatformComponent(new AndroidPlatformComponent());
String host = "localhost";
HubConnection connection = new HubConnection( host);
HubProxy hub = connection.createHubProxy("HubConnectionAPI");

SignalRFuture<Void> awaitConnection = connection.start(new LongPollingTransport(connection.getLogger()));
try {
    awaitConnection.get();
} catch (InterruptedException e) {
    e.printStackTrace();
} catch (ExecutionException e) {
    e.printStackTrace();
}

hub.subscribe(this);
try {
    hub.invoke("DisplayMessageAll", "message from android client").get();
    System.out.println("sent!!!");
} catch (InterruptedException e) {
    e.printStackTrace();
} catch (ExecutionException e) {
    e.printStackTrace();
}

and u can download the server code from here

i have following error with awaitConnection.get();

error:

W/System.err: java.util.concurrent.ExecutionException: microsoft.aspnet.signalr.client.transport.NegotiationException: There was a problem in the negotiation with the server

i also have this error:

Caused by: microsoft.aspnet.signalr.client.http.InvalidHttpStatusCodeException:Invalid status code: 404

can anyone please help me? i searched a lot but i didn't found anything helpful for me

EDIT:

clients can access the hub via this but how can i implement on android so my application can connect?

this is the log file on server:

2015-11-11 09:05:08 10.2.0.18 GET /signalr/negotiate clientProtocol=1.3&connectionData=%5B%7B%22name%22%3A%22hubconnectionapi%22%7D%5D 80 - 10.2.0.253 SignalR+(lang=Java;+os=android;+version=2.0) - 404 0 2 3
Community
  • 1
  • 1
Sina
  • 275
  • 5
  • 15
  • 1
    You can read my answers at http://stackoverflow.com/questions/32505390/signalr-integration-in-android-studio/32516840#32516840 and http://stackoverflow.com/questions/32573823/how-to-use-signalr-in-android/32574829#32574829, hope this helps! – BNK Nov 11 '15 at 09:05
  • @BNK thanks for your reply. i used your signalR service class but still having same issue!! i'm getting 404 file or directory not found! i added the log in my server. can you help? – Sina Nov 11 '15 at 09:54
  • Make sure you can access the server url from android phone/emulator. Try using web browser in the phone. Don't forget setting INTERNET permission in AndroidManifest.xml file. – BNK Nov 11 '15 at 10:06
  • @BNK i found the problem. thanks to you and sorry for taking your time – Sina Nov 11 '15 at 10:24
  • You're welcome, happy coding :) – BNK Nov 11 '15 at 10:26

2 Answers2

2

changed the String host = "localhost";

to String host = "localhost/signalr";

Sina
  • 275
  • 5
  • 15
0

localhost didn't work for me, i had to deploy the asp.net web application on IIS, allow the port in Firewall inbound rules and put it in signalr config in android.. hope this helps someone... Cheers!

George Mhanna
  • 1
  • 1