Not connecting WAMP-CRA

[kitkat14]

Hi

First of all excuse my noob-ness. I am not that good at C#.

I am trying to connect to an API but I am not getting it to work for days

var wampConnection = null;
var wampSession = null;
var wampUser = 'web';
var wampPassword = 'web';

function onChallenge(wampSession, method, extra) {
	if (method == 'wampcra') {
		return autobahn.auth_cra.sign(wampPassword, extra.challenge);
	}
};

function connectionOpen(session, details) {
	wampSession.call('f_all_miner_updates', ['0a7a6fade943f7b6b9e96b4d1516bfcc733b5158af18d1b43aeec7e45a238c02']).then(initialSessionUpdatesReceived);
};

function initialSessionUpdatesReceived(updates) {   
    //After handling the initial information, now subscribe to receive future updates.	    
    wampSession.subscribe('miner_updates_0a7a6fade943f7b6b9e96b4d1516bfcc733b5158af18d1b43aeec7e45a238c02', onMinerUpdate);
};

function onMinerUpdate(update) {
    //Handle live miner updates here.
};

wampConnection = new autobahn.Connection({
	url : 'wss://live.prohashing.com:443/ws',
	realm : 'mining',
	authmethods: ['wampcra'],
	authid: wampUser,
	onchallenge: onChallenge
});

wampConnection.onopen = connectionOpen;
wampConnection.open();

**I am trying to mimick the same into C#**

  class Program
  {
    static void Main(string[] args)
    {
        DefaultWampChannelFactory factory = new DefaultWampChannelFactory();
        IWampClientAuthenticator authenticator = new WampCraClientAuthenticator(authenticationId: "web", secret: "web");

        IWampChannel channel = factory.CreateJsonChannel("wss://live.prohashing.com:443/ws", "mining", authenticator);
        IWampRealmProxy realmProxy = channel.RealmProxy;

        channel.RealmProxy.Monitor.ConnectionEstablished +=
(sender, arg) =>
{
    Console.WriteLine("connected session with ID " + arg.SessionId);

    dynamic details = arg.WelcomeDetails.OriginalValue.Deserialize<dynamic>();

    Console.WriteLine("authenticated using method '{0}' and provider '{1}'", details.authmethod,
                      details.authprovider);

    Console.WriteLine("authenticated with authid '{0}' and authrole '{1}'", details.authid,
                      details.authrole);
};

        channel.RealmProxy.Monitor.ConnectionBroken += (sender, arg) =>
        {
            dynamic details = arg.Details.OriginalValue.Deserialize<dynamic>();
            Console.WriteLine("disconnected " + arg.Reason + " " + details.reason + details);
        };

        channel.Open().ConfigureAwait(false);

        Console.ReadLine();
    }
}

But I get a connection disconnected every time.. 

[darkl]

Your sample works fine on my computer.

[kitkat14]

I was behind a proxy...

these two parts:

function connectionOpen(session, details) {
	wampSession.call('f_all_miner_updates', ['0a7a6fade943f7b6b9e96b4d1516bfcc733b5158af18d1b43aeec7e45a238c02']).then(initialSessionUpdatesReceived);
};

function initialSessionUpdatesReceived(updates) {   
    //After handling the initial information, now subscribe to receive future updates.	    
    wampSession.subscribe('miner_updates_0a7a6fade943f7b6b9e96b4d1516bfcc733b5158af18d1b43aeec7e45a238c02', onMinerUpdate);
};

how would that be done ?

[darkl]

public interface IMinerUpdatesProxy
{
    [WampProcedure("f_all_miner_updates")]
    Task AllMinerUpdatesAsync(string id);
}

IMinerUpdatesProxy proxy = channel.RealmProxy.Services.GetCalleeProxy<IMinerUpdatesProxy>();

await proxy.AllMinerUpdatesAsync("0a7a6fade943f7b6b9e96b4d1516bfcc733b5158af18d1b43aeec7e45a238c02");

IWampSubject subject = channel.RealmProxy.Services.GetSubject(
    "miner_updates_0a7a6fade943f7b6b9e96b4d1516bfcc733b5158af18d1b43aeec7e45a238c02");

subject.Subscribe(x =>
{

});

[kitkat14]

@darkl Thanks 👍 it works I will try to import it in Xamarin but I have already seen you can't import WampSharp to the PCL. Known issue ?

[darkl]

WampSharp supports netstandard2.0 and therefore to my understanding should work on Xamarin.

Elad

[kitkat14]

@darkl I will try to change it to .net 2.0. Do I need to add the package to each project or is it enough to have it added to the shared project ?

[kitkat14]

@darkl I have added the Wampsharp.Default to the shared project that runs netstandard 2.0

I am getting the following error when trying to run it with a class file

/Users/admin/Projects/App/iOS/MTOUCH: Error MT2002: Failed to resolve "WampSharp.V2.Realm.WampSessionCreatedEventArgs" reference from "WampSharp, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null" (MT2002) (App.iOS)

[YohskDista]

Hi,

I tried to use WampSharp in Xarmarin.Forms application and it works fine. What I did is download the version 15.5, when you create a new Xamarin.Forms project you have a template with NetStandard instead of PCL.

It is much better when you start because with PCL library you must install the WampSharp.Default.Client in the Xamarin.Android/iOS project too if I remember right.

What you can do is to put this line in your iOS application BuildEvents :

xcopy /y "$(SolutionDir)Path\to\your\PCL\bin\folder\*.dll" "$(SolutionDir)Path\to\your\iOS\output\folder"

It will copy the dll present in your PCL application and put it into your iOS output folder

[kitkat14]

@yohsk10

I am now trying for 2 days to just get the project to build.
Do you have basic solution that is working ? I mean a .netshared 2.0 project with the packages added to the shared project and the Android or iOS project.

What ever I try I am getting other errors because of packages. I need to know exactly which package to add where...

• Shared
  WampSharp.Default

• iOS/Android
  WampSharp.Default
  WampSharp.Default.Client

I tried all kind of combinations and get different kind of errors. The last one I get now is this

Can't resolve the reference 'System.Void WampSharp.V2.Client.WampCraClientAuthenticator::.ctor(System.String,System.String,System.String,System.Nullable1<System.Int32>,System.Nullable1<System.Int32>)', referenced from the method 'System.Void App.Page/d__9::MoveNext()' in 'WampSharp, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'. (MT2101) (Prohashing.iOS)

These are the only lines that I have in the project that create enough problems (it doesnt even complete the build)

		```
DefaultWampChannelFactory factory = new DefaultWampChannelFactory();
 IWampClientAuthenticator authenticator = new WampCraClientAuthenticator(authenticationId: "web", secret: "web");
 IWampChannel channel = factory.CreateJsonChannel("wss://live.prohashing.com:443/ws", "mining", authenticator);
 IWampRealmProxy realmProxy = channel.RealmProxy;

[YohskDista]

The only project who has the libraries is my shared project in netstandard 2.0. I have not installed anything in the other projects (iOS and Android).

I have this project who works great. You must change the IP address in the XamarinWamp.ViewModel.MainViewModel file (be carefull, do not use the localhost address)

TestXamarinWamp.zip

Here you have the project who published the data :

PublisherWamp.zip

Best regards
Yohsk

[kitkat14]

@yohsk10

I am trying for days I cant get it to work when I try to add the authenticator. Also I need to add the projects to the sub projects in order to work or else it doesnt want to build (because it doesnt have the reference)

Even then I am getting the following issue only if i remove the authenticator it will build. I think I will give up

Error MT2101: Can't resolve the reference 'System.Void WampSharp.V2.Client.WampCraClientAuthenticator::.ctor(System.String,System.String,System.String,System.Nullable1<System.Int32>,System.Nullable1<System.Int32>)', referenced from the method 'System.Void App.Page::refreshMinersAsync()' in 'WampSharp, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'. (MT2101) (App.iOS)

[darkl]

I have an idea what can cause the issue. There exists a folder named Xamarin.iOS10 in WampSharp.nuspec which contains PCL dlls. These dlls don't have WampCra as it is not present in PCL.
Perhaps the existence of Xamarin.iOS10 folder makes the IDE ignore the netstandard2.0 folder? Can you check if the referenced dlls are from the Xamarin.iOS10 folder?

Elad