Testing TestHost.WebSocketClient with ClientWebSocket .net core

Question

I have build a WebSocket web application in .net core by following this and this or this tutorials. Now I am trying to write some integration tests on this by using Microsoft.AspNetCore.TestHost

The way I create the WebSocket

public static WebSocketClient StartWebSocketServer(string url)
{
    var baseAddress = $"http://{url}";
    var builder =
        WebHost.CreateDefaultBuilder(new string[]{})
            .UseEnvironment("Development")
            .ConfigureLogging((ctx, logging) => logging.AddConsole())
            .UseUrls(baseAddress)
            .UseStartup<SocketsTestStartup>();

    var server = new TestServer(builder);
    return server.CreateWebSocketClient();
}

And websocket client creation is done in the code below

ClientWebSocket testAppClient = new ClientWebSocket();
await
    testAppClient 
    .ConnectAsync(
        new Uri("ws://loclahost:52015/local"),
        CancellationToken.None);

local is the path name on the websocket server

Startup.cs

app.MapWebSocketManager(
    "/local",
    serviceProvider.GetService<LocalServiceSocketHandler>());

Anyway, the connection produce the following error

System.Net.WebSockets.WebSocketException : Unable to connect to the remote server

My question is how can I ask ClientWebSocket to connect to TestHost.WebSocketClient?

Answer 1

Using the TestServer the following works on my end and just in case it may help someone else, here's the code:

var builder = WebHost.CreateDefaultBuilder()
                .UseStartup<Startup>()
                .UseEnvironment("Development");

var server = new TestServer(builder);
var wsClient = server.CreateWebSocketClient();

var wsUri = new UriBuilder(server.BaseAddress) 
{
    Scheme = "ws"
}.Uri;

await wsClient.ConnectAsync(wsUri, CancellationToken.None);

But since the original question is using the path /local one would just need to specify the Path property:

var wsUri = new UriBuilder(server.BaseAddress) 
{
    Scheme = "ws",

    Path = "local"
}.Uri;