Calling my azure bot service using websocket fails - rest

Question

I have an Azure bot service which runs perfectly when tested on webchat.
Now I tried to open a websocket and test the bot.
I first send a POST request (with all required headers) to https://directline.botframework.com/v3/directline/conversations
I get a response with
{
"conversationId": "7FY18sO6FCT9OVi0pW7WBY",
"token": "my_token_here",
"expires_in": 1800,
"streamUrl":
"wss://directline.botframework.com/v3/directline/conversations/7FY18sO6FCT9OVi0pW7WBY/stream?watermark=-&t=token_value_here",
"referenceGrammarId": "c1c290dd-f896-5857-b328-cdc10298e440"
}
Now I try to use the streamUrl to send/receive data using web socket.
I got an error: Undefined
I tried to test the streamUrl on different online websocket testing tool. I still got the undefined error.
How can I test whether there is a problem in the streamUrl?
How can I test the web socket?

Answer 1

Firstly, as Eric Dahlvang mentioned, it enables us to receive activities via WebSocket stream, but not send activities.
Besides, I do a test with the following steps and sample, the activities can be received as expected via WebSocket stream, you can refer to it.
Step1: make a request to start a conversation
Step2: start client app (a console application) to wait for receiving acitivities
class Program
{
private static string botId = "fehanbasicbot";
static void Main(string[] args)
{
var url = Console.ReadLine();
StartReceivingActivities(url).Wait();
Console.ReadLine();
}
private static async Task StartReceivingActivities(string url)
{
var webSocketClient = new WebSocket(url);
webSocketClient.OnMessage += WebSocketClient_OnMessage;
webSocketClient.Connect();
}
private static void WebSocketClient_OnMessage(object sender, MessageEventArgs e)
{
// Occasionally, the Direct Line service sends an empty message as a liveness ping. Ignore these messages.
if (string.IsNullOrWhiteSpace(e.Data))
{
return;
}
var activitySet = JsonConvert.DeserializeObject<ActivitySet>(e.Data);
var activities = from x in activitySet.Activities
where x.From.Id == botId
select x;
foreach (Activity activity in activities)
{
Console.WriteLine(activity.Text);
}
}
}
packages.config
<?xml version="1.0" encoding="utf-8"?>
<packages>
<package id="Microsoft.Bot.Connector.DirectLine" version="3.0.2" targetFramework="net461" />
<package id="Microsoft.Rest.ClientRuntime" version="2.3.2" targetFramework="net461" />
<package id="Newtonsoft.Json" version="6.0.8" targetFramework="net461" />
<package id="WebSocketSharp" version="1.0.3-rc11" targetFramework="net461" />
</packages>
Step3: make a request to send an activity to the bot
Step4: check the console app output, I can find the activities are received