StreamSocket connection from HoloLens does not work properly - unity3d

Question

I'm working on a HoloLens app which works as a client in a client-server connection to a local server written in Java (you can assume the server is working properly).
HoloLens should open a StreamSocket and connect to the server, but for some reasons the code remains stuck in the process of connection.
The code is the following:
void Start ()
{
text = GameObject.Find("DEBUG_TEXT").GetComponent<Text>();
Invoke("Connect", 7f);
}
public void Connect()
{
#if !UNITY_EDITOR
Task.Run(async () => {
try
{
socket = new StreamSocket();
await socket.ConnectAsync(new HostName(ip), port); //STOP HERE
writer = new StreamWriter(socket.OutputStream.AsStreamForWrite());
reader = new StreamReader(socket.InputStream.AsStreamForRead());
await Send("Hi");
await Receive();
}
catch(Exception e)
{
text.text = e.Message;
}
});
#endif
}
Basically, the code stops at the ConnectionAsync and never goes on. On the server side, the server notifies me with "new client connected!", so i suppose HoloLens effectively connects, but something happens after.
Any idea of what could be wrong?

Answer 1

I ran into the same problem, and solved it with the method mentioned here.
In short, you should never do anything like Task.Wait() or Task.Result on the main thread.
In my situation, I used Task.Result and stuck right at the connect operation.
After removing it, the program works fine.
Here's the bad code:
private async Task<string> _SocketSend(string request)
{
using(StreamSocket streamSocket = new StreamSocket())
{
await streamSocket.ConnectAsync(new HostName(this.socketHost), this.port);
// other code
...
}
}
public string SocketSend(string request)
{
return _SocketSend(request).Result;
}