C#•2y ago

❔ Reading from ClientWebSocket with BinaryReader

I am building an app to work as a gateway between a consumer connecting to a .NET websocket server and then proxying that to a TCP backend server. This code currently works quite well for TCP clients and makes use of the BinaryReader / BinaryWriter to proxy between the WebSocket and the TCPClient classes.
I'm trying to replicate the same behavior between a ClientWebSocket and a Websocket but can't seem to find a solution to reading each "packet" the binary ClientWebSocket receives. Wireshark shows the data I would expect but calling ClientWebSocket.ReceiveAsync results in odd counts that do not match the packets.

2 Replies

PatOP•2y ago

An example of proxying this traffic with the TCP client:

NetworkStream stream = myBinaryReader.BaseStream;
do
{
    if (!stream.DataAvailable)
    {
        continue;
    }

    var bytesRead = await stream.ReadAsync(buffer, ct);
    await webSocket.SendAsync(new ArraySegment<byte>(buffer, 0, read), WebSocketMessageType.Binary, true, ct)
} while( --things are connected-- )

NetworkStream stream = myBinaryReader.BaseStream;
do
{
    if (!stream.DataAvailable)
    {
        continue;
    }

    var bytesRead = await stream.ReadAsync(buffer, ct);
    await webSocket.SendAsync(new ArraySegment<byte>(buffer, 0, read), WebSocketMessageType.Binary, true, ct)
} while( --things are connected-- )

As mentioned above, this works very well. Is it possible with ClientWebSocket to access a similar stream?

Accord•2y ago

Looks like nothing has happened here. I will mark this as stale and this post will be archived until there is new activity.

Gaming

Programming

❔ Reading from ClientWebSocket with BinaryReader