117 lines
4.0 KiB
C#
117 lines
4.0 KiB
C#
using SharedClientServer;
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using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Net.Sockets;
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using System.Text;
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namespace Client
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{
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class Client : ObservableObject
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{
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private TcpClient tcpClient;
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private NetworkStream stream;
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private byte[] buffer = new byte[1024];
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private byte[] totalBuffer = new byte[1024];
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private int totalBufferReceived = 0;
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public int Port = 5555;
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public bool Connected = false;
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private string username;
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public Callback OnSuccessfullConnect;
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public Client(string username)
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{
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this.username = username;
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this.tcpClient = new TcpClient();
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Debug.WriteLine("Starting connect to server");
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tcpClient.BeginConnect("localhost", Port, new AsyncCallback(OnConnect), null);
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}
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private void OnConnect(IAsyncResult ar)
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{
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Debug.Write("finished connecting to server");
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this.tcpClient.EndConnect(ar);
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this.stream = tcpClient.GetStream();
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OnSuccessfullConnect?.Invoke();
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SendMessage(JSONConvert.ConstructUsernameMessage(username));
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this.stream.BeginRead(buffer, 0, buffer.Length, new AsyncCallback(OnReadComplete),null);
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}
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private void OnReadComplete(IAsyncResult ar)
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{
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int amountReceived = stream.EndRead(ar);
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if (totalBufferReceived + amountReceived > 1024)
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{
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throw new OutOfMemoryException("buffer too small");
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}
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Array.Copy(buffer, 0, totalBuffer, totalBufferReceived, amountReceived);
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totalBufferReceived += amountReceived;
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int expectedMessageLength = BitConverter.ToInt32(totalBuffer, 0);
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while (totalBufferReceived >= expectedMessageLength)
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{
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// we have received the complete packet
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byte[] message = new byte[expectedMessageLength];
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// put the message received into the message array
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Array.Copy(totalBuffer, 0, message, 0, expectedMessageLength);
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handleData(message);
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totalBufferReceived -= expectedMessageLength;
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expectedMessageLength = BitConverter.ToInt32(totalBuffer, 0);
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}
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stream.BeginRead(buffer, 0, buffer.Length, new AsyncCallback(OnReadComplete), null);
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}
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private void handleData(byte[] message)
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{
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byte id = message[0];
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byte[] payload = new byte[message.Length - 1];
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Array.Copy(message, 1, payload, 0, message.Length - 1);
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switch (id)
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{
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case JSONConvert.LOGIN:
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// json log in username data
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break;
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case JSONConvert.MESSAGE:
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// json message data
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(string, string) combo = JSONConvert.GetUsernameAndMessage(payload);
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string textUsername = combo.Item1;
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string textMsg = combo.Item2;
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//TODO display username and message in chat window
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break;
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case JSONConvert.LOBBY:
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// lobby data
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//TODO fill lobby with the data received
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break;
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case JSONConvert.CANVAS:
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// canvas data
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break;
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default:
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Debug.WriteLine("[CLIENT] Received weird identifier: " + id);
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break;
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}
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}
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public void SendMessage(byte[] message)
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{
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Debug.WriteLine("[CLIENT] sending message " + Encoding.ASCII.GetString(message));
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stream.BeginWrite(message, 0, message.Length, new AsyncCallback(OnWriteComplete), null);
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}
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private void OnWriteComplete(IAsyncResult ar)
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{
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Debug.WriteLine("[CLIENT] finished writing");
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stream.EndWrite(ar);
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}
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}
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}
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