62 lines
2.4 KiB
C#
62 lines
2.4 KiB
C#
using System;
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using System.Net;
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using System.Net.Sockets;
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using System.Threading;
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using System.Threading.Tasks;
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namespace Mistox.Client {
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public class UDPReceiver : IDisposable {
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MistoxClient _parent;
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public UDPReceiver( MistoxClient parent) {
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_parent = parent;
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Thread Client = new Thread(async() => { await ReceiveThread(); });
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Client.Start();
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}
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async Task ReceiveThread() {
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while( _parent.Alive ) {
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try {
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// Read the data out of the UDP packet with a buffer that has the maximum possible UDP packet size
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// As UDP reads the whole next packet then drops. Im guaranteed to receive 1 packet at a time
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UdpReceiveResult udpPacket = await _parent.ClientSocket.ReceiveAsync();
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// Compute the connectionKey
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UInt128 ConnectionKey = mUDPClient.GetConnectionKey(udpPacket.RemoteEndPoint.Address);
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// Try find the user
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mUDPClient client = null;
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bool clientExists = _parent.clientConnections.TryGetValue(ConnectionKey, out client);
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if (clientExists) {
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// Create the data readers
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ReadOnlyMemory<byte> dataMemory = udpPacket.Buffer.AsMemory();
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ReadOnlySpan<byte> dataPacket = dataMemory.Span;
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// Split apart the packet
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byte dataType = dataPacket[0];
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ushort DataLength = (ushort)((dataPacket[1] << 8) | dataPacket[2]);
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ReadOnlyMemory<byte> data = dataMemory.Slice(DataPacket.HeaderLength, DataLength);
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// Extract the object
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dynamic buildObj = DataPacket.Deserialize( dataType, DataLength, data );
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// Map the IPEndPoint to a user
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IPEndPoint endpoint = udpPacket.RemoteEndPoint;
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// Return the object
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_parent.InvokeOnReceived( buildObj, udpPacket.RemoteEndPoint );
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}
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} catch( Exception e ) {
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Console.WriteLine( "UDP Receive exception : " + e.Message );
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}
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}
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}
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public void Dispose() {
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_parent.Alive = false;
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}
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}
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} |