58 lines
2.2 KiB
C#
58 lines
2.2 KiB
C#
using System;
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using System.Net.Sockets;
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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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private readonly MistoxClient _parent;
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public UDPReceiver( MistoxClient parent) {
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_parent = parent;
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// Start the receive thread
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Task.Run(ReceiveThread);
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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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// Try find the user
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mUDPClient client = null;
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bool clientExists = _parent.clientConnections.TryGetValue(udpPacket.RemoteEndPoint, 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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// Create the packet header
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DataPacketHeader Header = new DataPacketHeader {
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Type = (ushort)((dataPacket[0] << 8) | dataPacket[1]),
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DataLength = (ushort)((dataPacket[2] << 8) | dataPacket[3])
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};
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// Slice out the data part of the packet
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ReadOnlyMemory<byte> data = dataMemory.Slice(DataPacket.HeaderLength, Header.DataLength);
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// Extract the object
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dynamic buildObj = DataPacket.Deserialize( Header, data );
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// Return the object
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_parent.InvokeOnReceived( buildObj, client );
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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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} |