hondacrx
140 lines
3.8 KiB
C#
140 lines
3.8 KiB
C#
/*
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* Copyright (C) 2012-2020 CypherCore <http://github.com/CypherCore>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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using System;
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using System.Net;
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using System.Net.Security;
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using System.Net.Sockets;
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using System.Security.Authentication;
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using System.Security.Cryptography.X509Certificates;
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using System.Threading.Tasks;
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namespace Framework.Networking
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{
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public abstract class SSLSocket : ISocket, IDisposable
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{
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Socket _socket;
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internal SslStream _stream;
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IPEndPoint _remoteEndPoint;
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byte[] _receiveBuffer;
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protected SSLSocket(Socket socket)
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{
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_socket = socket;
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_remoteEndPoint = (IPEndPoint)_socket.RemoteEndPoint;
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_receiveBuffer = new byte[ushort.MaxValue];
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_stream = new SslStream(new NetworkStream(socket), false);
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}
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public virtual void Dispose()
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{
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_receiveBuffer = null;
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_stream.Dispose();
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}
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public abstract void Accept();
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public virtual bool Update()
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{
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return _socket.Connected;
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}
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public IPEndPoint GetRemoteIpEndPoint()
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{
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return _remoteEndPoint;
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}
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public async Task AsyncRead()
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{
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if (!IsOpen())
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return;
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try
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{
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var result = await _stream.ReadAsync(_receiveBuffer, 0, _receiveBuffer.Length);
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if (result == 0)
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{
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CloseSocket();
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return;
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}
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ReadHandler(_receiveBuffer, result);
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}
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catch (Exception ex)
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{
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Log.outException(ex);
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}
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}
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public async Task AsyncHandshake(X509Certificate2 certificate)
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{
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try
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{
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await _stream.AuthenticateAsServerAsync(certificate, false, SslProtocols.Tls12, false);
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}
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catch(Exception ex)
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{
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Log.outException(ex);
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CloseSocket();
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return;
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}
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await AsyncRead();
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}
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public abstract void ReadHandler(byte[] data, int receivedLength);
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public async Task AsyncWrite(byte[] data)
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{
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if (!IsOpen())
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return;
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try
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{
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await _stream.WriteAsync(data, 0, data.Length);
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}
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catch (Exception ex)
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{
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Log.outException(ex);
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}
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}
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public void CloseSocket()
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{
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try
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{
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_socket.Shutdown(SocketShutdown.Both);
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_socket.Close();
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}
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catch (Exception ex)
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{
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Log.outDebug(LogFilter.Network, $"WorldSocket.CloseSocket: {GetRemoteIpEndPoint()} errored when shutting down socket: {ex.Message}");
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}
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}
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public virtual void OnClose() { Dispose(); }
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public bool IsOpen() { return _socket.Connected; }
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public void SetNoDelay(bool enable)
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{
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_socket.SetSocketOption(SocketOptionLevel.Tcp, SocketOptionName.NoDelay, enable);
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}
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}
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}
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