C# (CSharp) Socks5ProxyClient.ConnectAsync示例

示例#1

文件： TcpConnector.cs 项目： githubassets/xeus

        public async ValueTask <ICap?> ConnectAsync(OmniAddress address, CancellationToken cancellationToken = default)
        {
            using (await _asyncLock.LockAsync())
            {
                this.ThrowIfDisposingRequested();

                var config = _tcpConnectOptions;
                if (config == null || !config.Enabled)
                {
                    return(null);
                }

                if (!TryGetEndpoint(address, out var ipAddress, out ushort port))
                {
                    return(null);
                }

                var disposableList = new List <IDisposable>();

                try
                {
#if !DEBUG
                    if (!IsGlobalIpAddress(ipAddress))
                    {
                        return(null);
                    }
#endif

                    if (config.ProxyOptions != null)
                    {
                        if (!TryGetEndpoint(config.ProxyOptions.Address, out var proxyAddress, out ushort proxyPort, true))
                        {
                            return(null);
                        }

                        if (config.ProxyOptions.Type == TcpProxyType.Socks5Proxy)
                        {
                            var socket = await ConnectAsync(new IPEndPoint(proxyAddress, proxyPort));

                            if (socket == null)
                            {
                                return(null);
                            }

                            disposableList.Add(socket);

                            var proxy = new Socks5ProxyClient(ipAddress.ToString(), port);
                            await proxy.ConnectAsync(socket, cancellationToken);

                            var cap = new SocketCap(socket);
                            disposableList.Add(cap);

                            return(cap);
                        }
                        else if (config.ProxyOptions.Type == TcpProxyType.HttpProxy)
                        {
                            var socket = await ConnectAsync(new IPEndPoint(proxyAddress, proxyPort));

                            if (socket == null)
                            {
                                return(null);
                            }

                            disposableList.Add(socket);

                            var proxy = new HttpProxyClient(ipAddress.ToString(), port);
                            await proxy.ConnectAsync(socket, cancellationToken);

                            var cap = new SocketCap(socket);
                            disposableList.Add(cap);

                            return(cap);
                        }
                    }
                    else
                    {
                        var socket = await ConnectAsync(new IPEndPoint(ipAddress, port));

                        if (socket == null)
                        {
                            return(null);
                        }

                        disposableList.Add(socket);

                        var cap = new SocketCap(socket);
                        disposableList.Add(cap);

                        return(cap);
                    }
                }
                catch (Exception e)
                {
                    _logger.Error(e);

                    foreach (var item in disposableList)
                    {
                        item.Dispose();
                    }
                }

                return(null);
            }
        }