119 lines
3.4 KiB
C#
119 lines
3.4 KiB
C#
#if !NETFX_CORE
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using System;
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using System.Net;
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using System.Net.Sockets;
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using System.Threading.Tasks;
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namespace Plane.Communication
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{
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/// <summary>
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/// 提供作为 TCP 客户端通信的能力。
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/// </summary>
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public class TcpConnection : TcpConnectionBase
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{
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private string _remoteHostname;
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const int tcpReceiveBufferSize = 20 * 1024; //40 * 1024,
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const int tcpReceiveTimeout = 1200;
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private int _remotePort;
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public TcpConnection(string remoteHostname, int remotePort = 5250)
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{
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_remoteHostname = remoteHostname;
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_remotePort = remotePort;
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_client = new TcpClient
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{
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ReceiveBufferSize = tcpReceiveBufferSize,
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ReceiveTimeout = tcpReceiveTimeout
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};
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}
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public void Open()
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{
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if (!IsOpen)
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{
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try
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{
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_client.Connect(_remoteHostname, _remotePort);
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}
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catch (SocketException)
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{
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CreateClientAndConnect();
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}
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catch (ObjectDisposedException)
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{
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CreateClientAndConnect();
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}
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_isBroken = false;
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}
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_stream = _client.GetStream();
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}
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public async Task<bool> BindIP(string ip)
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{
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bool bind = false;
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try
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{
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IPAddress IPLocal = IPAddress.Parse(ip);
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_client.Client.Bind(new IPEndPoint(IPLocal, 0));
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bind = true;
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}
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catch
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{
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bind = false;
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}
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await Task.Delay(10).ConfigureAwait(false);
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return bind;
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}
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public override async Task OpenAsync()
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{
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string logstr;
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if (!IsOpen)
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{
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try
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{
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await _client.ConnectAsync(_remoteHostname, _remotePort).ConfigureAwait(false);
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}
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//屏蔽掉异常处理
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//CreateClientAndConnectAsync会new一个TcpClient并且重新连接
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//之前设置的TcpClient中Socket Bind会无效，在多网卡工作时会导致断线重连的时间特别长
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catch (SocketException e)
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{
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logstr= e.Message;
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//await CreateClientAndConnectAsync();
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}
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catch (ObjectDisposedException)
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{
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//await CreateClientAndConnectAsync();
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}
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_isBroken = false;
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}
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_stream = _client.GetStream();
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}
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private void CreateClientAndConnect()
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{
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_client = new TcpClient(_remoteHostname, _remotePort)
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{
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ReceiveBufferSize = tcpReceiveBufferSize,
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ReceiveTimeout = tcpReceiveTimeout
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};
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}
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private async Task CreateClientAndConnectAsync()
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{
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_client = new TcpClient
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{
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ReceiveBufferSize = tcpReceiveBufferSize,// 40 * 1024,
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ReceiveTimeout = tcpReceiveTimeout// 1200
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};
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await _client.ConnectAsync(_remoteHostname, _remotePort).ConfigureAwait(false);
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}
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}
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}
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#endif
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