public bool Start()
{
try
{
//if (clientSocket != null)
//{
// clientSocket.Close();
//}
clientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
clientSocket.Connect(LinkIp, LinkId);
LinkState = true;
ClientDispatcher.Debug($"连接成功 {Desc} {LinkType} {LinkIp} {LinkId}！");
//连接后开始从服务器读取网络消息
clientSocket.BeginReceive(ReadM, recvoffest, 65536 - recvoffest, SocketFlags.None, new System.AsyncCallback(ReceiveCallBack), ReadM);
return(true);
}
catch (SocketException)
{
clientSocket = null;
LinkState = false;
//网络连接异常
ClientDispatcher.Error($"连接失败 {Desc} {LinkType} {LinkIp} {LinkId}！");
return(false);
}
}
//向登录服务器发送数据
public void Send(NetBitStream bts)
{
if (clientSocket == null)
{
ClientDispatcher.Error("请先连接到服务器！");
return;
}
if (!clientSocket.Connected)
{
return;
}
//创建NetWorkStream
NetworkStream ns;
//加锁，避免在多线程下出问题
lock (clientSocket)
{
ns = new NetworkStream(clientSocket);
}
if (ns.CanWrite)
{
try
{
ns.BeginWrite(bts.BYTES, 0, bts.Length, new System.AsyncCallback(SendCallBack), ns);
}
catch
{
Disconnect(0);
}
}
}
private int DeCodePacket(ref byte[] buf, ref int recvOffest)
{
int decodeOffest = 0;
int datalen = 0;
int head = 0;
while (recvOffest - decodeOffest >= 6)
{
datalen = BitConverter.ToInt32(buf, decodeOffest);
head = BitConverter.ToUInt16(buf, decodeOffest + 4);
if (head < 0 || head > 65536)
{
ClientDispatcher.Error($"出现Socket head异常");
return(0);
}
//if (datalen < 0 || datalen > 65536)
//{
// ClientDispatcher.Error($"出现Socket datalen 异常");
// return 0;
//}
if (datalen > recvOffest - (decodeOffest + 4))
{
//continue recv packet
break;
}
decodeOffest += 4;
byte[] buffer = new byte[datalen];
Buffer.BlockCopy(buf, decodeOffest, buffer, 0, datalen);
decodeOffest += datalen;
ListReq.Enqueue(buffer);
//ClientDispatcher.OnReceiveData(buffer);
StopwatchProcess.Stop();
var UseMs = StopwatchProcess.ElapsedMilliseconds;
if (UseMs > maxMs)
{
maxMs = UseMs;
ClientDispatcher.Debug($"消息处理最大耗时：{maxMs}毫秒");
}
}
if (decodeOffest > 0 && decodeOffest < recvOffest)
{
Buffer.BlockCopy(buf, decodeOffest, buf, 0, recvOffest - decodeOffest);
}
recvOffest = recvOffest - decodeOffest;
return(1);
}
//接收网络消息回调函数
private void ReceiveCallBack(System.IAsyncResult ar)
{
int readCount = 0;
try
{
StopwatchProcess = Stopwatch.StartNew();
//读取消息长度
readCount = clientSocket.EndReceive(ar);//调用这个函数来结束本次接收并返回接收到的数据长度。
recvoffest += readCount;
if (recvoffest > 65536)
{
ClientDispatcher.Error($"出现Socket异常");
return;
}
if (readCount <= 0)
{
recvoffest = 0;
//disconnect();
return;
}
DeCodePacket(ref ReadM, ref recvoffest);
}
catch (Exception ex)//出现Socket异常就关闭连接
{
recvoffest = 0;
ClientDispatcher.Error($"出现Socket异常 {Desc} {LinkType} {LinkIp} {LinkId}！{ex.Message}");
// ClientDispatcher.Error($"ReceiveCallBack. PackLeng:{PackLeng} ProtocolId:{ProtocolId}{(EProtocolId)ProtocolId}");
Disconnect(0); //这个函数用来关闭客户端连接
return;
}
clientSocket.BeginReceive(ReadM, recvoffest, 65536 - recvoffest, SocketFlags.None, new System.AsyncCallback(ReceiveCallBack), ReadM);
}
//关闭登录连接
public void Disconnect(int timeout)
{
LinkState = false;
ClientDispatcher.Error($"连接断开 {Desc} {LinkType} {LinkIp} {LinkId}！");
try
{
if (clientSocket == null)
{
return;
}
if (clientSocket.Connected)
{
clientSocket.Shutdown(SocketShutdown.Receive);
clientSocket.Close(timeout);
}
else
{
clientSocket.Close();
}
}
catch
{
}
}