public void Bind()
{
cacheManager.BufferSize = BufferSize;
cacheManager.Capacity = TotalBufSize * MByte;
tokenPool.MaxLeftNum = TokenMaxLeftNum;
socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
socket.SendBufferSize = 64 * 1024;
socket.ReceiveBufferSize = 64 * 1024;
socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.SendTimeout, 1000);
if (string.IsNullOrEmpty(Host))
{
localEndPoint = new IPEndPoint(IPAddress.Any, Port);
}
else
{
localEndPoint = new IPEndPoint(IPAddress.Parse(Host), Port);
}
socket.Bind(localEndPoint);
receivebuffer = new byte[BufferSize];
receiveSocketArgs = new SocketAsyncEventArgs();
receiveSocketArgs.RemoteEndPoint = localEndPoint;
receiveSocketArgs.Completed += IO_Completed;
receiveSocketArgs.SetBuffer(receivebuffer, 0, receivebuffer.Length);
AsyncUdpUserToken token = new AsyncUdpUserToken();
token.Socket = socket;
token.IPAddress = localEndPoint.Address;
receiveState = new AsyncSocketUDPState();
receiveState.Data = receivebuffer;
receiveState.Remote = localEndPoint;
receiveState.IPAddress = localEndPoint.Address;
receiveState.Socket = socket;
}
private void Recieve(IAsyncResult ar)
{
AsyncSocketUDPState so = ar.AsyncState as AsyncSocketUDPState;
int len = -1;
try
{
len = socket.EndReceiveFrom(ar, ref so.Remote);
//
byte[] buf = null;
bool r = false;
int index = 0;
if (IsFixCache)
{
if (cacheManager.SetBuffer(out buf, out index))
{
r = true;
}
}
else
{
if (cacheManager.GetBuffer(out buf))
{
r = true;
}
}
//
if (!r)
{
buf = new byte[len];
}
//
Array.Copy(receiveState.Data, 0, buf, index, len);
if (EnableHeart)
{
//
AsyncUdpUserToken cur = null;
IPEndPoint remote = so.Remote as IPEndPoint;
string id = remote.ToString() + remote.Port;
if (dicToken.TryGetValue(id, out cur))
{
cur.DataTime = DateTime.Now;
}
else
{
cur = new AsyncUdpUserToken();
cur.IPAddress = localEndPoint.Address;
cur.Socket = socket;
cur.Remote = so.Remote;
dicToken[id] = cur;
}
bool rCpm = true;
if (len == HeartBytes.Length)
{
for (int i = 0; i < len; i++)
{
if (buf[i + index] != so.Data[i + so.OffSet])
{
rCpm = false;
break;
}
}
}
if (rCpm)
{
//是心跳包
Recvice();
return;
}
}
//不要进行耗时操作
DoEventRecvice(buf, so.Remote, index, len, r);
}
catch (Exception)
{
//TODO 处理异常
}
finally
{
Recvice();
}
}