SocketAsyncEventArgs

介绍（大概都知道

） SocketAsyncEventArgs是.NET Framework 3.5出的

bool b= socket.AcceptAsync(e);
if (!b)
{
//注意这里要上锁
lock(e)
{
ProcessAccept(e);
}
}

Receive监听

<pre name="code" class="csharp">bool b= userToken.connect.ReceiveAsync(userToken.ReceiveEventArgs);
if (!b)
{
lock (userToken)  //这里也要加锁
{
ProcessReceive(userToken.ReceiveEventArgs);
}
}

<pre name="code" class="csharp">//判断网络消息接收是否成功
if (userToken.ReceiveEventArgs.BytesTransferred > 0 && userToken.ReceiveEventArgs.SocketError == SocketError.Success)
{
//...处理消息和再次开启消息监听
}

IO_Completed

<pre name="code" class="csharp">lock (userToken)
{
if (e.LastOperation == SocketAsyncOperation.Receive)
{
ProcessReceive(e);
}
else if (e.LastOperation == SocketAsyncOperation.Send)
{
ProcessSend(e);
}
}

Send

<pre name="code" class="csharp">sendSAEA.SetBuffer(buff, 0, buff.Length);
bool result = connect.SendAsync(sendSAEA);
if (!result)
{
sendProcess(sendSAEA);//这里只是个回调
}
//之前在插入数据的时候我也上锁了 否则会数据混乱 尴尬...

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