public void PrintState(SocketClientStateOptions state, bool isError)
{
string str = "[" + Thread.CurrentThread.ManagedThreadId.ToString("X2") + "] " + (isError ? "！" : " ") + this.State + ">" + state + "\tSN:" + this.SN + "\tCID:" + this.SocketClientIndex + "\tCloseCount:" + this.CloseCount + "\tAddress:" + this.Address + "\t" + this.GetCollectionName() + "\tLength:" + this.m_Args.BytesTransferred + "\tOperation:" + this.m_Args.LastOperation + "\tError:" + this.m_Args.SocketError;
if (this.m_Args.AcceptSocket != null)
{
str += "\tConnected:" + this.m_Args.AcceptSocket.Connected;
if (this.m_Args.AcceptSocket.RemoteEndPoint != null)
{
str += " IP:" + this.m_Args.AcceptSocket.RemoteEndPoint;
}
}
//System.Diagnostics.Debug.WriteLine(str);
}
private void Close()
{
this.CloseCount++;
if (this.CloseCount > 1)
{
this.m_Server.DoException(this.m_Args, new Exception("关闭了 " + this.CloseCount + " 次"));
}
this.m_Args.Completed -= new EventHandler <SocketAsyncEventArgs>(this.m_Server.SocketAsyncEventArgs_Completed);
this.Address = default(ADDRESS);
if (this.m_Args.AcceptSocket != null)
{
if (this.m_Args.AcceptSocket.Connected)
{
try
{
this.m_Args.AcceptSocket.Shutdown(SocketShutdown.Both);
}
catch (Exception)
{
}
}
this.m_Args.AcceptSocket.Close();
//Thread.Sleep(10); //（必须！）等待 AcceptSocket 释放，如果出现“现在已经正在使用此 SocketAsyncEventArgs 实例进行异步套接字操作”的错误，则还需增大延时。
this.m_Args.AcceptSocket = null;
}
if (this.m_Args.Buffer != null)
{
this.m_Args.SetBuffer(null, 0, 0);
}
this.State = SocketClientStateOptions.Free;
}
/// <summary>
/// 改变状态。
/// </summary>
/// <param name="state"></param>
public void ChangeState(SocketClientStateOptions state)
{
lock (this)
{
PrintState(state, false);
if (state != this.State)
{
switch (this.State)
{
case SocketClientStateOptions.Free:
if (state == SocketClientStateOptions.Connected)
{
if (this.m_Server.m_Connecteds.Contains(this.m_Args) == false)
{
this.m_Server.m_Connecteds.Add(this.m_Args);
this.State = state;
}
else
{
this.m_Server.DoException(this.m_Args, new Exception("状态从 " + this.State + " 变更为 " + state + " 时，连接队列中已存在当前异步套接字操作"));
}
}
else
{
if (this.CloseCount != 0)
{
PrintState(state, true);
}
}
break;
case SocketClientStateOptions.Connected:
SocketAsyncEventArgs argsOut;
if (this.m_Server.m_Connecteds.TryTake(out argsOut) == false)
{
this.m_Server.DoException(this.m_Args, new Exception("从异步套接字连接集合中移除连接时发生错误：未发现该套接字的连接信息。"));
}
if (state == SocketClientStateOptions.Online)
{
while (this.m_Server.m_Onlines.TryAdd(this.Address, this.m_Args) == false)
{
//如果加入登录后的集合中失败，则表示已有相同地址的连接已经登录
if (this.m_Server.m_Onlines.TryGetValue(this.Address, out argsOut))
{
SocketClient _SocketClientOut = argsOut.UserToken as SocketClient;
_SocketClientOut.ChangeState(SocketClientStateOptions.Free);
}
}
this.State = state;
}
else if (state == SocketClientStateOptions.Free)
{
this.Close();
}
break;
case SocketClientStateOptions.Online:
if (state == SocketClientStateOptions.Free)
{
SocketAsyncEventArgs argsDis;
if (this.m_Server.m_Onlines.TryRemove(this.Address, out argsDis) == false)
{
this.m_Server.DoException(this.m_Args, new Exception("从异步套接字在线集合中移除连接时发生错误：未发现该套接字的在线信息。(该异常通常为强制关闭连接后出现，不影响后续操作)"));
}
this.Close();
}
else
{
PrintState(state, true);
}
break;
}
}
else
{
PrintState(state, true);
}
}
}
