/// <summary>
/// 開始讀取Socket資料, Begin 代表非同步.
/// 用於 1. IsAutoRead被關閉, 每次讀取需自行執行;
/// 2. 若連線還在, 但讀取異常中姒, 可以再度開始;
/// </summary>
public void BeginRead()
{
var myea = new CtkNonStopTcpStateEventArgs();
var client = this.ActiveWorkClient as TcpClient;
myea.Sender = this;
myea.WorkTcpClient = client;
var trxBuffer = myea.TrxMessageBuffer;
var stream = client.GetStream();
stream.BeginRead(trxBuffer.Buffer, 0, trxBuffer.Buffer.Length, new AsyncCallback(EndReadCallback), myea);
}
/// <summary>
/// Clinet Connect End
/// </summary>
/// <param name="ar"></param>
void EndConnectCallback(IAsyncResult ar)
{
var myea = new CtkNonStopTcpStateEventArgs();
var trxBuffer = myea.TrxMessageBuffer;
try
{
//Lock使用在短碼保護, 例如: 保護一個變數的get/set
//Monitor使用在保護一段代碼
Monitor.Enter(this); //一定要等到進去
var state = (CtkTcpSocket)ar.AsyncState;
state.WorkSocket = state.ConnSocket; //作為Client時, Work = Conn
var client = state.WorkSocket;
client.EndConnect(ar);
myea.Sender = state;
myea.WorkSocket = client;
if (!ar.IsCompleted || client == null || !client.Connected)
{
throw new CtkException("Connection Fail");
}
//呼叫他人不應影響自己運作, catch起來
try { this.OnFirstConnect(myea); }
catch (Exception ex) { CtkLog.WarnNs(this, ex); }
if (this.IsAsynAutoReceive)
{
client.BeginReceive(trxBuffer.Buffer, 0, trxBuffer.Buffer.Length, SocketFlags.None, new AsyncCallback(EndReceiveCallback), myea);
}
}
//catch (SocketException ex) { }
catch (Exception ex)
{
//失敗就中斷連線, 清除
this.Disconnect();
myea.Message = ex.Message;
myea.Exception = ex;
this.OnFailConnect(myea);
CtkLog.WarnNs(this, ex);
}
finally
{
try { this.mreIsConnecting.Set(); /*同步型的, 結束就可以Set*/ }
catch (ObjectDisposedException) { }
Monitor.Exit(this);
}
}
void EndConnectCallback(IAsyncResult ar)
{
var myea = new CtkNonStopTcpStateEventArgs();
var trxBuffer = myea.TrxMessageBuffer;
try
{
//Lock使用在短碼保護, 例如: 保護一個變數的get/set
//Monitor使用在保護一段代碼
Monitor.Enter(this);//一定要等到進去
var state = (CtkTcpClient)ar.AsyncState;
var client = state.MyTcpClient;
client.EndConnect(ar);
myea.Sender = state;
myea.WorkTcpClient = client;
if (!ar.IsCompleted || client.Client == null || !client.Connected)
{
throw new CtkException("Connection Fail");
}
//呼叫他人不應影響自己運作, catch起來
try { this.OnFirstConnect(myea); }
catch (Exception ex) { CtkLog.WarnNs(this, ex); }
if (this.IsAsynAutoRead)
{
var stream = client.GetStream();
stream.BeginRead(trxBuffer.Buffer, 0, trxBuffer.Buffer.Length, new AsyncCallback(EndReadCallback), myea);
}
}
//catch (SocketException ex) { }
catch (Exception ex)
{
//失敗就中斷連線, 清除
this.Disconnect();
myea.Message = ex.Message;
myea.Exception = ex;
this.OnFailConnect(myea);
CtkLog.WarnNs(this, ex);
}
finally
{
this.mreIsConnecting.Set();
Monitor.Exit(this);
}
}
/// <summary>
/// 開始讀取Socket資料, Begin 代表非同步.
/// 用於 1. IsAsynAutoReceive, 每次讀取需自行執行;
/// 2. 若連線還在, 但讀取異常中止, 可以再度開始;
/// </summary>
public void BeginReceive()
{
var myea = new CtkNonStopTcpStateEventArgs();
//採用現正操作中的Socket進行接收
var client = this.ActiveWorkClient as Socket;
myea.Sender = this;
myea.WorkSocket = client;
var trxBuffer = myea.TrxMessageBuffer;
client.BeginReceive(trxBuffer.Buffer, 0, trxBuffer.Buffer.Length, SocketFlags.None, new AsyncCallback(EndReceiveCallback), myea);
//EndReceive 是由 BeginReceive 回呼的函式中去執行
//也就是收到後, 通知結束工作的函式
//你無法在其它地方呼叫, 因為你沒有 IAsyncResult 的物件
}
