bool DoIdle()
{
if (CommIdle == null)
{
return(false);
}
CommIdleEventArgs e = new CommIdleEventArgs();
this.CommIdle(this, e);
if (e.Cancel == true)
{
return(true);
}
return(false);
}
// 接收响应包
public int RecvTcpPackage(out byte[] baPackage,
out int nLen,
out string strError)
{
strError = "";
int nInLen;
int wRet = 0;
bool bInitialLen = false;
Debug.Assert(client != null, "client为空");
baPackage = new byte[4096];
nInLen = 0;
nLen = 4096; //COMM_BUFF_LEN;
long lIdleCount = 0;
while (nInLen < nLen)
{
if (client != null)
{
/*
* if (client.Client.Poll(-1, SelectMode.SelectError))
* {
* strError = "通讯中断0";
* goto ERROR1;
* }
*
*
* if (client.Client.Connected == false)
* {
* strError = "通讯中断0";
* goto ERROR1;
* }
* */
}
if (CommIdle != null &&
client != null &&
lIdleCount < 20)
{
int nCount = 0;
try
{
nCount = client.Available;
}
catch (SocketException ex)
{
if (ex.ErrorCode == 0)
{
strError = "通讯中断0";
goto ERROR1;
}
}
if (nCount == 0)
{
CommIdleEventArgs e = new CommIdleEventArgs();
this.CommIdle(this, e);
if (e.Cancel == true)
{
strError = e.ErrorInfo;
goto ERROR1;
}
System.Threading.Thread.Sleep(10);
lIdleCount++;
continue;
}
}
if (client == null)
{
strError = "通讯中断";
goto ERROR1;
}
try
{
wRet = client.GetStream().Read(baPackage,
nInLen,
baPackage.Length - nInLen);
lIdleCount = 0;
/*
* wRet = client.Client.Receive(baPackage,
* nInLen,
* SocketFlags.None);
* */
}
catch (SocketException ex)
{
if (ex.ErrorCode == 10035)
{
CommIdleEventArgs e = new CommIdleEventArgs();
this.CommIdle(this, e);
if (e.Cancel == true)
{
strError = e.ErrorInfo;
goto ERROR1;
}
System.Threading.Thread.Sleep(100);
continue;
}
strError = "recv出错: " + ex.Message;
goto ERROR1;
}
catch (Exception ex)
{
strError = "recv出错: " + ex.Message;
goto ERROR1;
}
if (wRet == 0)
{
strError = "Closed by remote peer";
goto ERROR1;
}
// 得到包的长度
if ((wRet >= 1 || nInLen >= 1) &&
bInitialLen == false)
{
long remainder = 0;
bool bRet = BerNode.IsCompleteBER(baPackage,
0,
nInLen + wRet,
out remainder);
if (bRet == true)
{
/*
* // 正式分配缓冲区尺寸
* byte[] temp = new byte[nLen];
* Array.Copy(baPackage, 0, temp, 0, nInLen + wRet);
* baPackage = temp;
*
* bInitialLen = true;
* */
nLen = nInLen + wRet;
break;
}
}
nInLen += wRet;
if (nInLen >= baPackage.Length &&
bInitialLen == false)
{
// 扩大缓冲区
byte[] temp = new byte[baPackage.Length + 4096];
Array.Copy(baPackage, 0, temp, 0, nInLen);
baPackage = temp;
nLen = baPackage.Length;
}
}
// 最后规整缓冲区尺寸，如果必要的话
if (baPackage.Length > nLen)
{
byte[] temp = new byte[nLen];
Array.Copy(baPackage, 0, temp, 0, nLen);
baPackage = temp;
}
return(0);
ERROR1:
this.CloseSocket();
baPackage = null;
return(-1);
}