private string recvStream()
{
if (tcpClient == null)
{
if (Error != null)
{
Error(this, new XmppErrorEventArgs(XmppErrorType.ClientNotConnected, string.Empty, string.Empty));
}
return(string.Empty);
}
int iteration = 0;
StringBuilder buf = new StringBuilder();
while (true)
{
string internalBuf = tcpClient.ReadStream();
if (string.IsNullOrWhiteSpace(internalBuf))
{
break;
}
if (internalBuf.Contains("<stream:error"))
{
if (RecvStreamCallback != null)
{
RecvStreamCallback(this, new XmppEventArgs(buf.Append(internalBuf).ToString()));
}
if (Error != null)
{
string tag, message;
XmppError.Parse(XmppIQ.Parse(internalBuf), out tag, out message);
Error(this, new XmppErrorEventArgs(XmppErrorType.XmppStreamError, tag, message));
}
Disconnect();
break;
}
else if (internalBuf.Contains("</stream:stream>"))
{
if (RecvStreamCallback != null)
{
RecvStreamCallback(this, new XmppEventArgs(buf.Append(internalBuf).ToString()));
}
if (Error != null)
{
Error(this, new XmppErrorEventArgs(XmppErrorType.ConnectionClosedByServer, string.Empty, string.Empty));
}
Disconnect();
break;
}
buf.Append(internalBuf);
if (state == XmppEngineState.Open)
{
if (XmppStream.IsValid(buf.ToString()))
{
break;
}
}
else
{
break;
}
iteration++;
if (iteration > 100)
{
if (Error != null)
{
Error(this, new XmppErrorEventArgs(XmppErrorType.RecvTooManyInvalidStream, string.Empty, ""));
}
Disconnect();
return(string.Empty);
}
}
if (RecvStreamCallback != null)
{
RecvStreamCallback(this, new XmppEventArgs(buf.ToString()));
}
// flush string buffer
string stringBuffer = buf.ToString();
buf.EnsureCapacity(0);
// it's ok, return a valid stream
return(stringBuffer);
}
