public void OnRecievedData(IAsyncResult ar)
{
Socket sock = (Socket)ar.AsyncState;
try
{
int nBytesRead = 0;
int nBytesRec = sock.EndReceive(ar);
if (nBytesRec > 0)
{
do
{
// build the flap header
flap_header fh = new flap_header();
fh.asterisk = (char)m_byBuff[nBytesRead + 0];
fh.frametype = (byte)m_byBuff[nBytesRead + 1];
byte [] byteTemp = new byte[2];
byteTemp[1] = m_byBuff[nBytesRead + 2];
byteTemp[0] = m_byBuff[nBytesRead + 3];
fh.seqno = BitConverter.ToInt16(byteTemp, 0);
byteTemp[1] = m_byBuff[nBytesRead + 4];
byteTemp[0] = m_byBuff[nBytesRead + 5];
fh.datalen = BitConverter.ToInt16(byteTemp, 0);
#region do-while-loop
// we're talking to the authentication server
if (!m_bAuthenticated)
{
if (fh.frametype == 4)
{
byteTemp = new byte[fh.datalen];
Array.Copy(m_byBuff, nBytesRead + 6, byteTemp, 0, fh.datalen);
Hashtable loginInfo = GetTLVHash(byteTemp, fh.datalen);
// authentication error
if (loginInfo["8"] != null)
{
TLV tlv = (TLV)loginInfo[8];
if (OnError != null)
{
OnError("Error Code (" + Encoding.ASCII.GetString(tlv.byteData, 0, 2) + ")");
}
m_socket.Shutdown(SocketShutdown.Both);
m_socket.Close();
m_bTCPConnected = false;
}
// success!
else if (loginInfo["6"] != null)
{
// set the BOS info
TLV tlv = (TLV)loginInfo["5"];
string strTemp = Encoding.ASCII.GetString(tlv.byteData, 0, tlv.length);
string [] strData = Regex.Split(strTemp, "(:)");
m_strBOSServer = strData[0];
m_strBOSPort = strData[2];
// set the auth cookie
TLV cookie = (TLV)loginInfo["6"];
m_authCookie = new byte[cookie.length];
Array.Copy(cookie.byteData, 0, m_authCookie, 0, cookie.length);
// shut down and connect to BOS
m_bAuthenticated = true;
m_bTCPConnected = false;
m_socket.Shutdown(SocketShutdown.Both);
m_socket.Close();
Connect();
}
}
}
else
{
// SNAC data is always on flap channel 2
if (fh.frametype == 2)
{
byte [] rawData = new byte[fh.datalen];
Array.Copy(m_byBuff, nBytesRead + 6, rawData, 0, fh.datalen);
// build the snac
SNAC snac = new SNAC();
snac.family = IPAddress.NetworkToHostOrder(BitConverter.ToInt16(rawData, 0));
snac.subtype = IPAddress.NetworkToHostOrder(BitConverter.ToInt16(rawData, 2));
snac.flags = IPAddress.NetworkToHostOrder(BitConverter.ToInt16(rawData, 4));
snac.requestid = IPAddress.NetworkToHostOrder(BitConverter.ToInt32(rawData, 6));
// get the snac data
byte [] snacData = new byte[fh.datalen - 10];
Array.Copy(rawData, 10, snacData, 0, fh.datalen - 10);
// send it on its way
DispatchSNACData(snac, snacData);
}
}
#endregion
nBytesRead += fh.datalen + FLAP_HEADER_LENGTH;
} while (nBytesRead < nBytesRec);
SetupRecieveCallback(sock);
}
else if (!m_bDCOnPurpose)
{
HandleReconnect(); // looks like we disconnect, so reconnect
}
}
catch (Exception ex)
{
// looks like the connection dropped
if (!m_bDCOnPurpose)
{
HandleReconnect();
}
}
}