// callback, udp used for kcp handshake
public void OnUdpMessage(byte[] vBytes)
{
UdpMessage.KcpStruct msg = UdpMessage.clientUnpack(vBytes);
if (kcpState == KCP_STATE.SYN_SEND)
{
if (msg.oper == UdpMessage.S2C_SYN)
{
udpFd = msg.fd;
token = msg.token;
StartKcp(udpFd, token, recvCallback);
kcpState = KCP_STATE.ACK_SEND;
UdpSend(UdpMessage.c2sAck(udpFd, token));
}
}
else if (kcpState == KCP_STATE.ACK_SEND)
{
if (msg.oper == UdpMessage.S2C_ACK)
{
kcpState = KCP_STATE.UP;
if (connectCallback != null)
{
connectCallback((int)CONNECT_FLAG.NORMAL);
}
}
}
}
// expand update for handshake and ping-keep
public void KcpExpandUpdate()
{
if (kcpState == KCP_STATE.SYN_SEND || kcpState == KCP_STATE.ACK_SEND)
{
int waitTime = (int)(TimeHelper.GetMilliseconds() - startConnTime);
if (waitTime > connTimeout)
{
connectCallback((int)CONNECT_FLAG.TIMEOUT);
kcpState = KCP_STATE.DOWN;
Close();
}
else if (waitTime > connRetryTime)
{
connRetryTime = connRetryTime * 2;
if (kcpState == KCP_STATE.SYN_SEND)
{
UdpSend(UdpMessage.c2sSyn());
}
else if (kcpState == KCP_STATE.ACK_SEND)
{
UdpSend(UdpMessage.c2sAck(udpFd, token));
}
}
}
else if (kcpState == KCP_STATE.UP)
{
uint curTime = TimeHelper.GetMilliseconds();
if (curTime - lastPingTime > pingInterval)
{
lastPingTime = curTime;
}
}
}
public void Close()
{
kcpState = KCP_STATE.DOWN;
lock (mSocketLock)
{
mState = ModuleState.CLOSE;
if (mUdpSocket != null)
{
mUdpSocket.Close();
}
}
}
public void Connect(int vTimeout, Action <int> nConnectCallback)
{
connectCallback = nConnectCallback;
if (kcpState == KCP_STATE.UP)
{
//这里有些问题，lua中没有赋值，这里赋值一个没有的值
connectCallback(-2);
}
else
{
StartUdpSocket();
UdpSend(UdpMessage.c2sSyn());
kcpState = KCP_STATE.SYN_SEND;
//timeout timer set
startConnTime = TimeHelper.GetMilliseconds();
connTimeout = vTimeout;
connRetryTime = 50;
}
}