private void SendAck(byte[] data)
{
//发送ACK报文
MyDataGram pro = MyDataGram.DecodeMessage(data);
MyDataGram ack = new MyDataGram();
ack.DstID = pro.SrcID;
ack.SrcID = pro.DstID;
ack.Text = "__ack__" + pro.Text;
ack.Type = MessageType.Text;
string tempIP = "";
var resp = CSCore_instance.Query("q" + pro.SrcID);
if (resp == "n")
{
MessageBox.Show("当前好友不在线!");
return;
}
else
{
tempIP = resp;
}
SendUDPData(MyDataGram.EncodeMessage(ack), tempIP, ttPort);//danger!
}
private void ReceiveListener()
{
while (listening)
{
Thread.Sleep(500);
byte[] msg = null;
if (inter.messages.Count > 0)
{
//have new tcp message!
msg = inter.messages.Dequeue();
}
if (msg != null && msg.Length > 0)
{
MyDataGram pro = MyDataGram.DecodeMessage(msg);
if (pro.Type != MessageType.Disable)
{
//DistributeMessage(pro);
Dispatcher.BeginInvoke(new Dis(DistributeMessage), pro);
}
}
}
}
private void AccecptUdp()
{
bool OnGoing = true;
while (OnGoing)
{
//todo:加功能,发送端的计时器
//收到udp
Thread.Sleep(50);
try
{
var buff = Udplistener.Receive(ref endpoint);
int flag = 0;
lock (inter)
{
MyDataGram pro = MyDataGram.DecodeMessage(buff);
if (pro.Text.Length > 7)
{
if (pro.Text.Substring(0, 7) == "__ack__")
{
for (int i = 0; i < UdpMessageList.Count; i++)
{
var tempudp = MyDataGram.DecodeMessage(UdpMessageList[i].data);
if (tempudp.SrcID == pro.DstID && tempudp.DstID == pro.SrcID)
{
if (tempudp.Text == pro.Text.Substring(7))
{
//成功收到了对应的ack
MessageBox.Show("收到了ACK报文.");
UdpMessageList.RemoveAt(i);
flag = 1;
}
}
}
}
}
if (pro.Type != MessageType.Disable)
{
if (pro.Text.Length < 7)
{
SendAck(buff);
}
else if (pro.Text.Substring(0, 7) != "__ack__")
{
SendAck(buff);
}
}
if (flag == 0)
{
inter.messages.Enqueue(buff);
}
}
}
catch
{
//do nothing
}
lock (inter)
{
OnGoing = inter.listening;
}
}
}