/// <summary>
/// 发送数据包
/// </summary>
/// <param name="type"></param>
/// <param name="data"></param>
public void sendData(TransmitType type, byte[] data)
{
if (data == null || data.Length == 0)
{
return;
}
SendTimestamp++;
UDPFramePacket packet = new UDPFramePacket();
packet.type = (byte)type;
packet.Timestamp = SendTimestamp;
packet.Block = data;
send(packet.ToBytes());
return;
if (data.Length <= mtu)
{
packet.PacketCount = 1;
packet.Block = data;
send(packet.ToBytes());
Console.WriteLine(packet.type.ToString() + ":" + packet.ToBytes().Length.ToString());
}
else
{
int count = data.Length / mtu;
if (data.Length % mtu != 0)
{
count += 1;
}
int offSet = 0;
byte[] block = new byte[mtu];
for (int i = 0; i < count; i++)
{
packet.PacketCount = count;
packet.PacketIndex = i;
if (offSet + mtu > data.Length)
{
block = new byte[data.Length - offSet];//要发送的缓冲区
}
Buffer.BlockCopy(data, offSet, block, 0, block.Length);
packet.Block = block;
send(packet.ToBytes());
offSet += mtu;
Console.WriteLine(packet.type.ToString() + ":" + packet.ToBytes().Length.ToString());
}
}
}
/// <summary>
/// 设置远程主机信息
/// </summary>
/// <param name="remoteIP">远程主机（广域网）</param>
/// <param name="remoteLocalIP">远程主机（局域网）</param>
public void setRemoteIP(IPEndPoint remoteLocalIP, IPEndPoint remoteIP)
{
#region 网络打洞互联 时间计数器
int TimeCount = 0;
System.Timers.Timer timer1 = new System.Timers.Timer();
timer1.Interval = 500;
timer1.Enabled = true;
timer1.Elapsed += delegate(object sender, System.Timers.ElapsedEventArgs e)
{
TimeCount++;
if (toEP == null && TimeCount <= 20)//如果10秒后还未与对方建立联接
{
UDPFramePacket packet = new UDPFramePacket();
packet.type = (byte)TransmitType.Penetrate;//打洞数据包
packet.Block = new byte[1400];
if (sockUDP != null && sockUDP.Listened)
{
sockUDP.Send(remoteLocalIP, packet.ToBytes());//发送一次局域网正常打洞请求
}
UDPFramePacket packet1 = new UDPFramePacket();
packet1.type = (byte)TransmitType.Penetrate;//打洞数据包
packet1.Block = new byte[512];
if (sockUDP != null && sockUDP.Listened)
{
sockUDP.Send(remoteLocalIP, packet1.ToBytes());//发送一次局域网小包打洞请求
}
UDPFramePacket packet2 = new UDPFramePacket();
packet2.type = (byte)TransmitType.Penetrate;//打洞数据包
packet2.Block = new byte[1400];
if (sockUDP != null && sockUDP.Listened)
{
sockUDP.Send(remoteIP, packet2.ToBytes());//发送一次广域网打洞请求
}
UDPFramePacket packet3 = new UDPFramePacket();
packet3.type = (byte)TransmitType.Penetrate;//打洞数据包
packet3.Block = new byte[512];
if (sockUDP != null && sockUDP.Listened)
{
sockUDP.Send(remoteIP, packet3.ToBytes());//发送一次广域网小包打洞请求
}
}
else
{
//终止发送，并触发获得主机事件
timer1.Enabled = false;
timer1.Dispose();
timer1 = null;
if (toEP != null)//如果已与对方打洞成功并建立连接
{
if (TimeCount <= 10)
{
connectedType = ConnectedType.UDPLocal;//标明是局域网连接
Console.WriteLine("局域网打洞成功，MTU=" + mtu.ToString() + ",打洞次数：" + TimeCount.ToString());
}
else
{
connectedType = ConnectedType.UDPRemote;//标明是广域网连接
Console.WriteLine("广域网打洞成功，MTU=" + mtu.ToString() + "，打洞次数：" + TimeCount.ToString());
}
}
else//打洞超时，数据只能通过服务器中转
{
Console.WriteLine("局域网打洞不成功，打洞次数：：" + TimeCount.ToString());
mtu = 1400;
toEP = remoteIP;//将对方的广域网远程主机信息记录下来
}
OnTransmitConnected();//触发连接建立事件
}
};
#endregion
}
