// 连接到指定节点
void HandleConnected(IAsyncResult ar)
{
if (!running)
{
return;
}
AsyncConnectArgs args = ar.AsyncState as AsyncConnectArgs;
Socket client = args.c;
try
{
client.EndConnect(ar);
NetConnection nc = new NetConnection(client);
lock (connections)
connections.Add(nc);
nc.OnDisconnected += HandleDisconnected;
args.nc = nc;
args.reason = null;
}
catch (Exception ex)
{
args.nc = null;
args.reason = ex.Message;
}
args.done = true;
}
// 异步连接到指定网络节点
public void Connect2Peer(string addr, int port, Action <NetConnection, string> callback, AddressFamily addrFamily = AddressFamily.InterNetwork)
{
running = true;
Socket client = new Socket(addrFamily, SocketType.Stream, ProtocolType.Tcp);
client.Blocking = true;
AsyncConnectArgs args = new AsyncConnectArgs();
args.c = client;
args.cb = callback;
lock (connecting)
connecting.Add(args);
IPAddress[] ips = Dns.GetHostAddresses(addr);
if (ips.Length == 0)
{
client.Close();
return;
}
client.BeginConnect(ips[0], port, HandleConnected, args);
}
