private void ConnectToServerFinished(IAsyncResult ar)
{
var result = (AsyncResult)ar;
var connect = (Func <string, string>)result.AsyncDelegate;
string error = connect.EndInvoke(ar);
ConnectCompleted?.Invoke(error, result.AsyncState.ToString());
}
public void ConnectToServerAsync(string url)
{
if (url == "https://" + Utils.ValidServer)
{
ConnectCompleted?.Invoke(null, url);
ConnectedServer = url;
}
else
{
ConnectCompleted?.Invoke("Couldn't connect to server", url);
}
}
private void TryConnect(IAsyncResult ar)
{
try
{
Socket.EndConnect(ar);
ConnectCompleted?.Invoke(this, new TcpCompletedEventArgs(ar.AsyncState));
}
catch (Exception ex)
{
var eventArgs = new TcpCompletedEventArgs(ex);
eventArgs.Error = true;
ConnectCompleted?.Invoke(this, eventArgs);
}
}
private void EndConnect(IAsyncResult result)
{
SocketAsyncState state = (SocketAsyncState)result.AsyncState;
try
{
Socket.EndConnect(result);
}
catch (Exception ex)
{
//出现异常，连接失败。
state.Completed = true;
//判断是否为异步，异步则引发事件
if (state.IsAsync)
{
ConnectFailed?.Invoke(this, new SocketEventArgs(this, SocketAsyncOperation.Connect, ex.Message));
}
return;
}
//连接成功。
//创建Socket网络流
Stream = new NetworkStream(Socket);
if (IsUseAuthenticate)
{
NegotiateStream negotiate = new NegotiateStream(Stream);
negotiate.AuthenticateAsClient();
while (!negotiate.IsMutuallyAuthenticated)
{
Thread.Sleep(10);
}
}
//连接完成
state.Completed = true;
if (state.IsAsync)
{
ConnectCompleted?.Invoke(this, new SocketEventArgs(this, SocketAsyncOperation.Connect));
}
//开始接收数据
Handler.BeginReceive(Stream, EndReceive, state);
}
private void Socket__ConnectCompleted(object sender, TcpCompletedEventArgs e)
{
ConnectCompleted?.Invoke(sender, e);
}