/// <summary>
/// 连接服务端
/// </summary>
/// <param name="info"></param>
/// <returns></returns>
public async static Task <IChannel> ConnectAsync(DotNettyClientInfo info)
{
IChannel channel;
try
{
if (!string.IsNullOrEmpty(info.LocalHost) && info.LocalPort != null)
{
channel = await bootstrap.ConnectAsync(new IPEndPoint(IPAddress.Parse(info.Host), info.Port), new IPEndPoint(IPAddress.Parse(info.LocalHost), info.LocalPort.Value));
}
else
{
channel = await bootstrap.ConnectAsync(new IPEndPoint(IPAddress.Parse(info.Host), info.Port));
}
}
catch (Exception ex)
{
if (ex.InnerException != null)
{
ex = ex.InnerException;
}
logger.LogError(ex, $"Channel connect failed. Host={info.Host}, Port={info.Port}, LocalHost={info.LocalHost}, LocalPort={info.LocalPort}");
clientInfoList.TryRemove(info.ChannelName, out info);
throw ex;
}
var localIPEndPoint = ((IPEndPoint)channel.LocalAddress);
info.LocalHost = localIPEndPoint.Address.ToIPString();
info.LocalPort = localIPEndPoint.Port;
info.Channel = channel;
var clientInfoAddResult = clientInfoList.TryAdd(info.ChannelName, info);
if (!clientInfoAddResult)
{
logger.LogError($"Channel is exist. Host={info.Host}, Port={info.Port}, LocalHost={info.LocalHost}, LocalPort={info.LocalPort}");
await channel.CloseAsync();
throw new InvalidOperationException("Channel is exist.");
}
return(channel);
}
private static Func <string, Task <LoginRequestData> > CreateGetLoginRequestDataHandler()
{
return(new Func <string, Task <LoginRequestData> >(async channelName =>
{
DotNettyClientInfo result = null;
for (var i = 0; i < 3 && !clientInfoList.TryGetValue(channelName, out result); i++)
{
await Task.Delay(100);
}
if (result != null)
{
return await result.GetLoginRequestDataHandler();
}
return new LoginRequestData();
}));
}
/// <summary>
/// 执行与服务端连接
/// </summary>
/// <returns></returns>
private async Task DoConnectAsync()
{
if (Status == ClientStatus.Connected)
{
return;
}
if (Status == ClientStatus.Connecting)
{
logger.LogError($"Client connect has begun. Host={Host}, Port={Port}, LocalHost={LocalHost}, LocalPort={LocalPort}");
throw new InvalidOperationException($"Client connect has begun. Host={Host}, Port={Port}, LocalHost={LocalHost}, LocalPort={LocalPort}");
}
Status = ClientStatus.Connecting;
logger.LogDebug($"Client connect beginning. Host={Host}, Port={Port}, LocalHost={LocalHost}, LocalPort={LocalPort}");
try
{
var dotNettyClientInfo = new DotNettyClientInfo()
{
Host = Host,
Port = Port,
LocalHost = LocalHost,
LocalPort = LocalPort,
RequestManager = requestManager,
InactiveHandler = InactiveHandler,
GetLoginRequestDataHandler = GetLoginRequestData,
LoginResponseHandler = LoginResponse
};
//发起异步连接操作
var oldChannel = channel;
channel = await BootstrapManager.ConnectAsync(dotNettyClientInfo);
if (oldChannel != null)
{
await oldChannel.CloseAsync();
}
channelName = dotNettyClientInfo.ChannelName;
}
catch (Exception ex)
{
Status = ClientStatus.PassiveClosed;
logger.LogError(ex, $"Client connect has error. Host={Host}, Port={Port}, LocalHost={LocalHost}, LocalPort={LocalPort}, ExceptionMessage={ex.Message}, ExceptionStackTrace={ex.StackTrace}");
throw new NetworkException(Host, Port, ex.Message);
}
try
{
connectTcs = new TaskCompletionSource <object>();
connectCts = new CancellationTokenSource(3000); //登录验证响应超时
var token = connectCts.Token;
token.Register(() =>
{
try
{
connectTcs.SetException(new TimeoutException("Login response timeout."));
}
catch { }
});
await connectTcs.Task; //等待登录验证响应
}
catch (Exception ex)
{
await CloseAsync();
logger.LogError(ex, $"Client login has error. Host={Host}, Port={Port}, LocalHost={LocalHost}, LocalPort={LocalPort}, ExceptionMessage={ex.Message}, ExceptionStackTrace={ex.StackTrace}");
throw new NetworkException(Host, Port, ex.Message);
}
finally
{
connectCts = null;
connectTcs = null;
}
Status = ClientStatus.Connected;
logger.LogDebug($"Client connect finished. Host={Host}, Port={Port}, LocalHost={LocalHost}, LocalPort={LocalPort}");
}
