我正在使用.NET框架创建服务器,该服务器侦听localhost上的两个端口。这是一个简单的控制台应用程序。
当我继续连接到其中一个端口时,它可以工作,但是当我首先连接到另一个端口后,它不再响应。首先还活着。
这是我的代码:
static void Main(string[] args)
{
IPAddress hostIP = Dns.GetHostAddresses("127.0.0.1")[0];
List<TcpListener> listeners = new List<TcpListener>()
{
new TcpListener(hostIP, 6060),
new TcpListener(hostIP, 6061)
};
foreach (TcpListener listener in listeners)
{
listener.Start();
}
try
{
while (true)
{
Socket socket = AcceptAnyConnection(listeners).Result;
NetworkStream stream = new NetworkStream(socket);
byte[] bytes = Encoding.UTF8.GetBytes(DateTime.Now.ToString());
stream.Write(bytes, 0, bytes.Length);
//stream.Close();
socket.Close();
}
}
finally
{
foreach (TcpListener listener in listeners)
{
listener.Stop();
}
}
}
private static async Task<Socket> AcceptAnyConnection(List<TcpListener> listeners)
{
List<Task<Socket>> tasks = new List<Task<Socket>>();
foreach (TcpListener listener in listeners)
{
tasks.Add(AcceptConnection(listener));
}
Task<Socket> completedTask = await Task.WhenAny(tasks);
return await completedTask;
}
private static async Task<Socket> AcceptConnection(TcpListener listener)
{
Socket socket = await listener.AcceptSocketAsync();
return socket;
}
等待Task.WhenAny()阻塞,如果我连接到另一个端口。
我一定做错了,但我不确定是什么。
顺便说一句,我确实对.NET Core控制台应用程序进行了尝试,并且效果很好。
谢谢
答案 0 :(得分:0)
我建议将您的代码重构为类似的东西,然后从那里获取。也就是说,为每个侦听器运行一个无限循环。这样可以避免为每个客户一次只呼叫AcceptTcpClientAsync
的麻烦。
(请注意,没有任何代码可以真正停止监听器。也完全未经测试-请仅将其用作表明采取哪种方法的指示)
static void Main(string[] args)
{
IPAddress hostIP = Dns.GetHostAddresses("127.0.0.1")[0];
List<TcpListener> listeners = new List<TcpListener>()
{
new TcpListener(hostIP, 6060),
new TcpListener(hostIP, 6061)
};
var listenerTasks = listeners.Select(x => RunTcpListener(x)).ToArray();
Task.WaitAll(listenerTasks);
}
private static async Task RunTcpListener(TcpListener listener)
{
listener.Start();
try
{
while (true)
{
using (var client = await listener.AcceptTcpClientAsync())
{
var stream = client.GetStream();
byte[] bytes = Encoding.UTF8.GetBytes(DateTime.Now.ToString());
stream.Write(bytes, 0, bytes.Length);
client.Close();
}
}
}
finally
{
listener.Stop();
}
}
答案 1 :(得分:0)
这是我的代码,在我遵循canton7的建议后,将任务列表移到循环外,并“随我们所愿”移动添加和删除任务。也许我将不得不对其进行清理,但是这个想法可行:
static void Main(string[] args)
{
IPAddress hostIP = Dns.GetHostAddresses("127.0.0.1")[0];
List<TcpListener> listeners = new List<TcpListener>()
{
new TcpListener(hostIP, 6060),
new TcpListener(hostIP, 6061)
};
ProcessConnections(listeners).Wait();
}
private async static Task SendData(Socket socket)
{
NetworkStream stream = new NetworkStream(socket);
byte[] bytes = Encoding.UTF8.GetBytes(DateTime.Now.ToString());
await stream.WriteAsync(bytes, 0, bytes.Length);
socket.Close();
}
private static async Task ProcessConnections(List<TcpListener> listeners)
{
foreach (TcpListener listener in listeners)
{
listener.Start();
}
try
{
List<Task<Socket>> tasks = new List<Task<Socket>>();
foreach (TcpListener listener in listeners)
{
tasks.Add(AcceptConnection(listener));
}
while (true)
{
int i = Task.WaitAny(tasks.ToArray());
Socket socket = await tasks[i];
await SendData(socket);
tasks.RemoveAt(i);
tasks.Insert(i, AcceptConnection(listeners[i]));
}
}
finally
{
foreach (TcpListener listener in listeners)
{
listener.Stop();
}
}
}
private static async Task<Socket> AcceptConnection(TcpListener listener)
{
Socket socket = await listener.AcceptSocketAsync();
return socket;
}