我有 UDP 客户端聊天，它将消息发送到服务器并返回响应。我有两个线程，一个用于发送，一个用于接收消息。我收到 ReceiveFrom() 方法的异常：“您必须在执行此操作之前调用 Bind 方法”。但这是一个客户，我不想绑定任何东西。例如这个客户端工作正常：
byte[] data = new byte[30];
string input, stringData;
IPEndPoint servIPEP = new IPEndPoint(
IPAddress.Parse("127.0.0.1"), 9050);
EndPoint servEP = (EndPoint)servIPEP;
Socket client = new Socket(AddressFamily.InterNetwork,
SocketType.Dgram, ProtocolType.Udp);
string welcome = "Hello, are you there?";
data = Encoding.ASCII.GetBytes(welcome);
client.SendTo(data, data.Length, SocketFlags.None, servEP);
data = new byte[30];
int recv = client.ReceiveFrom(data, ref servEP); //works fine!
接收没有绑定。但是当我创建两个线程时抛出错误：
public ChatClient()
{
clientSock = new Socket(AddressFamily.InterNetwork,
SocketType.Dgram, ProtocolType.Udp);
servIPEP = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 32000);
servEP = (EndPoint)servIPEP;
}
public void ReceiveThread()
{
Thread receiveThread = new Thread(new ThreadStart(ReceiveData));
receiveThread.Start();
}
public void ReceiveData()
{
while(true){
clientSock.ReceiveFrom(buf, ref servEP); //Here I get ERROR
string msg = Encoding.ASCII.GetString(buf).Trim();
Console.WriteLine("New message: {0}",msg);
}
}
public void SendThread()
{
Thread sendThread = new Thread(new ThreadStart(SendData));
sendThread.Start();
}
public void SendData()
{
while (true)
{
Console.WriteLine("Enter message to send: ");
string msg = Console.ReadLine();
buf = Encoding.UTF8.GetBytes(msg);
clientSock.SendTo(buf, servEP);
}
}
}
static void Main(string[] args)
{
ChatClient client = new ChatClient();
client.SendThread();
client.ReceiveThread();
}
}
感谢您的时间。