Python UDP 服务器运行在 Docker 容器中

Question

在继续开发之前，我想在 Docker 中测试一个简单的 UDP 服务器。我以前从未使用过 Docker，所以我认为这应该是初学者的错误

我目前有什么？

The server

import threading
import socketserver



class ThreadedUDPRequestHandler(socketserver.BaseRequestHandler):

    def handle(self):
        data = self.request[0].strip()
        current_thread = threading.current_thread()
        print("Thread: {} client: {}, wrote: {}".format(current_thread.name, self.client_address, data))
        Split = threading.Thread(target=ParseIncomingData,args=(data,))
        Split.start()



class ThreadedUDPServer(socketserver.ThreadingMixIn, socketserver.UDPServer):
    pass

def publish_messages(data):
    """Publishes multiple messages to a Pub/Sub topic."""
    print('Published {} .'.format(data))

def ParseIncomingData(message):
    sender = threading.Thread(target=publish_messages, args=(message,))
    sender.start()


if __name__ == "__main__":
    HOST, PORT = "0.0.0.0", 6071
    try:
        serverUDP = ThreadedUDPServer((HOST, PORT), ThreadedUDPRequestHandler)
        server_thread_UDP = threading.Thread(target=serverUDP.serve_forever)
        server_thread_UDP.daemon = True
        server_thread_UDP.start()
        serverUDP.serve_forever()
    except (KeyboardInterrupt, SystemExit):
        serverUDP.shutdown()
        serverUDP.server_close()
        exit()

dockerfile

# Use an official Python runtime as a base image
FROM python:3.7.2-slim

# Set the working directory to /app
WORKDIR /app

# Copy the current directory contents into the container at /app
ADD . /app

# Make port 6071 available outside this container
EXPOSE 6071/udp

# Run app.py when the container launches
CMD ["python", "app.py"]

How I execute the container?

docker run --rm -p 6071:6071/udp listener

我已经尝试了几种关于端口使用的组合，但是当我运行它时我没有看到任何东西 (Windows)

额外：

为了测试我使用 hercules 发送 USP 数据的服务器：

Answer 1

它适用于此配置：

在 dockerfile 中使用无缓冲输出

CMD ["python","-u","main.py"]

Python UDP 服务器 运行 在 Docker 容器中

Python UDP server running in Docker container

python

udp

docker

Python UDP 服务器运行在 Docker 容器中