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我是 zeromq 的新手,对套接字没有经验。

ZeroMQ 套接字是否应该只允许一个套接字绑定()到一个端口?

jeromq 实现允许多个;pyzmq 没有。谁是正确的?

jeromq ZMQ.Socket.bind() 函数最终归结为:

https://github.com/zeromq/jeromq/blob/master/src/main/java/zmq/TcpListener.java#L141

//  Set address to listen on.
public int set_address(final String addr_)  {
    address.resolve(addr_, options.ipv4only > 0 ? true : false);

    try {
        handle = ServerSocketChannel.open();
        handle.configureBlocking(false);
        handle.socket().setReuseAddress(true);
        handle.socket().bind(address.address(), options.backlog);
        if (address.getPort()==0)
            address.updatePort(handle.socket().getLocalPort());
    } catch (IOException e) {
        close ();
        return ZError.EADDRINUSE;
    }
    endpoint = address.toString();
    socket.event_listening(endpoint, handle);
    return 0;
}

Python:

C:\tmp\jeromq\jeromq-0.3.2\target>python
Python 2.7.5 |Anaconda 1.9.1 (64-bit)| (default, May 31 2013, 10:45:37) [MSC v.1
500 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import zmq
>>> ctx=zmq.Context()
>>> s=ctx.socket(zmq.PUB)
>>> s.bind_to_random_port('tcp://127.0.0.1')
56356
>>> s2=ctx.socket(zmq.PUB)
>>> s2.bind('tcp://127.0.0.1:56356')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "socket.pyx", line 465, in zmq.core.socket.Socket.bind (zmq\core\socket.c
:4749)
zmq.core.error.ZMQError: Address in use
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1 回答 1

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jeromq 实现允许多个

不,它没有。在 TCP 套接字上设置重用地址仅解决了在与仍处于 TIME_WAIT 状态的应用程序的先前实例的连接时无法绑定侦听套接字的常见开发问题。它不允许端口的两个实例处于 LISTEN 状态。

于 2014-03-10T22:44:43.133 回答