当服务器位于客户端以外的 IP 上时如何使用 ZMQ



我学会了如何在localhost上使用ZeroMQ,但我未能在远程IP上使用

Q1: 我需要经纪人吗?
如果是这样,
Q2:哪个经纪人以及如何做。?


更新:

还行。我使用的是ZMQ天气更新示例,但使用远程 IP(不是localhost)。这是我使用 C# ZMQ 绑定所做的(但是,我可以使用任何其他语言):

ZMQ 服务器:

using (var context = new ZContext())
using (var publisher = new ZSocket(context, ZSocketType.PUB))
{
    string address = "tcp://*:5001";
    publisher.Bind(address);
    publisher.Send("msg")
}

代理:

using (var context  = new ZContext())
using (var frontend = new ZSocket(context, ZSocketType.XSUB))
using (var backend  = new ZSocket(context, ZSocketType.XPUB))
{
    // Frontend is where the weather server sits
    string localhost = "tcp://127.0.0.1:5001";
    Console.WriteLine("I: Connecting to {0}", localhost);
    frontend.Connect(localhost);
    // Backend is our public endpoint for subscribers
    string remoteIP = "216.123.23.98";                          // For example
    var tcpAddress = string.Format("tcp://{0}:8100", remoteIP); // I also tried localhost address here
    Console.WriteLine("I: Binding on {0}", tcpAddress);
    backend.Bind(tcpAddress);
    var epgmAddress = string.Format("epgm://localhost;{0}:8100", remoteIP);
    Console.WriteLine("I: Binding on {0}", epgmAddress);
    backend.Bind(epgmAddress);
    using (var subscription = ZFrame.Create(1))
    {
        subscription.Write(new byte[] { 0x1 }, 0, 1);
        backend.Send(subscription);
    }
    // Run the proxy until the user interrupts us
    ZContext.Proxy(frontend, backend);
}

客户:

using (var context    = new ZContext())
using (var subscriber = new ZSocket(context, ZSocketType.SUB))
{
    string remoteIP = "tcp://216.123.23.98";              //For example
    Console.WriteLine("I: Connecting to {0}…", remoteIP);
    subscriber.Connect(connect_to);
    // Subscribe to zipcode
    string zipCode = args[0];
    Console.WriteLine("I: Subscribing to zip code {0}…", zipCode);
    subscriber.Subscribe(zipCode);
    // Process 10 updates
    int i = 0;
    long total_temperature = 0;
    for (; i < 20; ++i)
    {
        ZError err;
        using (var replyFrame = subscriber.ReceiveFrame(out err))
        {
            string reply = replyFrame.ReadString(Encoding.ASCII);
            Console.WriteLine(reply);
            total_temperature += Convert.ToInt64(reply.Split(' ')[1]);
        }
    }
    Console.WriteLine("Average temperature for zipcode '{0}' was {1}", zipCode, (total_temperature / i));
}

当我运行它时,我在服务器中出现错误,在代理中出现错误 - 服务器得到

Invalid end point

代理得到EINVAL(22)

Invalid argument at ZeroMQ.ZSocket.Bind(String endpoint)

> A1: 不,ZeroMQ 是一个无代理的消息传递框架。

A2: 不适用


如何修复代码?

对于TCP/IP情况,所有服务都需要遵守各自的传输类寻址规则 - .bind() / .connect()方法都必须声明IP:PORT#规范的两个部分(IP部分的DNS解析有一些帮助,但:PORT#部分仍然是强制性的)

(源代码在客户端中不满足,参考:

 subscriber.Connect(connect_to);

而也应该有一个Proxy边匹配:PORT#,即:8100,指定,用于正确的.connect())。

为清楚起见并避免port#冲突,请从代码中删除epgm传输类。

相关内容

  • 没有找到相关文章

最新更新