使用ZMq_bind（）在MQL4语言的ZeroMQ绑定中遇到麻烦

Question

我正在使用MT4并使用链接

中给出的包装器mql4zmq.dll

https://github.com/AustenConrad/mql4zmq

因为我已经遵循了所有指令并在预编译的特定位置成功加载了DLL和lib文件。但通过 bind 或 {{套接字不能 connect 或 zmq_connect(,) 1}} 即可。请有人帮我解决这个问题。我在这里发布我的代码

zmq_bind(,)

中存在问题

// Include the libzmq.dll abstraction wrapper.
#include <mql4zmq.mqh>

//+------------------------------------------------------------------+
//| variable definitions                                             |
//+------------------------------------------------------------------+
int speaker,listener,contextt;

//+------------------------------------------------------------------+
//| expert initialization function                                   |
//+------------------------------------------------------------------+
int init()
  {
//----
   int major[1];int minor[1];int patch[1];
   zmq_version(major,minor,patch);
   Print("Using zeromq version " + major[0] + "." + minor[0] + "." + patch[0]);

   Print(ping("Hello World"));

   Print("NOTE: to use the precompiled libraries you will need to have the Microsoft Visual C++ 2010 Redistributable Package installed. To Download: http://www.microsoft.com/download/en/details.aspx?id=5555");

   contextt = zmq_init(1);
   speaker = zmq_socket(contextt, ZMQ_PUB);
   listener = zmq_socket(contextt, ZMQ_SUB);

   // Subscribe to the command channel (i.e. "cmd").  
   // NOTE: to subscribe to multiple channels call zmq_setsockopt multiple times.
   zmq_setsockopt(listener, ZMQ_SUBSCRIBE, ""); 

   if (zmq_bind(speaker,"tcp://127.0.0.1:5555") == -1) 
   {
      Print("Error binding the speaker!");
      return(-1);  
   } 

返回 if ( zmq_bind( speaker, "tcp://127.0.0.1:5555" ) == -1 ) ，但 -1 。

我已尽力解决这个谜团但却失败了。

如果我弄错了，请告诉我！

Answer 1

是的，address/port - 正在使用中可能阻止.bind() / .connect()

正如上面的评论所解决的那样 another post with a similar solution of the same root-cause why the well-formed ZeroMQ-code was still not able to .bind()

地址/端口释放/重用是与O / S相关的资源管理问题。一旦开始进行生产级操作，请小心。