[zeromq-dev] Access ZeroMQ Error Messages in C++?

[Papp Áron]

Hi Riskybiz,

you may try using zmq_errno() and zmq_strerror() functions, like this:


*int rc = zmq_connect(server_socket, address);*
*
*
*std::cout << "zmq_connect() rc: " << rc << "\n";*
*std::cout << "errno: " << zmq_strerror(zmq_errno()) << " (" << zmq_errno()
<< ")\n";*


Best,
Aron


2013/7/30 <Richard_Newton at waters.com>

> Hi Riskybiz
>
> Assuming you are using cppzmq it will throw an exception, so you can do:
>
> try
>
> {
>  client.connect("tcp://localhost:5555");
> }
> catch (const zmq::error_t& e)
> {
>  std::string errStr = e.what();
> }
>
> Ric.
>
>
> [image: Inactive hide details for Riskybiz ---28/07/2013 07:01:58 PM---So
> I've worked out how to get ZeroMQ error messages like so:]Riskybiz
> ---28/07/2013 07:01:58 PM---So I've worked out how to get ZeroMQ error
> messages like so:
>
> From: Riskybiz <riskybizLive at live.com>
> To: zeromq-dev at lists.zeromq.org
> Date: 28/07/2013 07:01 PM
> Subject: [zeromq-dev] Access ZeroMQ Error Messages in C++?
> Sent by: zeromq-dev-bounces at lists.zeromq.org
> ------------------------------
>
>
>
> So I’ve worked out how to get ZeroMQ error messages like so:
>
> int rc = zmq_bind(server, "tcp://*:5555");
>
>
>    if(rc == -1)
>
>    {
>
>    std::string errStr =  zmq_strerror(zmq_errno());
>
>    std::string errConc = "TestDataAccess: ZMQServer: Bind To REP Failed:
>    " + errStr;
>
>    const char* errOut = errConc.c_str();
>
>    OutputDebugStringA(errOut);
>
>    return 1;
>
>    }
>
>
>
> Question is; how do I catch ZeroMQ error messages in C++;  say if I wanted
> to use:
>
> client.connect("tcp://localhost:5555");
>
> the obvious way I tried:
>
> int rc = client.connect("tcp://localhost:5555");
>
> is just not valid because;
>
> client.connect("tcp://localhost:5555");
>
> returns type ‘void’.
>
> Can anyone provide a quick C++ example of how to accomplish this?
>
> Thanks,
>
> Riskybiz.
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