[zeromq-dev] C++ programming help (Was not: Various Majordomo protocol versions)

Brett Viren brett.viren at gmail.com
Fri Mar 13 14:49:23 CET 2020


Hi Simon,

This apparently has nothing to do with majordomo protocol versions.

It would help if you show your code but based on the small hints, I
agree with Brian.  Remove the "*" in front of "sock".

If the build failed to find cppzmq header files you'd see much different
errors.

-Brett.

SIMON BABY <simonkbaby at gmail.com> writes:

> Thanks Brian . I think I am missing some cppzmq package . I am not sure which version I have to use .
>
> On Friday, March 13, 2020, Brian T. Carcich <briantcarcich at gmail.com> wrote:
>
>  I don't have time to be sure, and I don't have your code, but I think the asterisks before [sock] and
>  [eplt->get().sock] are turning (zmq::socket_t*) POINTERS to zmq::socket_t class objects into
>  (zmq::socket_t) class objects, and the C++ compiler can cast the former into (void*) pointer, but
>  not the latter.
>
>  Best regards.
>
>  On Fri, Mar 13, 2020 at 1:23 AM SIMON BABY <simonkbaby at gmail.com> wrote:
>
>  []...]
>
>  src/zipcpp.cpp:125:53: error: cannot convert ‘zmq::socket_t’ to ‘void*’ in initialization
>
>       pollitem_t pollItem = { *sock, 0, ZMQ_POLLIN, 0 };
>
>      [...]
>
>  src/zipcpp.cpp:380:69: error: cannot convert ‘zmq::socket_t’ to ‘void*’ in initialization
>
>           pollitem_t pollItem = { *epIt->get().sock, 0, ZMQ_POLLIN, 0 };  // no constructor for
>  pollitem_t
>
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