[zeromq-dev] ZeroMQ C++

SIMON BABY simonkbaby at gmail.com
Thu Jul 25 22:25:46 CEST 2019

Thank you Michal. While building my code, I see below error. can anyone
suggest to fix this.

tdy at ubuntu:~/ZIPCpp$ make all
mkdir -p build/src/fmt/
g++ -O2 -std=c++11 -fPIC -Wall -Wextra -fmessage-length=0 -pthread
-I/cppzmq/ -Iinclude -MMD -MP -c src/fmt/posix.cc -o
mkdir -p build/src/fmt/
g++ -O2 -std=c++11 -fPIC -Wall -Wextra -fmessage-length=0 -pthread
-I/cppzmq/ -Iinclude -MMD -MP -c src/fmt/format.cc -o
mkdir -p build/src/
g++ -O2 -std=c++11 -fPIC -Wall -Wextra -fmessage-length=0 -pthread
-I/cppzmq/ -Iinclude -MMD -MP -c src/zipc.cpp -o build/src/zipc.cpp.o
src/zipc.cpp: In function ‘bool zipc::sockPoll(zmq::socket_t*, int)’:
src/zipc.cpp:115:53: error: cannot convert ‘zmq::socket_t’ to ‘void*’ in
     pollitem_t pollItem = { *sock, 0, ZMQ_POLLIN, 0 };
src/zipc.cpp: In static member function ‘static std::vector<unsigned int>
zipc::Endpoint::pollEndpoints(const EndpointList&, int)’:
s*rc/zipc.cpp:365:69: error: cannot convert ‘zmq::socket_t’ to ‘void*’ in
         pollitem_t pollItem = { *epIt->get().sock, 0, ZMQ_POLLIN, 0 };  //
no constructor for pollitem_t
src/zipc.cpp: In member function ‘void zipc::Proxy::run()’:
*src/zipc.cpp:545:78: error: cannot convert ‘zmq::socket_t’ to ‘void*’ for
argument ‘1’ to ‘void zmq::proxy_steerable(void*, void*, void*, void*)’*
     proxy_steerable(*this->feSock, *this->beSock, nullptr,

src/zipc.cpp: At global scope:
src/zipc.cpp:58:6: warning: ‘void zipc::mpmsgListSend(zipc::MPMsgList&,
zmq::socket_t*, int)’ defined but not used [-Wunused-function]
 void mpmsgListSend(MPMsgList &mpmsgList, socket_t *sock, int flags)
src/zipc.cpp:70:6: warning: ‘bool zipc::msgRecvPoll(zipc::Msg&,
zmq::socket_t*, int)’ defined but not used [-Wunused-function]
 bool msgRecvPoll(Msg &msg, socket_t *sock, int timeoutMs)
src/zipc.cpp:129:6: warning: ‘void zipc::sockDetach(zmq::socket_t*, const
string&, zipc::AttachType)’ defined but not used [-Wunused-function]
 void sockDetach(socket_t *sock, const std::string &epAddr, AttachType
Makefile:50: recipe for target 'build/src/zipc.cpp.o' failed
make: *** [build/src/zipc.cpp.o] Error 1
tdy at ubuntu:~/ZIPCpp$ uname -a
Linux ubuntu 4.10.0-28-generic #32~16.04.2-Ubuntu SMP Thu Jul 20 10:19:13
UTC 2017 i686 i686 i686 GNU/Linux


On Thu, Jul 25, 2019 at 1:06 PM Michal Vyskocil <michal.vyskocil at gmail.com>

> Hi,
> Just use zpoller from czmq. It is C library, but with really nice API you
> can call from C++ code
> Dne čt 25. 7. 2019 19:33 uživatel Brett Viren via zeromq-dev <
> zeromq-dev at lists.zeromq.org> napsal:
>> SIMON BABY <simonkbaby at gmail.com> writes:
>> > I am looking for a sample source code in c++ with multiple end-points
>> defined in the same process.
>> > Basically my process has to send a receive messages to/from other
>> processes.
>> These two requirements seem contradictory to me.
>> In any case, the zmqpp package has tests written in C++ that have
>> multiple sockets in the same process.
>> https://github.com/zeromq/zmqpp/blob/develop/src/tests/test_socket.cpp#L84
>> I happen to develop in C++ and use libczmq.  Although it is a C library,
>> there has been nothing that limits me using it with C++.
>> -Brett.
>> _______________________________________________
>> zeromq-dev mailing list
>> zeromq-dev at lists.zeromq.org
>> https://lists.zeromq.org/mailman/listinfo/zeromq-dev
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