[zeromq-dev] Error: no matching function for call to ‘zmq::socket_t::setsockopt(int, int)’

[Ravi Joshi]

Hi,
I am trying to use a subscriber in C++ in the following way:
zmq_socket.setsockopt(ZMQ_RCVTIMEO, 1000);

But the above line is throwing following error:
no matching function for call to ‘zmq::socket_t::setsockopt(int, int)’


I am also trying to receive published byte array using following code:
unsigned char* byteptr = msg.data<unsigned char>();

But the above line is throwing following error:
error: expected primary-expression before ‘unsigned’

Please check out the following Pastebin link in order to see the complete code (https://pastebin.com/XEYduhaD)
  
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Thanks
Ravi