[zeromq-dev] How to receive byte array in ZeroMQ C++

Ravi Joshi ravi.joshi53 at yahoo.com
Fri Nov 24 06:39:44 CET 2017

Dear Mykola,

Thank you very much.

The message is defined in C# as follows:

var message = new ZMessage
    new ZFrame(myByteArray)

I want to get the byte array in C++. May I use something like following:

zmq::message_t msg;
int rc = zmq_socket.recv(&msg);
if (rc)
    unsigned char bytearray[] = msg.data();

Please check out following Pastebin links, to see publisher and subscriber code:
(1) https://pastebin.com/PJ7f2TJ5
(2) https://pastebin.com/JKf0cZjh


On Friday, 24 November 2017 1:35 AM, Mykola Ostrovskyy via zeromq-dev <zeromq-dev at lists.zeromq.org> wrote:

Hello Ravi,

If that's just a raw byte array, msg.data<uint8_t>() should to the trick. For example:

    for (size_t i = 0; i < msg.size(); ++i) {
        printf("%02X ", msg.data<uint8_t>()[i]);


2017-11-23 14:52 GMT+02:00 Ravi Joshi via zeromq-dev <zeromq-dev at lists.zeromq.org>:

>Hope you are having a good time. I am publishing byte array using ZeroMQ in C#. Please see the publisher here (https://pastebin.com/PJ7f2TJ5 )
>I am trying to receive this byte array in C++. Please see the subscriber in C++ here (https://pastebin.com/JKf0cZjh )
>I want to know that how to receive the sent bytes in C++?
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