mesytec-mnode/src/mnode_proto_test1.cc

#include "proto/service.pb.h"
#include "mesy_nng.h"

using namespace mesytec;

void requester(nng_socket socket, unsigned id)
{
    std::uint32_t seq = 0;
    while (true)
    {
        mnode::Ping ping;
        ping.set_peer_id(id);
        ping.set_sequence_number(seq++);
        auto reqMsg = nng::make_message(ping.SerializeAsString());
        if (int rc = nng_sendmsg(socket, reqMsg.release(), 0))
        {
            nng::mesy_nng_error("nng_sendmsg", rc);
            if (rc != NNG_ETIMEDOUT)
                return;
            continue;
        }
        spdlog::info("Sent ping request: {}", ping.ShortDebugString());
        auto [repMsg, rc] = nng::receive_message(socket);
        if (rc)
        {
            nng::mesy_nng_error("nng_recvmsg", rc);
            if (rc != NNG_ETIMEDOUT)
                return;
            continue;
        }
        mnode::Pong pong;
        pong.ParseFromArray(nng_msg_body(repMsg.get()), nng_msg_len(repMsg.get()));
        spdlog::info("Received pong response: {}", pong.ShortDebugString());
    }
}

void responder(nng_socket socket, unsigned id)
{
    while (true)
    {
        auto [reqMsg, rc] = nng::receive_message(socket);
        if (rc)
        {
            nng::mesy_nng_error("nng_recvmsg", rc);
            if (rc != NNG_ETIMEDOUT)
                return;
            continue;
        }
        mnode::Ping ping;
        ping.ParseFromArray(nng_msg_body(reqMsg.get()), nng_msg_len(reqMsg.get()));
        spdlog::info("Received ping request: {}", ping.ShortDebugString());

        mnode::Pong pong;
        pong.set_peer_id(id);
        pong.set_sequence_number(ping.sequence_number());
        auto repMsg = nng::make_message(pong.SerializeAsString());
        if (int rc = nng_sendmsg(socket, repMsg.release(), 0))
        {
            nng::mesy_nng_error("nng_sendmsg", rc);
            if (rc != NNG_ETIMEDOUT)
                return;
            continue;
        }
        spdlog::info("Sent pong response: {}", pong.ShortDebugString());
    }
}

int main()
{
    spdlog::set_level(spdlog::level::info);
    auto reqSocket = nng::make_req_socket();
    auto repSocket = nng::make_rep_socket();

    if (int rc = nng::marry_listen_dial(reqSocket, repSocket, "inproc://test"))
        return rc;

    std::vector<std::thread> threads;
    threads.emplace_back(std::thread(requester, reqSocket, 0));
    threads.emplace_back(std::thread(responder, repSocket, 1));

    for (auto &t: threads)
        if (t.joinable()) t.join();

    return 0;
}