Created
August 24, 2019 22:49
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| #include <zmq.hpp> | |
| #include <sys/epoll.h> | |
| #include <iostream> | |
| int main() | |
| { | |
| void* ctx = zmq_ctx_new(); | |
| void* socket = zmq_socket(ctx, ZMQ_PUSH); | |
| std::cerr << zmq_connect(socket, "tcp://127.0.0.1:5555") << std::endl; | |
| uint32_t hwm = 1; | |
| zmq_setsockopt(socket, ZMQ_SNDHWM, &hwm, sizeof(hwm)); | |
| int fd; | |
| size_t size = sizeof(fd); | |
| zmq_getsockopt(socket, ZMQ_FD, &fd, &size); | |
| std::cerr << "FD: " << fd << std::endl; | |
| struct epoll_event event; | |
| event.events = EPOLLIN | EPOLLOUT | EPOLLET | EPOLLHUP; | |
| event.data.fd = fd; | |
| int epoll = epoll_create(1); | |
| epoll_ctl(epoll, EPOLL_CTL_ADD, fd, &event); | |
| struct epoll_event events[10]; | |
| while (true) | |
| { | |
| int event_count = epoll_wait(epoll, events, 10, -1); | |
| std::cerr << "Event count: " << event_count << ", "; | |
| for (int i = 0; i < event_count; i++) | |
| { | |
| if (events[i].events & EPOLLOUT) std::cerr << "EPOLLOUT "; | |
| if (events[i].events & EPOLLIN) std::cerr << "EPOLLIN "; | |
| if (events[i].events & EPOLLHUP) std::cerr << "EPOLLHUP "; | |
| } | |
| // if you comment the zmq_getsockopt call, it should not work | |
| int zmq_events; | |
| zmq_getsockopt(socket, ZMQ_EVENTS, &zmq_events, &size); | |
| if (zmq_events & ZMQ_POLLIN) std::cerr << "ZMQ_POLLIN "; | |
| if (zmq_events & ZMQ_POLLOUT) std::cerr << "ZMQ_POLLOUT "; | |
| std::cerr << std::endl; | |
| auto send = 1; | |
| while (send > 0) | |
| { | |
| zmq_msg_t msg; | |
| zmq_msg_init_size(&msg, 5); | |
| std::memcpy(zmq_msg_data(&msg), "World", 5); | |
| send = zmq_msg_send(&msg, socket, ZMQ_DONTWAIT); | |
| std::cerr << "Sending: " << send << std::endl; | |
| } | |
| } | |
| printf("AFTER SEND\n"); | |
| return 0; | |
| } |
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