待傳輸的資料

cv::Mat mat

訂閱端（sub）

import cv2
import zmq

sub_port = 6666
context = zmq.Context()
#connect to socket we subscrib
socket_sub = context.socket(zmq.SUB)
socket_sub.connect("tcp://localhost:%d" %sub_port)
socket_sub.setsockopt(zmq.SUBSCRIBE, b"")


while True:
    contents  =  socket_sub.recv()
    nparr = np.asarray(bytearray(contents), dtype="uint8")
    img_decode = cv2.imdecode(nparr, cv2.IMREAD_COLOR)
    cv2.imshow('URL2Image',img_decode)
    cv2.waitKey(0)
 

釋出端（PUB）

#include <zmq.hpp>
#include <unistd.h>
#include <string>

zmq::context_t context (1);
zmq::socket_t skt (context, ZMQ_PUB);
skt.bind ("tcp://*:"+ std::to_string(pub_port));
vector<uchar> data_encode;

int pub_port = 6666;
cv::imencode(".png", mat, data_encode);

zmq::message_t msg(data_encode.size());
memcpy(msg.data(), data_encode.data(), data_encode.size());
skt.send(msg);