Question

我想通过基于NodeJS的后端将图像从一个客户端流式传输到另一个客户端。我每隔40ms向后端发送一个图像，然后将图像发送到另一个客户端。我的问题是，每个客户端对在后端增加了5％的负载。每张图片大约20KB。

我的前端代码如下所示：

const socket = require('socket.io-client')('http://localhost:3000');
const fs = require('fs');

socket.on('connect', function () {
    console.log('connected');
    socket.emit('room', '123456');
});

socket.on('joined', () => {
    console.log('joined the room');
    const file = fs.readFileSync('./1902865_597805016961665_1536612023_n.jpg');

    setInterval(() => {
        socket.emit('frame', file);
    }, 40);
});

后端看起来像这样：

const app = require('express')();
const http = require('http').Server(app);
const io = require('socket.io')(http);

http.listen(3000, function () {
    console.log('listening on *:3000');
});

io.on('connection', socket => {
    socket.on('room', function (room) {
        console.log(`got join request for ${room}`);
        socket.join(room);
        socket.myroom = room;
        socket.emit('joined');
    });

    socket.on('disconnect', function () {
        socket.to(socket.myroom).emit('disconnected');
        socket.disconnect();
    });

    socket.frameCounter = 0;
    socket.on('frame', frame => {
        console.dir(`frameCounter ${socket.frameCounter}`);
        socket.frameCounter += 1;
        socket.to(socket.myroom).emit('frame', frame);
    });
});

可在此处找到一个工作示例：https://code.flyacts.com/tsc/socket-io-performance-problems/

这是预期的行为吗？或者我做错了什么？

通过socket.io在websockets上传输图像时的重载

0 个答案: