Question

我得到了那个漂亮的应用程序，现在我要计算一些我想知道的场景应用程序本身为每个会话生成多少入站/出站流量。我不想使用浏览器，而是从服务器端收集信息。

nodejs net.server没有任何符合描述的方法，我发现只有net.socket方法：

socket.bytesRead接收的字节数。

socket.bytesWritten发送的字节数。

他们是否适用于通过net.server生成的流量？任何收集这种统计数据的现有node_modules？

提前致谢

Answer 1

嗯，那是因为net.server使用了net.socket。要获得总计，您必须在套接字关闭后将bytesRead和bytesWritten添加到总计中。例如：

const net = require("net");

var server = net.createServer(function (c) {
    c.on('close', function () {
        // add to the totals
        server.bytesSent += c.bytesWritten;
        server.bytesReceived += c.bytesRead;
    });

    c.write('Hello world!\r\n');
    c.pipe(c);
    c.end();
});

server.bytesReceived = 0;
server.bytesSent = 0;

server.listen(3000);

var time = process.hrtime();
setInterval(function (){
    process.stdout.write('\u001B[2J\u001B[0;0f');
    var diff = process.hrtime(time)[0] + process.hrtime(time)[1]/1000000000;
    var bpsSent = Math.round(server.bytesSent/diff) || 0;
    var bpsReceived = Math.round(server.bytesReceived/diff) || 0;
    console.log("Running node.js %s on %s-%s", process.version, process.platform, process.arch);
    console.log("Memory usage: %d bytes", process.memoryUsage().rss);
    console.log("Uptime: %ds", Math.round(process.uptime()));
    console.log("Open connections: %d", server.connections);
    console.log("In: %d bytes (%d bytes/s)", server.bytesReceived, bpsReceived);
    console.log("Out: %d bytes (%d bytes/s)", server.bytesSent, bpsSent);
}, 100);

如果您需要实时更新总计（当接收/发送数据时），您可以在写入/读取时将缓冲区的长度直接添加到总计中。当你的插座长时间打开并传输大量数据时，这一点尤其有用。

var server = net.createServer(function (c) {
    var oldWrite = c.write;
    c.write = function(d) {
        if (!Buffer.isBuffer(d)) {
            d = new Buffer(d);
        }
        oldWrite.call(this, d);
        server.bytesSent += d.length;
    };

    c.on('data', function(d){
        server.bytesReceived += d.length;
    });

    c.write('Hello world!\r\n');
    c.pipe(c);
    c.end();
});

测量Node.js通过net.server生成的总入站/出站流量

1 个答案: