如何在node.js http模块中超时时发送响应 [英] how to send reponse when timeout in node.js http module

问题描述

在nodejs.org socket.setTimeout 上，

On nodejs.org socket.setTimeout, it says

当触发空闲超时时，套接字将收到超时"事件，但不会断开连接.

When an idle timeout is triggered the socket will receive a 'timeout' event but the connection will not be severed.

但是当我测试这样的代码时:

But when I test code like this:

var http = require('http');

server = http.createServer(function (request, response) {
    request.socket.setTimeout(500);
    request.socket.on('timeout', function () {
        response.writeHead(200, {'content-type': 'text/html'});
        response.end('hello world');
        console.log('timeout');
    });
});

server.listen(8080);

套接字在超时后立即关闭，并且没有数据回复浏览器.这与文档有很大的不同.这是一个错误还是在http模块下有任何技巧可以解决套接字?

The socket is closed immediately after timeout, and no data is replied to the browser. Which is quite different from the document. Is this a bug or is there any tricks dealing socket under http module?

推荐答案

文档确实是正确的，但是看起来http模块添加了一个调用socket.destroy()的超时"侦听器.因此，您需要做的是通过调用request.socket.removeAllListeners('timeout')摆脱该侦听器. 因此您的代码应如下所示:

The documentation is indeed correct, however it looks like the http module adds a 'timeout' listener which calls socket.destroy(). So what you need to do is get rid of that listener by calling request.socket.removeAllListeners('timeout'). So your code should look like:

var http = require('http');

server = http.createServer(function (request, response) {
    request.socket.setTimeout(500);
    request.socket.removeAllListeners('timeout'); 
    request.socket.on('timeout', function () {
        response.writeHead(200, {'content-type': 'text/html'});
        response.end('hello world');
        console.log('timeout');
    });
});

server.listen(8080);

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