how to send reponse when timeout in node.js http module

Question

On nodejs.org socket.setTimeout, it says

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

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);

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?

Aaron · Accepted Answer · 2013-01-02 14:11:31Z

9

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);

answered Jan 2, 2013 at 14:11

Aaron

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1 Comment

Adam Over a year ago

This one creates a timeout on each request. It would be better if one common timeout could listen, and write the response on the socket.

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