node.js http.IncomingMessage 不触发 'close' 事件

Question

http.IncomingMessage 何时触发其“关闭”事件？

根据documentation它应该在底层连接关闭时发生。但是，下面的示例代码永远不会调用它(我确定它不是由 keep-alive 引起的):

var http = require('http'),
    fs = require('fs');

var server = http.createServer(function(req, res) {
    res.shouldKeepAlive = false;
    req.on("end", function() {
        console.log("request end");
    });
    req.on("close", function() {
        console.log("request close");    // Never called
    });
    res.end("Close connection");
});
server.listen(5555);

我正在使用 node.js v0.10.22。

Answer 1

当底层连接在发送响应之前关闭时，将触发“关闭”事件。

可以使用以下服务器代码进行测试，并在中途中止请求。

var http = require('http'),
    fs = require('fs');

var server = http.createServer(function(req, res) {
    res.shouldKeepAlive = false;
    req.on("end", function() {
        console.log("request end");
    });
    req.on("close", function() {
        console.log("request close");    // Called, when connection closed before response sent
    });

    setTimeout(function () {
        res.end("Close connection");
    }, 5000); // Wait some time to allow user abort
});
server.listen(5555);

感谢gustavohenke !