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http.get(url, cb) hangs after 5 requests on node v0.10.32 #8443

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http.get(url, cb) hangs after 5 requests on node v0.10.32#8443
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@hidekiy

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@hidekiy
hidekiy
opened on Sep 24, 2014

I found the strange behavior when I use http.get(url, cb) simply.

I verified this on Windows 7 / 8.1, CentOS 6.5 with official binary.

node v0.11.9 looks good.

I think this condition is insufficient:
https://github.com/joyent/node/blob/v0.10.32/lib/http.js#L1694-L1698

Test code is below:

var http = require('http');

http.createServer(function (req, res) {
    res.writeHead(200, {'Content-Type': 'text/plain'});
    res.end('Hello World\n');
}).listen(2000);

var ix = 0;
setInterval(function () {
    http.get('http://localhost:2000/', function (r) {
        console.log({ix: ix++, status: r.statusCode});
        // the next line will resolve this problem:
        // r._dump();
    });
}, 200);

Output with NODE_DEBUG=http

HTTP: outgoing message end.
HTTP: SERVER new http connection
HTTP: write ret = true
HTTP: outgoing message end.
HTTP: AGENT incoming response!
HTTP: AGENT isHeadResponse false
{ ix: 0, status: 200 }
HTTP: outgoing message end.
HTTP: SERVER new http connection
HTTP: write ret = true
HTTP: outgoing message end.
HTTP: AGENT incoming response!
HTTP: AGENT isHeadResponse false
{ ix: 1, status: 200 }
HTTP: outgoing message end.
HTTP: SERVER new http connection
HTTP: write ret = true
HTTP: outgoing message end.
HTTP: AGENT incoming response!
HTTP: AGENT isHeadResponse false
{ ix: 2, status: 200 }
HTTP: outgoing message end.
HTTP: SERVER new http connection
HTTP: write ret = true
HTTP: outgoing message end.
HTTP: AGENT incoming response!
HTTP: AGENT isHeadResponse false
{ ix: 3, status: 200 }
HTTP: outgoing message end.
HTTP: SERVER new http connection
HTTP: write ret = true
HTTP: outgoing message end.
HTTP: AGENT incoming response!
HTTP: AGENT isHeadResponse false
{ ix: 4, status: 200 }
HTTP: outgoing message end.
HTTP: outgoing message end.
HTTP: outgoing message end.
HTTP: outgoing message end.
HTTP: outgoing message end.
HTTP: outgoing message end.
HTTP: outgoing message end.
HTTP: outgoing message end.
HTTP: outgoing message end.

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