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@evantahler
Last active May 28, 2016 17:59
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Exploring a node.js memory leak with sending files and setting the Content-Length header
var fs = require('fs');
var http = require('http');
var file = __dirname + '/index.html';
var connections = {};
var idCouner = 0
var port = 8080;
var handleRequset = function(request, response){
idCouner++
var id = idCouner;
connections[id] = {req: request, res: response};
response.on('finish', function(){
delete connections[id];
});
fs.stat(file, function(error, stats){
if(error){ throw error; }
response.writeHead(200, [['Content-Length', stats.size]]);
var fileStream = fs.createReadStream(file);
fileStream.on('open', function(){
fileStream.pipe(response);
});
fileStream.on('error', function(error){
console.log(error); // no errors are caught
});
});
};
http.createServer(handleRequset).listen(port);
console.log('server running on port ' + port);
setInterval(function(){
console.log('connections: ' + Object.keys(connections));
}, 5000);
@n-s-k
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n-s-k commented May 21, 2016

Confirmed on Node 4.2.4 (Windows 7):

λ node server.js
server running on port 8081
connections: 19,20,21,63,103,105,114,124,197,847,853,1046,1105
connections: 19,20,21,63,103,105,114,124,197,847,853,1046,1105,1210,1266,1290,1297,1583,1714,2047,2203
connections: 19,20,21,63,103,105,114,124,197,847,853,1046,1105,1210,1266,1290,1297,1583,1714,2047,2210,2234,2413,2542,2657,2706,2708,2709,3205
connections: 19,20,21,63,103,105,114,124,197,847,853,1046,1105,1210,1266,1290,1297,1583,1714,2047,2210,2234,2413,2542,2657,2706,2708,2709,3275,3346,3523,3525
connections: 19,20,21,63,103,105,114,124,197,847,853,1046,1105,1210,1266,1290,1297,1583,1714,2047,2210,2234,2413,2542,2657,2706,2708,2709,3275,3346,3523,3525,4269
connections: 19,20,21,63,103,105,114,124,197,847,853,1046,1105,1210,1266,1290,1297,1583,1714,2047,2210,2234,2413,2542,2657,2706,2708,2709,3275,3346,3523,3525,4269,5416,5783,5784,5865,6147,6148
connections: 19,20,21,63,103,105,114,124,197,847,853,1046,1105,1210,1266,1290,1297,1583,1714,2047,2210,2234,2413,2542,2657,2706,2708,2709,3275,3346,3523,3525,4269,5416,5783,5784,5865,6147,6148,6563,6779,7139,7140
connections: 19,20,21,63,103,105,114,124,197,847,853,1046,1105,1210,1266,1290,1297,1583,1714,2047,2210,2234,2413,2542,2657,2706,2708,2709,3275,3346,3523,3525,4269,5416,5783,5784,5865,6147,6148,6563,6779,7139,7140,7318,8214

@evantahler
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Please move conversation about this issue to nodejs/node#6929

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