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Remove extra event emitter object, also suppress res errors

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This commit is contained in:
Dorian Niemiec 2024-02-22 00:50:40 +01:00
parent 6f46b52045
commit 27eafbbe2e
1 changed files with 27 additions and 25 deletions
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52
index.js
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@ -250,45 +250,44 @@ function createFastCGIHandler(options) {
} }
}); });
var stdoutPushEvent = new EventEmitter();
function stdoutPush(data) { function stdoutPush(data) {
if(data === null) { if(data === null) {
stdoutToEnd = true; stdoutToEnd = true;
} else { } else {
stdoutBuffer = Buffer.concat([stdoutBuffer, Buffer.from(data)]); stdoutBuffer = Buffer.concat([stdoutBuffer, Buffer.from(data)]);
} }
stdoutPushEvent.emit("ready"); var hpLength = hp.length;
for(var i = 0; i < hpLength; i++) {
var func = hp.shift();
if(func) func();
}
emulatedStdout.resume(); emulatedStdout.resume();
} }
function stdoutRead(n, callback) { var zeroed = false;
if(stdoutBuffer.length == 0 && stdoutToEnd) { var stdoutBuffer = Buffer.alloc(0);
callback(Buffer.alloc(0)); var stdoutToEnd = false;
} else if(n != 0) { var hp = [];
var handler = function() { var emulatedStdout = new stream.Readable({
if(n > stdoutBuffer.length && !stdoutToEnd) { read: function (n) {
stdoutPushEvent.once("ready", handler); var s = this;
fs.writeFileSync("/tmp/fai", ""); var handler = function () {
if (stdoutBuffer.length == 0) {
if (!stdoutToEnd) {
hp.push(handler);
s.pause();
} else {
s.push(null);
}
} else { } else {
var bytesToPush = Math.min(stdoutBuffer.length, n); var bytesToPush = Math.min(stdoutBuffer.length, n);
var bufferToPush = stdoutBuffer.subarray(0, bytesToPush); var bufferToPush = stdoutBuffer.subarray(0, bytesToPush);
stdoutBuffer = stdoutBuffer.subarray(bytesToPush); stdoutBuffer = stdoutBuffer.subarray(bytesToPush);
callback(bufferToPush); s.push(bufferToPush);
if (stdoutBuffer.length == 0 && !stdoutToEnd) s.pause();
} }
}; };
handler(); if (n != 0) handler();
}
}
var stdoutBuffer = Buffer.alloc(0);
var stdoutToEnd = false;
var emulatedStdout = new stream.Readable({
read: function (n) {
var s = this;
stdoutRead(n, function(buffer) {
s.push(buffer.length > 0 ? buffer : null);
});
} }
}); });
emulatedStdout.pause(); //Reduce backpressure emulatedStdout.pause(); //Reduce backpressure
@ -480,6 +479,7 @@ Mod.prototype.callback = function (req, res, serverconsole, responseEnd, href, e
handler.stdout.pipe(res, { handler.stdout.pipe(res, {
end: false end: false
}); });
dataHandler = function () {}; //Prevent event listener memory leaks
} }
} }
}; };
@ -512,10 +512,12 @@ Mod.prototype.callback = function (req, res, serverconsole, responseEnd, href, e
} }
}); });
res.on("close", function() { res.prependListener("close", function() {
if(handler.stdout) handler.stdout.unpipe(res); //Prevent server crashes with write after the end if(handler.stdout) handler.stdout.unpipe(res); //Prevent server crashes with write after the end
}); });
res.on("error", function() {}); //Suppress response stream errors
function handlerConnection() { function handlerConnection() {
handler.stdout.on("data", dataHandler); handler.stdout.on("data", dataHandler);
handler.stderr.on("data", function (data) { handler.stderr.on("data", function (data) {