res.on("finish") not called on client-side timeout

call.js

const http = require("http");

let callCount = 0;

function call() {
    return new Promise(function(resolve, reject) {
        console.log("new call", ++callCount);
        const req = http.request("http://127.0.0.1:12345/large/", {
            timeout: 100,
        }, function(res) {
            res.on("data", function() {
                console.log("got data");
            });

            res.on("end", function() {
                console.log("res end");
                resolve();
            });
        });

        req.on("timeout", function() {
            req.destroy(new Error("timeout"));
        });

        req.on("error", function(e) {
            console.log("Got an error", e);
            return resolve()
        });

        req.end();
    });
}


async function run() {
    while(true) {
        await call();
    }
}

run();

Dockerfile

FROM node:14.16.0

WORKDIR /app

COPY . /app

run

docker build -t pm2-test:local .
docker run --rm -it -v $PWD/server.js:/app/server.js -p 12345:80 pm2-test:local /bin/bash

server.js

const http = require("http");

let count = 0;
let closeCount = 0;
let finishCount = 0;

function makeLargeString(length) {
    var result = '';
    var characters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
    var charactersLength = characters.length;
    for ( var i = 0; i < length; i++ ) {
        result += characters.charAt(Math.floor(Math.random() * charactersLength));
    }
    return result;
}

const server = http.createServer(function(req, res) {
    console.log("REQUEST", req.url);

    count++;

    res.on("finish", function() {
        finishCount++;
    });

    res.on("close", function() {
        closeCount++;
    });

    if (req.url === "/status/") {
        res.setHeader("content-type", "application/json");
        return res.end(JSON.stringify({
            count,
            closeCount,
            finishCount,
            memory : process.memoryUsage()
        }, null, "\t"));
    }

    if (req.url === "/large/") {
        return setTimeout(function() {
            const largeString = makeLargeString(.5 * 1024 * 1024);
            return res.end(largeString);
        }, 1000);
    }

    return res.end("done");
});

server.listen(80, function() {
    console.log("booted");
});