Hardcoded socket timeout

[natlibfi-arlehiko]

• Version: v12.13.1
• Platform: Linux lx9-981-10905 4.15.0-74-generic Proposal: Introduce CI builds to GitHub PR process #84-Ubuntu SMP Thu Dec 19 08:06:28 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
• Subsystem: Net.Socket

Documentation states that sockets do not have timeout on by default:

Sets the socket to timeout after timeout milliseconds of inactivity on the socket. By default net.Socket do not have a timeout.

And yet, HTTP requests time out after 2 minutes. According to links below, the time out would be hardcoded but I couldn't find proof of this.

https://stackoverflow.com/a/46157120
https://forum.nginx.org/read.php?2,214230,214239#msg-214239

Test case

server.js

const {createServer} = require('http');

createServer(async (req, res) => {
        setTimeout(() => {
          res.end();
        }, 130000);
}).listen(1337);

$ node server.js

$ time curl -v localhost:1337
* Rebuilt URL to: localhost:1337/
*   Trying 127.0.0.1...
* TCP_NODELAY set
* Connected to localhost (127.0.0.1) port 1337 (#0)
> GET / HTTP/1.1
> Host: localhost:1337
> User-Agent: curl/7.58.0
> Accept: */*
>
* Empty reply from server
* Connection #0 to host localhost left intact
curl: (52) Empty reply from server

real    2m0.094s
user    0m0.009s
sys     0m0.018s

Workaround

server.js

const {createServer} = require('http');

createServer(async (req, res) => {
        req.socket.setTimeout(0);

        setTimeout(() => {
          res.end();
        }, 130000);
}).listen(1337);

$ node server.js

$ time curl -v localhost:1337
* Rebuilt URL to: localhost:1337/
*   Trying 127.0.0.1...
* TCP_NODELAY set
* Connected to localhost (127.0.0.1) port 1337 (#0)
> GET / HTTP/1.1
> Host: localhost:1337
> User-Agent: curl/7.58.0
> Accept: */*
>
< HTTP/1.1 200 OK
< Date: Thu, 16 Jan 2020 10:35:48 GMT
< Connection: keep-alive
< Content-Length: 0
<
* Connection #0 to host localhost left intact

real    2m10.057s
user    0m0.027s
sys     0m0.018s

[aduh95]

This has been fixed by #27558, and it has landed in v13.0.0. Because it is a breaking change, it has not been backported to the LTS lines. However you can change the default behaviour using a flag on v12 (#27704) and v10 (#27939).

Duplicate of #27556.

[juanarbol]

@natlibfi-arlehiko thank you for opening the issue, I'm going to close this because it is now fixed on v13x.x and v14.x, and you can change this behavior in v12 by using a flag (thanks @aduh95 for the support, amazing).