http: RangeError

Node.js v24.6.0

This should not be possible... looks like a node core bug to me

RangeError [ERR_OUT_OF_RANGE]: The value of "msecs" is out of range. It must be a non-negative finite number. Received NaN
    at getTimerDuration (node:internal/timers:425:11)
    at TLSSocket.setStreamTimeout [as setTimeout] (node:internal/stream_base_commons:243:11)
    at resOnFinish (node:_http_server:1032:14)
    at ServerResponse.emit (node:events:508:28)
    at onFinish (node:_http_outgoing:1024:10)
    at callback (node:internal/streams/writable:764:21)
    at afterWrite (node:internal/streams/writable:708:5)
    at onwrite (node:internal/streams/writable:686:7)
    at WriteWrap.onWriteComplete [as oncomplete] (node:internal/stream_base_commons:105:10)

@haramj

@haramj

I think this might be related to http2 to http1 fallback. @nodejs/http2 Not sure I quite follow the logic yet...

Found what causes this:

import http2 from 'node:http2'
import https from 'node:https'
import { readFileSync } from 'node:fs'

const server = http2.createSecureServer({
  key: readFileSync('../proxy/cert/server.key'),
  cert: readFileSync('../proxy/cert/server.crt'),
  allowHTTP1: true,
})
.on('request', (req, res) => {
  console.log(req.httpVersion, server.keepAliveTimeout, server.keepAliveTimeoutBuffer) // 1.1 undefined undefined
})
.listen(9999)

server.keepAliveTimeout = 1e3

https.get('https://localhost:9999', { rejectUnauthorized: false }, (res) => {
  res.end()
})

@ronag

@ronag
I recently opened PR #59243 (http: add server.keepAliveTimeoutBuffer option),
which touches a similar area of the HTTP keep-alive handling.

I thought this issue might be related to keepAliveTimeout /
keepAliveTimeoutBuffer being left undefined when falling back from HTTP/2 to HTTP/1.

I now see that follow-up PRs (#59773, #59784) are already in progress to fix this.
Sorry for the noise..

Closing as this issue was fixed in #59784

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http: RangeError #59772

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ronag commented on Sep 5, 2025

ronag commented on Sep 6, 2025

ronag commented on Sep 6, 2025

haramj commented on Sep 6, 2025

trivikr commented on May 20, 2026

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