Fix default server host value causing issues on Windows

[ijjk]

This fixes a case where the HMR connection for fast refresh would fail to connect on Windows due to a change being made to the default host being listened to. Previously we didn't set a default for the host value when calling server.listen which allowed the default listening behavior to be used although in #20409 a default of 0.0.0.0 was added which causes conflicts for some set-ups mainly on Windows it seems.

Bug

• Related issues linked using fixes #number
• Integration tests added (N/A)
• Errors have helpful link attached, see contributing.md

Fixes: #27298
Fixes: #27254
Fixes: #4456 (comment)
Fixes: #20409 (comment)
x-ref: #20409

[styfle]

Can we add a test for this to ensure it fixes the bug?

[ijjk]

It doesn't look like we can add a test case for this since it affects specific Windows configurations/network setups, although an affected user helped confirm this resolved the issue here #27298 (comment)

[styfle]

Thanks! 🎉

[ijjk]

Stats from current PR

Default Build (Decrease detected ✓)

General Overall increase ⚠️

	vercel/next.js canary	ijjk/next.js fix/windows-listening	Change
buildDuration	13s	12.9s	-97ms
buildDurationCached	3s	3s	-34ms
nodeModulesSize	49.5 MB	49.5 MB	⚠️ +349 B

Page Load Tests Overall decrease ⚠️

	vercel/next.js canary	ijjk/next.js fix/windows-listening	Change
/ failed reqs	0	0	✓
/ total time (seconds)	2.079	2.057	-0.02
/ avg req/sec	1202.39	1215.48	+13.09
/error-in-render failed reqs	0	0	✓
/error-in-render total time (seconds)	1.114	1.13	⚠️ +0.02
/error-in-render avg req/sec	2244.41	2211.66	⚠️ -32.75

Client Bundles (main, webpack, commons)

	vercel/next.js canary	ijjk/next.js fix/windows-listening	Change
359.HASH.js gzip	2.96 kB	2.96 kB	✓
745.HASH.js gzip	180 B	180 B	✓
framework-HASH.js gzip	42.2 kB	42.2 kB	✓
main-HASH.js gzip	20.9 kB	20.9 kB	✓
webpack-HASH.js gzip	1.53 kB	1.53 kB	✓
Overall change	67.8 kB	67.8 kB	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	ijjk/next.js fix/windows-listening	Change
polyfills-HASH.js gzip	31.1 kB	31.1 kB	✓
Overall change	31.1 kB	31.1 kB	✓

Client Pages

	vercel/next.js canary	ijjk/next.js fix/windows-listening	Change
_app-HASH.js gzip	803 B	803 B	✓
_error-HASH.js gzip	3.06 kB	3.06 kB	✓
amp-HASH.js gzip	554 B	554 B	✓
css-HASH.js gzip	329 B	329 B	✓
dynamic-HASH.js gzip	2.52 kB	2.52 kB	✓
head-HASH.js gzip	2.28 kB	2.28 kB	✓
hooks-HASH.js gzip	903 B	903 B	✓
image-HASH.js gzip	5.6 kB	5.6 kB	✓
index-HASH.js gzip	261 B	261 B	✓
link-HASH.js gzip	1.66 kB	1.66 kB	✓
routerDirect..HASH.js gzip	319 B	319 B	✓
script-HASH.js gzip	387 B	387 B	✓
withRouter-HASH.js gzip	320 B	320 B	✓
bb14e60e810b..30f.css gzip	125 B	125 B	✓
Overall change	19.1 kB	19.1 kB	✓

Client Build Manifests

	vercel/next.js canary	ijjk/next.js fix/windows-listening	Change
_buildManifest.js gzip	489 B	489 B	✓
Overall change	489 B	489 B	✓

Rendered Page Sizes

	vercel/next.js canary	ijjk/next.js fix/windows-listening	Change
index.html gzip	530 B	530 B	✓
link.html gzip	544 B	544 B	✓
withRouter.html gzip	524 B	524 B	✓
Overall change	1.6 kB	1.6 kB	✓

---

Webpack 4 Mode (Decrease detected ✓)

General Overall increase ⚠️

	vercel/next.js canary	ijjk/next.js fix/windows-listening	Change
buildDuration	10.5s	10.4s	-92ms
buildDurationCached	4.1s	4s	-78ms
nodeModulesSize	49.5 MB	49.5 MB	⚠️ +349 B

Page Load Tests Overall decrease ⚠️

	vercel/next.js canary	ijjk/next.js fix/windows-listening	Change
/ failed reqs	0	0	✓
/ total time (seconds)	2.07	2.044	-0.03
/ avg req/sec	1207.75	1223.33	+15.58
/error-in-render failed reqs	0	0	✓
/error-in-render total time (seconds)	1.1	1.113	⚠️ +0.01
/error-in-render avg req/sec	2272.58	2246.22	⚠️ -26.36

Client Bundles (main, webpack, commons)

	vercel/next.js canary	ijjk/next.js fix/windows-listening	Change
17.HASH.js gzip	2.98 kB	2.98 kB	✓
18.HASH.js gzip	185 B	185 B	✓
677f882d2ed8..HASH.js gzip	13.7 kB	13.7 kB	✓
framework.HASH.js gzip	41.9 kB	41.9 kB	✓
main-HASH.js gzip	8.4 kB	8.4 kB	✓
webpack-HASH.js gzip	1.22 kB	1.22 kB	✓
Overall change	68.4 kB	68.4 kB	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	ijjk/next.js fix/windows-listening	Change
polyfills-HASH.js gzip	31.3 kB	31.3 kB	✓
Overall change	31.3 kB	31.3 kB	✓

Client Pages

	vercel/next.js canary	ijjk/next.js fix/windows-listening	Change
_app-HASH.js gzip	791 B	791 B	✓
_error-HASH.js gzip	3.76 kB	3.76 kB	✓
amp-HASH.js gzip	552 B	552 B	✓
css-HASH.js gzip	333 B	333 B	✓
dynamic-HASH.js gzip	2.71 kB	2.71 kB	✓
head-HASH.js gzip	2.97 kB	2.97 kB	✓
hooks-HASH.js gzip	911 B	911 B	✓
index-HASH.js gzip	231 B	231 B	✓
link-HASH.js gzip	1.64 kB	1.64 kB	✓
routerDirect..HASH.js gzip	298 B	298 B	✓
script-HASH.js gzip	3.02 kB	3.02 kB	✓
withRouter-HASH.js gzip	294 B	294 B	✓
e025d2764813..52f.css gzip	125 B	125 B	✓
Overall change	17.6 kB	17.6 kB	✓

Client Build Manifests

	vercel/next.js canary	ijjk/next.js fix/windows-listening	Change
_buildManifest.js gzip	500 B	500 B	✓
Overall change	500 B	500 B	✓

Rendered Page Sizes

	vercel/next.js canary	ijjk/next.js fix/windows-listening	Change
index.html gzip	577 B	577 B	✓
link.html gzip	588 B	588 B	✓
withRouter.html gzip	569 B	569 B	✓
Overall change	1.73 kB	1.73 kB	✓

Commit: 0edc2e5