Fix LAN instead of Wi-Fi device bundle config

[Oleg-E-Bakharev]

Summary

React-native server-device connection must be via Wi-Fi. But if the OS-X server has LAN & Wi-Fi interfaces, then device bundle can be incorrectly configured to use LAN interface instead of Wi-Fi. This patch fix this issue. It greps for "baseT" (e.g. media: autoselect (1000baseT )) and skip interface if it is.

Changelog

[iOS] [Fixed] - Fix LAN instead of Wi-Fi device bundle configuration

Test Plan

To reproduce an issue setup Mac OS 10.15.1 with LAN and Wi-Fi active interfaces. And connect
real device (not simulator).

And "ifconfig en0" in console should display LAN interface e.g.:

en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
	options=50b<RXCSUM,TXCSUM,VLAN_HWTAGGING,AV,CHANNEL_IO>
	ether 78:7b:8a:d8:61:42
	inet 10.15.61.16 netmask 0xffffff00 broadcast 10.15.61.255
	nd6 options=201<PERFORMNUD,DAD>
	media: autoselect (1000baseT <full-duplex>)
	status: active

"ifconfig eg1" in console should display WiFi interface e.g.:

en1: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
	options=400<CHANNEL_IO>
	ether 14:20:5e:03:5b:2a
	inet6 fe80::10e6:1cb6:54ec:1b41%en1 prefixlen 64 secured scopeid 0x5
	inet 10.15.91.27 netmask 0xffffff00 broadcast 10.15.91.255
	nd6 options=201<PERFORMNUD,DAD>
	media: autoselect
	status: active

In this case device bundle in react-native-xcode.sh script wood be incorrectly configured to use en0 (LAN interface) instead of en1(Wi-Fi) interface.

My patch fixes this issue.

fragment of script output before patch:

...
++ ipconfig getifaddr en0
+ IP=10.15.61.16
+ '[' -z 10.15.61.16 ']
+ '[' -z 10.15.61.16 ']'
+ echo 10.15.61.16
+ [[ -n '' ]]
...

After start project ob device we have time lag about 20s then debug out:
2019-12-20 16:58:57.530538+0300 AwesomeProject[4590:1923358] Task <164D9AB0-8473-4BA3-BD1A-EC0E92887C17>.<1> finished with error [-1001] Error Domain=NSURLErrorDomain Code=-1001 "The request timed out." UserInfo={NSUnderlyingError=0x2838dc2d0 {Error Domain=kCFErrorDomainCFNetwork Code=-1001 "(null)" UserInfo={_kCFStreamErrorCodeKey=-2102, _kCFStreamErrorDomainKey=4}}, NSErrorFailingURLStringKey=http://10.15.61.16:8081/status, NSErrorFailingURLKey=http://10.15.61.16:8081/status, _kCFStreamErrorDomainKey=4, _kCFStreamErrorCodeKey=-2102, NSLocalizedDescription=The request timed out.}

fragment of script output after apply patch:

...
++ ipconfig getifaddr en0
+ IP=10.15.61.16
+ [[ -z 10.15.61.16 ]]
++ ifconfig
++ grep baseT
+ [[ -n 	media: autoselect (1000baseT <full-duplex>)
	media: autoselect (100baseTX <full-duplex>) ]]
++ ipconfig getifaddr en1
+ IP=10.15.91.27
+ '[' -z 10.15.91.27 ']'
+ echo 10.15.91.27
+ [[ -n '' ]]
...

App start OK.

On iPhone /iPad simulator works too.

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Messages

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Thank you for signing our Contributor License Agreement. We can now accept your code for this (and any) Facebook open source project. Thanks!

[hramos]

Thanks for the pull request. Would you mind adding a test plan?

[Oleg-E-Bakharev]

Thanks for the pull request. Would you mind adding a test plan?

Done!

[hramos]

Thank you! The fix is appreciated.

[facebook-github-bot]

@hramos is landing this pull request. If you are a Facebook employee, you can view this diff on Phabricator.

[react-native-bot]

This pull request was successfully merged by @Oleg-E-Bakharev in d1e6f8d.

^{When will my fix make it into a release? | Upcoming Releases}

[anamba]

This change broke things for me, and it took me quite some time to figure out what the heck happened.

I prefer a wired connection when available (am I the only one?), so my wifi interface had a self-assigned address. I ended up removing all interfaces other than Ethernet in order to work around this "fix."