When using one phone as Wifi AP and the other connect to this AP, controller app and robot app can NOT connect

[yijunwu]

Describe the bug
When using one phone as Wifi AP and the other connect to this AP, controller app and robot app can NOT connect

To Reproduce
Steps to reproduce the behavior:

1. Two phones, lets say A and B. Start Wifi Access Point on A
2. On phone B, connect to that Wifi provided by A
3. Run robot App on A, select phone as control mode; Run controller App on B
4. Robot app can not find controller app (service) hence from user point of view, controller can't connect to robot

Expected behavior
When using one phone as Wifi AP and the other connect to this AP, controller app and robot app can connect. This will be a convinient way to allow users to use phone control mode even in out-door scenario.

Smartphone (please complete the following information):

• Device: Samsung S20FE, Samsung A40S, Samsung A6S tested
• OS: Android 10, 11
• Version 0.7.1, master

Additional context
I've worked out a fix for this issue, will create PR soon.

[yijunwu]

I've create a PR (#388) to fix this. Please kindly review and merge.

[hardikgarg02]

Its working fine for android. Can you also check same functionality for IOS application.

[yijunwu]

Its working fine for android. Can you also check same functionality for IOS application.

I'll take a look, but I'm not familiar with iOS dev, so I'm not sure how much time it'll take.