UDP communication fail using iPhone's personal hotspot

Solar2D iOS
#1

The Application–

  I have an IOS application built by Corona, that broadcasts and multicasts its presence onto the network it is running on. The application works flawlessly when the iPhone is connected to a Wi-Fi network. In this case, other devices on the network receive the broadcasts/multicasts, and everything functions correctly.

Needless to say, the application works well on an iPhone connected to a local Wi-Fi.

The Problem–

  When I run the application on an iPhone that has its personal hotspot enabled, no broadcasts/multicasts are released onto the hotspot network.  

 Is there any constraint regarding using a personal hotspot as a network router capable of handling broadcasts and multicasts? 

In summary–

Can anyone explain why an iPhone running a personal hotspot does not broadcast/multicast packets, and how to solve the problem?

Many thanks in advance.

 

 

 

#2

Have you hunted on the Web?  This is a pretty specialized question.

A Google search for ‘iphone personal hotspot udp’ turned up this: 

https://apple.stackexchange.com/questions/175139/network-broadcast-multicast-not-sent-by-iphone-in-personal-hotspot-mode

#3

This topic I had read, and I had tried those methods posted didn’t work.

About that topic, I have tried that I sent message to all the other possible addresses in the subnet (172.20.10.2 - 172.20.10.14). It didn’t work.

And another way is C++ code, corona sdk don’t have its some coefficients about UDP setting.

I  am still very confused about this problem…

Please excuse my poor English

#4

Have you hunted on the Web?  This is a pretty specialized question.

A Google search for ‘iphone personal hotspot udp’ turned up this: 

https://apple.stackexchange.com/questions/175139/network-broadcast-multicast-not-sent-by-iphone-in-personal-hotspot-mode

#5

This topic I had read, and I had tried those methods posted didn’t work.

About that topic, I have tried that I sent message to all the other possible addresses in the subnet (172.20.10.2 - 172.20.10.14). It didn’t work.

And another way is C++ code, corona sdk don’t have its some coefficients about UDP setting.

I  am still very confused about this problem…

Please excuse my poor English