LocalSend apparantly needs an internet connection to look for local LAN/WAN devices or begin transfer (else Timeout answer)

[mmtsuchi]

Describe the bug

LAN/WAN router box without internet.
LocalSend 1.14 on an android device to send files
and LocalSend 1.14 on linux debian on PC.

Send numerous files (92 media files > 3GB) from Android
Hardly detects devices.
Begining transfer.
after near 1 minute, No answer (Timeout)

To reproduce

LAN/WAN router box without internet.
LocalSend 1.14 on an android device to send files
and LocalSend 1.14 on linux debian on PC.
Tried with other but equal port number

An Android, select media files, share through Localsend.

On PC, localsend is in "reciever" mode

on Android, mode "sender".
localsend looking for devices.... hardly discover PC.

begin transfer
no answer from PC (localsend doesn't react even in log activities)
after a moment, error rises. No transfer done. Timeout seen in log activities.

When router gets an internet connection, localsend works as expected.

Expected behavior

localsend working without internet.

Screenshots

No response

Desktop (please complete the following information)

Android 13, localsend 1.14, wifi
PC linux minit 21.3

Smartphone (please complete the following information)

Samsung Android 13, localsend 1.14, wifi

Additional context

port is open in UFW firewall
autorisations are granted on android.

[Tienisto]

Please check the README: https://github.com/localsend/localsend?tab=readme-ov-file#setup

Specifically, ensure that AP isolation is turned off (allow devices to communicate with each other)