Networking & Discovery

Networking & Discovery

Discovery

TransportChat advertises and discovers services on the LAN using Android NSD (DNS-SD):

• Resolves to a host IP and TCP port.
• The app filters out self-advertisements.

If discovery fails (typical on guest or “AP isolation” networks), use Manual Connect:

• Enter Host/IP and Port of the remote device.
• The port is the remote peer’s listening port (shown under Status on their device).

Multicast

Some networks block multicast DNS. The app acquires a multicast lock (CHANGE_WIFI_MULTICAST_STATE) to improve reliability. If peers still don’t appear, try another network or manual connect.

Tips

• Ensure devices are on the same subnet (e.g., 192.168.0.x).
• Avoid VPNs or captive portals that isolate clients.
• Hotspot with one device can work if both endpoints connect through it.