[client] Wait for the overlay address before binding the file drop receiver

mirror of https://github.com/netbirdio/netbird.git synced 2026-10-02 03:29:07 +02:00

iOS applies the tunnel address out of band, after handing the engine the
tun fd, so the receiver bound to that address a moment too early and failed
with EADDRNOTAVAIL. Nothing retried it, leaving the peer able to send but
never to receive for the life of the connection.

Wait for the address to appear and bind then, and let a rebind start a
receiver that is down rather than skipping it. Only the subsystems that
asked to be bound are bound, so the SSH sessions and DNS queries that other
listeners are carrying are left alone.

The wait itself is iOS-only: every other platform assigns the address in the
call chain that creates the interface, or is handed one that already carries
it, so there it compiles down to nothing.

This commit is contained in:

Zoltan Papp

2026-09-05 20:31:33 +02:00

parent 932e3c263a

commit de39cad718

4 changed files with 178 additions and 6 deletions

									
										client/internal/engine.go
									
		+1
		
												View File
												
				@@ -257,6 +257,7 @@ type Engine struct {

					fileDrop        *filedrop.Manager

					fileDropRunning bool

					fileDropPort    uint16

					overlayWait     overlayWaiter

					statusRecorder *peer.Status