Cellular Network Infrastructure » Core Network (CN) » OsmoHNBGW

I've seen a user report situations where there are thousands of stale hnb_context reported via the VTY. they all show up like:

HNB (no addr) "012345.foo.bar.com" 
MCC 901 MNC 99 LAC 63110 RAC 1 SAC 0 CID 63110 SCTP-stream:HNBAP=0,RUA=0

So somehow a HNB once was registered but the connection has since been severed without us properly cleaning up state.

There's hnb_context_release which gets called in case osmo_stream_srv_recv() returns <= 0. So either there's a bug in our code, or the condition is never hit? The (no addr) should give us some indication of what state we're in: Either ofd == NULL or odf->fd < 0 or osmo_sock_get_name() returns NULL

Assigning to neels, but if osmith wants to take a look, fine, too.