The P-CSCF comes from the network. At every start imsd reads the list the carrier put in the ims PDN's PCO from the modem, so PCSCF= in /etc/imsd.env is no longer needed; set it only to override what the network says, or where discovery finds nothing.
imsd-pcscf --mux <rmnet mux id> prints the PDN's P-CSCF list for diagnosis.
GNOME Calls' oFono backend (imsd-ofono) no longer waits for the IMS bring-up at boot or at an upgrade: it starts at once and picks imsd up when it appears.
Fixes
A fresh registration used to flush the host's whole xfrm state and policy, taking a policy-based VPN's SAs and policies with it. imsd now deletes its own entries by key and installs the new pair.
A registration is resumed on the P-CSCF it was made to even when the configured or discovered address differs; the next fresh registration moves there.
Breaking
VoLTE registers without any configuration on every phone where registration is possible. The existence of /etc/imsd.env no longer changes behaviour.
PCSCF= has one accepted spelling: RFC 5952 form (what ip prints for a plain IPv6 address). An upper-case, zero-padded or uncompressed value used to be taken silently and then made every restart register fresh. LOCAL= is compared in RFC 5952 form whatever its spelling.
jorijnvdgraaf released this