Changes

erab_fsm: add all-state event handler

This patch prepares for a follow-up commit adding a request
(fetch_info) that must be handled in any state.

Change-Id: I2673f18ddee0f1eee27bb0ed71ca9073d6dea3f2

erab_fsm: add fetch_info/1 for state introspection

This API will be used by the upcoming interactive VTY interface.

Change-Id: I02d5d043d6eda67c5bf2a6cf6ec1b863030a05a9
Related: SYS#7066

sctp_server: add type hints

Change-Id: I0ddeccb81c52f1769fa0754c5628b53b1c9feb81

sctp_server: cosmetic: use ?FUNCTION_NAME in send_data/2

Change-Id: Ifd646ba1383840f656df5a798299a5ed116731ae

sctp_server: pass MME addr/port to sctp_proxy as opaque data

This is the first step towards the goal of making the sctp_server
module more generic and abstract from the client module's API.

Change-Id: I1bd5f17d940173c4ec2d8d7a1d48778098008c84

sctp_server: cosmetic: rename State -> S

Using a shorter name makes the code more compact and beings it
in consistency with other modules.

Change-Id: I8dde744ac8b8798cdeed5d4eac47d4f650fe03f9

sctp_server: cosmetic: make #server_state last argument

Make it consistent with the gen_server and gen_statem API.

Change-Id: I34bcdb818f58ccfa045d9fe17743523480e785f2

sctp_server: pass #server_state to client_{add,del}()

Prepare for a follow-up patch, in which functions client_{add,del}()
will need to access more fields from the #server_state.

Change-Id: I5f784617745a9ecec2cfa998dc70e176311d24b1

sctp_server: make it abstract from sctp_proxy logic

Instead of using the sctp_proxy API directly, let the caller pass
a module name (handler), which implements the sctp_client behavior.

This makes the interaction between modules cleaner, allows to reuse
the sctp_server module in other places, and makes testing easier.

Change-Id: Iee4202dd4d4e9762fe74ead985aa43343ebdc524

sctp_server: add fetch_conn_list/0 for state introspection

This API will be used by the upcoming interactive VTY interface.

Change-Id: Ia673d6d57bbc3decf2c8038c1ee9573937702520

sctp_proxy: add all-state event handler

This patch prepares for a follow-up commit adding a request
(fetch_info) that must be handled in any state.

Change-Id: I7b6acba7dd367fa28db8922a38ac10c00bd479fe

sctp_proxy: add fetch_info/1 for state introspection

This API will be used by the upcoming interactive VTY interface.

Change-Id: Ifd495c3b5e6f036fca1fbb2a06330f06ddfbbe61