At the time a SCCP CREF is sent there is no context anymore
and the user of the API might not know where to return the
message to. Allow to specify the incoming context and use it
on the way out.
There are no more callers of _send_msg which passes a NULL
connection and a NULL context.
This allows to identify the sccp connection and send the SCCP
payload down to a different stream depending on the connection. It
will be used by the bsc_msc_ip to keep multiple MSC connections
open.
SCCP can be wrapped inside the MTP Level3, and one can
use it for link testing as well. This repository should
be renamed to libosmo-itu or libosmo-ss7 and be a host
to SS7 related encapsulation...
The code is coming from the cellmgr-ng code.
* Introduce a method to set the value of the debug area to
use and default it to -1. Turn the DSCCP enum into a local
variable to make the log messages work.
* Remove usage of openbsc and libbsc.a
E.g. when the underlying connection transport medium is gone
one needs to force to close SCCP connections, add this helper.
It will remove the connection from the list of connections and
it will free the data.
Instead of deleting the msgb within the SCCP library the implementor
of the write callback needs to free it. This is required for non
blocking io with the server.
I want to reuse the SCCP code for header parsing in the BSC
NAT to identify data and patch the source local reference. To do
this the current handle_* methods will be changed into two parts
one is strictly parsing the other is handling the parsed data.
Currently this will send a dummy inactivity test message,
there is currently no parsing or API to receive the messages.
The sequencing and credit entries are empty as sequencing
is currently not used at all.
The test is currently limited to send the message and see
if the application is crashing or not.
include/sccp/sccp_types.h contain Q.713 and GSM definitions
include/sccp/sccp.h is the application interface resembling
the esentials of the UNIX socket interface.
src/sccp.c is the actual implementation of SCCP featuring
connection and UDT1 support.
tests/sccp/sccp.c is testing connection creation and formating
of the SCCP messages used by the A-interface. And
it contains a simple fuzzing test to test the
robustnes of the implementation.
Holger Hans Peter Freyther
Harald Welte