Osmocom Media Gateway (RTP proxy and RTP/E1 gateway) https://osmocom.org/projects/osmo-mgw
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Philipp Maier 97a9312be8 mgcp_network: fix implicit address loopback
A call agent may send a CRCX to create a connection in LOOPBACK mode but
without specifiying the destination address. In those cases the MGW
should deduct the destination address from the first incoming RTP
packet.

Unfortunately this is currently blocked by an OSMO_ASSERT that checks the
current sa_familiy against the sa_family from the incoming packet. This
makes no sense since the current sa_family is still uninitalized, which
is expected and not an error since the code that follows will initalize
it.

It also makes sense not to access the osmo_sockaddr struct members
individually but rather copy the address as a wohle.

Since the event only happens once and since it is also somewhat special
it makes sense to log the event as well.

Change-Id: I2dbd6f62170a7f62e5287d04a4ee6716b8786c26
Related: OS#5123
2021-05-10 12:50:34 +00:00
contrib attempt to fix RPM spec file after recent soversion bump 2021-02-24 10:54:32 +01:00
debian Bump version: 1.8.0.1-535e → 1.8.1 2021-02-24 10:56:17 +01:00
doc manual: Include QoS chapter and add osmo-mgw specific example 2021-04-29 21:26:15 +02:00
include mgw: Add support for setting socket priority from VTY 2021-04-29 21:25:33 +02:00
m4 move openbsc/* to repos root 2017-08-27 17:44:55 +02:00
src mgcp_network: fix implicit address loopback 2021-05-10 12:50:34 +00:00
tests tests: Replace deprecated API log_set_print_filename 2021-02-19 13:33:52 +01:00
.gitignore .gitignore: Ignore new autofoo tmp files 2021-02-04 12:50:27 +01:00
.gitreview .gitreview: update repo url to new location 2017-08-08 17:15:31 +02:00
.mailmap add .mailmap file for mapping git author name/mail in shortlog 2016-08-08 17:40:28 +00:00
AUTHORS move openbsc/* to repos root 2017-08-27 17:44:55 +02:00
COPYING move openbsc/* to repos root 2017-08-27 17:44:55 +02:00
Makefile.am manuals: generate vty reference xml at build time 2020-07-11 02:02:50 +00:00
README Remove libosmo-legacy-mgcp and osmo-bsc-mgcp 2018-09-06 20:39:53 +00:00
README.vty-tests move openbsc/* to repos root 2017-08-27 17:44:55 +02:00
TODO-RELEASE TOS bits != DSCP 2021-04-28 20:27:11 +02:00
configure.ac Bump version: 1.7.0.138-ace0b-dirty → 1.8.0 2021-02-23 18:28:45 +01:00
git-version-gen git-version-gen: Don't check for .git directory 2018-07-24 18:06:54 +02:00
libosmo-mgcp-client.pc.in separate libosmo-mgcp-client from mgcp server code 2017-09-05 20:56:27 +00:00
osmoappdesc.py osmoappdesc.py: switch to python 3 2019-12-11 09:35:24 +01:00

README

About OsmoMGW
=============

OsmoMGW originated from the OpenBSC project, which started as a minimalistic
all-in-one implementation of the GSM Network. In 2017, OpenBSC had reached
maturity and diversity (including M3UA SIGTRAN and 3G support in the form of
IuCS and IuPS interfaces) that naturally lead to a separation of the all-in-one
approach to fully independent separate programs as in typical GSM networks.

OsmoMGW was one of the parts split off from the old openbsc.git. It originated
as a solution to merely navigate RTP streams through a NAT, but has since
matured to a Media Gateway implementation that is capable of streaming RTP for
2G (AoIP) and 3G (IuCS) GSM networks as well as (still not implemented at time
of writing) transcoding between TRAU, various RTP payloads and IuUP.

The OsmoMGW program exposes an MGCP interface towards clients like OsmoMSC and
OsmoBSC, and receives and sends RTP streams as configured via MGCP.

The libosmo-mgcp-client library exposes utilities used by e.g. OsmoMSC (found
in osmo-msc.git) to instruct OsmoMGW via its MGCP service.

Find OsmoMGW issue tracker and wiki online at
https://osmocom.org/projects/osmo-mgw
https://osmocom.org/projects/osmo-mgw/wiki