3GPP TS 25.414 5.1.3.3.1.6 specifies that IuUP can use RTP as transport.
The payload type is specified from 96-127, which shall be ignored on the
receiving end anyway.
The payload type number we use shall be 96 by default.
Change-Id: Ifd1210a897743396899f34457c96e6fd2109c6b3
Related: SYS#5152
Usually only one MGCP client per application is present. Then the log
lines from mgcp_client.c will be distinguishable without additional
information. When the application is using a pool of MGWs, then the
various MGCP Client instances become hard to distinguish.
- Add a possibility to set a description (name) for each MGW pool
member. When no description is set, use the domain name.
- Output the pool member name on each log line in mgcp_client.c
and mgcp_client_pool.c
Change-Id: I53ff5445c8e5faffa4ef908ffb1fdb1f47ea2904
Related: SYS#5091
The docstring in the VTY command that is used to remove MGCP client
instances lacks the NO_STR constant.
Change-Id: I53f3e763a77ed8be78c5a51b1472f4b70bade9d4
Related: SYS#5091
The interactive VTY commands to reconnect, block and unblock MGCP
clients from the pool are not displayed properly because the doctring
lacks the reference number.
Change-Id: I0367c33f5cd02978e3f14b1343dfaafa1ea62370
Related: SYS#5091
When the function mgcp_client_pool_vty_init is called with pool = NULL,
then it segfaults. Lets put an OSMO_ASSERT() on pool to make clear that
a pool must be present before initalizing the VTY on it.
Change-Id: I36893bf5341d4ad21161e92d2d25d284647f7d18
At the moment the MGCP Client only supports one MGW per application.
Depending on the requirements of the application one MGW might not offer
the performance needed. Lets add support for an MGCP Client pool that is
backward compatible to existing applications.
Change-Id: Icaaba0e470e916eefddfee750b83f5f65291a6b0
Related: SYS#5091
The function init_socket has an arbitrary retry count when opening the
socket. After each retry the local port is incremented by one. The
intention behind this is to find a useable local port in case the
configured port is used by another process.
The maximum number of retrys is hardcoded. The upcomming MGW pooling
patch requires to set the maximum retry count.
Change-Id: Ifd65511daa92fbe610f52da1c4c3b6a7c761d890
Related: SYS#5091
When the address is set to ANY, the address string is NULL. The log then
prints "(null)" where the address normaly would be. This looks odd, lets
print "(any)" instead.
Change-Id: I2ea138827ee5b9f40d352bf594364ee930520609
The vty always checks if global_mgcp_client_conf exists. (there is also
an assert This check about global_mgcp_client_ctx).
global_mgcp_client_ctx and global_mgcp_client_conf are populated before
the VTY commands are installed. Unleass the caller uses the API wrong
and calls mgcp_client_vty_init with NULL pointers there cannot be a
problem with unpopulated pointers. Lets remove the checks as they are
not needed.
Change-Id: I892d14c588573f76640453cb9c194594289b59f1
Related: SYS#5091
Depending on the usecase of osmo_mpcg_client it may be helpful to send a
DLCX to certain endpoints. Usually this would be a wildcarded endpoint
that resets the entire trunk to drop lingering RTP flows which may still
present after a restart/crash, but it might be also a group of specific
endpoints. The user may specify an arbitrary amount of endpoints where
the mgcp client will send a DLCX to. It does not matter if the endpoints
are wildcarded or not.
Change-Id: I47e7ff858d5067b46d52329be5f362ff61c0dff8
Related: SYS#5535
There is verbose debug logging on MGCP messages sent out to the MGW, but
none on received MGCP messages. Add Rx logging.
Related: SYS#5529
Change-Id: Id76230896aa87c1a12bd5ad87a62430c048a2873
To see state transitions and events on LMGCP DEBUG logging, actually set
the log_subsys of the mgcp_client_fsm.
Related: SYS#5529
Change-Id: I6e84d5f7b85752a7a54f17be1d074b01d1467f26
When the mgcp_client_endpoint_fsm terminates, do not directly pull each
conn FSM instance (mgcp_client_fsm) into oblivion as well. Those should
emit a DLCX and wait for the "OK" response before deallocating.
In programs using the mgcp client endpoint FSM (osmo-bsc, osmo-msc),
this gets rid of false LMGCP ERROR logging related to DLCX like this:
Cannot find matching MGCP transaction for trans_id 71998
Related: SYS#5529
Change-Id: I8fbfec5533e9be9cc7ea550df1e6639a0a215973
Upon mgcp_conn_delete(), we unparent the FSM instance. Instead of
setting the talloc ctx to NULL, place the deleting conn under the
struct mgcp_client talloc ctx.
Related: SYS#5529
Change-Id: Ia12749e0d7d520f24a967c2df9a4651267e1019e
The functions add_lco and add_sdp assert when the codec string can not
be generated. This is the case when an unexpected codec is addressed in
the input parameter mgcp_msg for mgcp_msg_gen(). Even though the API
user is expected only to use the codec identifiers in mgcp_client.h the
check should not be done with an assert. Instead mgcp_msg_gen() should
just return NULL imediately.
Also all generation functions should not use magic numbers as return
codes. Instead constants from errno.h should be used. It is also
problematic that the return codes from msgb_printf are added up.
Depending. It makes more sense to use an OR operator since msgb_printf
only returns 0 or -EINVAL, so the end result will be -EINVAL if one or
more msgb_printf fail and not just a random negative value.
Change-Id: Ibb788343e0bec9c0eaf33e6e4727d4d36c100017
Related: OS#5119
So far an mgcp_client user can get the RTP address+port information that
the MGW has returned upon a CRCX. Add this function to return the other
RTP end, i.e. address+port that the MGW was told to send RTP to.
This will be used to fix the MGCP in osmo-bsc, which so far mixes up the
two RTP ends and compares the MSC's RTP address+port with the MGW's one
and hence fails to skip unnecessary MDCX.
Change-Id: Ibb488925827d9dc0ccb1f8d6d84728745d086793
Sending a DLCX upon FSM cleanup is not unusual. Move the log about that
DLCX to INFO, and also print the endpoint and conn identifier.
Change-Id: Id723d949f101b66fb75296d01489d9dac350c7c8
If the mgcp_client_fsm gets terminated in ST_DLCX_RESP, it has already
sent a DLCX to the MGW. So do not send a second one.
I noticed the duplicate DLCX for the same endpoint conn identifier while
running TTCN3 tests and watching the network trace of test teardown.
Change-Id: I35e415f67946b73c74408afe265618cfe4f72b0b
The error message: "abrupt FSM termination with connections still
present, sending unconditional DLCX..." implies a more serious problem
than in actually is. Even when connections are present on the
mgcp_client_fsm while it terminates, normal operation is still possible.
Lets change the loglevel to NOTICE and remove the "aprupt" from the
phrase.
Change-Id: I9749c024e208835bd4188bace13f723008de54c8
Related: SYS#5082
libosmo-mgcp-client looks up this timer in a caller provided osmo_tdef
definition. So far, all of our libosmo-mgcp-client callers do not configure
such a timer, so that we always use the default timer value.
We have introduced X timers (negative numbers) to indicate Osmocom specific
timers, and reserve T timers for 3GPP specified ones. So now is still a good
chance to move this timer to the Osmocom X realm.
Remove a comment about this timer at an unrelated place. It is still described
at osmo_mgcpc_ep_alloc().
Change-Id: If097f52701fd81f29bcca1d252f4fb4fca8a04f7
This is needed in case MGW changes the local IP address (for instance
because it initlaly offered an IPv4 address, and a client submitted a
remote IPv6 address, so MGW needs then to offer a local IPv6 address for
the RTP connection to be possible).
Change-Id: Ie964412b81fe6e10914790baaea724ca5f772adc
The API and related implementation fields are not used internally nor
externally, and only support IPv4. Let's simply deprecate the API and
drop all the uneeded implementation.
Change-Id: I905d4c4efabb6b4a4bc5c02e956808777243cadc
Existing mgcp_client_test code required the '.' to trigger the same code
path, since with this commit we do extra checks and without a dot the
address is not accepted as IPv4 by osmo_ip_str_type().
Change-Id: I936bf57d37f5f0607dfe7fc66c37e424c3793f9b
This problem was noticed while running several LCLS test cases from
ttcn3-bsc-test. Every test case makes osmo-bsc leak at least two
chunks named 'struct mgcp_response_pending'.
Here is the related osmo-bsc output with additional debug messages:
DRLL ERROR mgcp_client_fsm.c:525 MGCP_CONN(to-MSC)[0x612000016120]{ST_READY}:
MGW/DLCX: abrupt FSM termination with connections still present,
sending unconditional DLCX...
DLMGCP DEBUG mgcp_client.c:1010 mgcp_client_next_trans_id(id=35): new trans ID
DLMGCP DEBUG mgcp_client.c:918 mgcp_client_pending_add(id=35): allocated and queued
DLMGCP DEBUG mgcp_client.c:962 Queued 53 bytes for MGCP GW
DLMGCP DEBUG mgcp_client.c:725 Tx MGCP: r=127.0.0.1:2427<->l=127.0.0.1:2727:
len=53 'DLCX 35 rtpbridge/1@mgw MGCP 1.0\r\nC: 5\r\nI:'...
DLMGCP ERROR mgcp_client.c:704 Failed to read: r=127.0.0.1:2427<->l=127.0.0.1:2727:
111='Connection refused'
The MGCP client FSM enqueues a DLCX from its fsm_cleanup_cb(), and
terminates. Thus if the remote MGCP peer becomes unavailable (e.g.
due to a network failure), we would never get a response, and since
the FSM is already terminated, nobody would pop and free() the
response handler from the queue (mgcp->responses_pending).
As a simple workaround, let's avoid allocating dummy entries of
'struct mgcp_response_pending' without a response handler. The
only case where an MGCP message is sent without a handler is
exactly during the FSM termination.
Change-Id: I83938ff47fa8570b8d9dc810a184864a0c0b58aa
Related: OS#4619
mgcp_client.h offers functions to generate endpoint names for wildcarded
request. This is used in osmo-bsc, lets now also add a function that can
generate e1-endpoint names.
Change-Id: Iec35b5bae8a7b07ddb3559f7114a24dcd10e8f14
Related: OS#2547
Vadim Yanitskiy
Pau Espin
Philipp Maier
Oliver Smith
Neels Hofmeyr
Harald Welte