Attention is currently required from: jolly, laforge, pespin.

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• File include/osmocom/sigtran/osmo_ss7.h:

  • Patch Set #3, Line 616: osmo_sccp_simple_client2(void *ctx, const char *name, uint32_t default_pc,

    Done

    Having done this, I can no longer get osmo-bsc to talk to osmo-stp using M3UA/TCP. AFAICS, osmo-bsc is actually using this API and since this API is assuming the default transport protocol (SCTP), something is definitely going wrong:

    ```
    DMSC NOTICE osmo_bsc_sigtran.c:648 Initializing SCCP connection for A/m3ua on cs7 instance 0
    DLSCCP NOTICE sccp_user.c:567 A-0-m3ua: Using SS7 instance 0, pc:0.23.3
    DLSCCP NOTICE sccp_user.c:585 A-0-m3ua: Using AS instance as-clnt-OsmoBSC-A
    DLSCCP NOTICE sccp_user.c:590 A-0-m3ua: Creating default route
    DLSS7 INFO osmo_ss7.c:781 0: Creating route: pc=0=0.0.0 mask=0x0 via AS 'as-clnt-OsmoBSC-A'
    DLSCCP NOTICE sccp_user.c:632 A-0-m3ua: No unassociated ASP for m3ua, creating new ASP asp-clnt-A-0-m3ua
    DLSS7 INFO osmo_ss7_as.c:110 0: as-as-clnt-OsmoBSC-A: Adding ASP asp-clnt-A-0-m3ua to AS
    DLGLOBAL ERROR osmo_ss7_as.c:118 Trying to dispatch event 17 to non-existent FSM instance!
    DLGLOBAL ERROR backtrace.c:42 backtrace() returned 9 addresses
    DLGLOBAL ERROR backtrace.c:53 /opt/osmocom/lib/libosmocore.so.21(_osmo_fsm_inst_dispatch+0x3a3) [0x7660c5671443]
    DLGLOBAL ERROR backtrace.c:53 /opt/osmocom/lib/libosmo-sigtran.so.9(osmo_ss7_as_add_asp+0x31e) [0x7660c57da45e]
    DLGLOBAL ERROR backtrace.c:53 /opt/osmocom/lib/libosmo-sigtran.so.9(osmo_sccp_simple_client_on_ss7_id+0x101a) [0x7660c58055ca]
    DLGLOBAL ERROR backtrace.c:53 ./src/osmo-bsc/osmo-bsc(+0x1ee30c) [0x5f63af78430c]
    DLGLOBAL ERROR backtrace.c:53 ./src/osmo-bsc/osmo-bsc(+0x25bb7) [0x5f63af5bbbb7]
    DLGLOBAL ERROR backtrace.c:53 /usr/lib/libc.so.6(+0x27cd0) [0x7660c5151cd0]
    DLGLOBAL ERROR backtrace.c:53 /usr/lib/libc.so.6(__libc_start_main+0x8a) [0x7660c5151d8a]
    DLGLOBAL ERROR backtrace.c:53 ./src/osmo-bsc/osmo-bsc(+0x25165) [0x5f63af5bb165]

    ```

    Note the `No unassociated ASP for m3ua, creating new ASP` line. This is despite I am using the following configuration in osmo-bsc.cfg:

    ```
    cs7 instance 0
     point-code 0.23.3
     asp asp-clnt-OsmoBSC-A 2905 0 m3ua tcp 
      remote-ip 127.0.0.1
      role asp 
      transport-role client
     as as-clnt-OsmoBSC-A m3ua
      asp asp-clnt-OsmoBSC-A
      routing-key 3 0.23.3
    ```

    Any input is welcome. I'll continue investigating this.

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