<p>Neels Hofmeyr has uploaded this change for <strong>review</strong>.</p><p><a href="https://gerrit.osmocom.org/13191">View Change</a></p><pre style="font-family: monospace,monospace; white-space: pre-wrap;">msc: for mo and mt call, interleave MGCP and Assignment<br><br>Upcoming osmo-msc changes move away from the current ordering of MGCP and<br>Assignment messages. Allow these async dialogs to appear in any order.<br><br>Change-Id: Ia06af1e347601949f4ddb19f963daa400766d9e7<br>---<br>M msc/BSC_ConnectionHandler.ttcn<br>1 file changed, 43 insertions(+), 35 deletions(-)<br><br></pre><pre style="font-family: monospace,monospace; white-space: pre-wrap;">git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks refs/changes/91/13191/1</pre><pre style="font-family: monospace,monospace; white-space: pre-wrap;"><span>diff --git a/msc/BSC_ConnectionHandler.ttcn b/msc/BSC_ConnectionHandler.ttcn</span><br><span>index e6cf2b0..90cdf25 100644</span><br><span>--- a/msc/BSC_ConnectionHandler.ttcn</span><br><span>+++ b/msc/BSC_ConnectionHandler.ttcn</span><br><span>@@ -513,31 +513,37 @@</span><br><span> f_mgcp_par_append(mgcp_resp.params, ts_MgcpParSpecEP(cpars.mgcp_ep));</span><br><span> MGCP.send(mgcp_resp);</span><br><span> }</span><br><span style="color: hsl(0, 100%, 40%);">- /* Second MGCP CRCX (this time for MSS/CN side) */</span><br><span style="color: hsl(0, 100%, 40%);">- MGCP.receive(tr_CRCX(cpars.mgcp_ep)) -> value mgcp_cmd {</span><br><span style="color: hsl(0, 100%, 40%);">- var SDP_Message sdp := valueof(ts_SDP(cpars.mgw_rtp_ip_mss, cpars.mgw_rtp_ip_mss,</span><br><span style="color: hsl(0, 100%, 40%);">- hex2str(cpars.mgcp_call_id), "42",</span><br><span style="color: hsl(0, 100%, 40%);">- cpars.mgw_rtp_port_mss,</span><br><span style="color: hsl(0, 100%, 40%);">- { int2str(cpars.rtp_payload_type) },</span><br><span style="color: hsl(0, 100%, 40%);">- { valueof(ts_SDP_rtpmap(cpars.rtp_payload_type,</span><br><span style="color: hsl(0, 100%, 40%);">- cpars.rtp_sdp_format)),</span><br><span style="color: hsl(0, 100%, 40%);">- valueof(ts_SDP_ptime(20)) }));</span><br><span style="color: hsl(0, 100%, 40%);">- MGCP.send(ts_CRCX_ACK(mgcp_cmd.line.trans_id, cpars.mgcp_connection_id_mss, sdp));</span><br><span style="color: hsl(0, 100%, 40%);">- /* MSC acknowledges the MNCC_CREATE to the MNCC handler */</span><br><span style="color: hsl(0, 100%, 40%);">- MNCC.receive(tr_MNCC_RTP_CREATE(cpars.mncc_callref));</span><br><span style="color: hsl(0, 100%, 40%);">- }</span><br><span> </span><br><span style="color: hsl(0, 100%, 40%);">- /* expect the MSC to trigger a BSSMAP ASSIGNMENT */</span><br><span> var BSSMAP_IE_AoIP_TransportLayerAddress tla_ass :=</span><br><span> valueof(ts_BSSMAP_IE_AoIP_TLA4(f_inet_addr(cpars.mgw_rtp_ip_bss),cpars.mgw_rtp_port_bss));</span><br><span style="color: hsl(0, 100%, 40%);">- BSSAP.receive(tr_BSSMAP_AssignmentReq(omit, tla_ass)) {</span><br><span style="color: hsl(0, 100%, 40%);">- var BSSMAP_IE_AoIP_TransportLayerAddress tla;</span><br><span style="color: hsl(0, 100%, 40%);">- var BSSMAP_IE_SpeechCodec codec;</span><br><span style="color: hsl(0, 100%, 40%);">- tla := valueof(ts_BSSMAP_IE_AoIP_TLA4(f_inet_addr(cpars.bss_rtp_ip), cpars.bss_rtp_port));</span><br><span style="color: hsl(0, 100%, 40%);">- codec := valueof(ts_BSSMAP_IE_SpeechCodec({ts_CodecFR}));</span><br><span style="color: hsl(0, 100%, 40%);">- BSSAP.send(ts_BSSMAP_AssignmentComplete(omit, tla, codec));</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ interleave {</span><br><span style="color: hsl(120, 100%, 40%);">+ /* Second MGCP CRCX (this time for MSS/CN side) */</span><br><span style="color: hsl(120, 100%, 40%);">+ [] MGCP.receive(tr_CRCX(cpars.mgcp_ep)) -> value mgcp_cmd {</span><br><span style="color: hsl(120, 100%, 40%);">+ var SDP_Message sdp := valueof(ts_SDP(cpars.mgw_rtp_ip_mss, cpars.mgw_rtp_ip_mss,</span><br><span style="color: hsl(120, 100%, 40%);">+ hex2str(cpars.mgcp_call_id), "42",</span><br><span style="color: hsl(120, 100%, 40%);">+ cpars.mgw_rtp_port_mss,</span><br><span style="color: hsl(120, 100%, 40%);">+ { int2str(cpars.rtp_payload_type) },</span><br><span style="color: hsl(120, 100%, 40%);">+ { valueof(ts_SDP_rtpmap(cpars.rtp_payload_type,</span><br><span style="color: hsl(120, 100%, 40%);">+ cpars.rtp_sdp_format)),</span><br><span style="color: hsl(120, 100%, 40%);">+ valueof(ts_SDP_ptime(20)) }));</span><br><span style="color: hsl(120, 100%, 40%);">+ MGCP.send(ts_CRCX_ACK(mgcp_cmd.line.trans_id, cpars.mgcp_connection_id_mss, sdp));</span><br><span style="color: hsl(120, 100%, 40%);">+ /* MSC acknowledges the MNCC_CREATE to the MNCC handler */</span><br><span style="color: hsl(120, 100%, 40%);">+ MNCC.receive(tr_MNCC_RTP_CREATE(cpars.mncc_callref));</span><br><span> }</span><br><span> </span><br><span style="color: hsl(120, 100%, 40%);">+ /* expect the MSC to trigger a BSSMAP ASSIGNMENT */</span><br><span style="color: hsl(120, 100%, 40%);">+ [] BSSAP.receive(tr_BSSMAP_AssignmentReq(omit, tla_ass)) {</span><br><span style="color: hsl(120, 100%, 40%);">+ var BSSMAP_IE_AoIP_TransportLayerAddress tla;</span><br><span style="color: hsl(120, 100%, 40%);">+ var BSSMAP_IE_SpeechCodec codec;</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ tla := valueof(ts_BSSMAP_IE_AoIP_TLA4(f_inet_addr(cpars.bss_rtp_ip), cpars.bss_rtp_port));</span><br><span style="color: hsl(120, 100%, 40%);">+ codec := valueof(ts_BSSMAP_IE_SpeechCodec({ts_CodecFR}));</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ BSSAP.send(ts_BSSMAP_AssignmentComplete(omit, tla, codec));</span><br><span style="color: hsl(120, 100%, 40%);">+ }</span><br><span style="color: hsl(120, 100%, 40%);">+ }</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span> /* MS -> MSC: ALERTING */</span><br><span> BSSAP.send(ts_PDU_DTAP_MO(ts_ML3_MO_CC_CONNECT(cpars.transaction_id)));</span><br><span> MNCC.receive(tr_MNCC_SETUP_cnf(cpars.mncc_callref));</span><br><span>@@ -613,25 +619,27 @@</span><br><span> MGCP.send(mgcp_resp);</span><br><span> }</span><br><span> }</span><br><span style="color: hsl(0, 100%, 40%);">- /* Second MGCP CRCX (this time for MSS/CN side) */</span><br><span style="color: hsl(0, 100%, 40%);">- MGCP.receive(tr_CRCX(cpars.mgcp_ep)) -> value mgcp_cmd {</span><br><span style="color: hsl(0, 100%, 40%);">- var SDP_Message sdp := valueof(ts_SDP(cpars.mgw_rtp_ip_mss, cpars.mgw_rtp_ip_mss,</span><br><span style="color: hsl(0, 100%, 40%);">- hex2str(cpars.mgcp_call_id), "42",</span><br><span style="color: hsl(0, 100%, 40%);">- cpars.mgw_rtp_port_mss,</span><br><span style="color: hsl(0, 100%, 40%);">- { int2str(cpars.rtp_payload_type) },</span><br><span style="color: hsl(0, 100%, 40%);">- { valueof(ts_SDP_rtpmap(cpars.rtp_payload_type,</span><br><span style="color: hsl(0, 100%, 40%);">- cpars.rtp_sdp_format)),</span><br><span style="color: hsl(0, 100%, 40%);">- valueof(ts_SDP_ptime(20)) }));</span><br><span style="color: hsl(0, 100%, 40%);">- MGCP.send(ts_CRCX_ACK(mgcp_cmd.line.trans_id, cpars.mgcp_connection_id_mss, sdp));</span><br><span style="color: hsl(0, 100%, 40%);">- }</span><br><span style="color: hsl(0, 100%, 40%);">-</span><br><span style="color: hsl(0, 100%, 40%);">- /* Alerting */</span><br><span style="color: hsl(0, 100%, 40%);">- MNCC.send(ts_MNCC_ALERT_req(cpars.mncc_callref));</span><br><span> </span><br><span> var BSSMAP_IE_AoIP_TransportLayerAddress tla_ass :=</span><br><span> valueof(ts_BSSMAP_IE_AoIP_TLA4(f_inet_addr(cpars.mgw_rtp_ip_bss),cpars.mgw_rtp_port_bss));</span><br><span> interleave {</span><br><span style="color: hsl(0, 100%, 40%);">- [] BSSAP.receive(tr_PDU_DTAP_MT(tr_ML3_MT_CC_ALERTING(cpars.transaction_id))) {}</span><br><span style="color: hsl(120, 100%, 40%);">+ /* Second MGCP CRCX (this time for MSS/CN side) */</span><br><span style="color: hsl(120, 100%, 40%);">+ [] MGCP.receive(tr_CRCX(cpars.mgcp_ep)) -> value mgcp_cmd {</span><br><span style="color: hsl(120, 100%, 40%);">+ var SDP_Message sdp := valueof(ts_SDP(cpars.mgw_rtp_ip_mss, cpars.mgw_rtp_ip_mss,</span><br><span style="color: hsl(120, 100%, 40%);">+ hex2str(cpars.mgcp_call_id), "42",</span><br><span style="color: hsl(120, 100%, 40%);">+ cpars.mgw_rtp_port_mss,</span><br><span style="color: hsl(120, 100%, 40%);">+ { int2str(cpars.rtp_payload_type) },</span><br><span style="color: hsl(120, 100%, 40%);">+ { valueof(ts_SDP_rtpmap(cpars.rtp_payload_type,</span><br><span style="color: hsl(120, 100%, 40%);">+ cpars.rtp_sdp_format)),</span><br><span style="color: hsl(120, 100%, 40%);">+ valueof(ts_SDP_ptime(20)) }));</span><br><span style="color: hsl(120, 100%, 40%);">+ MGCP.send(ts_CRCX_ACK(mgcp_cmd.line.trans_id, cpars.mgcp_connection_id_mss, sdp));</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ /* Alerting */</span><br><span style="color: hsl(120, 100%, 40%);">+ MNCC.send(ts_MNCC_ALERT_req(cpars.mncc_callref));</span><br><span style="color: hsl(120, 100%, 40%);">+ }</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ [] BSSAP.receive(tr_PDU_DTAP_MT(tr_ML3_MT_CC_ALERTING(cpars.transaction_id))) {</span><br><span style="color: hsl(120, 100%, 40%);">+ }</span><br><span> /* expect AoIP IP/Port to match what we returned in CRCX_ACK above */</span><br><span> [] BSSAP.receive(tr_BSSMAP_AssignmentReq(omit, tla_ass)) {</span><br><span> var BSSMAP_IE_AoIP_TransportLayerAddress tla;</span><br><span></span><br></pre><p>To view, visit <a href="https://gerrit.osmocom.org/13191">change 13191</a>. 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<div style="display:none"> Gerrit-Project: osmo-ttcn3-hacks </div>
<div style="display:none"> Gerrit-Branch: master </div>
<div style="display:none"> Gerrit-MessageType: newchange </div>
<div style="display:none"> Gerrit-Change-Id: Ia06af1e347601949f4ddb19f963daa400766d9e7 </div>
<div style="display:none"> Gerrit-Change-Number: 13191 </div>
<div style="display:none"> Gerrit-PatchSet: 1 </div>
<div style="display:none"> Gerrit-Owner: Neels Hofmeyr <nhofmeyr@sysmocom.de> </div>