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SIP_Templates: Allow setting transport in Via templates

This is needed when using IMS, since TCP is used.

Change-Id: Id45491615bcb5c074ef4fc298cbb24b2e034972d
---
M asterisk/SIP_ConnectionHandler.ttcn
M library/SIP_Templates.ttcn
2 files changed, 17 insertions(+), 3 deletions(-)

git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks refs/changes/80/36780/1

diff --git a/asterisk/SIP_ConnectionHandler.ttcn b/asterisk/SIP_ConnectionHandler.ttcn
index 13b5f04..9c7cca5 100644
--- a/asterisk/SIP_ConnectionHandler.ttcn
+++ b/asterisk/SIP_ConnectionHandler.ttcn
@@ -178,6 +178,7 @@
 		{ id := "received", paramValue := g_pars.remote_sip_host }
 	}; */
 	return 	tr_Via_from(via_req.viaBody[0].sentBy,
+			    via_req.viaBody[0].sentProtocol.transport,
 			    via_resp_params);
 }
 
diff --git a/library/SIP_Templates.ttcn b/library/SIP_Templates.ttcn
index 3492dc4..e22646c 100644
--- a/library/SIP_Templates.ttcn
+++ b/library/SIP_Templates.ttcn
@@ -372,22 +372,24 @@
 	mediaType := "application/sdp"
 };
 
-template (value) Via ts_Via_from(template (value) HostPort addr) := {
+template (value) Via ts_Via_from(template (value) HostPort addr,
+				 template (value) charstring transport := "UDP") := {
 	fieldName := VIA_E,
 	viaBody := {
 		{
-			sentProtocol := { "SIP", "2.0", "UDP" },
+			sentProtocol := { "SIP", "2.0", transport },
 			sentBy := addr,
 			viaParams := omit
 		}
 	}
 }
 template (present) Via tr_Via_from(template (present) HostPort host_port := ?,
+				   template (present) charstring transport := ?,
 				   template SemicolonParam_List viaParams := *) := {
 	fieldName := VIA_E,
 	viaBody := {
 		{
-			sentProtocol := { "SIP", "2.0", "UDP" },
+			sentProtocol := { "SIP", "2.0", ? },
 			sentBy := host_port,
 			viaParams := viaParams
 		}

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