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SIP_Templates: Allow passing UserAgent field

This way it can be set to omit, since this field is not set by an IMS
core.

Change-Id: Ib1e3e66b8fe46ad2626b07193dfcaa594f26352e
---
M library/SIP_Templates.ttcn
1 file changed, 26 insertions(+), 7 deletions(-)

git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks refs/changes/96/36796/1

diff --git a/library/SIP_Templates.ttcn b/library/SIP_Templates.ttcn
index 9b3d188..0b5c9bf 100644
--- a/library/SIP_Templates.ttcn
+++ b/library/SIP_Templates.ttcn
@@ -242,6 +242,16 @@
 	optionsTags := optionsTags
 }
 
+// [20.41 RFC2616 14.43]
+template (value) UserAgent ts_UserAgent(template (value) ServerVal_List userAgentBody := {}) := {
+	fieldName := USER_AGENT_E,
+	userAgentBody := userAgentBody
+}
+template (present) UserAgent tr_UserAgent(template (present) ServerVal_List userAgentBody := ?) := {
+	fieldName := USER_AGENT_E,
+	userAgentBody := userAgentBody
+}
+
 
 template (value) SipAddr ts_SipAddr(template (value) HostPort host_port,
 				    template (omit) UserInfo user_info := omit,
@@ -541,6 +551,7 @@
 		template (omit) Security_client security_client := omit,
 		template (omit) Security_server security_server := omit,
 		template (omit) Supported supported := omit,
+		template (omit) UserAgent userAgent := ts_UserAgent({ "osmo-ttcn3-hacks/0.23" }),
 		template (omit) WwwAuthenticate wwwAuthenticate := omit
 	) modifies ts_SIP_msgHeader_empty := {
 	allow := allow,
@@ -571,12 +582,7 @@
 		addressField := to_addr.addr,
 		toParams := to_addr.params
 	},
-	userAgent := {
-		fieldName := USER_AGENT_E,
-		userAgentBody := {
-			"osmo-ttcn3-hacks/0.23"
-		}
-	},
+	userAgent := userAgent,
 	via := via,
 	wwwAuthenticate := wwwAuthenticate
 }
@@ -596,6 +602,7 @@
 		template Security_client security_client := *,
 		template Security_server security_server := *,
 		template Supported supported := *,
+		template UserAgent userAgent := *,
 		template WwwAuthenticate wwwAuthenticate := *
 		) modifies t_SIP_msgHeader_any := {
 	allow := allow,
@@ -625,7 +632,7 @@
 		addressField := to_addr.addr,
 		toParams := to_addr.params
 	},
-	userAgent := *,
+	userAgent := userAgent,
 	via := via,
 	wwwAuthenticate := wwwAuthenticate
 }

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