Send Via based on SIPFILE instead of autogeneated

-i option prevents Via from being generated.
Now we generate it in SIPFILE. This prevents
hostname looking for the Via header and we can
use [% sip_int_ips.0 %] for it

BRANCH for the Via header is autogenerated by UUIDGEN command

-l 5081 forces the source port for sending requests to be that one

-S forces symetric mode and makes Sipsak listen in the same 5081 port

vmnotify

@@ -77,7 +77,8 @@ BODY_VM="Voice-Message: $NEW/$OLD"
 BODYLEN=$((${#BODY_MW}+2+${#BODY_VM}+2))
 CALL_ID=$($UUIDGEN)@voip.sipwise.local
 MBID=$USER
+BRANCH=$($UUIDGEN)
 
-$SIPSAK -f $SIPFILE \
-	-G -g "!BODY_MW!$BODY_MW!BODY_VM!$BODY_VM!BODYLEN!$BODYLEN!CALL_ID!$CALL_ID!MBID!$MBID!" \
+$SIPSAK -f -i -l 5081 -S $SIPFILE \
+	-G -g "!BODY_MW!$BODY_MW!BODY_VM!$BODY_VM!BODYLEN!$BODYLEN!CALL_ID!$CALL_ID!MBID!$MBID!BRANCH!$BRANCH!" \
 	$VERBOSE -E udp -s $URI