Hello,
The BYE, generated by Kamailio in case of dialog
timeout,
is malformed:
BYE sip:anonymous@192.168.225.2:50601
SIP/2.0
Via:
SIP/2.0/UDP
172.16.60.113;branch=z9hG4bK77b6.941684b6.0
Via:
SIP/2.0/UDP
10.1.1.10;branch=z9hG4bKsr-JfymiMenCtp4urS5CXSnCHJnCXJZiHvRCHYJb6ggNPN9NVDL3-TWhdW0UvOfN1KPTReRiHy1CHmcs6mZiHS*
To:
sip:anonymous;cpc=ordinary@192.168.225.2;tag=01e3a8c0-c1c2-t-1
From: sip:1255010006@192.168.225.2:5060;user=phone;tag=813142547-1366730270587
CSeq:
465332801 BYE
Call-ID: 1aebb42c-01e3a8c0-000007c2@192.168.225.2
Content-Length:
0
User-Agent:
kamailio (3.3.2
(x86_64/linux))
Max-Forwards:
69
The bad syntax is located in the “To” header
field.
According to the RFC 3261 section 25.1, the
grammar of the To header
field is as follow:
To =
( "To" / "t" ) HCOLON ( name-addr
/ addr-spec ) *( SEMI to-param )
name-addr = [
display-name ] LAQUOT addr-spec
RAQUOT
addr-spec = SIP-URI
/ SIPS-URI / absoluteURI
to-param =
tag-param / generic-param
The RFC 3261 section 20.10 explains that:
Even if the
"display-name" is
empty, the "name-addr" form MUST be
used if the
"addr-spec"
contains a comma, semicolon, or question
mark. There may
or may not be LWS
between the display-name and the
"<".
As the “addr-spec” sip:anonymous;cpc=ordinary@192.168.225.2
contains a semicolon, it means that the “name-addr” form
must be
used. The “To” header field should be encoded as follow:
To: <sip:anonymous;cpc=ordinary@192.168.225.2>;tag=01e3a8c0-c1c2-t-1
BR,
Julia