Hi Bogdan:
I did not use forward(), but I load sl module.
And I did use sl_send_reply() to reply
483 and 513 message and sl_reply_error().
The attached file is my openser config file.
I use this config file to run openser.
The under RFC3665 section 3.8 condition,
I got two Via headers as I mentioned before.
So, according to my config file,
Openser is a stateless proxy server under
RFC3665 section 3.8's condition?
Thank you.
Best Regards,
Fangyu Ling
----- Original Message -----
From: "Bogdan-Andrei Iancu" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>; <[email protected]>
Sent: Wednesday, July 04, 2007 2:53 PM
Subject: Re: [OpenSER-Users] The Via Header of CANCEL Message
> Hi Fangyu ,
>
> My opinion is that the RFC3665 does not cover the stateless part.
>
> OpenSER can be both a stateless ans stateful proxy, it is just a matter
> of configuration (what functions are you using). You can get pure
> stateless or stateful cfg, or a mixed one, depending of you.
>
> If you use the TM function for relaying and replying you will get a pure
> stateful proxy. For stateless functions, see the forward() or sl module.
>
> regards,
> bogdan
>
> fancy wrote:
>> Hi Bogdan:
>>
>> RFC3665 didn't mention any stateful or stateless
>> within all the document.
>> So I think it is just not covering it.
>>
>> By the way, is openser a stateless proxy server?
>> I think it is a stateful proxy server!
>> Can I config it to be a pure stateless or stateful proxy server?
>>
>> Thank you.
>>
>> Best Regards,
>> Fangyu Ling
>>
>>
>>
>>> Klaus,
>>>
>>> CANCEL is hop-by-hop only in stateful processing and in this case, yes,
>>> it has only on VIA. But if you have stateless processing, CANCEL is
>>> end-2-end and it will have multiple VIAs...
>>>
>>> Does 3665 obsoletes stateless SIP or it is just not covering it???
>>>
>>> regards,
>>> bogdan
>>>
>>> Klaus Darilion wrote:
>>>
>>>> Looks like it is defined clearly and openser is not 100% standard conform.
>>>>
>>>> regards
>>>> klaus
>>>>
>>>> fancy wrote:
>>>>
>>>>
>>>>> Hi Klaus:
>>>>> RFC 3665 page 54 line 4:
>>>>>
>> Sorry it's RFC 3261 page 54 line 4:
>>
>>>>> A CANCEL constructed by a
>>>>> client MUST have only a single Via header field value matching the
>>>>> top Via value in the request being cancelled.
>>>>>
>>>>> and RFC 3665 at page 53:
>>>>>
>> Sorry it's RFC 3261 at page 53:
>>
>>>>> CANCEL is referred to as a "hop-by-hop" request, since it is
>>>>> responded to at each stateful proxy hop.
>>>>>
>>>>> and RFC 3665 at page 21:
>>>>>
>> Sorry it's RFC 3261 at page 21:
>>
>>>>> Client: A client is any network element that sends SIP requests
>>>>> and receives SIP responses. Clients may or may not interact
>>>>> directly with a human user. User agent clients and proxies are
>>>>> clients.
>>>>>
>>>>> So, for my opinion, the role of proxy in this case of RFC 3665 section
>>>>> 3.8 is a client when it sends CANCEL message to Bob.
>>>>>
>>>>> If I misunderstand any RFC meanings, please correct me.
>>>>> Thank you very much.
>>>>>
>>>>> Best Regards,
>>>>> Fangyu Ling
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>> fancy wrote:
>>>>>>
>>>>>>
>>>>>>> According to RFC 3665 section 3.8 and RFC 3261 section 9,
>>>>>>> there is only one via header in CANCEL message
>>>>>>> (message F11, F13 at page 72 of RFC 3665).
>>>>>>>
>>>>>>>
>>>>>> Hi!
>>>>>>
>>>>>> I could find it in RFC 3665, but not in 3261. Where exactly in RFC 3261
>>>>>> is mentioned that the CANCEL has only 1 Via header?
>>>>>>
>>>>>> Further, the example has only one Via header - but I could not find any
>>>>>> definition if this is a MUST or not.
>>>>>>
>>>>>>
>>>>>>
>>>>>>> How can I remove the 2nd via header?
#
# $Id: openser.cfg 1827 2007-03-12 15:22:53Z bogdan_iancu $
#
# simple quick-start config script
# Please refer to the Core CookBook at http://www.openser.org/dokuwiki/doku.php
# for a explanation of possible statements, functions and parameters.
#
# ----------- global configuration parameters ------------------------
#debug=3 # debug level (cmd line: -dddddddddd)
#fork=yes
#log_stderror=no # (cmd line: -E)
#children=4
# Uncomment these lines to enter debugging mode
#fork=no
#log_stderror=yes
#
alias="under.test.com"
listen=192.0.50.50
port=5060
advertised_address="ss.under.test.com"
# ------------------ module loading ----------------------------------
#set module path
mpath="/usr/local/lib/openser/modules/"
# Uncomment this if you want to use SQL database
loadmodule "mysql.so"
loadmodule "sl.so"
loadmodule "tm.so"
loadmodule "rr.so"
loadmodule "maxfwd.so"
loadmodule "usrloc.so"
loadmodule "registrar.so"
loadmodule "textops.so"
loadmodule "mi_fifo.so"
loadmodule "options.so" # load by fancy, 2007/06/25
# Uncomment this if you want digest authentication
# mysql.so must be loaded !
loadmodule "auth.so"
loadmodule "auth_db.so"
# ----------------- setting module-specific parameters ---------------
# -- mi_fifo params --
modparam("mi_fifo", "fifo_name", "/tmp/openser_fifo")
# -- usrloc params --
#modparam("usrloc", "db_mode", 0)
# Uncomment this if you want to use SQL database
# for persistent storage and comment the previous line
modparam("usrloc", "db_mode", 2)
# -- auth params --
# Uncomment if you are using auth module
#
modparam("auth_db", "calculate_ha1", yes)
#
# If you set "calculate_ha1" parameter to yes (which true in this config),
# uncomment also the following parameter)
#
modparam("auth_db", "password_column", "password")
# -- rr params --
# add value to ;lr param to make some broken UAs happy
modparam("rr", "enable_full_lr", 1)
# added by fancy, 2007/06/25
modparam("options", "accept", "application/sdp")
modparam("options", "accept_encoding", "gzip")
modparam("options", "accept_language", "en")
modparam("options", "support", "timer")
# ------------------------- request routing logic -------------------
# main routing logic
route{
# initial sanity checks -- messages with
# max_forwards==0, or excessively long requests
if (!mf_process_maxfwd_header("10")) {
sl_send_reply("483","Too Many Hops");
exit;
};
if (msg:len >= 2048 ) {
sl_send_reply("513", "Message too big");
exit;
};
# we record-route all messages -- to make sure that
# subsequent messages will go through our proxy; that's
# particularly good if upstream and downstream entities
# use different transport protocol
# marked by fancy, 2007/05/31
# if (!method=="REGISTER")
record_route();
# subsequent messages withing a dialog should take the
# path determined by record-routing
if (loose_route()) {
# mark routing logic in request
append_hf("P-hint: rr-enforced\r\n");
route(1);
};
# if the request is for other domain use UsrLoc
# (in case, it does not work, use the following command
# with proper names and addresses in it)
# modified by fancy, 2007/05/25
#if (uri==myself) {
if (uri==myself || uri=~"reg.under.test.com" ||
uri=~"ss.under.test.com") {
if (method=="OPTIONS") {
options_reply();
};
if (method=="REGISTER") {
route(2);
};
lookup("aliases");
if (!uri==myself) {
append_hf("P-hint: outbound alias\r\n");
route(1);
};
# native SIP destinations are handled using our USRLOC DB
if (!lookup("location")) {
sl_send_reply("404", "Not Found");
exit;
};
append_hf("P-hint: usrloc applied\r\n");
};
# added by fancy, 2007/05/25
# force server to reply 407 message when it recieved INVITE message
########## for one proxy test ##########
if (!(method=="BYE") && (uri=~"under.test.com")) {
if (!proxy_authorize("under.test.com", "subscriber")) {
log(1,"proxy_authorize auto realm\n");
proxy_challenge("under.test.com", "1");
exit;
};
};
########################################
######### for Two Proxy Test ###########
if (!(method=="BYE") && !(uri=~"under.test.com")) {
if (!proxy_authorize( "","subscriber")) {
log(1,"proxy_authorize auto realm\n");
proxy_challenge( "", "1" );
exit;
};
};
########################################
# added by fancy
consume_credentials();
route(1);
}
route[1] {
# send it out now; use stateful forwarding as it works reliably
# even for UDP2TCP
# remove Proxy-Authorization from ACK
# added by fancy, 2007/06/08
remove_hf("Proxy-Authorization");
if (!t_relay()) {
sl_reply_error();
};
exit;
}
####################################################
# Registrar
# added by fancy, 2007/06/07
####################################################
route[2] {
# Uncomment this if you want to use digest authentication
#if (!www_authorize("openser.org", "subscriber")) {
# www_challenge("openser.org", "0");
if (!www_authorize("under.test.com", "subscriber")) {
www_challenge("under.test.com", "1");
exit;
};
# append date
# added by fancy, 2007/06/07
append_time();
save("location");
exit;
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