[Serusers] problem in forwarding one proxy to another proxy

2 Sep 2004


      hello friends
i have two ser proxies
*.*.*.18 -- number is 36105
*.*.*.19 -- number is 214103
iam forwarding from *.*.*.19 to *.*.*.18 with
iam using the xlite as my user agents but when i try
to
call from 214103 to 36105 for few seconds it says it s
trying but afterwards it says it user not found
ser.cfg of *.*.*.19 is as follows
*******************************************************
# $Id: nathelper.cfg,v 1.1.2.1 2003/11/24 14:47:18
janakj Exp $
#
# simple quick-start config script including nathelper
support
# This default script includes nathelper support. To
make it work
# you will also have to install Maxim's RTP proxy. The
proxy is enforced
# if one of the parties is behind a NAT.
#
# If you have an endpoing in the public internet which
is known to
# support symmetric RTP (Cisco PSTN gateway or
voicemail, for example),
# then you don't have to force RTP proxy. If you don't
want to enforce
# RTP proxy for some destinations than simply use
t_relay() instead of
# route(1)
#
# Sections marked with !! Nathelper contain
modifications for nathelper
#
# NOTE !! This config is EXPERIMENTAL !
#
# ----------- global configuration parameters
------------------------
debug=8                 # debug level (cmd line:
-dddddddddd)
fork=yes
log_stderror=yes        # (cmd line: -E)
check_via=no    # (cmd. line: -v)
dns=no           # (cmd. line: -r)
rev_dns=no      # (cmd. line: -R)
port=5060
children=4
fifo="/tmp/ser_fifo"
# ------------------ module loading
----------------------------------
# Uncomment this if you want to use SQL database
#loadmodule "/usr/local/lib/ser/modules/mysql.so"
loadmodule "/usr/local/lib/ser/modules/sl.so"
loadmodule "/usr/local/lib/ser/modules/tm.so"
loadmodule "/usr/local/lib/ser/modules/rr.so"
loadmodule "/usr/local/lib/ser/modules/maxfwd.so"
loadmodule "/usr/local/lib/ser/modules/usrloc.so"
loadmodule "/usr/local/lib/ser/modules/registrar.so"
loadmodule "/usr/local/lib/ser/modules/textops.so"
# Uncomment this if you want digest authentication
# mysql.so must be loaded !
#loadmodule "/usr/local/lib/ser/modules/auth.so"
#loadmodule "/usr/local/lib/ser/modules/auth_db.so"
# !! Nathelper
loadmodule "/usr/local/lib/ser/modules/nathelper.so"
# ----------------- setting module-specific parameters
---------------
# -- 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)
# !! Nathelper
modparam("registrar", "nat_flag", 6)
modparam("nathelper", "natping_interval", 30) # Ping
interval 30 s
modparam("nathelper", "ping_nated_only", 1)   # Ping
only clients behind NAT
# -------------------------  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");
                break;
        };
        if (msg:len >=  max_len ) {
                sl_send_reply("513", "Message too
big");
                break;
        };
# !! Nathelper
        # Special handling for NATed clients; first,
NAT test is
        # executed: it looks for via!=received and
RFC1918 addresses
        # in Contact (may fail if line-folding is
used); also,
        # the received test should, if completed,
should check all
        # vias for rpesence of received
        if (nat_uac_test("3")) {
                # Allow RR-ed requests, as these may
indicate that
                # a NAT-enabled proxy takes care of
it; unless it is
                # a REGISTER
if (method == "REGISTER" || !
search("^Record-Route:")) {
                    log("LOG: Someone trying to
register from private IP, rewriting\n");
# This will work only for user
agents that support symmetric
                    # communication. We tested quite
many of them and majority is
                    # smart enough to be symmetric. In
some phones it takes a configuration
                    # option. With Cisco 7960, it is
called NAT_Enable=Yes, with kphone it is
                    # called "symmetric media" and
"symmetric signalling".
fix_nated_contact(); # Rewrite
contact with source IP of signalling
                    if (method == "INVITE") {
                        fix_nated_sdp("1"); # Add
direction=active to SDP
                    };
                    force_rport(); # Add rport
parameter to topmost Via
                    setflag(6);    # Mark as NATed
                };
        };
# 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
        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);
                break;
        };
if (!uri==myself) {
                # mark routing logic in request
                append_hf("P-hint: outbound\r\n");
                route(1);
                break;
        };
# 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)
        if (uri==myself) {
if (method=="REGISTER") {
                        log("********************* in
the registration***************");
                        save("location");
                        break;
                };
lookup("aliases");
                if (!uri==myself) {
                        append_hf("P-hint: outbound
alias\r\n");
                        route(1);
                        break;
                };
if(uri=~"^sip:3.*@")
                        {
                        log("***********************in
forward***********************");
forward(*.*.*.18,5060);
                                break;
                        }
                        else
                        {
                         if (!lookup("location"))
                                {
                                sl_send_reply("404",
"Not Found");
                                break;
                                }
                        forward(uri:host,uri:port);
                        }
        };
        append_hf("P-hint: usrloc applied\r\n");
        route(1);
}
route[1]
{
        # !! Nathelper
        if
(uri=~"[@:](192.168.|10.|172.(1[6-9]|2[0-9]|3[0-1]).)"
&& !search("^Route:")){
            sl_send_reply("479", "We don't forward to
private IP addresses");
            break;
        };
# if client or server know to be behind a NAT,
enable relay
        if (isflagset(6)) {
            force_rtp_proxy();
        };
# NAT processing of replies; apply to all
transactions (for example,
        # re-INVITEs from public to private UA are
hard to identify as
        # NATed at the moment of request processing);
look at replies
        t_on_reply("1");
# send it out now; use stateful forwarding as
it works reliably
        # even for UDP2TCP
        if (!t_relay()) {
                sl_reply_error();
        };
}
# !! Nathelper
onreply_route[1] {
    # NATed transaction ?
    if (isflagset(6) && status =~ "(183)|2[0-9][0-9]")
{
        fix_nated_contact();
        force_rtp_proxy();
    # otherwise, is it a transaction behind a NAT and
we did not
    # know at time of request processing ? (RFC1918
contacts)
    } else if (nat_uac_test("1")) {
        fix_nated_contact();
    };
}
*******************************************************
in my *.*.*.19 terminal i got this type of
messages
*******************************************************
8(12167) ***********************in
forward*********************** 8(12167)
check_via_address(*.*.*.81, *.*.*.81, 0)
 8(12167) Sending:
ACK sip:36105@*.*.*.in SIP/2.0
Record-Route:
sip:36105@*.*.*.19;ftag=3583624574;lr=on
Via: SIP/2.0/UDP *.*.*.19;branch=0
Via: SIP/2.0/UDP
*.*.*.81:5060;rport=5060;branch=z9hG4bK5D01004E4BDF4856A07BEA7C1D0EC3D5
From: rama sip:214103@*.*.*.in;tag=3583624574
To:
sip:36105@*.*.*.in;tag=a6a1c5f60faecf035a1ae5b6e96e979a-de09
Contact: sip:214103@*.*.*.81:5060
Call-ID: C8ECA493-3AE1-4173-94AE-E33AFA5F0F93@*.*.*.81
CSeq: 48216 ACK
Max-Forwards: 69
Content-Length: 0
.
 8(12167) orig. len=425, new_len=534, proto=1
 8(12167) receive_msg: cleaning up
 8(12167) SIP Request:
 8(12167)  method:  <ACK>
 8(12167)  uri:     sip:36105@*.*.*.in
 8(12167)  version: <SIP/2.0>
 8(12167) parse_headers: flags=1
 8(12167) Found param type 235, <rport> = <n/a>;
state=6
 8(12167) Found param type 232, <branch> =
<z9hG4bK5D01004E4BDF4856A07BEA7C1D0EC3D5>; state=16
 8(12167) end of header reached, state=5
 8(12167) parse_headers: Via found, flags=1
 8(12167) parse_headers: this is the first via
 8(12167) After parse_msg...
 8(12167) preparing to run routing scripts...
 8(12167) DEBUG : sl_filter_ACK: to late to be a local
ACK!
 8(12167) DEBUG : is_maxfwd_present: searching for
max_forwards header
 8(12167) parse_headers: flags=128
 8(12167) DEBUG: add_param:
tag=a6a1c5f60faecf035a1ae5b6e96e979a-de09
 8(12167) end of header reached, state=29
 8(12167) DEBUG: get_hdr_field: <To> [73];
uri=[sip:36105@*.*.*.in]
 8(12167) DEBUG: to body [sip:36105@*.*.*.in]
 8(12167) get_hdr_field: cseq <CSeq>: <48216> <ACK>
 8(12167) DEBUG: is_maxfwd_present: value = 70
 8(12167) check_via_address(*.*.*.81, *.*.*.81, 0)
 8(12167) DEBUG: add_param: tag=3583624574
 8(12167) end of header reached, state=29
 8(12167) parse_headers: flags=256
 8(12167) DEBUG: get_hdr_body : content_length=0
 8(12167) found end of header
 8(12167) find_first_route(): No Route headers found
 8(12167) loose_route(): There is no Route HF
 8(12167) check_self - checking if host==us: 17==9 && 
[*.*.*.in] == [127.0.0.1]
 8(12167) check_self - checking if port 5060 matches
port 5060
 8(12167) check_self - checking if host==us: 17==13 &&
 [*.*.*.in] == [*.*.*.19]
 8(12167) check_self - checking if port 5060 matches
port 5060
 8(12167) check_self - checking if host==us: 17==9 && 
[*.*.*.in] == [127.0.0.1]
 8(12167) check_self - checking if port 5060 matches
port 5060
 8(12167) check_self - checking if host==us: 17==13 &&
 [*.*.*.in] == [*.*.*.19]
 8(12167) check_self - checking if port 5060 matches
port 5060
 8(12167) lookup(): '36105' Not found in usrloc
 8(12167) check_self - checking if host==us: 17==9 && 
[*.*.*.in] == [127.0.0.1]
 8(12167) check_self - checking if port 5060 matches
port 5060
 8(12167) check_self - checking if host==us: 17==13 &&
 [*.*.*.in] == [*.*.*.19]
 8(12167) check_self - checking if port 5060 matches
port 5060
*******************************************************
in my *.*.*.18 terminal i am getting this messages
*******************************************************
6(2291) SIP Request:
 6(2291)  method:  <INVITE>
 6(2291)  uri:     sip:36105@*.*.*.in
 6(2291)  version: <SIP/2.0>
 6(2291) parse_headers: flags=1
 6(2291) Found param type 232, <branch> = <0>;
state=16
 6(2291) end of header reached, state=5
 6(2291) parse_headers: Via found, flags=1
 6(2291) parse_headers: this is the first via
 6(2291) After parse_msg...
 6(2291) preparing to run routing scripts...
 6(2291) DEBUG : is_maxfwd_present: searching for
max_forwards header
 6(2291) parse_headers: flags=128
 6(2291) Found param type 232, <branch> =
<z9hG4bK3c48.f0b1ad35.0>; state=16
 6(2291) end of header reached, state=5
 6(2291) parse_headers: Via found, flags=128
 6(2291) parse_headers: this is the second via
 6(2291) Found param type 232, <branch> = <0>;
state=16
 6(2291) end of header reached, state=5
 6(2291) parse_headers: Via found, flags=128
 6(2291) Found param type 235, <rport> = <5060>;
state=6
 6(2291) Found param type 232, <branch> =
<z9hG4bK5D01004E4BDF4856A07BEA7C1D0EC3D5>; state=16
 6(2291) end of header reached, state=5
 6(2291) parse_headers: Via found, flags=128
 6(2291) end of header reached, state=9
 6(2291) DEBUG: get_hdr_field: <To> [31];
uri=[sip:36105@*.*.*.in]
 6(2291) DEBUG: to body [sip:36105@*.*.*.in
]
 6(2291) get_hdr_field: cseq <CSeq>: <48216> <INVITE>
 6(2291) DEBUG: is_maxfwd_present: value = 67
 6(2291) check_via_address(*.*.*.19, *.*.*.19, 0)
 6(2291) DEBUG: add_param: tag=3583624574
 6(2291) end of header reached, state=29
 6(2291) parse_headers: flags=256
 6(2291) DEBUG: get_hdr_body : content_length=297
 6(2291) found end of header
 6(2291) find_first_route(): No Route headers found
 6(2291) loose_route(): There is no Route HF
 6(2291) check_self - checking if host==us: 17==9 && 
[*.*.*.in] == [127.0.0.1]
 6(2291) check_self - checking if port 5060 matches
port 5060
 6(2291) check_self - checking if host==us: 17==13 && 
[*.*.*.in] == [202.65.128.18]
 6(2291) check_self - checking if port 5060 matches
port 5060
 6(2291) check_self: host != me
 6(2291) parse_headers: flags=-1
 6(2291) DEBUG: t_addifnew: msg id=4 , global msg id=3
, T on entrance=0xffffffff
 6(2291) parse_headers: flags=-1
 6(2291) parse_headers: flags=60
 6(2291) t_lookup_request: start searching:
hash=33987, isACK=0
 6(2291) DEBUG: proceeding to pre-RFC3261 transaction
matching
 6(2291) DEBUG: non-ACK matched
 6(2291) DEBUG: t_lookup_request: transaction found
(T=0x422ba740)
 6(2291) DEBUG: reply retransmitted. buf=0x4006a640:
SIP/2.0 1..., shmem=0x422bbfb8: SIP/2.0 1
 6(2291) receive_msg: cleaning up
10(2295) DEBUG: timer routine:0,tl=0x422ba8a0
next=(nil)
10(2295) DEBUG: FR_handler:stop retr. and send CANCEL
(0x422ba740)
10(2295) ->>>>>>>>> T_code=100, new_code=408
10(2295) DEBUG: relay_reply: branch=0, save=0, relay=0
10(2295) parse_headers: flags=-1
10(2295) check_via_address(*.*.*.19, *.*.*.19, 0)
10(2295) DEBUG: reply relayed. buf=0x80c3ec8: SIP/2.0
4..., shmem=0x422bbfb8: SIP/2.0 4
10(2295) DEBUG: add_to_tail_of_timer[4]: 0x422ba818
10(2295) DEBUG: add_to_tail_of_timer[0]: 0x422ba82c
10(2295) DEBUG: final_response_handler : done
10(2295) DEBUG: timer routine:7,tl=0x422ba88c
next=(nil)
 6(2291) SIP Request:
 6(2291)  method:  <ACK>
 6(2291)  uri:     sip:36105@*.*.*.in
 6(2291)  version: <SIP/2.0>
 6(2291) parse_headers: flags=1
 6(2291) Found param type 232, <branch> = <0>;
state=16
 6(2291) end of header reached, state=5
 6(2291) parse_headers: Via found, flags=1
 6(2291) parse_headers: this is the first via
 6(2291) After parse_msg...
 6(2291) preparing to run routing scripts...
 6(2291) DEBUG : sl_filter_ACK: to late to be a local
ACK!
 6(2291) DEBUG : is_maxfwd_present: searching for
max_forwards header
 6(2291) parse_headers: flags=128
 6(2291) Found param type 235, <rport> = <5060>;
state=6
 6(2291) Found param type 232, <branch> =
<z9hG4bK5D01004E4BDF4856A07BEA7C1D0EC3D5>; state=16
 6(2291) end of header reached, state=5
 6(2291) parse_headers: Via found, flags=128
 6(2291) parse_headers: this is the second via
 6(2291) DEBUG: add_param:
tag=a6a1c5f60faecf035a1ae5b6e96e979a-de09
 6(2291) end of header reached, state=29
 6(2291) DEBUG: get_hdr_field: <To> [73];
uri=[sip:36105@*.*.*.in]
 6(2291) DEBUG: to body [sip:36105@*.*.*.in]
 6(2291) get_hdr_field: cseq <CSeq>: <48216> <ACK>
 6(2291) DEBUG: is_maxfwd_present: value = 69
 6(2291) check_via_address(*.*.*.19, *.*.*.19, 0)
 6(2291) DEBUG: add_param: tag=3583624574
 6(2291) end of header reached, state=29
 6(2291) parse_headers: flags=256
 6(2291) DEBUG: get_hdr_body : content_length=0
 6(2291) found end of header
 6(2291) find_first_route(): No Route headers found
 6(2291) loose_route(): There is no Route HF
 6(2291) check_self - checking if host==us: 17==9 && 
[*.*.*.in] == [127.0.0.1]
 6(2291) check_self - checking if port 5060 matches
port 5060
 6(2291) check_self - checking if host==us: 17==13 && 
[*.*.*.in] == [202.65.128.18]
 6(2291) check_self - checking if port 5060 matches
port 5060
 6(2291) check_self: host != me
 6(2291) parse_headers: flags=-1
 6(2291) DEBUG: t_addifnew: msg id=5 , global msg id=4
, T on entrance=0xffffffff
 6(2291) parse_headers: flags=-1
 6(2291) parse_headers: flags=60
 6(2291) t_lookup_request: start searching:
hash=33987, isACK=1
 6(2291) DEBUG: proceeding to pre-RFC3261 transaction
matching
 6(2291) DEBUG: non-2xx ACK matched
 6(2291) DEBUG: t_lookup_request: transaction found
(T=0x422ba740)
 6(2291) DEBUG: cleanup_uacs: RETR/FR timers reset
 6(2291) DEBUG: add_to_tail_of_timer[2]: 0x422ba7ac
 6(2291) receive_msg: cleaning up
 6(2291) SIP Request:
 6(2291)  method:  <ACK>
 6(2291)  uri:     sip:36105@*.*.*.in
 6(2291)  version: <SIP/2.0>
 6(2291) parse_headers: flags=1
 6(2291) Found param type 232, <branch> = <0>;
state=16
 6(2291) end of header reached, state=5
 6(2291) parse_headers: Via found, flags=1
 6(2291) parse_headers: this is the first via
 6(2291) After parse_msg...
 6(2291) preparing to run routing scripts...
 6(2291) DEBUG : sl_filter_ACK: to late to be a local
ACK!
 6(2291) DEBUG : is_maxfwd_present: searching for
max_forwards header
 6(2291) parse_headers: flags=128
 6(2291) Found param type 235, <rport> = <5060>;
state=6
 6(2291) Found param type 232, <branch> =
<z9hG4bK5D01004E4BDF4856A07BEA7C1D0EC3D5>; state=16
 6(2291) end of header reached, state=5
 6(2291) parse_headers: Via found, flags=128
 6(2291) parse_headers: this is the second via
 6(2291) DEBUG: add_param:
tag=a6a1c5f60faecf035a1ae5b6e96e979a-de09
 6(2291) end of header reached, state=29
 6(2291) DEBUG: get_hdr_field: <To> [73];
uri=[sip:36105@*.*.*.in]
 6(2291) DEBUG: to body [sip:36105@*.*.*.in]
 6(2291) get_hdr_field: cseq <CSeq>: <48216> <ACK>
 6(2291) DEBUG: is_maxfwd_present: value = 69
 6(2291) check_via_address(*.*.*.19, *.*.*.19, 0)
 6(2291) DEBUG: add_param: tag=3583624574
 6(2291) end of header reached, state=29
 6(2291) parse_headers: flags=256
 6(2291) DEBUG: get_hdr_body : content_length=0
 6(2291) found end of header
 6(2291) find_first_route(): No Route headers found
 6(2291) loose_route(): There is no Route HF
 6(2291) check_self - checking if host==us: 17==9 && 
[*.*.*.in] == [127.0.0.1]
 6(2291) check_self - checking if port 5060 matches
port 5060
 6(2291) check_self - checking if host==us: 17==13 && 
[*.*.*.in] == [202.65.128.18]
 6(2291) check_self - checking if port 5060 matches
port 5060
 6(2291) check_self: host != me
 6(2291) parse_headers: flags=-1
 6(2291) DEBUG: t_addifnew: msg id=6 , global msg id=5
, T on entrance=0xffffffff
 6(2291) parse_headers: flags=-1
 6(2291) parse_headers: flags=60
 6(2291) t_lookup_request: start searching:
hash=33987, isACK=1
 6(2291) DEBUG: proceeding to pre-RFC3261 transaction
matching
 6(2291) DEBUG: non-2xx ACK matched
 6(2291) DEBUG: t_lookup_request: transaction found
(T=0x422ba740)
 6(2291) DEBUG: cleanup_uacs: RETR/FR timers reset
 6(2291) receive_msg: cleaning up
10(2295) DEBUG: timer routine:0,tl=0x422ba82c
next=(nil)
10(2295) DEBUG: timer routine:4,tl=0x422ba818
next=(nil)
 7(2292) udp_rcv_loop: probing packet received from
*.*.*.24 35091
10(2295) DEBUG: timer routine:2,tl=0x422ba7ac
next=(nil)
10(2295) DEBUG: wait_handler : removing 0x422ba740
from table
10(2295) DEBUG: delete transaction 0x422ba740
10(2295) DEBUG: wait_handler : done
*******************************************************
so where iam doing wrong
with regards
ser diehard
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[Serusers] problem in forwarding one proxy to another proxy