Yes, thats it !

The 'nathelper.c' I am using is one posted by Schweizer Laurent November the 10th. It compiles without problems, so...

My ser.cfg is below.

Kiko

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" listen=193.145.233.66

# Defino lo alias siguiente para identificar si la llamada va hacia dentro # del dominio o ambas partes pertenecen al dominio. alias="xxx.xxx.xxx.xxx"

# ------------------ module loading ----------------------------------

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"

loadmodule "/usr/local/lib/ser/modules/auth.so" loadmodule "/usr/local/lib/ser/modules/acc.so" loadmodule "/usr/local/lib/ser/modules/auth_radius.so"

# !! Nathelper loadmodule "/usr/local/lib/ser/modules/nathelper.so"

# !! Mediaproxy loadmodule "/usr/local/lib/ser/modules/domain.so" #loadmodule "/usr/local/lib/ser/modules/mediaproxy.so"

# ----------------- setting module-specific parameters ---------------

#Configuracion de la base de datos. De momento de tipo DBTEXT modparam("usrloc|domain", "db_url", "sql://ser:heslo@localhost/ser")

# -- domain params -- modparam("domain","db_mode", 0) # No caching !!! Siempre desde BD

# -- usrloc params -- modparam("usrloc", "db_mode", 1)

# 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")

modparam("auth_radius", "radius_config", "/usr/local/etc/radiusclient/radiusclient.conf")

# -- rr params -- # add value to ;lr param to make some broken UAs happy modparam("rr", "enable_full_lr", 1)

#URI RADIUS #modparam("uri_radius", "radius_config", "/usr/local/etc/radiusclient/radiusclient.conf")

# Registrar modparam("registrar", "nat_flag", 6)

# Mediaproxy !!! # modparam("mediaproxy", "mediaproxy_socket", "/usr/local/etc/ser/proxydispatcher.sock") # modparam("mediaproxy", "sip_asymmetrics", "/usr/local/etc/ser/sip-asymmetric-clients") # modparam("mediaproxy", "rtp_asymmetrics", "/usr/local/etc/ser/rtp-asymmetric-clients") # modparam("mediaproxy", "natping_interval", 60)

# !! 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{

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") { if (!radius_www_authorize("xxx.xxx.xxx")) { www_challenge("xxx.xxx.xxx", "1"); break; };

save("location"); break; };

lookup("aliases"); if (!uri==myself) { append_hf("P-hint: outbound alias\r\n"); route(1); break; };

# native SIP destinations are handled using our USRLOC DB if (!lookup("location")) { sl_send_reply("404", "Not Found"); break; }; }; 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(); }; }

----- Original Message ----- From: "Atle Samuelsen" clona@camaro.no To: LBE_SIP@telefonica.net Cc: serusers@lists.iptel.org Sent: Thursday, November 25, 2004 9:59 AM Subject: Re: [Serusers] Mediaproxy / Rtpproxy Video Quality

There was a guy a couple of weeks ago that made a patch, seach the arcive for it.. (I currently didnt have it in my mailbox...)

-atle

• LBE_SIP@telefonica.net LBE_SIP@telefonica.net [041125 09:50]:

...

Kiko,

rtpproxy with video support???. Where can I find that beast?. As far as I know rtpproxy only supports audio (at least that is what we got). Could you send me your config file, please?

Thanks in advance, regards, Luciano Bajo

----- Mensaje Original ----- De: "Kiko Vives" kiko.vives@ua.es Fecha: Jueves, Noviembre 25, 2004 9:06 am Asunto: [Serusers] Mediaproxy / Rtpproxy Video Quality

...

Hi all again.

A few days before I wrote to the list asking if someone has a similar problem that the one I had. This problem was that when I start a videsession between 2 UAs using Mediaproxy, audio was perfect but video was horrible. Nobody tells me anything.

After checking that there was not a problem of my network (drops or something like that in switches or routers), I decided to try Rtpproxy with video support instead of Mediaproxy. I don't know why but with rtpproxy,video goes PERFECT with exactly the same SER.CFG (using the correct options) that I used for Mediaproxy.

So if someone find a similar problem... try it !

Bye:

Kiko

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