[OpenSIPS-Users] uac_replace_from/to

[Антон Ершов]

Hello friends
Help me to understand. In request_route i make replace from and to fields.
After an unsuccessful attempt to invite, I try to direct the call to
another place and again I need to replace the from and to fields. But
instead of replacing, new values are simply added

route {
    ...
    route(rewrite_header);
    ...
}
failure_route[missed_call] {
    setflag(need_uac_restore);
    ...
    route(rewrite_header);
}
route[rewrite_header] {
    if (isflagset(need_uac_restore)) {
        xlog("L_INFO", "[ $ci ] - restore from and to fields\n");
        uac_restore_from();
        uac_restore_to();
    }
     uac_replace_from("","sip:$avp(fromuser)@$avp(fromdomain)");
     uac_replace_to("","sip:$avp(touser)@$avp(todomain)");
}

in the end I get such fields

From:  <sip:2220222 at 10.10.10.10><sip:5274274 at sipofon.loc
>;tag=fe654d87-7565-408f-9925-98a5bac99e1c
To: <sip:3865071 at 10.10.10.10><sip:3865071 at sipofon.loc>

it simply appends the new value to the old and does not replace it
changing replace modes in uac module does not change behavior
in debug log i see this

DBG:uac:replace_uri: uri to replace [<sip:2220222 at 10.23.100.40>],
replacement is [<sip:79385274274 at multifon.ru>]
DBG:dialog:new_dlg_val: inserting <739823>=<<sip:5274274 at sipofon.loc>>
DBG:dialog:store_dlg_value_unsafe: var found-> <<sip:2220222 at 10.10.10.10>>!
DBG:uac:replace_uri: uri to replace [<sip:3865071 at 10.100.100.100>],
replacement is [<sip:3865071 at sipofon.loc>]
DBG:dialog:new_dlg_val: inserting <739824>=<<sip:3865071 at sipofon.loc>>
DBG:dialog:store_dlg_value_unsafe: var found-> <<sip:3865071 at 10.10.10.10>>!

10.23.100.40 - call initiator
10.10.10.10 - where should the call go first
10.100.100.100 - opensips
sipofon.loc - where should the call go after failure_route has worked
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