Replying to the DL. On Tue, Dec 22, 2020 at 7:07 PM Mithun Bhattacharya <mit...@gmail.com> wrote:
> $r->connection->client_ip would report your proxy server if you have a > reverse proxy setup - this is not a common use case though. > > DNS lookup would usually be an expensive process and you are supposed to > be nice to other services so cache it for the TTL of the PTR record. > > On Tue, Dec 22, 2020 at 6:44 PM Matthias Peng <pengmatth...@gmail.com> > wrote: > >> I am a newbie to mp development stack. >> After one day of work, I have made a simple handler, which returns the >> client's address and its PTR record. >> The demo: >> https://myhostnames.com/ >> >> The code shown below: >> >> package MyHostname; >> >> >> use strict; >> >> use Net::DNS; >> >> use Apache2::RequestRec (); >> >> use Apache2::RequestIO (); >> >> use Apache2::Connection (); >> >> use APR::Table (); >> >> use Apache2::Const -compile => qw(OK FORBIDDEN); >> >> >> >> sub handler { >> >> >> my $r = shift; >> >> my $ip = $r->headers_in->{'CF-Connecting-IP'} || >> $r->connection->client_ip; >> >> >> my $host = dns_query($ip) || ""; >> >> >> $r->content_type('text/plain; charset=utf-8'); >> >> $r->print("Your IP: $ip, Hostname: $host"); >> >> >> return Apache2::Const::OK; >> >> } >> >> >> >> sub dns_query { >> >> my $ip = shift; >> >> my $resolver = Net::DNS::Resolver->new(); >> >> my $reply = $resolver->query($ip, 'PTR'); >> >> >> if ($reply) { >> >> for my $rr ($reply->answer) { >> >> return $rr->rdstring; # we need only one >> >> } >> >> } >> >> >> return; >> >> } >> >> >> >> 1; >> >> >> >> Can anyone give your review? Thanks in advance. >> >> >> Matthias >> >> >> >> >> On Tue, Dec 22, 2020 at 1:49 PM Matthias Peng <pengmatth...@gmail.com> >> wrote: >> >>> Hello >>> >>> I am developing a simple mp2 application. >>> I looked for the installation for mp2 utils, and found this two: >>> >>> libapache2-mod-perl2 >>> >>> libapache2-mod-apreq2 >>> >>> >>> what're their relations? Should I install both, or only the first one? >>> >>> >>> Thanks. >>> >>
