XDR encoded packet over udp socket

m1ndgames has asked for the wisdom of the Perl Monks concerning the following question:

hello!
im trying to write a script that connects to a gameserver over udp.
the communication is based on XDR encoded packets, you can see how the packet should be crafted on the servers sourcecode:
http://gitorious.org/fg/flightgear/blobs/next/src/MultiPlayer/multiplaymgr.cxx#line900

So im connected to my local server, but i cant figure out how to craft those packets (im seeing "bad client" in the servers logfile).
pack() is only for numeric values, right? the cpan XDR module is no help either :(

can you point me in the right direction?

Comment on XDR encoded packet over udp socket

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Re: XDR encoded packet over udp socket by Anonymous Monk on Aug 09, 2012 at 02:16 UTC
If you look inside http://search.cpan.org/~gord/XDR-0.03/ you can see it use pack all over the place	[reply]
Re^2: XDR encoded packet over udp socket by Anonymous Monk on Aug 09, 2012 at 09:23 UTC
i know, but i dont understand those functions :( `sub xdrencode() { my ($args) = shift; my $xid = "FGMS"; my $vers = "1.1"; my $proc = "test"; my $prog = "test2"; my $xdr = XDR->call_packet($xid, $proc, $args, $vers, $prog); return ($xdr); } print &xdrencode("www");` [download] how do i create such a packet? can anyone give me an example please? :(	[reply] [d/l]
Re^3: XDR encoded packet over udp socket by Anonymous Monk on Aug 09, 2012 at 09:37 UTC
i know, but i dont understand those functions :( ... how do i create such a packet? can anyone give me an example please? :( Um, look at the examples that come with the module, say http://cpansearch.perl.org/src/GORD/XDR-0.03/t/record.t, http://cpansearch.perl.org/src/GORD/XDR-0.03/t/rpc.t, http://cpansearch.perl.org/src/GORD/XDR-0.03/t/codec.t call_packet is not a method so do not call it as such (with arrow), call it as a function	[reply]
Re^4: XDR encoded packet over udp socket by Anonymous Monk on Aug 09, 2012 at 12:22 UTC