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| author | Jarkko Hietaniemi <jhi@iki.fi> | 2003-05-30 15:59:57 +0000 |
|---|---|---|
| committer | Jarkko Hietaniemi <jhi@iki.fi> | 2003-05-30 15:59:57 +0000 |
| commit | 7137b697ec555c9b289c3e73574e70805cde732d (patch) | |
| tree | 8e47527566d1122db378db681bfeb200d2de5a6b /pod | |
| parent | d69d2d9f0d14e0c849a4b59d442938c401a7f281 (diff) | |
| download | perl-7137b697ec555c9b289c3e73574e70805cde732d.tar.gz | |
A bit of networking notworking negativity.
(Inspiration from Jos.)
p4raw-id: //depot/perl@19641
Diffstat (limited to 'pod')
| -rw-r--r-- | pod/perlport.pod | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/pod/perlport.pod b/pod/perlport.pod index cdf30ab18a..45deaac333 100644 --- a/pod/perlport.pod +++ b/pod/perlport.pod @@ -487,6 +487,20 @@ To convert $Config{perlpath} to a file pathname, say: if ($^O ne 'VMS') {$thisperl .= $Config{_exe} unless $thisperl =~ m/$Config{_exe}$/i;} +=head2 Networking + +Don't assume that you can reach the public Internet. + +Don't assume that there is only one way to get through firewalls +to the public Internet. + +Don't assume that you can reach yourself or any node by the name +'localhost'. The same goes for '127.0.0.1'. + +Don't assume that any particular port (service) will respond. + +Don't assume that you can ping hosts and get replies. + =head2 Interprocess Communication (IPC) In general, don't directly access the system in code meant to be |