diff options
| -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 |