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socket recive problem

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stefano cerbioni
April 2, 2021 08:47
socket recive problem
Message ID:
hi i try to recive  a stream string  by  a client (write in C++) , if i use
netcat ,  work ok but  when i use a  script in perl work partially , recive
"Connection recieved from $name\n";,  but  $name is  blank , why ?? thanks
this is a script
use strict;
use Socket;

# use port 7890 as default
my $port = shift || 23456;
my $proto = getprotobyname('tcp');
my $server = "localhost";  # Host IP running the server

# create a socket, make it reusable
socket(SOCKET, PF_INET, SOCK_STREAM, $proto)
   or die "Can't open socket $!\n";
   or die "Can't set socket option to SO_REUSEADDR $!\n";

# bind to a port, then listen
bind( SOCKET, pack_sockaddr_in($port, inet_aton($server)))
   or die "Can't bind to port $port! \n";

listen(SOCKET, 5) or die "listen: $!";
print "SERVER started on port $port\n";

# accepting a connection
my $client_addr;
while ($client_addr = accept(NEW_SOCKET, SOCKET)) {
   # send them a message, close connection
   my $name = gethostbyaddr($client_addr, AF_INET );
   print NEW_SOCKET "Smile from the server";
   print "Connection recieved from $name\n";
   close NEW_SOCKET;

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