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while ( $from_who = accept( CLIENT_SOCK, TCP_SOCK ) ){my $data;$from_who = recv( CLIENT_SOCK, $data, MAX_RECV_LEN, 0 );if ( $from_who ){my ( $the_port, $the_ip ) = sockaddr_in( $from_who );my $remote_name = gethostbyaddr( $the_ip, AF_INET );warn "Received from $remote_name: ", length( $data ),' -> ', substr( $data, 0, 39 ), "\n";}else{warn "tcp_s1: problem with recv: $!\n";next;}sleep( 3 );warn "Sending back to client ... \n";send( CLIENT_SOCK, $data, 0 )or warn "tcp_s1: problem with send: $!\n"
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