59 lines
1.8 KiB
Perl
Executable File
59 lines
1.8 KiB
Perl
Executable File
#!/usr/bin/perl -w
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# tcpecho.pl - Echo server using TCP
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#
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# Copyright (c) 2003 Sampo Kellomaki <sampo@iki.fi>, All Rights Reserved.
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# $Id: tcpecho.pl,v 1.2 2003/08/17 07:44:47 sampo Exp $
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# 17.8.2003, created --Sampo
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#
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# Usage: ./tcpecho.pl *port*
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#
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# This server always binds to localhost as this is all that is needed
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# for tests.
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die "Usage: ./tcpecho.pl *port*\n" unless $#ARGV == 0;
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($port) = @ARGV;
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$our_ip = "\x7F\0\0\x01";
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$trace = 2;
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use Socket;
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use Net::SSLeay;
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#
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# Create the socket and open a connection
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#
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$our_serv_params = pack ('S n a4 x8', &AF_INET, $port, $our_ip);
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socket (S, &AF_INET, &SOCK_STREAM, 0) or die "socket: $!";
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bind (S, $our_serv_params) or die "bind: $! (port=$port)";
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listen (S, 5) or die "listen: $!";
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#while (1) { # uncomment to turn off "one shot" behaviour
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print "tcpecho $$: Accepting connections on port $port...\n" if $trace>1;
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($addr = accept(Net::SSLeay::SSLCAT_S, S)) or die "accept: $!";
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$old_out = select(Net::SSLeay::SSLCAT_S); $| = 1; select ($old_out); # Piping hot!
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if ($trace) {
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($af,$client_port,$client_ip) = unpack('S n a4 x8',$addr);
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@inetaddr = unpack('C4',$client_ip);
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print "$af connection from " . join ('.', @inetaddr)
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. ":$client_port\n" if $trace;;
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}
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#
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# Connected. Exchange some data.
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#
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$got = Net::SSLeay::tcp_read_all() or die "$$: read failed";
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print "tcpecho $$: got " . length($got) . " bytes\n" if $trace==2;
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print "tcpecho: Got `$got' (" . length ($got) . " chars)\n" if $trace>2;
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$got = uc $got;
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Net::SSLeay::tcp_write_all($got) or die "$$: write failed";
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$got = ''; # in case it was huge
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print "tcpecho: Tearing down the connection.\n\n" if $trace>1;
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close Net::SSLeay::SSLCAT_S;
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#}
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close S;
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__END__
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