https://github.com/TooTallNate/node-cgi/issues/10

hello.cgi

#!/usr/bin/perl -w
my $file = "logo.png";
my $length = -s $file;
print "Content-type: image/png\n";
print "Content-length: $length \n\n";
binmode STDOUT;
open (FH,'<', $file) || die "Could not open $file: $!";
my $buffer = "";
while (read(FH, $buffer, 10240)) {
    print $buffer;
}

hello.js

var http = require('http');
var cgi  = require('./');

var server = http.createServer(
  cgi(__dirname + '/hello.cgi')
);

server.listen(5555, function() {
  console.log('server listening');

  var req = http.request({
    port: 5555,
    host: '127.0.0.1'
  });
  req.on('response', function (res) {
    console.log(res.headers);
  });
  req.end();
});

$ node hello
server listening
{ 'content-type': 'image/png',
  'content-length': '3488 ',
  date: 'Fri, 23 Jan 2015 17:29:31 GMT',
  connection: 'keep-alive' }