Chunked transfer encoding browser experience

Question

Why the output of this simple Perl script >>

print "Content-type: text/plain\n";
print "Transfer-Encoding: chunked\n\n";
print "11\n\n";
print "0123456789ABCDEF\n";
print "11\n\n";
print "0123456789ABCDEF\n";
print "0\n\n";

...works for Chrome browser and does not for IE10..?

Answer 1

You’ve implemented the chunked transfer coding wrong: Each chunk consists of the chunk size in bytes in hexadecimal notation, followed by a CRLF sequence, followed by the chunk data:

   chunk          = chunk-size [ chunk-extension ] CRLF
                    chunk-data CRLF
   chunk-size     = 1*HEX
   last-chunk     = 1*("0") [ chunk-extension ] CRLF
   chunk-data     = chunk-size(OCTET)

So your code should look like this:

print "Content-type: text/plain\r\n";
print "Transfer-Encoding: chunked\r\n";
print "\r\n";
# first chunk
print "10\r\n";
print "0123456789ABCDEF\r\n";
# second chunk
print "10\r\n";
print "0123456789ABCDEF\r\n";
# last chunk
print "0\r\n";
print "\r\n";