Dear community, I'm just coding a little diameter avp converion and I need to pad the AVP string. According to RFC 3588, AVP string that do not align on a 32-bit boundary MUST have the necessary padding 00.

examples (space between values is only to shown better and should be removed on final string): 
e4 99 68 f8 41 ==> e4 99 68 f8 41 00 00 00
40 ==> 40 00 00 00
2a 2e ==> 2a 2e 00 00

[download]

My simple code just takes a string and convert it in hex, but I need to add 00 padding on the right basing on above rules/example:
$Origin_Host_CER="example.me";
$Origin_Host_CER =~ s/(.)/sprintf '%02x', ord $1/seg;       
print "STX2HEX: $Origin_Host_CER\n\n";
print length($Origin_Host_CER)/2;

[download]

This will result in: STX2HEX: 6578616d706c652e6d65
10
So, final string should have 2 padding: 6578616d706c652e6d650000

Could someone help me to understand how to do that possibility without use any external module?
Thank you
Lucas

In reply to Align string on a 32-bit boundary with padding by Lucas Rey

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