Commits on Mar 30, 2021

1. Disallow octal format in Ipv4 string …

   In its original specification, leading zero in Ipv4 string is interpreted
   as octal literals. So a IP address 0127.0.0.1 actually means 87.0.0.1.
   
   This confusion can lead to many security vulnerabilities. Therefore, in
   [IETF RFC 6943], it suggests to disallow octal/hexadecimal format in Ipv4
   string all together.
   
   Existing implementation already disallows hexadecimal numbers. This commit
   makes Parser reject octal numbers.
   
   Fixes rust-lang#83648.
   
   [IETF RFC 6943]: https://tools.ietf.org/html/rfc6943#section-3.1.1

   

   xu-cheng committed Mar 30, 2021
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