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[lwip-devel] [bug #53940] About DNS case compatibility problem

From: jinfeng
Subject: [lwip-devel] [bug #53940] About DNS case compatibility problem
Date: Sat, 19 May 2018 02:05:21 -0400 (EDT)
User-agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.139 Safari/537.36


                 Summary: About DNS  case compatibility problem
                 Project: lwIP - A Lightweight TCP/IP stack
            Submitted by: zjh6607476
            Submitted on: Sat 19 May 2018 06:05:19 AM UTC
                Category: None
                Severity: 3 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: None
            lwIP version: 1.4.1



Domain name resolution problem in DNS using LwIP. I found that when DNS
parsing finished the uppercase of domain name resolution and returned to
lowercase, LwIP could not be parsed, and later debug found it. LwIP is not
compatible with case when doing domain name comparison.


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