Recently met to visit 404 questions, using the domain name can access and use IP ULR can access 404. For example: http://www.123.com/xxxx/xxx can access, IP for can not: http://111.111.123.123/xxxx/xxx
But the URL rewrite is: http://111.111.123.123/www.123.com/xxxx/xxx also can access, what is this principle?

CodePudding user response:

Individual is not very sure, guess
1. Has the CDN or content caching
2. The program has a source judgment, judgment of HTTP