dimanche 23 juin 2019

Is accurate uri parsing impossible?

Let's just look at the host part, since subdomain can have unlimited levels, and there can be different level of domains, for example:

foo.foo2.host.bar.bar2

This is a completely valid host, but while the below are also valid:

foo.foo2.foo3.host.bar.bar2

foo.foo2.host.bar.bar2.bar3

Basically, we can't really use the 'dot' to tell the difference between subdomains and domains

So without a network to actually lookup the domain info from the web, is it impossible to properly parse an uri?

How does web browser handle this situation?




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