Proxy path validation blocks adding huuto.net API

[kyyberi]

As a real world example, I tried to add huuto.net API to catalog and add root of the API to proxy. According to huuto.net API documentation, their root is "/1.1/". http://dev.huuto.net/methods.html#root

[bajiat]

@brylie Please verify the error and see where the problems lies?

[brylie]

It looks like we just need to allow '.' character in our API/Proxy base path regular expressions.

[brylie]

We can use the Wikipedia section on types of URL characters to guide our regex design.

[brylie]

There is a good discussion about URL characters on StackOverflow, that has a few solutions and mentions some security considerations.