URL encoded colon resolves in 400 Bad Request
asp.net, asp.net-mvc-4, asp.net-web-api, urlencode
Solution
It seems that ASP.net does not allow colons before the '?' in an URL, even if it is encoded as %3A.
For example, these won't work
http://foo.org/api/persons/foo:bar http://foo.org/api/persons/foo%3abar
But this works: http://foo.org/api/persons?id=foo%3abar
In all examples, we would expect ASP.NET MVC to pass "foo:bar" as an id argument, properly decoded. I just tested this with MVC4 and it seems to work. It is annoying that it doesn't accept the URL encoding before the question mark though, but I'm sure there is a good reason for it. Probably to keep everything before the question mark a valid URL and any arguments after the question mark.
Problem
Why does this url resolve in 400 - Bad Request? http://localhost:2785/api/ticker/Web.App.QuotesReaders/search=se%3Aabb My environment is Visual Studio 2010, MVC 4 and the controller used is a WebApiController. The %3A is an URL-encoded colon. SOLUTION This works for some reason: http://localhost:2785/api/ticker?className=Web.App.QuotesReaders&search=se%3Aabb ... which means, I couldn't specify this route in global.asax.cs: ``` /api/ticker/{className}/{search} ``` ... nor this ... ``` /api/ticker/{className}/search={search} ``` ... but this ... ``` /api/ticker ``` For further information: http://www.hanselman.com/blog/ExperimentsInWackinessAllowingPercentsAnglebracketsAndOtherNaughtyThingsInTheASPNETIISRequestURL.aspx