Relative Uris and leading/trailing backslash

Be very accurate with leading and trailing backslashes in URLs. For instance, I have some app installed on http://some.host/path that provides api via relative uri /api/some/call

There is only one correct combination of Base and Rel Uris:

(4 items)4
Base	Rel	Result
http://some.host/path/	/api/some/call	http://some.host/api/some/call
http://some.host/path/	api/some/call	http://some.host/path/api/some/call
http://some.host/path	/api/some/call	http://some.host/api/some/call
http://some.host/path	api/some/call	http://some.host/api/some/call

var baseUrl = new Uri("http://some.host/path/");

var relUrl = new Uri("api/some/call", UriKind.Relative);

var result = new Uri(baseUrl, relUrl);

So as thumb rules: All base urls should be with trailing backslashes and all relative urls should be without trailing backslashes.