Bug 4793 - UriTemplate.Match doesn't match for Uri's with escaped characters
Summary: UriTemplate.Match doesn't match for Uri's with escaped characters
Alias: None
Product: Class Libraries
Classification: Mono
Component: System ()
Version: master
Hardware: PC Linux
: --- normal
Target Milestone: Untriaged
Assignee: Bugzilla
Depends on:
Reported: 2012-05-01 07:55 UTC by David Ferguson
Modified: 2012-05-03 03:13 UTC (History)
1 user (show)

Is this bug a regression?: ---
Last known good build:

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Description David Ferguson 2012-05-01 07:55:02 UTC
In some cases, UriTemplate.Match fails to match when the Uri has escaped data in it.  In this case, one of the Uri segments had an escaped '?' in it.  The following is a unit test that reproduces the problem.

        public void EscapedUriCandidate ()
            var candidateUri = new Uri (@"https://somehost:12345/path1/path2/path3/endprefix/tpath1/guid1/tpath2/~|~~|~%3F~|~Path{guid2}~|~/tpath3");
            var matchUri = new Uri (candidateUri.Scheme + "://" + candidateUri.Host + ":" + candidateUri.Port + @"/path1/path2/path3/endprefix");
            var template = new UriTemplate (@"tpath1/{guid}/tpath2/{encodedGuidString}/tpath3");
            var match = template.Match (matchUri, candidateUri);

            Assert.IsNotNull (match);
            Assert.That (match.BoundVariables ["GUID"] == "guid1");
            Assert.That (match.BoundVariables ["ENCODEDGUIDSTRING"] == "~|~~|~?~|~Path{guid2}~|~");

This test passes successfully on Windows (.NET 4.0).  It fails with Mono.

I've modified my own fork with a potential fix and will issue a pull request.