NormalizedVersion is not normalized

When I query ProGet with a normalized version, it returns no package, however if I query it with the full version, it works.

In other words, ProGet is not normalizing versions as it should.

Using a nuget.org connector, if I query ProGet with:
/Packages?$filter=tolower(Id) eq 'nsubstitute') and (NormalizedVersion eq '1.7.2')
it returns:
<?xml version="1.0" encoding="utf-8"?><feed xml:base="http://ushdc1-csdapp02.saig.frd.global/nuget/Default/" xmlns:d="http://schemas.microsoft.com/ado/2007/08/dataservices" xmlns:m="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata" xmlns="http://www.w3.org/2005/Atom"><title type="text">Packages</title><id>http://ushdc1-csdapp02.saig.frd.global/nuget/Default/Packages()/</id><updated>2017-06-22T16:21:43Z</updated><link rel="self" title="Packages" href="Packages" /></feed>

On the other hand, if I query it with a trailing zero:
/Packages?$filter=tolower(Id) eq 'nsubstitute') and (NormalizedVersion eq '1.7.2.0') it returns:
<?xml version="1.0" encoding="utf-8"?><feed xml:base="http://ushdc1-csdapp02.saig.frd.global/nuget/Default/" xmlns:d="http://schemas.microsoft.com/ado/2007/08/dataservices" xmlns:m="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata" xmlns="http://www.w3.org/2005/Atom"><title type="text">Packages</title><id>http://ushdc1-csdapp02.saig.frd.global/nuget/Default/Packages()/</id><updated>2017-06-22T16:22:54Z</updated><link rel="self" title="Packages" href="Packages" /><entry><id>http://ushdc1-csdapp02.saig.frd.global/nuget/Default/Packages(Id='NSubstitute',Version='1.7.2.0')</id><title type="text">NSubstitute</title><summary type="text"></summary><updated>2017-06-22T16:11:21Z</updated><author><name>Anthony Egerton,David Tchepak</name></author><link rel="edit-media" title="Package" href="Packages(Id='NSubstitute',Version='1.7.2.0')/$value" /><link rel="edit" title="Package" href="Packages(Id='NSubstitute',Version='1.7.2.0')" /><category term="NuGet.Server.DataServices.Package" scheme="http://schemas.microsoft.com/ado/2007/08/dataservices/scheme" /><content type="application/zip" src="http://ushdc1-csdapp02.saig.frd.global/nuget/Default/package/NSubstitute/1.7.2.0" /><m:properties xmlns:d="http://schemas.microsoft.com/ado/2007/08/dataservices" xmlns:m="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata"><d:Version>1.7.2.0</d:Version><d:Title></d:Title><d:RequireLicenseAcceptance m:type="Edm.Boolean">false</d:RequireLicenseAcceptance><d:Description>NSubstitute is a friendly substitute for .NET mocking frameworks. It has a simple, succinct syntax to help developers write clearer tests. NSubstitute is designed for Arrange-Act-Assert (AAA) testing and with Test Driven Development (TDD) in mind.</d:Description><d:ReleaseNotes></d:ReleaseNotes><d:Summary></d:Summary><d:ProjectUrl>http://nsubstitute.github.com</d:ProjectUrl><d:IconUrl>http://nsubstitute.github.com/images/nsubstitute-100x100.png</d:IconUrl><d:LicenseUrl>https://github.com/nsubstitute/NSubstitute/raw/master/LICENSE.txt</d:LicenseUrl><d:Copyright></d:Copyright><d:Tags>mocking mocks testing unit-testing TDD AAA</d:Tags><d:Dependencies></d:Dependencies><d:IsLocalPackage m:type="Edm.Boolean">true</d:IsLocalPackage><d:Created m:type="Edm.DateTime">2017-06-22T16:11:21.8100000Z</d:Created><d:Published m:type="Edm.DateTime">2017-06-22T16:11:21.8100000Z</d:Published><d:PackageSize m:type="Edm.Int64">849090</d:PackageSize><d:PackageHash>vDAfItA5TW9c597wvDuLM74K4C2Wh7zSjxHPNeRHkb906dc0wWc6myOub24JpS8ev3kw9QswLO0lMpyxzHagnw==</d:PackageHash><d:IsLatestVersion m:type="Edm.Boolean">true</d:IsLatestVersion><d:IsAbsoluteLatestVersion m:type="Edm.Boolean">true</d:IsAbsoluteLatestVersion><d:IsProGetHosted m:type="Edm.Boolean">true</d:IsProGetHosted><d:IsPrerelease m:type="Edm.Boolean">false</d:IsPrerelease><d:IsCached m:type="Edm.Boolean">false</d:IsCached><d:NormalizedVersion>1.7.2.0</d:NormalizedVersion><d:Listed m:type="Edm.Boolean">true</d:Listed><d:PackageHashAlgorithm>SHA512</d:PackageHashAlgorithm><d:HasSymbols m:type="Edm.Boolean">false</d:HasSymbols><d:HasSource m:type="Edm.Boolean">false</d:HasSource><d:DownloadCount m:type="Edm.Int32">0</d:DownloadCount><d:VersionDownloadCount m:type="Edm.Int32">0</d:VersionDownloadCount></m:properties></entry></feed>

According to NuGet's normalized version specification, the normalize version should omit trailing zeros from the fourth part of version numbers.

A zero in the fourth part of the version number will be omitted

What I could guess is that NormalizedVersion is just an alias for Version

Product: ProGet
Version: 4.7.13

This was a breaking change NuGet team made in NuGet 3.4 (I think). We did not want to not implement, as the change would impact a lot of our customers who rely on the quirks of "non-normalized" versions.

So, as a compromise, the NuGet team implemented a searching strategy in the client to try a normalized version of the number (like 0.0.0.0), and then try non-normalized version (0.0.0) if not found.

At this time, you'll need to do the same for your searches; if we ever decide to implement the normalized version, this strategy will be backwards compatible.