[ https://issues.apache.org/jira/browse/OLTU-109?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14743374#comment-14743374 ] 

Antonio Sanso commented on OLTU-109:
------------------------------------

bq. Not sure why this check is required at all in the spec though, but that is another question.

[~rikardswahn] This is one reason why

http://intothesymmetry.blogspot.ch/2015_01_01_archive.html

> OAuthTokenRequest unnecessarily requires the "redirect_uri" parameter
> ---------------------------------------------------------------------
>
>                 Key: OLTU-109
>                 URL: https://issues.apache.org/jira/browse/OLTU-109
>             Project: Apache Oltu
>          Issue Type: Bug
>          Components: oauth2-authzserver
>    Affects Versions: oauth2-0.22
>         Environment: Authorization Server
>            Reporter: John Jenkins
>             Fix For: oauth2-0.31
>
>
> The OAuthTokenRequest(HttpServletRequest) constructor will inappropriately fail if the "redirect_uri" parameter is missing. This is only required if the "redirect_uri" was given in the previous, "code" request. From the specification (section 4.1.3):
> redirect_uri
>          REQUIRED, if the "redirect_uri" parameter was included in the
>          authorization request as described in Section 4.1.1, and their
>          values MUST be identical.



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