# Return 400 for invalid $uri and $args

**URL:** <https://www.ruby-forum.com/t/return-400-for-invalid-uri-and-args/226372>\
**Category:** NGINX\
**Created:** [July 24, 2012, 8:50am UTC](https://www.ruby-forum.com/t/return-400-for-invalid-uri-and-args/226372 "2012-07-24T08:50:58Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Edho\_A](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/e/848f3c/32.png) [@Edho\_A](https://www.ruby-forum.com/u/Edho_A)\
**Post date:** [July 24, 2012, 8:50am UTC](https://www.ruby-forum.com/t/return-400-for-invalid-uri-and-args/226372/1 "2012-07-24T08:50:58Z")

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Is there a way to check $uri and $args for invalid percent-encoded  
utf8 string and return 400?