openresty / openresty/lua-nginx-module

unable to encode | using ngx.encode_args

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Description

We are trying to encode url arguments using ngx.encode_args but we find few special characters like |, @, ~ remains as is by the function and passed without encoding from the function. This is impacting our application as characters like | are not accepted by application code and failing the request with 400.

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  3. Fork the repository and make your change on a branch.
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Research direction

Start by tracing the ngx.encode_args entry point and determine how special characters such as |, @, and ~ are handled. Check the existing coverage for argument encoding, establish the expected URL-encoding behavior, and add a regression case showing that the affected characters are handled correctly.

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Assessment

Tech stack
lua, nginx
Domain
api, backend
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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