Fix POST args with empty values not being parsed (issue #268)#351
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Fix POST args with empty values not being parsed (issue #268)#351
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Destroy post processor before invoking the callback to ensure pending POST body keys with empty values are properly finalized. Without this, POST data like "arg1=val1&arg2=" would fail to include arg2. The fix moves MHD_destroy_post_processor call to finalize_answer() before the resource callback is invoked, rather than waiting for the modded_request destructor. Added test cases verifying: - arg1=val1&arg2= correctly parses both args - arg1= correctly parses as empty string - arg1=&arg2= correctly parses both as empty strings This supersedes PR #269 with the requested code style changes.
rand_r is POSIX-specific and not available on Windows. Since this is just a stress test where thread-safe randomness isn't critical, use the portable rand() function instead.
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Summary
Fixes #268 - POST body keys without values at the end are not processed when using
application/x-www-form-urlencodedcontent type.This PR supersedes #269 with the requested changes:
nullptrinstead ofNULL(style fix)The Problem
When POST data ends with a key that has an empty value (e.g.,
arg1=val1&arg2=), the final key-value pair was not being processed. This happened becauseMHD_destroy_post_processorwas only called in the destructor, after the request handler had already executed.The Fix
Move the
MHD_destroy_post_processorcall tofinalize_answer()before the resource callback is invoked. This ensures any pending POST data is finalized before the handler accesses the arguments.Test Plan
empty_arg_value_at_endwith three cases:arg1=val1&arg2=→ correctly parses both argsarg1=→ correctly parses as empty stringarg1=&arg2=→ correctly parses both as empty strings