The HTTP callback is explicitly allowed to send the HTTP response on its own and set the carry to signal that. Therefore it seems reasonable to export httpd_send_response to allow the HTTP callback to make use of the given infrastructure to send the HTTP response.
- Tab chars were partially used with the unusual width of two blanks. I removed them altogether.
- Line endings were inconsistent even iniside individual files. I normalized them.
- I introduced a consistent coding style regarding comment indenting and blank line usage.
- I removed trailing spaces.
- I removed newlines following unnamed labels.
- ...
