Github user kxepal commented on the pull request:
https://github.com/apache/couchdb-chttpd/pull/114#issuecomment-211125278
Some ideas:
1. Let `max_document_size` work only for document updates;
2. Add `require_content_length` option which enforces all the requests to
specify Content-Length. This applies mostly for multipart body parts with
document content. Or just always require that header without any additional
options (generally, that's good idea);
3. Then, for `POST|PUT /db/doc` we can check `Content-Length` header and
reject too large requests without parsing payload;
4. For multipart requests we can do the same (because p.2). Or just say,
that document size is document size + sum(size of all the attachments), and
then just again check `Content-Length` header, but without parsing payload.
Transfer chunking request with multipart content doesn't works anyway (2295
issue iirc);
5. That was the lightweight logic. For `_bulk_docs` / `_update` handlers
we'll have to use heavy logic based of determining document size from term
format based on `exceed_doc_size/2`;
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