App Platform gives 400 Bad Request (cloudflare) error with PATCH requests

Question

Hi!

My Django app running on App Platform gives 400 Bad Request errors when making PATCH requests. It does work when I change it to PUT.

I noticed cloudflare below the message. Anyone knows if Cloudflare disallows certain requests?

Answer 1

cbaker February 1, 2021

CloudFlare should properly pass an HTTP PATCH request. HTTP PATCH requests should have a request body, is it possible that your request is missing a body?

If you’re still having trouble, could you either post here (or contact support) the request header and body you’re using in your request.

Reply Report

gijsnijholt February 1, 2021

Thanks for answering so fast!

I think it’s sending a request body. It should, because locally (docker/nginx/django) it works too.

Here’s the request as a curl command + response:

curl 'https://xxxxxxxxxxxx-m53sa.ondigitalocean.app/api/xxxxxxxx/1/' \
  -i -X 'patch' \
  -H 'authority: xxxxxxxxxxxx-m53sa.ondigitalocean.app' \
  -H 'pragma: no-cache' \
  -H 'cache-control: no-cache' \
  -H 'sec-ch-ua: "Chromium";v="88", "Google Chrome";v="88", ";Not A Brand";v="99"' \
  -H 'dnt: 1' \
  -H 'accept-language: en,nl;q=0.9,nb;q=0.8,ar;q=0.7,de;q=0.6,en-US;q=0.5' \
  -H 'sec-ch-ua-mobile: ?0' \
  -H 'user-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.96 Safari/537.36' \
  -H 'content-type: application/json' \
  -H 'accept: application/json' \
  -H 'x-csrftoken: xXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxX' \
  -H 'origin: https://xxxxxxxxxxxx-m53sa.ondigitalocean.app' \
  -H 'sec-fetch-site: same-origin' \
  -H 'sec-fetch-mode: cors' \
  -H 'sec-fetch-dest: empty' \
  -H 'referer: https://xxxxxxxxxxxx-m53sa.ondigitalocean.app/editor/features/' \
  -H 'cookie: __cfduid=xXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxX; csrftoken=xXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxX; sessionid=xXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxX' \
  --data-raw '{"features":[{"id":1609186796562,"title":"Overdracht","feature_fields":[{"id":1609186862804,"key":"Vraagprijs","value":"€ ---- k.k."},{"id":1609186869959,"key":"Status","value":"Beschikbaar"}]},{"id":1609186801398,"title":"Bouw","feature_fields":[{"id":1609186890119,"key":"Soort woonhuis","value":"..."},{"id":1609186900570,"key":"Soort bouw\t","value":"Bestaande bouw"},{"id":1609186905949,"key":"Bouwjaar","value":"..."},{"id":1609186926828,"key":"Soort dak\t","value":"..."},{"id":1609187074026,"key":"Keurmerken","value":"..."}]},{"id":1609186824823,"title":"Oppervlakte en inhoud","feature_fields":[{"id":1609186952829,"key":"Woonoppervlakte","value":"... m2"},{"id":1609186961885,"key":"Gebouwgebonden buitenruimte\t","value":"... m2"},{"id":1609188292135,"key":"Inhoud","value":"... m3"}]},{"id":1609186990393,"title":"Indeling","feature_fields":[{"id":1609187097607,"key":"Aantal kamers\t","value":"? (? slaapkamers)"},{"id":1609187105516,"key":"Aantal badkamers\t","value":"? badkamer"},{"id":1609187112300,"key":"Badkamervoorzieningen","value":"?"},{"id":1609187118993,"key":"Aantal woonlagen\t","value":"? woonlagen"},{"id":1609187126082,"key":"Voorzieningen","value":"?"}]},{"id":1609186994071,"title":"Energie","feature_fields":[{"id":1609187061179,"key":"Voorlopig energielabel\t","value":"?"},{"id":1609189202095,"key":"Oud label","value":"?"}]},{"id":1609187003579,"title":"Kadastrale gegevens","feature_fields":[{"id":1609187063238,"key":"Oppervlakte","value":"? m2"}]},{"id":1609187011643,"title":"Buitenruimte","feature_fields":[{"id":1609187065017,"key":"Ligging","value":"..."}]},{"id":1609187017349,"title":"Bergruimte","feature_fields":[{"id":1609187277307,"key":"Schuur/berging\t","value":"..."}]},{"id":1609187022343,"title":"Parkeergelegenheid","feature_fields":[{"id":1609187227694,"key":"Soort parkeergelegenheid\t","value":"..."}]},{"id":1609263094635,"title":"Garage","feature_fields":[{"id":1609263101711,"key":"Inhoud","value":"? m3"}]}]}' \
  --compressed
HTTP/2 400
server: cloudflare
date: Mon, 01 Feb 2021 18:18:33 GMT
content-type: text/html
content-length: 155
cf-ray: -

<html>
<head><title>400 Bad Request</title></head>
<body>
<center><h1>400 Bad Request</h1></center>
<hr><center>cloudflare</center>
</body>
</html>

thanks again!

Reply Report

Answer 2

gijsnijholt February 1, 2021

Thanks for answering so fast!

I think it’s sending a request body. It should, because locally (docker/nginx/django) it works too.

Here’s the request as a curl command + response:

curl 'https://xxxxxxxxxxxx-m53sa.ondigitalocean.app/api/xxxxxxxx/1/' \
  -i -X 'patch' \
  -H 'authority: xxxxxxxxxxxx-m53sa.ondigitalocean.app' \
  -H 'pragma: no-cache' \
  -H 'cache-control: no-cache' \
  -H 'sec-ch-ua: "Chromium";v="88", "Google Chrome";v="88", ";Not A Brand";v="99"' \
  -H 'dnt: 1' \
  -H 'accept-language: en,nl;q=0.9,nb;q=0.8,ar;q=0.7,de;q=0.6,en-US;q=0.5' \
  -H 'sec-ch-ua-mobile: ?0' \
  -H 'user-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.96 Safari/537.36' \
  -H 'content-type: application/json' \
  -H 'accept: application/json' \
  -H 'x-csrftoken: xXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxX' \
  -H 'origin: https://xxxxxxxxxxxx-m53sa.ondigitalocean.app' \
  -H 'sec-fetch-site: same-origin' \
  -H 'sec-fetch-mode: cors' \
  -H 'sec-fetch-dest: empty' \
  -H 'referer: https://xxxxxxxxxxxx-m53sa.ondigitalocean.app/editor/features/' \
  -H 'cookie: __cfduid=xXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxX; csrftoken=xXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxX; sessionid=xXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxXxX' \
  --data-raw '{"features":[{"id":1609186796562,"title":"Overdracht","feature_fields":[{"id":1609186862804,"key":"Vraagprijs","value":"€ ---- k.k."},{"id":1609186869959,"key":"Status","value":"Beschikbaar"}]},{"id":1609186801398,"title":"Bouw","feature_fields":[{"id":1609186890119,"key":"Soort woonhuis","value":"..."},{"id":1609186900570,"key":"Soort bouw\t","value":"Bestaande bouw"},{"id":1609186905949,"key":"Bouwjaar","value":"..."},{"id":1609186926828,"key":"Soort dak\t","value":"..."},{"id":1609187074026,"key":"Keurmerken","value":"..."}]},{"id":1609186824823,"title":"Oppervlakte en inhoud","feature_fields":[{"id":1609186952829,"key":"Woonoppervlakte","value":"... m2"},{"id":1609186961885,"key":"Gebouwgebonden buitenruimte\t","value":"... m2"},{"id":1609188292135,"key":"Inhoud","value":"... m3"}]},{"id":1609186990393,"title":"Indeling","feature_fields":[{"id":1609187097607,"key":"Aantal kamers\t","value":"? (? slaapkamers)"},{"id":1609187105516,"key":"Aantal badkamers\t","value":"? badkamer"},{"id":1609187112300,"key":"Badkamervoorzieningen","value":"?"},{"id":1609187118993,"key":"Aantal woonlagen\t","value":"? woonlagen"},{"id":1609187126082,"key":"Voorzieningen","value":"?"}]},{"id":1609186994071,"title":"Energie","feature_fields":[{"id":1609187061179,"key":"Voorlopig energielabel\t","value":"?"},{"id":1609189202095,"key":"Oud label","value":"?"}]},{"id":1609187003579,"title":"Kadastrale gegevens","feature_fields":[{"id":1609187063238,"key":"Oppervlakte","value":"? m2"}]},{"id":1609187011643,"title":"Buitenruimte","feature_fields":[{"id":1609187065017,"key":"Ligging","value":"..."}]},{"id":1609187017349,"title":"Bergruimte","feature_fields":[{"id":1609187277307,"key":"Schuur/berging\t","value":"..."}]},{"id":1609187022343,"title":"Parkeergelegenheid","feature_fields":[{"id":1609187227694,"key":"Soort parkeergelegenheid\t","value":"..."}]},{"id":1609263094635,"title":"Garage","feature_fields":[{"id":1609263101711,"key":"Inhoud","value":"? m3"}]}]}' \
  --compressed
HTTP/2 400
server: cloudflare
date: Mon, 01 Feb 2021 18:18:33 GMT
content-type: text/html
content-length: 155
cf-ray: -

<html>
<head><title>400 Bad Request</title></head>
<body>
<center><h1>400 Bad Request</h1></center>
<hr><center>cloudflare</center>
</body>
</html>

thanks again!

Reply Report

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