List of working and non working fetch requests in RN Android

RN fetch.md

List of working and non working fetch requests in RN Android

• React Native version: 0.62.2
• Affected platform: Android (iOS is working fine)
• Affected stages: debug & release
• Affected JS engines: jsc, v8 & Hermes
• Used phones: Redmi Note
• Tried to comment out initializeFlipper without success
• Tried to set FLIPPER_VERSION=0.39.0 without success
• The problem also happens in Postman on macOS with the "SSL certificate verification" option enabled, although the failing URLs don't show any SSL warning in Chrome browser

Related issues:

• facebook/react-native#26939
• facebook/react-native#28551

Test code

It's a simple GET request using the built-in fetch API.

fetch(URL)
  .then(() => {
    Alert.alert("OK")
  })
  .catch((err) => {
    Alert.alert(err.message)
  })

Working URLs

These URLs work:

https://jsonplaceholder.typicode.com/todos/1

$ curl -I https://jsonplaceholder.typicode.com/todos/1
HTTP/1.1 200 OK
Date: Fri, 24 Apr 2020 12:27:19 GMT
Content-Type: application/json; charset=utf-8
Content-Length: 83
Connection: keep-alive
Set-Cookie: __cfduid=d430315d167b8ad791bd61231eadb16e51587731238; expires=Sun, 24-May-20 12:27:18 GMT; path=/; domain=.typicode.com; HttpOnly; SameSite=Lax
X-Powered-By: Express
Vary: Origin, Accept-Encoding
Access-Control-Allow-Credentials: true
Cache-Control: max-age=14400
Pragma: no-cache
Expires: -1
X-Content-Type-Options: nosniff
Etag: W/"53-hfEnumeNh6YirfjyjaujcOPPT+s"
Via: 1.1 vegur
CF-Cache-Status: HIT
Age: 3138
Accept-Ranges: bytes
Expect-CT: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
Server: cloudflare
CF-RAY: 588fd153b91e072a-LHR
cf-request-id: 024dc1284e0000072a299ff200000001

https://pokeapi.co/api/v2/pokemon/ditto/

$ curl -I https://pokeapi.co/api/v2/pokemon/ditto/
HTTP/1.1 200 OK
Date: Fri, 24 Apr 2020 12:25:30 GMT
Content-Type: application/json; charset=utf-8
Connection: keep-alive
Set-Cookie: __cfduid=d3d542aa363aae957d1ea93d35c7c838e1587731130; expires=Sun, 24-May-20 12:25:30 GMT; path=/; domain=.pokeapi.co; HttpOnly; SameSite=Lax; Secure
Access-Control-Allow-Origin: *
Cache-Control: public, max-age=86400, s-maxage=86400
Etag: W/"28b1-tyDig3BYFY0aqy64yb8Ju6MV01U"
Function-Execution-Id: ajnj5ot998v6
X-Cloud-Trace-Context: fc245d7f1ed8aba09a31ae812c1a2370
X-Powered-By: Express
X-Served-By: cache-cdg20756-CDG
X-Cache: HIT
X-Cache-Hits: 1
X-Timer: S1587100383.588585,VS0,VE1
Vary: Accept-Encoding,cookie,need-authorization, x-fh-requested-host, accept-encoding
CF-Cache-Status: HIT
Age: 15007
Expect-CT: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
Server: cloudflare
CF-RAY: 588fceae5822082c-CDG
cf-request-id: 024dbf80fb0000082cfe3eb200000001

http://ip.jsontest.com/

$ curl -I http://ip.jsontest.com/
HTTP/1.1 200 OK
Access-Control-Allow-Origin: *
Content-Type: application/json
X-Cloud-Trace-Context: 13cc2aeeaefaca64b310e0f19377a283
Content-Length: 25
Date: Fri, 24 Apr 2020 12:29:33 GMT
Server: Google Frontend

http://ip.jsontest.com/?alloworigin=false

$ curl -I http://ip.jsontest.com/?alloworigin=false
HTTP/1.1 200 OK
Content-Type: application/json
X-Cloud-Trace-Context: ca852b68ff3c24a7bf876706ab38db1d
Content-Length: 25
Date: Fri, 24 Apr 2020 12:29:47 GMT
Server: Google Frontend

https://postman-echo.com/get

$ curl -I https://postman-echo.com/get
HTTP/1.1 200 OK
Content-Length: 181
Content-Type: application/json; charset=utf-8
Date: Fri, 24 Apr 2020 12:54:37 GMT
ETag: W/"b5-6d5ifhyrvsuS0ppzbyQT4j74V4U"
Server: nginx
set-cookie: sails.sid=s%3AaXeTw8w-8uRS9mY-GcLIJUB1yiokdwAE.05dYu3YtdThLpaXdB1mAXuYZeh1xQN4VM7sF8pra8rc; Path=/; HttpOnly
Vary: Accept-Encoding
Connection: keep-alive

https://httpbin.org/get

$ curl -I https://httpbin.org/get
HTTP/1.1 200 OK
Date: Fri, 24 Apr 2020 13:00:48 GMT
Content-Type: application/json
Content-Length: 256
Connection: keep-alive
Server: gunicorn/19.9.0
Access-Control-Allow-Origin: *
Access-Control-Allow-Credentials: true

Failing URLs

These URLs raise a TypeError: Network request failed:

https://www.mocky.io/v2/5185415ba171ea3a00704eed

$ curl -I https://www.mocky.io/v2/5185415ba171ea3a00704eed
HTTP/1.1 200 OK
Server: Cowboy
Connection: keep-alive
Date: Fri, 24 Apr 2020 12:26:45 GMT
Content-Type: application/json
Content-Length: 18
Via: 1.1 vegur

https://pixiumdigital.com

$ curl -I https://pixiumdigital.com
HTTP/1.1 200 OK
Date: Mon, 27 Apr 2020 10:02:30 GMT
Server: Apache/2.4.41 (Amazon) OpenSSL/1.0.2k-fips PHP/7.1.33
X-Powered-By: PHP/7.1.33
Link: <https://pixiumdigital.com/wp-json/>; rel="https://api.w.org/"
Link: <https://pixiumdigital.com/>; rel=shortlink
Last-Modified: Mon, 27 Apr 2020 09:57:46 GMT
ETag: "121f90e263d3f26a1b490545303d666a"
Set-Cookie: qtrans_front_language=en; expires=Tue, 27-Apr-2021 10:02:30 GMT; Max-Age=31536000; path=/
Set-Cookie: PHPSESSID=v2u861ud3h2q1k2l1p9dec45mg; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate
Pragma: no-cache
Link: <https://pixiumdigital.com/wp-json/>; rel="https://api.w.org/"
Link: <https://pixiumdigital.com/>; rel=shortlink
Referrer-Policy:
Content-Type: text/html; charset=UTF-8

(undisclosed https private drupal graphql api)

fetch("https://some-drupal-api.fr/fr/graphql", {
  headers: {
    Authorization: `Basic ${base64.encode(`user:password`)}`,
  },
})

$ curl --user user:password -I https://some-drupal-api.fr/fr/graphql
HTTP/1.1 200 OK
Server: nginx
Content-Type: application/json
Connection: keep-alive
Vary: Accept-Encoding
Cache-Control: must-revalidate, no-cache, private
Date: Fri, 24 Apr 2020 10:35:22 GMT
X-Drupal-Dynamic-Cache: UNCACHEABLE
X-UA-Compatible: IE=edge
Content-language: fr
X-Content-Type-Options: nosniff
X-Frame-Options: SAMEORIGIN
Expires: Sun, 19 Nov 1978 05:00:00 GMT
Vary:
X-Generator: Drupal 8 (https://www.drupal.org)
X-Drupal-Cache: HIT
Access-Control-Allow-Origin: https://www.some-drupal-site.com