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Fixed in 5.4.2



Found in


Issue ID




[iOS] UnityWebRequest.Post calls fail on iOS



Steps to reproduce:
1) Open the latest attached project.
2) Open 'test' scene, build and deploy to a device.
3) Press the 'Send GET Request' UI button.
- Some text is returned by the web request - call successful.
4) Press the 'Send Post Request (1)' UI button.

An error message appears:
<html><title>Error 400 (Bad Request)!!1</title></html>
UnityEngine.SetupCoroutine:InvokeMoveNext(IEnumerator, IntPtr)

Reproduces with Mono2x and IL2cpp.

Comments (4)

  1. shubhamswaraj2021

    Aug 18, 2020 11:26

    good one <a href="">lyricsauto</a>

  2. Novack

    Sep 01, 2016 15:09

    I correct myself, there is no possibility to make POST requests in Android, as legacy WWW class wont follow redirects properly, nor return the response headers properly (LOCATION header is droped).

  3. grimmy

    Aug 26, 2016 11:06

    I'm desperate for a fix on this at my end. It means I can't access my database on Android OR iOS at all and is severely hindering development. Please crank up the severity ;) Thanks

  4. Novack

    Aug 09, 2016 13:56

    The happens on Android as well.

    Temporary fix for iOS described here:

    For Android, for the time being the only known solution is to backport UnityWebRequest calls to legacy WWW class.

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