Unable to get request.POST after request.get_raw_post_data

[Maxim Ivanov]

I need to get raw request body, the only solution I found is request.get_raw_post_data, but once I accessed it I am unable to use request.POST anymore. From my point of view access to request.POST should check if cached body data already exist and if yes try to use it instead of reading environwsgi.input

[Maxim Ivanov]

Fix patch + regression tests on WSGI handler

[Maxim Ivanov]

Attaching patch which fixes problem for WSGI handler with regression tests provided. Patch for mod_python is there too. Basically it fixes access to request.POST and requst.raw_post_data in any order in case of multipart POST content type.

I am not familiar with mod_python and don't know what is 'req' argument passed by handler, thats why there are no regression tests for mod_python handler.

[Karen Tracey]

#14024 reported this again and proposed a different approach to fix.

[Piotr Czachur]

This issue is related: #14035 (Cannot access POST after request.encoding was set to a custom value)

[Piotr Czachur]

Another related issue: #14753 (Accessing (Get)HttpRequest.raw_post_data in view results in exception during testing)

[Ramiro Morales]

Tests converted to unit tests

[Ramiro Morales]

The patch doesn't apply anymore because a) Since then there has been a code shuffle for the HTTPRequest streaming feature and b) Most of our tests were converted to unit tests.

I've attached redbaron's tests updated to apply to trunk as of now. They add two failing cases.

[vkryachko]

This is a duplicate of #15679