HTTPRequest get_body_size() returns -1 in HTML5

[JMedina90]

Tested versions

v3.5.3.stable.official [6c81413]

System information

MacOS Sonoma 14.1.2.
Browser tested: Chrome, Firefox.

Issue description

When calling the HTTPRequest.get_body_size() function, it returns -1 only in HTML5, while it works as expected in MacOS.

Steps to reproduce

Call the function in get_body_size() while in HTML5.

Minimal reproduction project (MRP)

N/A

[AThousandShips]

Does the call to request return OK?

[JMedina90]

Yes, the call returns OK.

[bitsawer]

In Godot 4.x on Web / HTML5 platform we always return -1 for technical reasons, see #79846. I guess similar limitations also apply to Godot 3. This seems to be explicitly documented for Godot 4, but not Godot 3.

[JMedina90]

Okay, I see! Thank you.

[AThousandShips]

This should still be tracked and documented, please leave it open until solved

[Mickeon]

Actually this is documented in 3.x (future 3.6) but has not been retroactively added to 3.5 .

godot/doc/classes/HTTPRequest.xml

Line 84 in e184e62

[b]Note:[/b] Some Web servers may not send a body length. In this case, the value returned will be [code]-1[/code]. If using chunked transfer encoding, the body length will also be [code]-1[/code].

[AThousandShips]

That is unrelated, that's about the servers sending packets to the client, not the platform of Godot, this is already in 3.5 (it was added five years ago)