form + HTTP post doesn't work (or at least doesn't redirect)

[paulrouget]

Affects: github.com (can't log in).

Test case:

<form action="http://localhost:6060/b.html" method="post">
  <input value="click" type="submit">
</form>

Clicking on the button should load b.html. It doesn't.

[paulrouget]

This prevents logging in Github.

[paulrouget]

Using GET instead appears to work.
It also works if I use file:// instead of http://.

[KiChjang]

This is because submit body for planned navigation hasn't been implemented yet. I think it's dependent on the encoding for multipart/form-data.

@psdh are you currently working on this? Or is it ok for someone else to work on it?

[KiChjang]

The relevant PR for encoding is #9198. I can fix the navigation problem after it lands.

[paulrouget]

I can fix the navigation problem after it lands.

That would be great!

[Manishearth]

@KiChjang you implemented planned navigation recently. Is this done, or is there still work left?

Also, I guess this bug is why github's comment button doesn't work?

[jdm]

See the comment two before yours.

[pcwalton]

Suspected to be affecting Twitter login as well.