[10.1.0.2:30964-0] Status 400: Missing HTTP protocol string! in logs

[cswilliams]

Hi,
I just started seeing a lot of these showing up in my logs:
[10.1.0.2:30964-0] Status 400: Missing HTTP protocol string!

Not sure if it's anything to be concerned about. Any idea how to fix this?

thanks,
Chris

[mistwang]

Probably some bad robot sending bad HTTP request.

[anewday]

Is that similar to this:

INFO	[58.x.x.x:36048-0] Status 400: Bad HTTP protocol string: _____

I see a lot of these on the logs.