Fix 400 Bad Request

[joanhey]

I found the problem with the Feature Tests in Adapterman.

The test stop, and never finish, when testing a bad request.
The problem is that the client is waiting for the body or close.

Testing direct with curl:

and wait here, till I press Ctrl+c

Now:

The curios thing is that the 400 Bad Request is Unit tested in this repo without problems.
For that we need more Feature Tests.

All the Adapterman Feature Tests work with Workerman.
When they are more polished, I'll create a PR to add it to Workerman.

Update: perhaps will be better to close the connection, like you want.

[walkor]

Thanks