Test failures w/ Jetty 9.3

[slandelle]

When trying to upgrade test suite to Jetty 9.3, some tests fail randomly (racy).

Symptom is that the connection gets closed without Netty reading the response.
This is either a Netty (4.0.33.Final) bug or a Jetty one.

[slandelle]

This really looks like a Netty bug.

• Using latest stable 4.0.33-Final
• OSX 10.11.1
• Hotspot 1.8.0_66
• AUTO_READ is set to false and read is first triggered by handler in channelActive

Steps to reproduce:

• checkout jetty-9.3 branch
• run mvn -Dtest=org.asynchttpclient.BasicAuthTest test

basicAuthInputStreamTest will randomly fail.

I'm pretty sure that's a Netty bug as:

• the AsyncHttpClientHandler is only notified with "channelInactive". Other methods are never called.
• wireshark logs show that the 401 response was indeed received prior to FIN.

2015-11-18 00:48:00,268 [AsyncHttpClient1-4-1] DEBUG org.asynchttpclient.netty.channel.NettyConnectListener - Using non-cached Channel [id: 0x23c2ee72, /127.0.0.1:49692 => /127.0.0.1:49688] for POST '/'
2015-11-18 00:48:00,287 [AsyncHttpClient1-4-1] DEBUG org.asynchttpclient.netty.handler.AsyncHttpClientHandler - Channel [id: 0x23c2ee72, /127.0.0.1:49692 :> /127.0.0.1:49688] inactive

[slandelle]

cc @trustin @normanmaurer I'm pretty sure this is a Netty bug. Do I really have to produce a pure Netty reproducer for opening an issue on Netty, or is this sufficient?