A REST call through haproxy (see config below) causes the following stacktrace when haproxy closes the connection:

13:20:08,834 INFO [org.infinispan.rest.embedded.netty4.i18n] (nioEventLoopGroup-9-1) RESTEASY018512: Exception caught by handler: java.io.IOException: Connection reset by peer
at sun.nio.ch.FileDispatcherImpl.read0(Native Method) [rt.jar:1.8.0_141]
at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:39) [rt.jar:1.8.0_141]
at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223) [rt.jar:1.8.0_141]
at sun.nio.ch.IOUtil.read(IOUtil.java:192) [rt.jar:1.8.0_141]
at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:380) [rt.jar:1.8.0_141]
at io.netty.buffer.PooledUnsafeDirectByteBuf.setBytes(PooledUnsafeDirectByteBuf.java:288) [netty-all-4.1.8.Final.jar:4.1.8.Final]
at io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:1100) [netty-all-4.1.8.Final.jar:4.1.8.Final]
at io.netty.channel.socket.nio.NioSocketChannel.doReadBytes(NioSocketChannel.java:367) [netty-all-4.1.8.Final.jar:4.1.8.Final]
at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:118) [netty-all-4.1.8.Final.jar:4.1.8.Final]
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:642) [netty-all-4.1.8.Final.jar:4.1.8.Final]
at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:565) [netty-all-4.1.8.Final.jar:4.1.8.Final]
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:479) [netty-all-4.1.8.Final.jar:4.1.8.Final]
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:441) [netty-all-4.1.8.Final.jar:4.1.8.Final]
at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:858) [netty-all-4.1.8.Final.jar:4.1.8.Final]
at io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:144) [netty-all-4.1.8.Final.jar:4.1.8.Final]
at java.lang.Thread.run(Thread.java:748) [rt.jar:1.8.0_141]

--------------------------------------------------------------------

[root@ose3x-base conf]# cat haproxy.config
global
maxconn 4096
pidfile /var/run/haproxy.pid
daemon

defaults
mode http
retries 3
option redispatch
maxconn 2000
timeout connect 5000
timeout client 50000
timeout server 50000

frontend public
bind :80
mode http
tcp-request inspect-delay 5s
tcp-request content accept if HTTP

1. Remove port from Host header
   http-request replace-header Host (.):. \1

default_backend jdg_default

backend openshift_default
mode http
option forwardfor
#option http-keep-alive
option http-pretend-keepalive

1. To configure custom default errors, you can either uncomment the
2. line below (server ... 127.0.0.1:8080) and point it to your custom
3. backend service or alternatively, you can send a custom 503 error.
   #server openshift_backend 127.0.0.1:8080
   errorfile 503 /var/lib/haproxy/conf/error-page-503.http

backend jdg_default

balance roundrobin

timeout check 5000ms

server node1 127.0.0.1:8080