[ https://issues.jboss.org/browse/WFLY-12304?page=com.atlassian.jira.plugin... ] Clebert Suconic edited comment on WFLY-12304 at 9/4/19 7:24 PM: ---------------------------------------------------------------- It's definitely the netty-xnio-transport not being able to handle DefaultFileRegion I tried debugging netty-xnio-transport, around AbstractXnioSocketChannel, and it's not possible to handle FileRegion It seems to me that AbstractXnioSocketChannel is missing some calls on he chain as the write is never called for any FileRegion: https://github.com/xnio/netty-xnio-transport/blob/b301ada03be308ea2751ae6... Debugging this more carefully, I realized the object sent is actually an implementation of FileRegion, and the write is not being completed. was (Author: clebert.suconic): It's definitely the netty-xnio-transport not being able to handle DefaultFileRegion I tried debugging netty-xnio-transport, around AbstractXnioSocketChannel, and it's not possible to handle FileRegion It seems to me that AbstractXnioSocketChannel is missing some calls on he chain as the write is never called for any FileRegion: https://github.com/xnio/netty-xnio-transport/blob/0.1/src/main/java/org/x... Debugging this more carefully, I realized the object sent is actually an implementation of FileRegion, and the write is not being completed. -- This message was sent by Atlassian Jira (v7.13.5#713005)