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[#3539] Correctly handle EPOLLRDHUP

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Motivation:

As we missed to correctly handle EPOLLRDHUP we produce an IOException which is unnessary. This leads
to have exceptionCaught(...) methods called.

Modifications:

When EPOLLRDHUP was received just close the socket and fail all pending writes.

Result:

Correctly handle of EPOLLRDHUP and so not miss-leading exceptions.
This commit is contained in:
Norman Maurer 2015-04-10 15:23:00 +02:00
parent ab158a6ea4
commit e48b8f5c49
2 changed files with 12 additions and 16 deletions
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10
transport-native-epoll/src/main/java/io/netty/channel/epoll/AbstractEpollStreamChannel.java
View File

@ -569,11 +569,11 @@ public abstract class AbstractEpollStreamChannel extends AbstractEpollChannel {
@Override
void epollRdHupReady() {
if (isActive()) {
epollInReady();
} else {
closeOnRead(pipeline());
}
// Just call closeOnRead(). There is no need to trigger a read as this
// will result in an IOException anyway.
//
// See https://github.com/netty/netty/issues/3539
closeOnRead(pipeline());
}
@Override

18
transport-native-epoll/src/main/java/io/netty/channel/epoll/EpollEventLoop.java
View File

@ -305,26 +305,22 @@ final class EpollEventLoop extends SingleThreadEventLoop {
AbstractEpollChannel ch = channels.get(fd);
if (ch != null && ch.isOpen()) {
boolean close = (ev & Native.EPOLLRDHUP) != 0;
boolean read = (ev & Native.EPOLLIN) != 0;
boolean write = (ev & Native.EPOLLOUT) != 0;
AbstractEpollUnsafe unsafe = (AbstractEpollUnsafe) ch.unsafe();
if (close) {
// We need to check if the channel is still open before try to trigger the
// callbacks.
// See https://github.com/netty/netty/issues/3443
if ((ev & Native.EPOLLRDHUP) != 0 && ch.isOpen()) {
unsafe.epollRdHupReady();
}
// We need to check if the channel is still open before try to trigger the
// callbacks as otherwise we may trigger an IllegalStateException when try
// to access the file descriptor.
//
// See https://github.com/netty/netty/issues/3443
if (write && ch.isOpen()) {
if ((ev & Native.EPOLLOUT) != 0 && ch.isOpen()) {
// force flush of data as the epoll is writable again
unsafe.epollOutReady();
}
if (read && ch.isOpen()) {
if ((ev & Native.EPOLLIN) != 0 && ch.isOpen()) {
// Something is ready to read, so consume it now
unsafe.epollInReady();
}