protected static void checkEOF(FileRegion region, long writtenBytes) throws IOException {
if (writtenBytes < region.count()) {
throw new EOFException(
"Expected to be able to write "
+ region.count()
+ " bytes, but only wrote "
+ writtenBytes);
}
}
private void sendFile0(FileRegion region, ChannelFuture future) {
if (flushTaskInProgress == null) {
flushTaskInProgress = new FlushTask(region, future);
try {
// the first FileRegion to flush so trigger it now!
doFlushFileRegion(region, future);
} catch (Throwable cause) {
region.close();
future.setFailure(cause);
}
return;
}
FlushTask task = flushTaskInProgress;
for (; ; ) {
FlushTask next = task.next;
if (next == null) {
break;
}
task = next;
}
// there is something that needs to get flushed first so add it as next in the chain
task.next = new FlushTask(region, future);
}