internal virtual SelectionKeys registerForSelection(Selector selector,
bool allowInput, bool allowOutput, bool useBlockingOnly)
{
Selector.Direction operations = Selector.Direction.NONE;
if (allowInput)
{
operations |= Selector.Direction.READ;
}
// do not register for output if there is nothing to write
bool hasSomeOutgoingFrames =
channelWriter.hasSomeOutgoingFrames();
if (allowOutput && hasSomeOutgoingFrames)
{
operations |= Selector.Direction.WRITE;
}
Socket key = null;
if (operations != 0)
{
try
{
key = connection.register(selector, operations, useBlockingOnly);
}
//TODO replace with proper exception
catch
//catch (ClosedChannelException ex)
{
// ignore, will never happen
}
}
SelectionKeys keys = new SelectionKeys();
keys.key = key;
keys.blockingChannelReadyForReading =
((operations & Selector.Direction.READ) != 0) &&
connection.readingQueue != null &&
connection.readingQueue.HasDataOrEOF();
keys.blockingChannelReadyForWriting = (operations & Selector.Direction.WRITE) != 0;
return(keys);
}
internal virtual Socket register(Selector selector,
Selector.Direction operations, bool useBlockingOnly)
{
if (useBlockingOnly)
{
return(null);
}
if (connectedChannel != null)
{
selector.Add(connectedChannel, operations);
return(connectedChannel);
}
else if (datagramChannel != null)
{
selector.Add(datagramChannel, operations);
return(datagramChannel);
}
else
{
return(null);
}
}
