public void RegisterSelector(java.nio.channels.Selector selector, int mode, Socket source, out int error)
{
error = 0;
if (jServerSocket != null)
{
// only accept operation, which included to the read list, is allowed for server sockets
if (mode != 0)
{
// error = 10038; //WSAENOTSOCK (Socket operation on nonsocket)
#if DEBUG
Console.WriteLine("RegisterSelector, invalid mode {0} for the server socket", mode);
#endif
return;
}
try
{
if (jServerSocketChannel.isBlocking())
{
/*
* A channel must be placed into non-blocking mode before being registered
* with a selector, and may not be returned to blocking mode until it has been
* deregistered.
*/
jServerSocketChannel.configureBlocking(false);
}
jServerSocketChannel.register(selector, java.nio.channels.SelectionKey.OP_ACCEPT, source);
}
catch (Exception e)
{
error = 10022; //WSAEINVAL (Invalid argument)
#if DEBUG
Console.WriteLine("Caught exception during RegisterSelector, register server socket - {0}: {1}\n{2}", e.GetType(), e.Message, e.StackTrace);
#endif
}
}
else
{
try
{
int ops = java.nio.channels.SelectionKey.OP_READ;
if (mode > 0)
{
if (jSocketChannel.isConnectionPending())
{
ops = java.nio.channels.SelectionKey.OP_CONNECT;
}
else
{
ops = java.nio.channels.SelectionKey.OP_WRITE;
}
}
if (jSocketChannel.isBlocking())
{
/*
* A channel must be placed into non-blocking mode before being registered
* with a selector, and may not be returned to blocking mode until it has been
* deregistered.
*/
jSocketChannel.configureBlocking(false);
}
jSocketChannel.register(selector, ops, source);
}
catch (Exception e)
{
error = 10022; //WSAEINVAL (Invalid argument)
#if DEBUG
Console.WriteLine("Caught exception during RegisterSelector, register client socket - {0}: {1}\n{2}", e.GetType(), e.Message, e.StackTrace);
#endif
}
}
}
public bool Poll_internal(SelectMode mode, int timeout, Socket source, out int error)
{
error = 0;
if (mode == SelectMode.SelectError && !jSocketChannel.isConnectionPending())
{
return(false);
}
java.nio.channels.Selector selector = java.nio.channels.Selector.open();
RegisterSelector(selector, ((mode == SelectMode.SelectRead)?0:1), source, out error);
if (error != 0)
{
error = 0;
GHSocketFactory.CloseSelector(selector);
return(mode == SelectMode.SelectError);
}
bool retVal = false;
long timeOutMillis = 1;
if (timeout < 0)
{
timeOutMillis = 0;
}
else if (timeout > 999)
{
timeOutMillis = (long)(timeout / 1000);
}
int readyCount = 0;
try
{
readyCount = selector.select(timeOutMillis);
}
catch (Exception e)
{
error = 10022; //WSAEINVAL (Invalid argument)
#if DEBUG
Console.WriteLine("Caught exception during Poll_internal selector.select - {0}: {1}\n{2}", e.GetType(), e.Message, e.StackTrace);
#endif
}
if (readyCount > 0)
{
if (jSocket != null && jSocketChannel.isConnectionPending())
{
bool status = false;
try
{
status = jSocketChannel.finishConnect();
}
catch (Exception e)
{
#if DEBUG
Console.WriteLine("Caught exception during Poll_internal, finishConnect - {0}: {1}\n{2}", e.GetType(), e.Message, e.StackTrace);
#endif
}
if (status)
{
retVal = (mode != SelectMode.SelectError);
}
else
{
retVal = (mode == SelectMode.SelectError);
}
}
else
{
retVal = true;
}
}
GHSocketFactory.CloseSelector(selector);
return(retVal);
}