/**
* Receives some data from a client once a connection
* has been established. This will block until the client
* calls <code>request(Object)</code> but by establishing
* a connection.
*
* @return the <code>Object</code> sent by the client.
*/
public Object request() //throws IllegalStateException
{
if (currentServerState == SERVER_STATE_RECEIVED)
{
throw new InvalidOperationException("Cannot call request() twice on ConnectionServer without replying to the client first.");
}
ConnectionClientMessage msg = (ConnectionClientMessage)currentInputChannel.read();
if (currentServerState == SERVER_STATE_CLOSED)
{
if (msg is ConnectionClientOpenMessage)
{
//channel to use to reply to client
toClient = ((ConnectionClientOpenMessage)msg).replyChannel;
setAltingChannel(furtherRequestIn);
currentInputChannel = furtherRequestIn;
//create a new msg for connection established
//don't know if client implementation will have finished with
//message after connection closed
this.msg = new ConnectionServerMessage();
}
else
{
throw new InvalidOperationException("Invalid message received from client");
}
}
currentServerState = SERVER_STATE_RECEIVED;
return(msg.data);
}
/**
* Receives some data back from the server after
* <code>request(Object)</code> has been called.
*
* @return the <code>Object</code> sent from the server.
*/
public Object reply()// throws
{
try
{
//moved it out from the if statement below and had to initialize it with empty object - KP
ConnectionServerMessage serverReply = new ConnectionServerMessage();
if (currentClientState != CLIENT_STATE_MADE_REQ)
{
try
{
serverReply = (ConnectionServerMessage)fromServer.read();
}
catch (InvalidOperationException)
{
throw new InvalidOperationException("Cannot call reply() on a ConnectionClient that is not waiting for a reply.");
}
}
//check whether the server closed the connection
currentClientState = serverReply.open ? CLIENT_STATE_OPEN : CLIENT_STATE_CLOSED;
if (serverReply.open)
{
currentClientState = CLIENT_STATE_OPEN;
}
else
{
currentClientState = CLIENT_STATE_CLOSED;
release();
}
return(serverReply.data);
}
catch (InvalidOperationException)
{
throw;
}
}
