private void initialHandshake() throws EOFException {
String userName = session.getUserID().getUsername();
int strLen = userName.length();
// Inform the server that we have connected by sending a hello message
// with the name of this user
byte[] helloBuf =
new byte[Proto.ClientMessageType.HELLO.size() + strLen + Proto.SIGNATURE_SIZE];
helloBuf[0] = (byte) Proto.ClientMessageType.HELLO.ordinal();
helloBuf[1] = (byte) 0; // pad
helloBuf[2] = (byte) ((strLen >> 8) & 0xff);
helloBuf[3] = (byte) (strLen & 0xff);
System.arraycopy(userName.getBytes(), 0, helloBuf, 4, strLen);
try {
slaveSocket.send(sign(helloBuf));
} catch (IOException ex) {
throw new RuntimeException(ex);
}
AppXrw.logger.info("Broadcast slave Hello message for user " + userName);
// Get the welcome message from the server. This contains the client id
// Note: because the master hub broadcasts to all slaves, there is a chance
// there might be irrelevant messages queued up for this
// slave. These should be ignored. This come from the fact that it takes
// some time after the slave joins the connection for the master to become
// aware of it and to compose and send the welcome message. During this time
// if there are any incoming messages from the X server they will be
// forwarded to this slave even if it has not yet been officially welcomed.
// Since the content of these messages will be reflected in the welcome message
// and the slave can't really do anything until it is welcomed we need
// to ignore these messages.
ServerMessageType type = null;
do {
type = getMessageType();
} while (type != ServerMessageType.WELCOME);
// TODO: eventually we should add a timeout
// Skip 3 bytes of pad
bufQueue.nextByte();
bufQueue.nextShort();
clientId = bufQueue.nextInt();
client.setClientId(clientId);
windowParents.clear();
// Read the initial window state synchronization
// part of the welcome message
int numWins = bufQueue.nextInt();
AppXrw.logger.info("numWins = " + numWins);
for (int i = 0; i < numWins; i++) {
syncWindowStateNext();
}
// All windows have been defined. Now assign the parents
for (WindowXrw win : windowParents.keySet()) {
Integer parentWid = windowParents.get(win);
if (parentWid != null) {
WindowXrw parentWin = client.lookupWindow(parentWid.intValue());
win.setParent(parentWin);
}
}
windowParents.clear();
client.updateSlaveWindows();
}
