public void Join(SpreadConnection c, string groupName)
{
// Check if this group has already been joined.
if (this.connection != null)
{
throw new SpreadException("Already joined.");
}
// Set member variables.
this.connection = c;
this.name = groupName;
// Error check the name.
byte[] bytes;
try {
bytes = System.Text.Encoding.ASCII.GetBytes(name);
}
catch (Exception e) {
throw new SpreadException("Encoding not supported: " + e);
}
for (int i = 0; i < bytes.Length; i++)
{
// Make sure the byte (character) is within the valid range.
if ((bytes[i] < 36) || (bytes[i] > 126))
{
throw new SpreadException("Illegal character in group name.");
}
}
// Get a new message.
SpreadMessage joinMessage = new SpreadMessage();
// Set the group we're sending to.
joinMessage.AddGroup(name);
// Set the service type.
joinMessage.ServiceType = SpreadMessage.JOIN_MESS;
// Send the message.
connection.Multicast(joinMessage);
}
//------------------------------ Private ----------------------------------------
private void send(string pToGroup, string pMessage, bool pIsSelfDiscard)
{
SpreadMessage _spreadMsg = new SpreadMessage();
_spreadMsg.IsAgreed = true; // _spreadMsg.IsSafe = true;
_spreadMsg.IsSelfDiscard = pIsSelfDiscard;
_spreadMsg.AddGroup(pToGroup);
_spreadMsg.Data = System.Text.Encoding.ASCII.GetBytes(pMessage);
// Send msg and wait for response
try {
connection.Multicast(_spreadMsg);
// if ( ! pIsSelfDiscard) {
// SyncLock.Wait();
// }
}
catch (Exception _ex) {
T.LogStatus("Multicast Exception: " + _ex);
throw;
}
}
public void Leave()
{
// Check if we can leave.
if (connection == null)
{
throw new SpreadException("No group to leave.");
}
// Get a new message.
SpreadMessage leaveMessage = new SpreadMessage();
// Set the group we're sending to.
leaveMessage.AddGroup(name);
// Set the service type.
leaveMessage.ServiceType = SpreadMessage.LEAVE_MESS;
// Send the message.
connection.Multicast(leaveMessage);
// No longer connected.
connection = null;
}
