How to detect a network-disconnect

Scripting Issues
1

hi again =)

i’m back with another tricky problem^^
this time i have trouble with the network. i need to detect unexpected network-disconnects.
i already have a working network with a QueuedConnectionManager.
and resetConnectionAvailable returns true if i close one of my connections. but i need to know which one was closed so i can backup the player’s data and remove him from my world.
if possible i’d like to avoid to check every single player if his connection is still alive since i might end up with a lot of players.

any ideas or hints?

2

Is that what you need?

3

hm… not really. maybe… all i need is the connection which was lost.
when a palyer connects to the server i assign a playerID to this connection. i’m managing all data with this playerID like positions,items etc. so when a connection is lost i need to know which one or i cant store/backup all the players data. ( a regular logout is no problem but a lot of people use windows so noone can garantuee that they will log out properly :wink: )

4

I don’t think the connection still exists when it’s lost, does it?

5

When resetConnectionAvailable() returns true, you are expected to call getResetConnection() to retrieve the particular connection that was reset. The interface is similar to that of QueuedConnectionListener: you must pass a PointerToConnection to the function call, and then use the p() method to extract the actual connection.

David

6

hm… aahm. ok so far the theorie (even if i dont really get it)… my main problem is… which pointer do i need and to which connectrion does it have to point??
so far i have

#when i start the server...:
      self.tcpSocket = self.cManager.openTCPServerRendezvous(9099, 1000)
      self.connection = self.cListener.addConnection(self.tcpSocket)

#......lots of stuff between it .... and the following one is part of a task which runs with 10fps
    if self.cManager.resetConnectionAvailable() == True:
      print self.cManager.getResetConnection(self.connection)

… which gives me the error
TypeError: QueuedConnectionManager::get_reset_connection() argument 1 must be PointerTo_Connection, not int
since i dont know what exactly is requred…

7

Try:

connPointer = PointerToConnection()
self.cManager.getResetConnection(connPointer)
connection = connPointer.p()

Now the connection object matches the connection that has been shut down. If you have stored a mapping of connection -> client (for instance, in a dictionary) as each client connected, you can use this object to figure out which client is now gone.

David

8

thx again drwr … worked like a charm =)