Chief Delphi - pynetworktables check server connection

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pynetworktables check server connection

I am working on something for this weekend, and I was wondering if there was a way to check and see if the pynetworktables client has a way to see if it is connected to the server on the robot? If there isnt a direct way, is there a way to hack around and check?

Re: pynetworktables check server connection

Yes, NetworkTables has a class called IRemoteConnectionListener that you can use with the AddConnectionListener/RemoveConnectionListener. I use the following code.

Code:

class RemoteListener(IRemoteConnectionListener):

    '''Calls a function when a table value is updated'''

    

    def __init__(self, connect_fn, disconnect_fn):

        '''fn must be a callable that takes (value)'''

        IRemoteConnectionListener.__init__(self)

        self.connect_fn = connect_fn

        self.disconnect_fn = disconnect_fn

        

    def attach(self, table):

        self.table = table

        table.AddConnectionListener(self, True)

        

    def detach(self):

        if hasattr(self, 'table'):

            self.table.RemoveConnectionListener(self)

        

    def Connected(self, remote):

        self.connect_fn(remote)

        

    def Disconnected(self, remote):

        self.disconnect_fn(remote)

Re: pynetworktables check server connection

Thanks for the reply. While looking through all the functions, I found an IsConnected function in the NetworkTables library, and that seems to work just fine. Thanks though.