class Connection:
    def __init__(self, username, password):
        # connect to the server
        self.username = username
        self.password = password

    def pingpong(self):
        # manage ping pongs etc

    def message(self, message, channel):
        # send message

class Web:
    def __init__(self):
        self.connections = []

    def new_user(self, username, password):
        if not any(c.username == username for c in self.connections):
            self.connections.append(Connection(username, password))

    def message(self, username, password, message, channel):
        for c in self.connections:
            if username == c.username and password == c.password:
                c.message(message, channel)
            else:
                raise "Invalid Login"