class TCP():
def __init__(self, _core):
print("TCP Protocol Startup...")
self.core = _core
self.config = self.core.server.config
def start(self):
self.setupTCP()
self.startTCPTasks()
def setupTCP(self):
self.tcpManager = QueuedConnectionManager()
self.tcpReader = QueuedConnectionReader(self.tcpManager, 0)
self.tcpWriter = ConnectionWriter(self.tcpManager, 0)
self.tcpListener = QueuedConnectionListener(self.tcpManager, 0)
self.tcpSocket = self.tcpManager.openTCPServerRendezvous(
self.config.TCPPORT, self.config.BACKLOG)
self.tcpListener.addConnection(self.tcpSocket)
print("Started Server on: ", self.config.HOSTNAME, self.config.TCPPORT)
def startTCPTasks(self):
taskMgr.add(self.tcpListenerTask, "tcpListenerTask", 0)
print("TCP Listener Started")
taskMgr.add(self.tcpReaderTask, "tcpReaderTask", -10)
print("TCP Reader Started")
taskMgr.add(self.tcpDisconnectionHandler, "tcpDisconnectionHandler",
20)
print("TCP Disconnection Handler Started")
# TCP Listener Task
def tcpListenerTask(self, task):
"""
Accept new incoming connection from clients, related to TCP
"""
# Handle new connection
if self.tcpListener.newConnectionAvailable():
rendezvous = PointerToConnection()
netAddress = NetAddress()
newConnection = PointerToConnection()
if self.tcpListener.getNewConnection(rendezvous, netAddress,
newConnection):
newConnection = newConnection.p()
# Tell the reader about the new TCP connection
self.tcpReader.addConnection(newConnection)
# Handle the connection depending on persistent or not
if self.core.server.isPersistent:
self.core.handleConnection(generateUUID(), newConnection,
netAddress)
else:
self.core.createPlayerObject(generateUUID(), newConnection,
netAddress)
print("Server: New Connection from -",
str(netAddress.getIpString()))
else:
print("Server: Connection Failed from -",
str(netAddress.getIpString()))
return Task.cont
def tcpReaderTask(self, task):
"""
Handle any data from clients by sending it to the Handlers.
"""
while 1:
(datagram, data, opcode) = self.tcpNonBlockingRead(self.tcpReader)
if opcode is MSG_NONE:
# Do nothing or use it as some 'keep_alive' thing.
break
else:
# Handle it
self.core.packetManager.handlePacket(opcode, data,
datagram.getAddress())
return Task.cont
# TCP NonBlockingRead??
def tcpNonBlockingRead(self, qcr):
"""
Return a datagram collection and type if data is available on
the queued connection udpReader
"""
if self.tcpReader.dataAvailable():
datagram = NetDatagram()
if self.tcpReader.getData(datagram):
data = DatagramIterator(datagram)
opcode = data.getUint8()
else:
data = None
opcode = MSG_NONE
else:
datagram = None
data = None
opcode = MSG_NONE
# Return the datagram to keep a handle on the data
return (datagram, data, opcode)
# TCP Disconnection Handler
def tcpDisconnectionHandler(self, task):
# Check for resets
if self.tcpManager.resetConnectionAvailable():
resetConnection = PointerToConnection()
self.tcpManager.getResetConnection(resetConnection)
for client in self.core.server.clients:
if self.core.server.clients[
client].connection == resetConnection.p():
del self.core.server.clients[client]
self.tcpReader.removeConnection(resetConnection.p())
print("Removed Connection:", resetConnection.p())
print('Current Clients:', self.core.server.clients)
break
return Task.cont
def sendPacket(self, _pkt, _connection):
self.tcpWriter.send(_pkt, _connection)
def sendBroadcast(self, _pkt, _skipif=None):
for client in self.serverManager.clients:
if _skipif == client:
pass
else:
conn = self.serverManager.clients[client].connection
self.tcpWriter.send(_pkt, conn)
class TCP():
def __init__(self, _core):
print ("TCP Protocol Startup...")
self.core = _core
self.config = self.core.server.config
def start(self):
self.setupTCP()
self.startTCPTasks()
def setupTCP(self):
self.tcpManager = QueuedConnectionManager()
self.tcpReader = QueuedConnectionReader(self.tcpManager, 0)
self.tcpWriter = ConnectionWriter(self.tcpManager, 0)
self.tcpListener = QueuedConnectionListener(self.tcpManager, 0)
self.tcpSocket = self.tcpManager.openTCPServerRendezvous(self.config.TCPPORT, self.config.BACKLOG)
self.tcpListener.addConnection(self.tcpSocket)
print ("Started Server on: ", self.config.HOSTNAME, self.config.TCPPORT)
def startTCPTasks(self):
taskMgr.add(self.tcpListenerTask, "tcpListenerTask", 0)
print ("TCP Listener Started")
taskMgr.add(self.tcpReaderTask, "tcpReaderTask", -10)
print ("TCP Reader Started")
taskMgr.add(self.tcpDisconnectionHandler, "tcpDisconnectionHandler", 20)
print ("TCP Disconnection Handler Started")
# TCP Listener Task
def tcpListenerTask(self, task):
"""
Accept new incoming connection from clients, related to TCP
"""
# Handle new connection
if self.tcpListener.newConnectionAvailable():
rendezvous = PointerToConnection()
netAddress = NetAddress()
newConnection = PointerToConnection()
if self.tcpListener.getNewConnection(rendezvous, netAddress, newConnection):
newConnection = newConnection.p()
# Tell the reader about the new TCP connection
self.tcpReader.addConnection(newConnection)
# Handle the connection depending on persistent or not
if self.core.server.isPersistent:
self.core.handleConnection(generateUUID(), newConnection, netAddress)
else:
self.core.createPlayerObject(generateUUID(),newConnection, netAddress)
print ("Server: New Connection from -", str(netAddress.getIpString()))
else:
print ("Server: Connection Failed from -", str(netAddress.getIpString()))
return Task.cont
def tcpReaderTask(self, task):
"""
Handle any data from clients by sending it to the Handlers.
"""
while 1:
(datagram, data, opcode) = self.tcpNonBlockingRead(self.tcpReader)
if opcode is MSG_NONE:
# Do nothing or use it as some 'keep_alive' thing.
break
else:
# Handle it
self.core.packetManager.handlePacket(opcode, data, datagram.getAddress())
return Task.cont
# TCP NonBlockingRead??
def tcpNonBlockingRead(self, qcr):
"""
Return a datagram collection and type if data is available on
the queued connection udpReader
"""
if self.tcpReader.dataAvailable():
datagram = NetDatagram()
if self.tcpReader.getData(datagram):
data = DatagramIterator(datagram)
opcode = data.getUint8()
else:
data = None
opcode = MSG_NONE
else:
datagram = None
data = None
opcode = MSG_NONE
# Return the datagram to keep a handle on the data
return (datagram, data, opcode)
# TCP Disconnection Handler
def tcpDisconnectionHandler(self, task):
# Check for resets
if self.tcpManager.resetConnectionAvailable():
resetConnection = PointerToConnection()
self.tcpManager.getResetConnection(resetConnection)
for client in self.core.server.clients:
if self.core.server.clients[client].connection == resetConnection.p():
del self.core.server.clients[client]
self.tcpReader.removeConnection(resetConnection.p())
print ("Removed Connection:", resetConnection.p())
print ('Current Clients:', self.core.server.clients)
break
return Task.cont
def sendPacket(self, _pkt, _connection):
self.tcpWriter.send(_pkt, _connection)
def sendBroadcast(self, _pkt, _skipif=None):
for client in self.serverManager.clients:
if _skipif == client:
pass
else:
conn = self.serverManager.clients[client].connection
self.tcpWriter.send(_pkt, conn)
class Server:
def __init__(self):
self.port = 5555
self.addr = "127.0.0.1"
self.backlog = 7
self.active_connections = dict()
self.start = False
self.connect()
def connect(self) -> None:
# Handle connections and terminations
self.manager = QueuedConnectionManager()
# Wait for clients connection requests
self.listener = QueuedConnectionListener(self.manager, 0)
# Buffers incoming data from active connection
self.reader = QueuedConnectionReader(self.manager, 0)
# Transmit PyDatagrams to active connection
self.writer = ConnectionWriter(self.manager, 0)
# Open TCP Rendezvous to accept client connections with a limit
self.socket = self.manager.openTCPServerRendezvous(
self.port, self.backlog)
self.listener.addConnection(self.socket)
print("Server listening on port %s...." % str(self.port))
# Listen for mew incoming connections
taskMgr.add(self.handle_incoming_connections,
"Poll the connection listener", -39)
# Listen for new datagrams
taskMgr.add(self.handle_connection_data,
"Poll the connection reader", -40)
# Listen for dropped connections
taskMgr.add(self.handle_dropped_connections,
"Poll the dropped connection listener", -41)
# See if game can be started
taskMgr.add(self.start_game, "Start Game", -42)
def start_game(self, task_data: Task) -> Task:
if len(self.active_connections) == self.backlog:
self.start = True
return Task.cont
def handle_incoming_connections(self, task_data: Task) -> Task:
if self.listener.newConnectionAvailable():
rendezvous = PointerToConnection()
net_addr = NetAddress()
new_connection = PointerToConnection()
if self.listener.getNewConnection(rendezvous, net_addr, new_connection):
new_connection = new_connection.p()
# Keep track of our active connections
self.active_connections[str(
new_connection.this)] = new_connection
# Start reading the new connection
self.reader.addConnection(new_connection)
print("%s just connected" % str(new_connection))
return Task.cont
def handle_connection_data(self, task_data: Task) -> Task:
if self.reader.dataAvailable():
# Catch the incoming data
datagram = NetDatagram()
if self.reader.getData(datagram):
name = self.handle_client_message(datagram)
broadcast = f"Everyone, welcome {name} to the game!"
self.broadcast_message(broadcast)
return Task.cont
def handle_dropped_connections(self, task_data: Task) -> Task:
if self.manager.resetConnectionAvailable():
connection_pointer = PointerToConnection()
self.manager.getResetConnection(connection_pointer)
lost_connection = connection_pointer.p()
print("% s disconnected from server" % str(lost_connection))
del self.active_connections[str(lost_connection.this)]
self.manager.closeConnection(lost_connection)
return Task.cont
def handle_client_message(self, message: str) -> str:
iterator = PyDatagramIterator(message)
return iterator.getString()
def get_connections_count(self) -> int:
return len(self.active_connections)
def send_personal_message(self, message: str, client: PointerToConnection) -> None:
datagram = self.create_new_datagram(message)
self.writer.send(datagram, client)
def broadcast_message(self, message: str) -> None:
datagram = self.create_new_datagram(message)
for client in self.active_connections:
self.writer.send(datagram, self.active_connections[client])
def create_new_datagram(self, message: str) -> PyDatagram:
new_datagram = PyDatagram()
new_datagram.addString(message)
return new_datagram
def terminate_all_clients(self) -> None:
for client in self.active_connections:
self.reader.removeConnection(client)
self.active_connections = list()
def terminate_specific_client(self, client: PointerToConnection) -> None:
self.reader.removeConnection(client)
del self.active_connections[str(client)]
class Client(DirectObject):
def __init__(self,
host,
port,
timeout=3000,
compress=False,
connectionStateChangedHandler=None):
DirectObject.__init__(self)
self.connectionStateChangedHandler = connectionStateChangedHandler
self.myConnection = None
self.host = host
self.port = port
self.timeout = timeout
self.compress = compress
self.cManager = QueuedConnectionManager()
self.cReader = QueuedConnectionReader(self.cManager, 0)
self.cWriter = ConnectionWriter(self.cManager, 0)
# By default, we are not connected
self.connected = False
self.passedData = []
self.connect(self.host, self.port, self.timeout)
def cleanup(self):
self.removeAllTasks()
def startPolling(self):
self.doMethodLater(0.1, self.tskDisconnectPolling,
"clientDisconnectTask")
def connect(self, host, port, timeout=3000):
# Connect to our host's socket
self.myConnection = self.cManager.openTCPClientConnection(
host, port, timeout)
if self.myConnection:
self.myConnection.setNoDelay(True)
self.myConnection.setKeepAlive(True)
print "Connected"
self.cReader.addConnection(
self.myConnection) # receive messages from server
self.connected = True # Let us know that we're connected
self.startPolling()
if self.connectionStateChangedHandler:
self.connectionStateChangedHandler.handleConnection()
else:
print "Unable to connect"
if self.connectionStateChangedHandler:
self.connectionStateChangedHandler.handleFailure()
def tskDisconnectPolling(self, task):
if not self.connected:
return Task.done
# TODO: Hacky sending nothing to force disconnect triggers
#self.sendData()
# Also checking for dataAvailable on reader will trigger the connection disconnected
self.cReader.dataAvailable()
# TODO: Confirm this works for client side (to both game server and master server)
while self.cManager.resetConnectionAvailable():
connPointer = PointerToConnection()
self.cManager.getResetConnection(connPointer)
connection = connPointer.p()
# Remove the connection we just found to be "reset" or "disconnected"
self.cReader.removeConnection(connection)
# Let us know that we are not connected
self.connected = False
print "disconnected"
if self.connectionStateChangedHandler:
self.connectionStateChangedHandler.handleDisconnection()
return Task.again
def processData(self, netDatagram):
myIterator = PyDatagramIterator(netDatagram)
return self.decode(myIterator.getString())
def encode(self, data, compress=False):
# encode(and possibly compress) the data with rencode
return rencode.dumps(data, compress)
def decode(self, data):
# decode(and possibly decompress) the data with rencode
return rencode.loads(data)
def sendData(self, data=None):
myPyDatagram = PyDatagram()
myPyDatagram.addString(self.encode(data, self.compress))
self.cWriter.send(myPyDatagram, self.myConnection)
def passData(self, data):
self.passedData.append(data)
def getData(self):
data = self.passedData
self.passedData = []
while self.cReader.dataAvailable():
datagram = NetDatagram()
if self.cReader.getData(datagram):
data.append(self.processData(datagram))
return data
class Server(DirectObject):
# TODO: Perhaps a better way to do this?
handleNewConnection = None
handleLostConnection = None
def __init__(self, port, backlog=1000, compress=False):
DirectObject.__init__(self)
self.port = port
self.compress = compress
self.cManager = QueuedConnectionManager()
self.cListener = QueuedConnectionListener(self.cManager, 0)
self.cReader = QueuedConnectionReader(self.cManager, 0)
self.cWriter = ConnectionWriter(self.cManager, 0)
self.passedData = []
self.connect(port, backlog)
self.startPolling()
def connect(self, port, backlog):
# Bind to our socket
tcpSocket = self.cManager.openTCPServerRendezvous(port, backlog)
self.cListener.addConnection(tcpSocket)
def startPolling(self):
self.addTask(self.tskListenerPolling, "serverListenTask", -40)
self.addTask(self.tskDisconnectPolling, "serverDisconnectTask", -39)
def tskListenerPolling(self, task):
if self.cListener.newConnectionAvailable():
rendezvous = PointerToConnection()
netAddress = NetAddress()
newConnection = PointerToConnection()
if self.cListener.getNewConnection(rendezvous, netAddress,
newConnection):
newConnection = newConnection.p()
newConnection.setNoDelay(True)
newConnection.setKeepAlive(True)
if self.handleNewConnection:
self.handleNewConnection(newConnection)
self.cReader.addConnection(
newConnection) # Begin reading connection
return Task.cont
def tskDisconnectPolling(self, task):
while self.cManager.resetConnectionAvailable():
connPointer = PointerToConnection()
self.cManager.getResetConnection(connPointer)
connection = connPointer.p()
# Remove the connection we just found to be "reset" or "disconnected"
self.cReader.removeConnection(connection)
if self.handleLostConnection:
self.handleLostConnection(connection)
return Task.cont
def processData(self, netDatagram):
myIterator = PyDatagramIterator(netDatagram)
return self.decode(myIterator.getString())
def encode(self, data, compress=False):
# encode(and possibly compress) the data with rencode
return rencode.dumps(data, compress)
def decode(self, data):
# decode(and possibly decompress) the data with rencode
return rencode.loads(data)
def sendData(self, data, con):
myPyDatagram = PyDatagram()
myPyDatagram.addString(self.encode(data, self.compress))
self.cWriter.send(myPyDatagram, con)
def passData(self, data, connection):
self.passedData.append((data, connection))
def getData(self):
data = self.passedData
self.passedData = []
while self.cReader.dataAvailable():
datagram = NetDatagram()
if self.cReader.getData(datagram):
data.append(
(datagram.getConnection(), self.processData(datagram)))
return data
class SocketTCP(ShowBase):
def __init__(self, _parent=None):
ShowBase.__init__(self, windowType = 'none')
print ("TCP Protocol Startup...")
#self.parent = _parent
#self.config = self.parent.server.config
# tmp config
self.tcpport = 6000
self.backlog = 10
self.hostname = '127.0.0.1'
self.sendPacketQueue = None
def startAll(self):
self.setupTCP()
self.startTCPTasks()
def setupTCP(self):
self.tcpManager = QueuedConnectionManager()
self.tcpReader = QueuedConnectionReader(self.tcpManager, 0)
self.tcpWriter = ConnectionWriter(self.tcpManager, 0)
self.tcpListener = QueuedConnectionListener(self.tcpManager, 0)
self.tcpSocket = self.tcpManager.openTCPServerRendezvous(self.tcpport, self.backlog)
self.tcpListener.addConnection(self.tcpSocket)
print ("Started Server on: ", self.hostname, self.tcpport)
def startTCPTasks(self):
taskMgr.add(self.tcpListenerTask, "tcpListenerTask", 0)
print ("TCP Listener Started")
taskMgr.add(self.tcpReaderTask, "tcpReaderTask", -10)
print ("TCP Reader Started")
taskMgr.add(self.tcpDisconnectionHandler, "tcpDisconnectionHandler", 20)
print ("TCP Disconnection Handler Started")
taskMgr.add(self.tcpQueuedSendHandlerTask, "tcpQueuedSendhandlerTask", -11)
print ("TCP Queued Send Handler Started")
# TCP Listener Task
def tcpListenerTask(self, task):
"""
Accept new incoming connection from clients, related to TCP
"""
# Handle new connection
if self.tcpListener.newConnectionAvailable():
rendezvous = PointerToConnection()
netAddress = NetAddress()
newConnection = PointerToConnection()
if self.tcpListener.getNewConnection(rendezvous, netAddress, newConnection):
newConnection = newConnection.p()
# Tell the reader about the new TCP connection
self.tcpReader.addConnection(newConnection)
#self.core.createPlayerObject(generateUUID(),newConnection, netAddress)
print ("Server: " + str(generateUUID), str(netAddress.getIpString()))
else:
print ("Server: Connection Failed from -", str(netAddress.getIpString()))
return Task.cont
def tcpReaderTask(self, task):
"""
Handle any data from clients by sending it to the Handlers.
"""
while 1:
(datagram, data, opcode) = self.tcpNonBlockingRead(self.tcpReader)
if opcode is MSG_NONE:
# Do nothing or use it as some 'keep_alive' thing.
break
else:
# Handle it
#self.core.packetManager.handlePacket(opcode, data, datagram.getAddress())
print("Set Packet Handler to handle packets!")
return Task.cont
# TCP NonBlockingRead??
def tcpNonBlockingRead(self, qcr):
"""
Return a datagram collection and type if data is available on
the queued connection udpReader
"""
if self.tcpReader.dataAvailable():
datagram = NetDatagram()
if self.tcpReader.getData(datagram):
data = DatagramIterator(datagram)
opcode = data.getUint8()
else:
data = None
opcode = MSG_NONE
else:
datagram = None
data = None
opcode = MSG_NONE
# Return the datagram to keep a handle on the data
return (datagram, data, opcode)
# TCP Disconnection Handler
def tcpDisconnectionHandler(self, task):
# Check for resets
if self.tcpManager.resetConnectionAvailable():
resetConnection = PointerToConnection()
self.tcpManager.getResetConnection(resetConnection)
print(str(resetConnection.p()))
#for client in self.core.server.clients:
# if self.core.server.clients[client].connection == resetConnection.p():
# del self.core.server.clients[client]
# self.tcpReader.removeConnection(resetConnection.p())
# print ("Removed Connection:", resetConnection.p())
# print ('Current Clients:', self.core.server.clients)
# break
return Task.cont
def sendPacket(self, _pkt, _connection):
self.tcpWriter.send(_pkt, _connection)
def sendBroadcast(self, _pkt, _skipif=None):
for client in self.serverManager.clients:
if _skipif == client:
pass
else:
conn = self.serverManager.clients[client].connection
self.tcpWriter.send(_pkt, conn)
def addPacketToSendQueue(self, _data):
# _data should contain packet and connection
pass
def addPacketToBroadcastQueue(self, _pkt, _connectionList):
# _data should contain the pkt data and _connectionList should be the valid connections for that broadcast
# Could have a grouping system that put clients together and broadcasts go per group
pass
def tcpQueuedSendHandlerTask(self, task):
if not self.sendPacketQueue.isEmpty():
self.addPacketToSendQueue(self.sendPacketQueue.removeFromQue())
return Task.cont
