def start_server(self, server_ip, server_port):
"""Start server
Arguments:
server_ip: IP address of server
server_port: port on server to accept network transactions
Return:
True if server created successfully, false otherwise
"""
valid_server = True
"""Attempt to create server"""
try:
self.server = ServerObj(self.music_player,
localaddr=(server_ip, server_port))
except socket.gaierror:
print "@@ Error binding address. Check your input."
valid_server = False
except:
print "@@ Server creation error. Please try again!"
valid_server = False
"""If server created, make thread for server, and make client"""
if valid_server == True:
self.server_thread = NetworkThread("server", self.server)
self.server_thread.start()
valid_client = self.connect_to_server(server_ip, server_port)
if valid_client == False:
self.destroy_server()
valid_server = False
self.connected = NOT_CONNECTED
else:
self.connected = NETWORK_SERVER
else:
if (self.server != None):
self.server.terminate()
self.server = None
return valid_server
class NetworkHandler():
"""Primary interface to handle network interaction"""
def __init__(self, music_player, gui):
"""constructor for the network handler"""
self.music_player = music_player
self.gui = gui
self.server = None
self.client = None
self.server_thread = None
self.client_thread = None
self.connected = NOT_CONNECTED #integer flag indicating connection state
def connect_to_server(self, server_ip, server_port):
"""Connect to a pre-existing server for collaboration.
Arguments:
server_ip: IP address of server to connect to
server_port: Port of server to connect to
Return:
True if connection successful, False otherwise
"""
valid_client = True
"""Check if the address could be reached!"""
valid_address = True
'''
Commented out in order to allow connection to an OSX server from Windows
OSX to Windows and Windows to Windows function with this code included
Seems like a firewalling issue, but isn't
try:
socket.gethostbyaddr(server_ip)
except socket.gaierror:
print "@@ Invalid server address!"
valid_address = False
valid_client = False
except:
print "@@ Failed to create client!"
valid_address = False
valid_client = False
'''
"""Try to open test connection to server"""
if valid_address == True:
test_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
try:
test_socket.connect((server_ip, server_port))
test_socket.shutdown(2)
except:
print "@@ Cannot connect test socket!"
valid_address = False
"""If address reachable, then connect to server"""
if valid_address == True:
"""Open client"""
try:
self.client = Client(self.music_player, self.gui, server_ip,
server_port)
except socket.gaierror:
print "@@ Server address error. Check your input."
valid_client = False
except ClientNetworkError:
print "@@ Client pipeline has error!"
valid_client = False
except:
print "@@ Client creation error:", sys.exc_info()[0]
valid_client = False
if self.client != None and valid_client == True:
try:
self.client.Loop()
except:
valid_client = False
print "@@ Deathly error when first client loop run!"
if valid_client == False:
self.client.terminate()
self.client = None
self.connected = NOT_CONNECTED
"""Create client thread if client was created"""
if valid_client == True:
print "@@ Valid client"
self.client_thread = NetworkThread("client", self.client)
self.client_thread.start()
self.connected = NETWORK_CLIENT
else:
valid_client = False
return valid_client
def start_server(self, server_ip, server_port):
"""Start server
Arguments:
server_ip: IP address of server
server_port: port on server to accept network transactions
Return:
True if server created successfully, false otherwise
"""
valid_server = True
"""Attempt to create server"""
try:
self.server = ServerObj(self.music_player,
localaddr=(server_ip, server_port))
except socket.gaierror:
print "@@ Error binding address. Check your input."
valid_server = False
except:
print "@@ Server creation error. Please try again!"
valid_server = False
"""If server created, make thread for server, and make client"""
if valid_server == True:
self.server_thread = NetworkThread("server", self.server)
self.server_thread.start()
valid_client = self.connect_to_server(server_ip, server_port)
if valid_client == False:
self.destroy_server()
valid_server = False
self.connected = NOT_CONNECTED
else:
self.connected = NETWORK_SERVER
else:
if (self.server != None):
self.server.terminate()
self.server = None
return valid_server
def terminate_connections(self):
if self.connected == NOT_CONNECTED:
pass
elif self.connected == NETWORK_CLIENT:
self.destroy_client()
elif self.connected == NETWORK_SERVER:
self.destroy_client()
self.destroy_server()
self.connected = NOT_CONNECTED
def destroy_server(self):
if self.server != None:
self.server.notify_end()
self.server.Loop()
if self.server_thread != None:
self.server_thread.terminate()
if self.server != None:
self.server.terminate()
self.server_thread = None
self.server = None
def destroy_client(self):
if self.client != None:
self.client.Loop()
if self.client_thread != None:
self.client_thread.terminate()
if self.client != None:
self.client.terminate()
self.client_thread = None
self.client = None
def get_server_ip(self):
"""Get IP address of the server if one is active"""
pass
def send_note(self, note):
"""send note wrapper method"""
if self.connected != NOT_CONNECTED:
self.client.send_note(note)
def send_volume(self, volume, track_id):
"""send volume wrapper method"""
if self.connected != NOT_CONNECTED:
self.client.send_volume(volume, track_id)
def send_tempo(self, tempo):
"""send tempo wrapper method"""
if self.connected != NOT_CONNECTED:
self.client.send_tempo(tempo)
def send_reverb(self, reverb, track_id):
"""send reverb wrapper method"""
if self.connected != NOT_CONNECTED:
self.client.send_reverb(reverb, track_id)
def send_session(self, session):
"""send session wrapper method"""
if self.connected != NOT_CONNECTED:
self.client.send_session(session)
def request_session(self):
"""Request music session from server to application's client"""
if self.connected != NOT_CONNECTED:
self.client.request_session()