class SendingQueue():
''' Class to sending queue process '''
def __init__(self, server_address):
''' Create SendingQueue object '''
self.threads = []
# gevent provides a synchronized queue (locking is handled)
self.queue = queue.Queue()
self.socket_mgr = ClientSocket(server_address)
def add(self, segments):
''' A list of segments to the sending queue'''
for sgmt in segments:
self.queue.put(sgmt)
def send(self):
''' Iterate continuously looking to send entries in queue
'''
logger.debug("Started sending thread")
while True:
if self.queue.qsize():
self.socket_mgr.send(self.queue.get())
time.sleep(1) # send is non-blocking, don't over send
else:
time.sleep(3)
def start_sending(self, filename, port_list, segments, num_threads):
''' Start a separate thread to begin sending
from the send queue. Should be started before
breaking up files. As segments are added to
queue, it will send, until stop_sending is called.
'''
self.add(segments)
self.socket_mgr.connect(filename, port_list)
for i in range(num_threads):
self.threads.append(gevent.spawn(self.send))
return
def complete_sending(self):
''' Join all threads created during this send process.
This should be done between searching for new files
'''
# Wait till rest of send queue is empty
# ASSUME no more is being added at this point
logger.debug("Waiting for all segments to send before completing send")
while self.queue.qsize():
time.sleep(3)
# Wait till sending finished
while self.socket_mgr.num_currently_sending:
logger.debug("Waiting for (%d) segments to finish sending",
self.socket_mgr.num_currently_sending)
time.sleep(3)
# Kill any threads created
gevent.killall(self.threads, timeout=5)
self.threads = []
self.socket_mgr.disconnect()
class Client(object):
def __init__(self):
#create login window：
self.window = WindowLogin()
self.window.on_reset_button_click(self.clear_inputs)
self.window.on_login_button_click(self.send_login_data)
#self.window.on_window_close(self.exit)
#create chat window
self.window_chat = WindowChat()
#self.window_chat.on_window_close(self.exit)
#hide the chat window
self.window_chat.withdraw()
#####create the client socket
self.conn = ClientSocket()
self.response_handle_function = {}
self.response_handle_function[
RESPONSE_LOGIN_RESULT] = self.response_login_handle
self.response_handle_function[
RESPONSE_CHAT] = self.response_chat_handle
self.window_chat.on_send_button_click(self.send_chat_data)
#define the global variable and record user name
self.username = None
#flag running program
self.isrunning = True
def startup(self):
# Connect the client socket to the server
self.conn.connect()
# Since a message may be received at any time, the receiving message should be placed in the thread.
# The difference between sever and server is that sever waits for the client response by starting up in a loop.
# But each time the loop starts the child thread to see if there are any new user requests that need to be processed.
# The client only starts up once (mainloop is an infinite loop).
#Then we start the response_handle thread directly, enter the response_handle thread and loop through the child thread
t = Thread(target=self.response_handle)
t.start()
# openning the login window is an endless loop, so finally open it
self.window.mainloop()
def clear_inputs(self):
#clean up the window
self.window.clear_username()
self.window.clear_password()
def send_login_data(self):
#send the login message(login number and user name) to the server
#get the typed in password
username = self.window.get_username()
password = self.window.get_password()
# generate request text (encapsulation)
request_text = RequestProtocol.request_login_result(username, password)
#send request text to the server
self.conn.send_data(request_text)
def response_handle(self):
#Continuously receive new messages from the processing server（while true +thread）
#while self.isrunning:
while True:
recv_data = self.conn.recv_data()
#parsing message (one dictionary)
response_data = self.parse_response_data(recv_data)
#handle according to the message
handle_function = self.response_handle_function.get(
response_data['response_id'])
if handle_function:
handle_function(response_data)
#if response_data['response_id']==RESPONSE_LOGIN_RESULT:
#self.response_login_handle(response_data)
#elif response_data['response_id']==RESPONSE_CHAT:
#self.response_chat_handle(response_data)
#no used of self, removed self using static method
@staticmethod
def parse_response_data(recv_data):
#There are two kinds of messages that need to be processed:
# 1.Log in response from the server：1001|success|username|user id
# or 1001|failure|null
# 2.Chat server forwarding response：1002|sender's username|message
response_data_list = recv_data.split(DELIMITER)
####
response_data = {}
response_data['response_id'] = response_data_list[0]
if response_data['response_id'] == RESPONSE_LOGIN_RESULT:
response_data['result'] = response_data_list[1]
response_data['nickname'] = response_data_list[2]
response_data['username'] = response_data_list[3]
elif response_data['response_id'] == RESPONSE_CHAT:
response_data['nickname'] = response_data_list[1]
response_data['message'] = response_data_list[2]
return response_data
def response_login_handle(self, response_data):
#login resulr
print('Login result recieved')
result = response_data['result']
if result == '0':
print('Login Failed')
#The prompt box displays the title and content
showinfo('Login result', 'Login Failed,wrong information!')
return
showinfo('Login result', 'Login Success!')
nickname = response_data['nickname']
self.username = response_data['username']
print('%s has successfully login,nickname is %s' %
(self.username, nickname))
#Sets the title of the chat window
self.window_chat.set_title(nickname)
#Habitually refresh
self.window_chat.update()
#Display chat window, hide login window
self.window_chat.deiconify()
self.window.withdraw()
def send_chat_data(self):
#Gets the contents of the input box and sends it to the server
#Get input
message = self.window_chat.get_inputs()
#clear up input box
self.window_chat.clear_input()
#Splicing message encapsulation
request_text = RequestProtocol.request_chat(self.username, message)
#send message
self.conn.send_data(request_text)
#Show the sending message to the chat area:
self.window_chat.append_message('me', message)
def response_chat_handle(self, response_data):
#Get chat message respond from server
sender = response_data['nickname']
message = response_data['message']
self.window_chat.append_message(sender, message)
def exit(self):
#exit the program
self.is_running = False
self.conn.close()
sys.exit(0)
class Client(object):
def __init__(self):
#create a window for login
self.window = WindowLogin()
self.window.on_reset_button_click(self.clear_inputs)
self.window.on_login_button_click(self.send_login_data)
#self.window.on_window_close(self.exit)
#create window for chat
self.window_chat = WindowChat()
#self.window_chat.on_window_close(self.exit)
#hide chat window
self.window_chat.withdraw()
###create socket for client
self.conn = ClientSocket()
self.response_handle_function = {}
self.response_handle_function[
RESPONSE_LOGIN_RESULT] = self.response_login_handle
self.response_handle_function[
RESPONSE_CHAT] = self.response_chat_handle
self.window_chat.on_send_button_click(self.send_chat_data)
#define a global variable to recode username online
self.username = None
#Whether the program is running
self.isrunning = True
def startup(self):
#connect client socket to the server
self.conn.connect()
#Client may receive message at anytime, so we put this process in a thread
#in the server, we use a loop in start up function to wait for the response of client
#every loop we create a sub thread to check whether there is new client request
#In client we just need to start once, beacuse mainloop is an endless loop
#Then we start response_handle, and loop in sub thread
t = Thread(target=self.response_handle)
t.start()
#start login window is a endless loop, we put this at the last of the program
self.window.mainloop()
def clear_inputs(self):
#clear window
self.window.clear_username()
self.window.clear_password()
def send_login_data(self):
#send request, username and password to server
#get username and password input
username = self.window.get_username()
password = self.window.get_password()
#create a protocol and wrappe it
request_text = RequestProtocol.request_login_result(username, password)
#send it to server
self.conn.send_data(request_text)
def response_handle(self):
#continually accept data from server
#while self.isrunning:
while True:
recv_data = self.conn.recv_data()
#parse data(dictionary)
response_data = self.parse_response_data(recv_data)
#according to message processing,handle the data
handle_function = self.response_handle_function.get(
response_data['response_id'])
if handle_function:
handle_function(response_data)
#if response_data['response_id']==RESPONSE_LOGIN_RESULT:
#self.response_login_handle(response_data)
#elif response_data['response_id']==RESPONSE_CHAT:
#self.response_chat_handle(response_data)
#self is not used in a static function
@staticmethod
def parse_response_data(recv_data):
#There are two ways to handle messafe
#1. server send a login request 1001|success|nickname|username or 1001|fail|
#2. server send a chat request 1002|nickname|message
response_data_list = recv_data.split(DELIMITER)
####
response_data = {}
response_data['response_id'] = response_data_list[0]
if response_data['response_id'] == RESPONSE_LOGIN_RESULT:
response_data['result'] = response_data_list[1]
response_data['nickname'] = response_data_list[2]
response_data['username'] = response_data_list[3]
elif response_data['response_id'] == RESPONSE_CHAT:
response_data['nickname'] = response_data_list[1]
response_data['message'] = response_data_list[2]
return response_data
def response_login_handle(self, response_data):
#response login
print('Login result recieved')
result = response_data['result']
if result == '0':
print('Login Failed')
#print the title and content
showinfo('Login result', 'Login Failed,wrong information!')
return
showinfo('Login result', 'Login Success!')
nickname = response_data['nickname']
self.username = response_data['username']
print('%s has successfully login,nickname is %s' %
(self.username, nickname))
#set title of chat window
self.window_chat.set_title(nickname)
#refersh
self.window_chat.update()
#show the chat window and hide login window
self.window_chat.deiconify()
self.window.withdraw()
def send_chat_data(self):
#get message in the input box and send it to the server
#get message
message = self.window_chat.get_inputs()
#clear the input box
self.window_chat.clear_input()
#join message together and wrappe it
request_text = RequestProtocol.request_chat(self.username, message)
#send the message
self.conn.send_data(request_text)
#show the message client send in chat window
self.window_chat.append_message('me', message)
def response_chat_handle(self, response_data):
#receive the chat response by server
sender = response_data['nickname']
message = response_data['message']
self.window_chat.append_message(sender, message)
def exit(self):
#exit program
self.is_running = False
self.conn.close()
sys.exit(0)
