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server.py
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server.py
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import socket
import threading
import pickle as pk
from datetime import datetime
from threading import *
class mainServer(threading.Thread):
def __init__(self, max_connection):
threading.Thread.__init__(self)
self.host = 'localhost'
self.semaphore = Semaphore(max_connection)
self.port = 3456
self.serv = socket.socket()
print("Central server is live")
self.serv.bind((self.host, self.port))
self.serv.listen(max_connection)
self.files = []
self.keys = ['peer_id', 'file_name', 'date_added']
print("Get connected at", self.host, "on port number", self.port)
def run(self):
while True:
client, addr = self.serv.accept()
print("Connected to", addr[0], "Port at", addr[1])
request = pk.loads(client.recv(1024))
if request[0] == 1:
print("Peer", addr[1], "Add new file")
self.semaphore.acquire()
self.register(request[1], request[2], str(datetime.now()))
ret = "File Registered Successfully."
client.send(bytes(ret, 'utf-8'))
self.semaphore.release()
client.close()
elif request[0] == 2:
print("Peer", addr[1], "Searching for a file")
self.semaphore.acquire()
ret_data = pk.dumps(self.search_data(request[1]))
client.send(ret_data)
self.semaphore.release()
client.close()
elif request[0] == 3:
print("Peer", addr[1], "Listing all files")
self.semaphore.acquire()
ret_data = pk.dumps(self.all_data())
client.send(ret_data)
self.semaphore.release()
client.close()
else:
continue
def register(self, peer_id, file_name, date):
entry = [str(peer_id), file_name, str(date)]
self.files.insert(0, dict(zip(self.keys, entry)))
def search_data(self, file_name):
ret = []
for item in self.files:
if item['file_name'] == file_name:
entry = [item['peer_id'], item['file_name'], item['date_added']]
ret.insert(0, dict(zip(self.keys, entry)))
return ret, self.keys
def all_data(self):
return self.files, self.keys
# Main
print("Welcome. Server is about to go live")
server = mainServer(2)
server.start()