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server.py
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server.py
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#!/usr/bin/env python2
import os
import socket
import controller
import threading
import visuals
class Server():
def __init__(self, host, port, gamecontroller):
self.host = host
self.port = port
self.connection = None
self.client = None
self.clientaddr = None
self.data = None
self.update_msg = None
self.gamecontroller = gamecontroller
self.lights = visuals.Lights()
self.subsection = None
def signal_handler(self, signal, frame):
self.lights.set_lights_off()
sys.exit(0)
def start(self):
try:
self.connection = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.connection.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
self.connection.bind((self.host, self.port))
self.connection.listen(5)
except Exception as e:
print("[!] Error starting server: " + str(e))
def stop(self):
self.connection.close()
def recv(self):
try:
self.client, self.clientaddr = self.connection.accept()
print("[+] Connection received from " + str(self.clientaddr))
self.data = self.client.recv(2048)
except Exception as e:
print("[!] Error receiving from client: " + str(e))
def process(self):
if(self.data.strip("\r\n") == "update"):
self.update_msg = self.gamecontroller.get_game_data()
print("[+] Sending game data...")
print("[+] Current grid position: ", self.gamecontroller.get_grid_position())
self.client.sendall(self.update_msg)
self.client.close()
self.update_lights()
def process_exists(pid_str):
try:
os.kill(int(pid_str), 0)
except OSError:
return False
else:
return True
def update_lights(self):
# read /tmp/fallback.pid. if it has a p_id, check if p active
# if p not active replace with own, if active, keep trying
#self.lights.update(self.gamecontroller.get_partial_grid())
#if self.lights == None:
# return
self.lights.update(self.gamecontroller.get_partial_grid())
#try:
# pid_valid = False
# f = open("/tmp/fallback.pid", "w+")
# pid = f.readline()
# if pid != "" and pid != str(os.getpid()) and self.process_exists(pid):
# pid_valid = True
# if pid_valid:
# f.close()
# return
# else:
# f.seek(0)
# f.write(str(os.getpid()))
# f.close()
# self.lights.update(self.gamecontroller.get_partial_grid())
#except IOError as err:
# print ("err")
def main():
server = Server('', 8000)
server.start()
while(True):
server.recv()
server.process()
if __name__ == '__main__':
main()