Socket/Server.py at master · masoudhaghbin/Socket · GitHub

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from socket import *
import threading
import time

RegisteredUsers = []
Demanders = []
index = 0
chainindex = 0
CanbeStream = 1
StreamDone = 1
requesterName = ""
requesterSocket = ""
serverport = 12000
serversocket = socket(AF_INET , SOCK_STREAM )
serversocket.bind((gethostname(), serverport))
serversocket.listen(3)
print "server is running "

# --------------------------------------------------------------------------------------
def register(name , Mysocket , addr):
    flag = True
    global RegisteredUsers
    for i in range(len(RegisteredUsers)):
        if(RegisteredUsers[i][0] == name or RegisteredUsers[i][2] == addr):
            flag = False
            break
        else:
            continue
    if(flag):
        # print "In register function !"
        RegisteredUsers.append([name , Mysocket , addr])
        print "Registerd users :" ,
        print RegisteredUsers
    return flag
# ---------------------------------------------------------------------------------------

def Bye(addr):
    flag = False
    global RegisteredUsers
    for i in range(len(RegisteredUsers)):
        if(RegisteredUsers[i][2] == addr):
            print "deleting " , RegisteredUsers[i]
            del RegisteredUsers[i]
            flag = True
            break
        else:
            continue
    return flag
# ---------------------------------------------------------------------------------------
def StreamRequest(addr , Filename):
    # print "We are in Stream Request function !"
    flag = False
    global requesterName
    global CanbeStream
    global StreamDone
    for i in range(len(RegisteredUsers)):
        if(RegisteredUsers[i][2] == addr):
            requesterName = RegisteredUsers[i][0]
            flag = True
            break
        else:
            continue
    print requesterName , "requested the file"
    if(flag):
        CanbeStream = 0
        StreamDone = 0
        for i in range(len(RegisteredUsers)):
            if(RegisteredUsers[i][0] != requesterName):
                RegisteredUsers[i][1].send("NewStream#"+Filename)
            else:
                continue
    else:
        return flag


# ---------------------------------------------------------------------------------------
def startChainingProcess(requesterSocket):
    # print "we are in this function with this Socket !"
    # print requesterName
    # print requesterSocket
    global chainindex
    requesterSocket.send("Stream#"+str(Demanders[chainindex]))
# ---------------------------------------------------------------------------------------
def main(connectedsocket , addr):
    while True:
        # print "in main"
        global RegisteredUsers
        global Demanders
        global index
        global chainindex
        global CanbeStream
        global StreamDone
        global requesterSocket
        clientCommand = connectedsocket.recv(1024)
        if(clientCommand[0:4] == "Reg#"):
            Clientname = clientCommand[4:]
            result = register(Clientname , connectedsocket , addr)
            # print "result is " ,
            # print result
            if(result):
                connectedsocket.send("Reg#OK")
                print "RegisteredUsers are :" , RegisteredUsers
            else:
                connectedsocket.send("Reg#NOK#NameUsedBeforeOrSameClient")
        elif(clientCommand[0:3] == "Bye"):
            # print "main -> second elif"
            addr = connectedsocket.getpeername()
            result = Bye(addr)
            if(result):
                connectedsocket.send("Bye#OK")
                print "RegisteredUsers are :" ,RegisteredUsers
            else:
                connectedsocket.send("Reg#NOK#NotFoundInUsers")
        elif(clientCommand[0:10] == "StreamReq#"):
            if(CanbeStream == 1):
                # CanbeStream = 0
                # StreamDone = 0
                Filename = clientCommand[10:]
                requesterSocket = connectedsocket
                # for i in range(len(RegisteredUsers)):
                #     if(RegisteredUsers[i][1] != requesterName):
                #         continue
                #     else:
                #         requesterSocket = RegisteredUsers[i][1]
                #         break
                addr = connectedsocket.getpeername()
                StreamRequest(addr , Filename)
            else:
                connectedsocket.send("StreamReq#NOK#SERVERBUSYNOW")
        elif(clientCommand[0:4] == "YEAH"):
            if(connectedsocket!=requesterSocket):
                ClientUdpPort = clientCommand[5:]
                print "client with port" , ClientUdpPort , "accepted !"
                Demanders.append(ClientUdpPort)
                index += 1
                # requesterSocket = ""
                if(index == len(RegisteredUsers)-1):
                    if(len(Demanders)!=0 ):
                        # for i in range(len(RegisteredUsers)):
                        #     if(RegisteredUsers[i][0] != requesterName):
                        #         continue
                        #     else:
                        #         requesterSocket = RegisteredUsers[i][1]
                        #         break
                        startChainingProcess(requesterSocket)
                    else:
                        CanbeStream = 1
                        StreamDone = 1
                        del Demanders[:]
                        index = 0
                        chainindex = 0
                        requesterSocket.send("StreamReq#NOK#NoOneWants")
                # connectedsocket.send("ok , I will send U!")
        elif(clientCommand[0:4] == "NOPE"):
            if(connectedsocket!=requesterSocket):
                index += 1
                if(index == len(RegisteredUsers) -1):
                    if(len(Demanders)!=0 ):
                        startChainingProcess(requesterSocket)
                    else:
                        CanbeStream = 1
                        StreamDone = 1
                        del Demanders[:]
                        index = 0
                        chainindex = 0
                        requesterSocket.send("StreamReq#NOK#NoOneWants")
                connectedsocket.send("ok , I wont send U!")
        elif(clientCommand[0:4] == "GOT#"):
            if(chainindex<len(Demanders) -1 ):
                chainindex+=1
                time.sleep(2)
                connectedsocket.send("Stream#"+Demanders[chainindex])
            else:
                requesterSocket.send("StreamReq#DONE")
                del Demanders[:]
                index = 0
                chainindex = 0
                CanbeStream = 1
                StreamDone = 1
        else:
            connectedsocket.send("Sorry! Not right now !")
        # connectedsocket.close()
        # print RegisteredUsers
# ----------------------------------------------------------------------------------------

while True:
        connectionsocket , addr = serversocket.accept()
        print "Got Connection from " , addr
        threading.Thread(target=main , args=(connectionsocket , addr ,)).start()
        # print "Im back here!"
        # print "Got Connection from " , addr
        # clientCommand = connectionsocket.recv(1024)
        # if(clientCommand[0:4] == "Reg#"):
        # 	Clientname = clientCommand[4:]
        # 	RegisteredUsers.append((Clientname , connectionsocket))
        # 	# print RegisteredUsers
        # 	connectionsocket.send("Registered Successfully!")
        # else:
        # 	connectionsocket.send("Sorry! Not right now !")
        # connectionsocket.close()
        # print RegisteredUsers


#for Break