import socket
import select


#python.exe C:\Users\Yannay\PycharmProjects\serveralot\Server.py


def send_waiting_messages(wlist, sendMsg):
#get list of open sockets

    for msg in sendMsg:
        (client_socket, data) = msg

        if client_socket in wlist:
            client_socket.send(data)
            sendMsg.remove(msg)






server_socket = socket.socket()
server_socket.bind(('0.0.0.0', 13))
server_socket.listen(5)

open_client_sockets = []
sendMsg = []


while True:

    #get lists of clients
    rlist, wlist, xlist = select.select([server_socket] + open_client_sockets, open_client_sockets, [])

    for s in rlist:
        if s is server_socket:
            (new_socket, address) = server_socket.accept()
            open_client_sockets.append(new_socket)



        else:
            try:
                data = s.recv(1024)
            except:
                open_client_sockets.remove(s)
                continue


            #when client disconnecting he sends "" to the server - he sends nothing
            if data == "" or data == "exit":
                open_client_sockets.remove(s)
                sendMsg = [item for item in sendMsg if item[0] != s]

                print "Connection with client closed \n"
            else:
                sendMsg.append((s, "Hello, " + data))

                print "New data from client: "
                print data + "\n"


    send_waiting_messages(wlist, sendMsg)



server_socket.close()