The below code is a simple TCP echo server. The folks using it claim "it is going down evey now and again". Any thoughts on how this could be improved would be really appreciated, particularly if they would improve the reliability, Thanks.

import select, argparse, socket

def server_socket(ip, port):
    serv = socket.socket()
    try:
        serv.bind((ip, port))
    except:
        if (ip != ''):
            print("Failed to bind to " + ip + " on port " + str(port) + " exiting" )
        else:
            print("Failed to bind to all on port " + str(port) + " exiting" )
        exit()

    if (ip != ''):
        print("Bound to " + ip + " on port " + str(port) + " echoing tcp" )
    else:
        print("Bound to all on port " + str(port) + " echoing tcp" )

    serv.listen(1)
    inputlist = [serv,]

    while 1:
        inputready,_,_ = select.select(inputlist,[],[], 20)

        if not inputready:
            for i in inputlist:
                if i != serv:
                    i.close()
                    inputlist.remove(i)
                    print("connection timeout")

        for i in inputready:
            if i == serv:
                client, address = serv.accept()
                inputlist.append(client)
                print("connection open from " + str(address))
            else:
                try:
                    data = i.recv(1024)
                    print("received " + str(len(data)) + " bytes"),
                    print(" \""+ data +"\"")
                    if data:
                        i.send(data)
                    else:
                        i.close()
                        inputlist.remove(i)
                        print("connection closed")
                except:
                    i.close()
                    inputlist.remove(i)
                    print("connection closed")


if __name__ == '__main__':
    parser = argparse.ArgumentParser(prog = "TCP Echo server")

    parser.add_argument('-i', '--ip', type=str, default='', help = "IP to bind to")
    parser.add_argument('port', type=int, help = "Port to bind to")

    args = parser.parse_args()
    server_socket(args.ip, args.port)