Function _ping_thread

clients/client-linux.py:204–240

(host, mark, port)

monitorServer = {}

def _ping_thread(host, mark, port):
    lostPacket = 0
    packet_queue = Queue(maxsize=PING_PACKET_HISTORY_LEN)

    while True:
        # flush dns , every time.
        IP = host
        if host.count(':') < 1:  # if not plain ipv6 address, means ipv4 address or hostname
            try:
                if PROBE_PROTOCOL_PREFER == 'ipv4':
                    IP = socket.getaddrinfo(host, None, socket.AF_INET)[0][4][0]
                else:
                    IP = socket.getaddrinfo(host, None, socket.AF_INET6)[0][4][0]
            except Exception:
                pass

        if packet_queue.full():
            if packet_queue.get() == 0:
                lostPacket -= 1
        try:
            b = timeit.default_timer()
            socket.create_connection((IP, port), timeout=1).close()
            pingTime[mark] = int((timeit.default_timer() - b) * 1000)
            packet_queue.put(1)
        except socket.error as error:
            if error.errno == errno.ECONNREFUSED:
                pingTime[mark] = int((timeit.default_timer() - b) * 1000)
                packet_queue.put(1)
            #elif error.errno == errno.ETIMEDOUT:
            else:
                lostPacket += 1
                packet_queue.put(0)

        if packet_queue.qsize() > 30:
            lostRate[mark] = float(lostPacket) / packet_queue.qsize()

        time.sleep(INTERVAL)

def _net_speed():
    while True: