PING kills LoPy after a successful HTTP request to a server



  • Using socket to connect to an HTTP server, then closing the socket, the LoPy keeps going just fine, until I simply ping the LoPy's IP address. It returns a single ICMP reply then crashes.

    The firmware is the most recent version to date. Am I doing something wrong?

    Thanks,
    Ulde

    Here's the code:

    boot.py

    import os
    from machine import UART
    uart = UART(0, 115200)
    os.dupterm(uart)

    main.py

    import os
    import network
    from network import WLAN
    import socket
    import time

    WLAN_SSID = 'myssid'
    WLAN_SEC = WLAN.WEP
    WLAN_KEY = '456c7***********726461'

    wlan = WLAN(mode=WLAN.STA)
    wlanconnectingtime = time.time()
    wlan.connect(WLAN_SSID, auth=(WLAN_SEC, WLAN_KEY), timeout = 10000)
    while not wlan.isconnected():
    time.sleep_ms(50)
    print(wlan.ifconfig())
    print(os.uname())

    s = socket.socket()
    s.connect(socket.getaddrinfo("google.com", 80)[0][-1])
    s.write(b"GET / HTTP/1.0\r\n\r\n")
    print(s.read(4096))
    s.close()
    print('CLOSED')

    while True:
    print(time.time())
    time.sleep(1)

    The terminal dump:

    rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
    ets Jun 8 2016 00:22:57

    rst:0x10 (RTCWDT_RTC_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
    ...
    entry 0x4009fc9c
    ('192.168.0.52', '255.255.255.0', '192.168.0.1', '192.168.0.1')
    (sysname='LoPy', nodename='LoPy', release='1.9.2.b2', version='v1.8.6-796-g489fafa0 on 2017-10-15', machine='LoPy with ESP32', lorawan='1.0.0')
    b'HTTP/1.0 302 Found\r\nCache-Control: private\r\nContent-Type: text/html; charset=UTF-8\r\nReferrer-Policy: no-referrer\r\nLocation: http://www.google.it/?gfe_rd=cr&dcr=0&ei=BFn_WfKtI9Pw8Aet_pWgAQ\r\nContent-Length: 268\r\nDate: Sun, 05 Nov 2017 18:31:32 GMT\r\n\r\n<HTML><HEAD><meta http-equiv="content-type" content="text/html;charset=utf-8">\n<TITLE>302 Moved</TITLE></HEAD><BODY>\n<H1>302 Moved</H1>\nThe document has moved\n<A HREF="http://www.google.it/?gfe_rd=cr&dcr=0&ei=BFn_WfKtI9Pw8Aet_pWgAQ">here</A>.\r\n</BODY></HTML>\r\n'
    CLOSED
    2
    3
    4
    5
    6
    7

    And the ping "killer":

    $ ping 192.168.0.52
    PING 192.168.0.52 (192.168.0.52): 56 data bytes
    64 bytes from 192.168.0.52: icmp_seq=0 ttl=255 time=6.143 ms
    Request timeout for icmp_seq 1
    Request timeout for icmp_seq 2
    Request timeout for icmp_seq 3
    ^C


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