kopia lustrzana https://github.com/espressif/esp-idf
167 wiersze
7.5 KiB
Python
167 wiersze
7.5 KiB
Python
import os
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import re
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import select
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import socket
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import struct
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import subprocess
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import time
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from threading import Event, Thread
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import dpkt
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import dpkt.dns
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import ttfw_idf
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from tiny_test_fw import DUT
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from tiny_test_fw.Utility import console_log
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def get_dns_query_for_esp(esp_host):
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dns = dpkt.dns.DNS(b'\x00\x00\x01\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x01')
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dns.qd[0].name = esp_host + u'.local'
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console_log('Created query for esp host: {} '.format(dns.__repr__()))
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return dns.pack()
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def get_dns_answer_to_mdns(tester_host):
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dns = dpkt.dns.DNS(b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
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dns.op = dpkt.dns.DNS_QR | dpkt.dns.DNS_AA
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dns.rcode = dpkt.dns.DNS_RCODE_NOERR
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arr = dpkt.dns.DNS.RR()
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arr.cls = dpkt.dns.DNS_IN
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arr.type = dpkt.dns.DNS_A
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arr.name = tester_host
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arr.ip = socket.inet_aton('127.0.0.1')
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dns.an.append(arr)
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console_log('Created answer to mdns query: {} '.format(dns.__repr__()))
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return dns.pack()
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def get_dns_answer_to_mdns_lwip(tester_host, id):
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dns = dpkt.dns.DNS(b'\x5e\x39\x84\x00\x00\x01\x00\x01\x00\x00\x00\x00\x0a\x64\x61\x76\x69\x64'
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b'\x2d\x63\x6f\x6d\x70\x05\x6c\x6f\x63\x61\x6c\x00\x00\x01\x00\x01\xc0\x0c'
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b'\x00\x01\x00\x01\x00\x00\x00\x0a\x00\x04\xc0\xa8\x0a\x6c')
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dns.qd[0].name = tester_host
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dns.an[0].name = tester_host
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dns.an[0].ip = socket.inet_aton('127.0.0.1')
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dns.an[0].rdata = socket.inet_aton('127.0.0.1')
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dns.id = id
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print('Created answer to mdns (lwip) query: {} '.format(dns.__repr__()))
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return dns.pack()
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def mdns_server(esp_host, events):
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UDP_IP = '0.0.0.0'
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UDP_PORT = 5353
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MCAST_GRP = '224.0.0.251'
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TESTER_NAME = u'tinytester.local'
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TESTER_NAME_LWIP = u'tinytester-lwip.local'
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QUERY_TIMEOUT = 0.2
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sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
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sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEPORT, 1)
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sock.setblocking(False)
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sock.bind((UDP_IP, UDP_PORT))
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mreq = struct.pack('4sl', socket.inet_aton(MCAST_GRP), socket.INADDR_ANY)
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sock.setsockopt(socket.IPPROTO_IP, socket.IP_ADD_MEMBERSHIP, mreq)
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last_query_timepoint = time.time()
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while not events['stop'].is_set():
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try:
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current_time = time.time()
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if current_time - last_query_timepoint > QUERY_TIMEOUT:
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last_query_timepoint = current_time
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if not events['esp_answered'].is_set():
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sock.sendto(get_dns_query_for_esp(esp_host), (MCAST_GRP, UDP_PORT))
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if not events['esp_delegated_answered'].is_set():
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sock.sendto(get_dns_query_for_esp(esp_host + '-delegated'), (MCAST_GRP, UDP_PORT))
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timeout = max(0, QUERY_TIMEOUT - (current_time - last_query_timepoint))
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read_socks, _, _ = select.select([sock], [], [], timeout)
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if not read_socks:
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continue
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data, addr = sock.recvfrom(1024)
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dns = dpkt.dns.DNS(data)
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if len(dns.qd) > 0 and dns.qd[0].type == dpkt.dns.DNS_A:
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if dns.qd[0].name == TESTER_NAME:
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console_log('Received query: {} '.format(dns.__repr__()))
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sock.sendto(get_dns_answer_to_mdns(TESTER_NAME), (MCAST_GRP, UDP_PORT))
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elif dns.qd[0].name == TESTER_NAME_LWIP:
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console_log('Received query: {} '.format(dns.__repr__()))
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sock.sendto(get_dns_answer_to_mdns_lwip(TESTER_NAME_LWIP, dns.id), addr)
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if len(dns.an) > 0 and dns.an[0].type == dpkt.dns.DNS_A:
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console_log('Received answer from {}'.format(dns.an[0].name))
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if dns.an[0].name == esp_host + u'.local':
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console_log('Received answer to esp32-mdns query: {}'.format(dns.__repr__()))
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events['esp_answered'].set()
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if dns.an[0].name == esp_host + u'-delegated.local':
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console_log('Received answer to esp32-mdns-delegate query: {}'.format(dns.__repr__()))
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events['esp_delegated_answered'].set()
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except socket.timeout:
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break
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except dpkt.UnpackError:
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continue
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def test_examples_protocol_mdns(env, config):
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"""
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steps: |
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1. obtain IP address + init mdns example
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2. get the dut host name (and IP address)
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3. check the mdns name is accessible
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4. check DUT output if mdns advertized host is resolved
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"""
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dut1 = env.get_dut('mdns-test', 'examples/protocols/mdns', dut_class=ttfw_idf.ESP32DUT, app_config_name=config)
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# check and log bin size
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binary_file = os.path.join(dut1.app.binary_path, 'mdns_test.bin')
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bin_size = os.path.getsize(binary_file)
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ttfw_idf.log_performance('mdns-test_bin_size', '{}KB'.format(bin_size // 1024))
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# 1. start mdns application
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dut1.start_app()
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# 2. get the dut host name (and IP address)
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specific_host = dut1.expect(re.compile(r'mdns hostname set to: \[([^\]]+)\]'), timeout=30)[0]
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mdns_server_events = {'stop': Event(), 'esp_answered': Event(), 'esp_delegated_answered': Event()}
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mdns_responder = Thread(target=mdns_server, args=(str(specific_host), mdns_server_events))
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try:
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ip_address = dut1.expect(re.compile(r' eth ip: ([^,]+),'), timeout=30)[0]
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console_log('Connected to AP with IP: {}'.format(ip_address))
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except DUT.ExpectTimeout:
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raise ValueError('ENV_TEST_FAILURE: Cannot connect to AP')
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try:
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# 3. check the mdns name is accessible
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mdns_responder.start()
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if not mdns_server_events['esp_answered'].wait(timeout=30):
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raise ValueError('Test has failed: did not receive mdns answer within timeout')
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if not mdns_server_events['esp_delegated_answered'].wait(timeout=30):
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raise ValueError('Test has failed: did not receive mdns answer for delegated host within timeout')
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# 4. check DUT output if mdns advertized host is resolved
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dut1.expect(re.compile(r'mdns-test: Query A: tinytester.local resolved to: 127.0.0.1'), timeout=30)
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dut1.expect(re.compile(r'mdns-test: gethostbyname: tinytester-lwip.local resolved to: 127.0.0.1'), timeout=30)
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dut1.expect(re.compile(r'mdns-test: getaddrinfo: tinytester-lwip.local resolved to: 127.0.0.1'), timeout=30)
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# 5. check the DUT answers to `dig` command
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dig_output = subprocess.check_output(['dig', '+short', '-p', '5353', '@224.0.0.251',
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'{}.local'.format(specific_host)])
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console_log('Resolving {} using "dig" succeeded with:\n{}'.format(specific_host, dig_output))
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if not ip_address.encode('utf-8') in dig_output:
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raise ValueError('Test has failed: Incorrectly resolved DUT hostname using dig'
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"Output should've contained DUT's IP address:{}".format(ip_address))
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finally:
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mdns_server_events['stop'].set()
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mdns_responder.join()
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@ttfw_idf.idf_example_test(env_tag='Example_EthKitV1')
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def test_examples_protocol_mdns_default(env, _):
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test_examples_protocol_mdns(env, 'eth_def')
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@ttfw_idf.idf_example_test(env_tag='Example_EthKitV1')
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def test_examples_protocol_mdns_socket(env, _):
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test_examples_protocol_mdns(env, 'eth_socket')
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@ttfw_idf.idf_example_test(env_tag='Example_EthKitV1')
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def test_examples_protocol_mdns_custom_netif(env, _):
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test_examples_protocol_mdns(env, 'eth_custom_netif')
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if __name__ == '__main__':
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test_examples_protocol_mdns_default()
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