1# This example code is in the Public Domain (or CC0 licensed, at your option.) 2 3# Unless required by applicable law or agreed to in writing, this 4# software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR 5# CONDITIONS OF ANY KIND, either express or implied. 6 7# -*- coding: utf-8 -*- 8 9from __future__ import print_function, unicode_literals 10 11import os 12import re 13import socket 14import sys 15from builtins import input 16from threading import Event, Thread 17 18import netifaces 19import ttfw_idf 20 21# ----------- Config ---------- 22PORT = 3333 23INTERFACE = 'eth0' 24# ------------------------------- 25 26 27def get_my_ip(type): 28 for i in netifaces.ifaddresses(INTERFACE)[type]: 29 return i['addr'].replace('%{}'.format(INTERFACE), '') 30 31 32class UdpServer: 33 34 def __init__(self, port, family_addr, persist=False): 35 self.port = port 36 self.family_addr = family_addr 37 self.socket = socket.socket(family_addr, socket.SOCK_DGRAM) 38 self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) 39 self.socket.settimeout(60.0) 40 self.shutdown = Event() 41 self.persist = persist 42 43 def __enter__(self): 44 try: 45 self.socket.bind(('', self.port)) 46 except socket.error as e: 47 print('Bind failed:{}'.format(e)) 48 raise 49 50 print('Starting server on port={} family_addr={}'.format(self.port, self.family_addr)) 51 self.server_thread = Thread(target=self.run_server) 52 self.server_thread.start() 53 return self 54 55 def __exit__(self, exc_type, exc_value, traceback): 56 if self.persist: 57 sock = socket.socket(self.family_addr, socket.SOCK_DGRAM) 58 sock.sendto(b'Stop', ('localhost', self.port)) 59 sock.close() 60 self.shutdown.set() 61 self.server_thread.join() 62 self.socket.close() 63 64 def run_server(self): 65 while not self.shutdown.is_set(): 66 try: 67 data, addr = self.socket.recvfrom(1024) 68 if not data: 69 return 70 data = data.decode() 71 print('Reply[' + addr[0] + ':' + str(addr[1]) + '] - ' + data) 72 reply = 'OK: ' + data 73 self.socket.sendto(reply.encode(), addr) 74 except socket.error as e: 75 print('Running server failed:{}'.format(e)) 76 raise 77 if not self.persist: 78 break 79 80 81@ttfw_idf.idf_example_test(env_tag='Example_WIFI_Protocols') 82def test_examples_protocol_socket_udpclient(env, extra_data): 83 """ 84 steps: 85 1. join AP 86 2. have the board connect to the server 87 3. send and receive data 88 """ 89 dut1 = env.get_dut('udp_client', 'examples/protocols/sockets/udp_client', dut_class=ttfw_idf.ESP32DUT) 90 # check and log bin size 91 binary_file = os.path.join(dut1.app.binary_path, 'udp_client.bin') 92 bin_size = os.path.getsize(binary_file) 93 ttfw_idf.log_performance('udp_client_bin_size', '{}KB'.format(bin_size // 1024)) 94 95 # start test 96 dut1.start_app() 97 98 ipv4 = dut1.expect(re.compile(r' IPv4 address: ([0-9]+\.[0-9]+\.[0-9]+\.[0-9]+)'), timeout=30)[0] 99 ipv6_r = r':'.join((r'[0-9a-fA-F]{4}',) * 8) # expect all 8 octets from IPv6 (assumes it's printed in the long form) 100 ipv6 = dut1.expect(re.compile(r' IPv6 address: ({})'.format(ipv6_r)), timeout=30)[0] 101 print('Connected with IPv4={} and IPv6={}'.format(ipv4, ipv6)) 102 103 # test IPv4 104 with UdpServer(PORT, socket.AF_INET): 105 server_ip = get_my_ip(netifaces.AF_INET) 106 print('Connect udp client to server IP={}'.format(server_ip)) 107 dut1.write(server_ip) 108 dut1.expect(re.compile(r'OK: Message from ESP32')) 109 # test IPv6 110 with UdpServer(PORT, socket.AF_INET6): 111 server_ip = get_my_ip(netifaces.AF_INET6) 112 print('Connect udp client to server IP={}'.format(server_ip)) 113 dut1.write(server_ip) 114 dut1.expect(re.compile(r'OK: Message from ESP32')) 115 116 117if __name__ == '__main__': 118 if sys.argv[1:] and sys.argv[1].startswith('IPv'): # if additional arguments provided: 119 # Usage: example_test.py <IPv4|IPv6> 120 family_addr = socket.AF_INET6 if sys.argv[1] == 'IPv6' else socket.AF_INET 121 with UdpServer(PORT, family_addr, persist=True) as s: 122 print(input('Press Enter stop the server...')) 123 else: 124 test_examples_protocol_socket_udpclient() 125