CI: optimize example protocol test cases

examples/protocols/icmp_echo/example_test.py

@@ -12,7 +12,7 @@ def test_examples_icmp_echo(env, extra_data):
     dut = env.get_dut('icmp_echo', 'examples/protocols/icmp_echo')
     dut.start_app()
 
-    dut.expect('example_connect: Connected to')
+    dut.expect('example_connect: Connected to', timeout=60)
     dut.expect('esp>')
 
     ping_dest = os.getenv('EXAMPLE_ICMP_SERVER', 'www.espressif.com')

examples/protocols/sockets/tcp_server/example_test.py

@@ -68,6 +68,7 @@ def test_examples_protocol_socket_tcpserver(env, extra_data):
     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)
     ipv6 = dut1.expect(re.compile(r' IPv6 address: ({})'.format(ipv6_r)), timeout=30)[0]
     print('Connected with IPv4={} and IPv6={}'.format(ipv4, ipv6))
+    dut1.expect('Socket listening')
 
     # test IPv4
     received = tcp_client(ipv4, MESSAGE)

examples/protocols/sockets/udp_client/example_test.py

@@ -17,6 +17,7 @@ from threading import Event, Thread
 
 import netifaces
 import ttfw_idf
+from tiny_test_fw.DUT import ExpectTimeout
 
 # -----------  Config  ----------
 PORT = 3333
@@ -104,14 +105,28 @@ def test_examples_protocol_socket_udpclient(env, extra_data):
     with UdpServer(PORT, socket.AF_INET):
         server_ip = get_my_ip(netifaces.AF_INET)
         print('Connect udp client to server IP={}'.format(server_ip))
+        for _ in range(3):
+            try:
                 dut1.write(server_ip)
                 dut1.expect(re.compile(r'OK: Message from ESP32'))
+                break
+            except ExpectTimeout:
+                pass
+        else:
+            raise ValueError('Failed to send/recv udp packets.')
     # test IPv6
     with UdpServer(PORT, socket.AF_INET6):
         server_ip = get_my_ip(netifaces.AF_INET6)
         print('Connect udp client to server IP={}'.format(server_ip))
+        for _ in range(3):
+            try:
                 dut1.write(server_ip)
                 dut1.expect(re.compile(r'OK: Message from ESP32'))
+                break
+            except ExpectTimeout:
+                pass
+        else:
+            raise ValueError('Failed to send/recv udp packets.')
 
 
 if __name__ == '__main__':