asio example tests: Increase timeout for DHCP lease to 30s

Covers time to connect to WiFi and negotiate lease,
may be more than 5-10s on some busy APs

examples/protocols/asio/chat_client/asio_chat_client_test.py

@@ -75,7 +75,7 @@ def test_examples_protocol_asio_chat_client(env, extra_data):
     thread1.start()
     # 2. start the dut test and wait till client gets IP address
     dut1.start_app()
-    data = dut1.expect(re.compile(r" sta ip: ([^,]+),"))
+    data = dut1.expect(re.compile(r" sta ip: ([^,]+),"), timeout=30)
     # 3. send host's IP to the client i.e. the `dut1`
     dut1.write(host_ip)
     # 4. client `dut1` should receive a message

examples/protocols/asio/chat_server/asio_chat_server_test.py

@@ -37,7 +37,7 @@ def test_examples_protocol_asio_chat_server(env, extra_data):
     # 1. start test
     dut1.start_app()
     # 2. get the server IP address
-    data = dut1.expect(re.compile(r" sta ip: ([^,]+),"))
+    data = dut1.expect(re.compile(r" sta ip: ([^,]+),"), timeout=30)
     # 3. create tcp client and connect to server
     cli = socket(AF_INET,SOCK_STREAM)
     cli.connect((data[0],80))

examples/protocols/asio/tcp_echo_server/asio_tcp_server_test.py

@@ -38,7 +38,7 @@ def test_examples_protocol_asio_tcp_server(env, extra_data):
     # 1. start test
     dut1.start_app()
     # 2. get the server IP address
-    data = dut1.expect(re.compile(r" sta ip: ([^,]+),"))
+    data = dut1.expect(re.compile(r" sta ip: ([^,]+),"), timeout=30)
     # 3. create tcp client and connect to server
     cli = socket(AF_INET,SOCK_STREAM)
     cli.connect((data[0],80))

examples/protocols/asio/udp_echo_server/asio_udp_server_test.py

@@ -38,7 +38,7 @@ def test_examples_protocol_asio_udp_server(env, extra_data):
     # 1. start test
     dut1.start_app()
     # 2. get the server IP address
-    data = dut1.expect(re.compile(r" sta ip: ([^,]+),"))
+    data = dut1.expect(re.compile(r" sta ip: ([^,]+),"), timeout=30)
     # 3. create tcp client and connect to server
     cli = socket(AF_INET, SOCK_DGRAM)
     cli.connect((data[0], 80))