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protocols
Krzysztof Budzynski e3e5a41bc9 Merge branch 'doc/broken_readme_links_v4.1' into 'release/v4.1' 5 vuotta sitten
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asio c906e2afee test: update example and unit tests with new import roles: 6 vuotta sitten
cbor 5a09de8245 cbor: add tinycbor library and example 6 vuotta sitten
coap_client edb84c19dd coap: move mbedTLS config options from component to examples 5 vuotta sitten
coap_server edb84c19dd coap: move mbedTLS config options from component to examples 5 vuotta sitten
esp_http_client d168611bbf ci: Temporarily remove the esp_http_client httpbin redirect tests 5 vuotta sitten
esp_local_ctrl de3eed647f Docs: Encourage to used Python 3 6 vuotta sitten
http2_request 31b2702387 esp_netif, examples: esp_netif_init() moved into ESP_ERROR_CHECK() 6 vuotta sitten
http_request 31b2702387 esp_netif, examples: esp_netif_init() moved into ESP_ERROR_CHECK() 6 vuotta sitten
http_server 4daa605bd3 gh_action: fix python lint 5 vuotta sitten
https_mbedtls 31b2702387 esp_netif, examples: esp_netif_init() moved into ESP_ERROR_CHECK() 6 vuotta sitten
https_request 563175d90a mbedtls: Use SPIRAM strategy in example_test.py 6 vuotta sitten
https_server 31b2702387 esp_netif, examples: esp_netif_init() moved into ESP_ERROR_CHECK() 6 vuotta sitten
icmp_echo 31b2702387 esp_netif, examples: esp_netif_init() moved into ESP_ERROR_CHECK() 6 vuotta sitten
mdns c906e2afee test: update example and unit tests with new import roles: 6 vuotta sitten
modbus 869742de00 Merge branch 'bugfix/freemodbus_fix_long_frame_buffer_failure_backport4_1' into 'release/v4.1' 5 vuotta sitten
mqtt 30372f5a4f Merge branch 'docs/esp_netif_programmer_manual' into 'master' 6 vuotta sitten
openssl_client 31b2702387 esp_netif, examples: esp_netif_init() moved into ESP_ERROR_CHECK() 6 vuotta sitten
openssl_server 31b2702387 esp_netif, examples: esp_netif_init() moved into ESP_ERROR_CHECK() 6 vuotta sitten
pppos_client 7ab64c5345 Fix broken README links 5 vuotta sitten
sntp 8bc618f070 Merge branch 'feature/sntp_add_desc' into 'master' 6 vuotta sitten
sockets 87141efd1e socket-examples: IPv6 related update for examples to set correct scoped id 5 vuotta sitten
websocket ffeda3003c tcp_transport/ws_client: websockets now correctly handle messages longer than buffer 6 vuotta sitten
README.md 47bbb107a8 build system: Use CMake-based build system as default when describing commands 6 vuotta sitten

README.md

Protocols Examples

Implementation of internet communication protocols and services.

See the README.md file in the upper level examples directory for more information about examples.

Establishing Wi-Fi or Ethernet Connection

About the example_connect() Function

Protocols examples use a simple helper function, example_connect(), to establish Wi-Fi or Ethernet connection. This function is implemented in examples/common_components/protocol_examples/common/connect.c, and has a very simple behavior: block until connection is established and IP address is obtained, then return. This function is used to reduce the amount of boilerplate and to keep the example code focused on the protocol or library being demonstrated.

The simple example_connect() function does not handle timeouts, does not gracefully handle various error conditions, and is only suited for use in examples. When developing real applications, this helper function needs to be replaced with full Wi-Fi / Ethernet connection handling code. Such code can be found in examples/wifi/getting_started/ and examples/ethernet/basic/ examples.

Configuring the Example

To configure the example to use Wi-Fi or Ethernet connection, open the project configuration menu (idf.py menuconfig) and navigate to "Example Connection Configuration" menu. Select either "Wi-Fi" or "Ethernet" in the "Connect using" choice.

When connecting using Wi-Fi, enter SSID and password of your Wi-Fi access point into the corresponding fields. If connecting to an open Wi-Fi network, keep the password field empty.

When connecting using Ethernet, set up PHY type and configuration in the provided fields. If using Ethernet for the first time, it is recommended to start with the Ethernet example readme, which contains instructions for connecting and configuring the PHY. Once Ethernet example obtains IP address successfully, proceed to the protocols example and set the same configuration options.

Disabling IPv6

By default, example_connect() function waits until Wi-Fi or Ethernet connection is established, and IPv4 address and IPv6 link-local address are obtained. In network environments where IPv6 link-local address cannot be obtained, disable "Obtain IPv6 link-local address" option found in "Example Connection Configuration" menu.