mirror of
https://github.com/espressif/esp-idf.git
synced 2025-10-31 07:01:43 +01:00
71 lines
1.8 KiB
ReStructuredText
71 lines
1.8 KiB
ReStructuredText
ESP WebSocket Client
|
|
====================
|
|
|
|
Overview
|
|
--------
|
|
The ESP WebSocket client is an implementation of `WebSocket protocol client <https://tools.ietf.org/html/rfc6455>`_ for ESP32
|
|
|
|
Features
|
|
--------
|
|
* supports WebSocket over TCP, SSL with mbedtls
|
|
* Easy to setup with URI
|
|
* Multiple instances (Multiple clients in one application)
|
|
|
|
Configuration
|
|
-------------
|
|
URI
|
|
^^^
|
|
|
|
- Supports ``ws``, ``wss`` schemes
|
|
- WebSocket samples:
|
|
|
|
- ``ws://websocket.org``: WebSocket over TCP, default port 80
|
|
- ``wss://websocket.org``: WebSocket over SSL, default port 443
|
|
|
|
- Minimal configurations:
|
|
|
|
.. code:: c
|
|
|
|
const esp_websocket_client_config_t ws_cfg = {
|
|
.uri = "ws://websocket.org",
|
|
};
|
|
|
|
- If there are any options related to the URI in
|
|
``esp_websocket_client_config_t``, the option defined by the URI will be
|
|
overridden. Sample:
|
|
|
|
.. code:: c
|
|
|
|
const esp_websocket_client_config_t ws_cfg = {
|
|
.uri = "ws://websocket.org:123",
|
|
.port = 4567,
|
|
};
|
|
//WebSocket client will connect to websocket.org using port 4567
|
|
|
|
SSL
|
|
^^^
|
|
|
|
- Get certificate from server, example: ``websocket.org``
|
|
``openssl s_client -showcerts -connect websocket.org:443 </dev/null 2>/dev/null|openssl x509 -outform PEM >websocket_org.pem``
|
|
- Configuration:
|
|
|
|
.. code:: cpp
|
|
|
|
const esp_websocket_client_config_t ws_cfg = {
|
|
.uri = "wss://websocket.org",
|
|
.cert_pem = (const char *)websocket_org_pem_start,
|
|
};
|
|
|
|
For more options on ``esp_websocket_client_config_t``, please refer to API reference below
|
|
|
|
Application Example
|
|
-------------------
|
|
Simple WebSocket example that uses esp_websocket_client to establish a websocket connection and send/receive data with the `websocket.org <https://websocket.org>`_ Server: :example:`protocols/websocket`.
|
|
|
|
|
|
API Reference
|
|
-------------
|
|
|
|
.. include:: /_build/inc/esp_websocket_client.inc
|
|
|