mirror of
https://github.com/esphome/esphome-docs.git
synced 2024-12-25 17:17:54 +01:00
224 lines
6.3 KiB
ReStructuredText
224 lines
6.3 KiB
ReStructuredText
HTTP Request
|
|
============
|
|
|
|
.. seo::
|
|
:description: Instructions for setting up HTTP Requests in ESPHome
|
|
:image: connection.svg
|
|
:keywords: http, request
|
|
|
|
|
|
The ``http_request`` component lets you make HTTP/HTTPS requests. First, you need to setup a component:
|
|
|
|
.. code-block:: yaml
|
|
|
|
# Example configuration entry
|
|
http_request:
|
|
useragent: esphome/device
|
|
timeout: 10s
|
|
|
|
Configuration variables:
|
|
------------------------
|
|
|
|
- **useragent** (*Optional*, string): User-Agent header for requests. Defaults to ``ESPHome``.
|
|
- **timeout** (*Optional*, :ref:`time <config-time>`): Timeout for request. Defaults to ``5s``.
|
|
- **id** (*Optional*, :ref:`config-id`): Manually specify the ID used for code generation.
|
|
|
|
ESP8266 Options:
|
|
|
|
- **esp8266_disable_ssl_support** (*Optional*, boolean): Whether to include SSL support on ESP8266s.
|
|
Defaults to ``no``. See :ref:`esphome-esp8266_disable_ssl_support` for more info
|
|
|
|
.. _esphome-esp8266_disable_ssl_support:
|
|
|
|
``esp8266_disable_ssl_support``
|
|
-------------------------------
|
|
|
|
This options allows you to disable inclusion of SSL libraries. This is required on a flash
|
|
constrained devices (512k or 1M) which does not have enough space to support
|
|
SSL and OTA concurrently. The flashing will fail with the following error
|
|
``Error: ESP does not have enough space to store OTA file``.
|
|
|
|
HTTP Request Actions
|
|
--------------------
|
|
|
|
Component support a number of :ref:`actions <config-action>` that can be used to send requests.
|
|
|
|
.. _http_request-get_action:
|
|
|
|
``http_request.get`` Action
|
|
***************************
|
|
|
|
This :ref:`action <config-action>` sends a GET request.
|
|
|
|
.. code-block:: yaml
|
|
|
|
on_...:
|
|
- http_request.get:
|
|
url: https://esphome.io
|
|
headers:
|
|
Content-Type: application/json
|
|
verify_ssl: false
|
|
on_response:
|
|
then:
|
|
- logger.log:
|
|
format: 'Response status: %d'
|
|
args:
|
|
- status_code
|
|
# Short form
|
|
- http_request.get: https://esphome.io
|
|
|
|
Configuration variables:
|
|
|
|
- **url** (**Required**, string, :ref:`templatable <config-templatable>`): URL to send request.
|
|
- **headers** (*Optional*, mapping): Map of HTTP headers. Values are :ref:`templatable <config-templatable>`.
|
|
- **verify_ssl** (*Optional*, boolean): Verify the SSL certificate of the endpoint. Defaults to ``true``.
|
|
- **on_response** (*Optional*, :ref:`Automation <automation>`): An automation to perform when the request is finished.
|
|
|
|
.. note::
|
|
|
|
Currently ESPHome **can't verify the SSL certificate** of the endpoint.
|
|
Set ``verify_ssl: false`` to make HTTPS request.
|
|
|
|
.. _http_request-post_action:
|
|
|
|
``http_request.post`` Action
|
|
****************************
|
|
|
|
This :ref:`action <config-action>` sends a POST request.
|
|
|
|
.. code-block:: yaml
|
|
|
|
on_...:
|
|
- http_request.post:
|
|
url: https://esphome.io
|
|
headers:
|
|
Content-Type: application/json
|
|
json:
|
|
key: value
|
|
verify_ssl: false
|
|
# Short form
|
|
- http_request.post: https://esphome.io
|
|
|
|
Configuration variables:
|
|
|
|
- **body** (*Optional*, string, :ref:`templatable <config-templatable>`): A HTTP body string to send with request.
|
|
- **json** (*Optional*, mapping): A HTTP body in JSON format. Values are :ref:`templatable <config-templatable>`. See :ref:`http_request-examples`.
|
|
- All other options from :ref:`http_request-get_action`.
|
|
|
|
.. _http_request-send_action:
|
|
|
|
``http_request.send`` Action
|
|
****************************
|
|
|
|
This :ref:`action <config-action>` sends a request.
|
|
|
|
.. code-block:: yaml
|
|
|
|
on_...:
|
|
- http_request.send:
|
|
method: PUT
|
|
url: https://esphome.io
|
|
headers:
|
|
Content-Type: application/json
|
|
body: "Some data"
|
|
verify_ssl: false
|
|
|
|
Configuration variables:
|
|
|
|
- **method** (**Required**, string): HTTP method to use (``GET``, ``POST``, ``PUT``, ``DELETE``, ``PATCH``).
|
|
- All other options from :ref:`http_request-post_action`.
|
|
|
|
.. _http_request-on_response:
|
|
|
|
``on_response`` Trigger
|
|
-----------------------
|
|
|
|
This automation will be triggered when the HTTP request is finished and will supply the
|
|
http response code in parameter ``status_code`` as an ``int``.
|
|
|
|
.. code-block:: yaml
|
|
|
|
on_...
|
|
then:
|
|
- http_request.get:
|
|
url: https://esphome.io
|
|
verify_ssl: false
|
|
on_response:
|
|
then:
|
|
- logger.log:
|
|
format: "Response status: %d"
|
|
args:
|
|
- status_code
|
|
|
|
|
|
.. _http_request-examples:
|
|
|
|
Examples
|
|
--------
|
|
|
|
Templatable values
|
|
******************
|
|
|
|
.. code-block:: yaml
|
|
|
|
on_...:
|
|
- http_request.post:
|
|
url: !lambda |-
|
|
return ((std::string) "https://esphome.io?state=" + id(my_sensor).state).c_str();
|
|
headers:
|
|
X-Custom-Header: !lambda |-
|
|
return ((std::string) "Value-" + id(my_sensor).state).c_str();
|
|
body: !lambda |-
|
|
return id(my_sensor).state;
|
|
|
|
|
|
Body in JSON format (syntax 1)
|
|
******************************
|
|
|
|
**Note:** all values of the map should be a strings.
|
|
It's impossible to send ``boolean`` or ``numbers`` with this syntax.
|
|
|
|
.. code-block:: yaml
|
|
|
|
on_...:
|
|
- http_request.post:
|
|
url: https://esphome.io
|
|
verify_ssl: false
|
|
json:
|
|
key: !lambda |-
|
|
return id(my_sensor).state;
|
|
greeting: "Hello World"
|
|
|
|
# Will send:
|
|
# {"key": "42.0", "greeting": "Hello World"}
|
|
|
|
Body in JSON format (syntax 2)
|
|
******************************
|
|
|
|
**Note:** use this syntax to send ``boolean`` or ``numbers`` in JSON.
|
|
|
|
The JSON message will be constructed using the `ArduinoJson <https://github.com/bblanchon/ArduinoJson>`__ library.
|
|
In the ``json`` option you have access to a ``root`` object which will represents the base object
|
|
of the JSON message. You can assign values to keys by using the ``root["KEY_NAME"] = VALUE;`` syntax
|
|
as seen below.
|
|
|
|
.. code-block:: yaml
|
|
|
|
on_...:
|
|
- http_request.post:
|
|
url: https://esphome.io
|
|
verify_ssl: false
|
|
json: |-
|
|
root["key"] = id(my_sensor).state;
|
|
root["greeting"] = "Hello World";
|
|
|
|
# Will send:
|
|
# {"key": 42.0, "greeting": "Hello World"}
|
|
|
|
See Also
|
|
--------
|
|
|
|
- :doc:`index`
|
|
- :apiref:`http_request/http_request.h`
|
|
- :ghedit:`Edit`
|