symfony 5.2 unrecognized option 'http_version' under framework.http_client - symfony

Question

I'm trying to implement async HTTP client with Symfony and amphp/http-client, in symfony docs said thatto enable it for HTTP I need to add http_version: '2.0'option to config and I did it:
framework:
http_client:
http_version: '2.0'
scoped_clients:
site:
base_uri: '%env(URL)%'
headers:
x-access-token: '%env(ACCESS_TOKEN)%'
but it's not working and I'm getting error Unrecognized option "http_version" under "framework.http_client". Available options are "default_options", "enabled", "max_host_connections", "mock_response_factory", "scoped_clients".
Any idea what is wrong?? Thanks in advance!

Answer 1

Looks like the docs might need to be updated a bit. Under a 5.2 app:
bin/console config:dump-reference framework http_client
# HTTP Client configuration
http_client:
enabled: true
# The maximum number of connections to a single host.
max_host_connections: ~
default_options:
# Associative array: header => value(s).
headers:
# Prototype
name: ~
# The maximum number of redirects to follow.
max_redirects: ~
# The default HTTP version, typically 1.1 or 2.0, leave to null for the best version.
http_version: ~
So http_version goes under default_options
# config/packages/framework.yaml
framework:
http_client:
default_options:
http_version: '2.0'
bin/console debug:config framework http_client
Current configuration for "framework.http_client"
=================================================
default_options:
http_version: '2.0'
headers: { }
resolve: { }
retry_failed:
enabled: false
retry_strategy: null
http_codes: { }
max_retries: 3
delay: 1000
multiplier: 2
max_delay: 0
jitter: 0.1
enabled: true
scoped_clients: { }