USPS requires POST method for OAUTH2 authorization

[ianbaek]

I wanted to integrate usps oauth, thus I added below in providers.yaml based on their doc. However, the issue is that 'https://api.usps.com/oauth2/v3/authorize' requires only POST method and it returns error. I understand standard oauth2 is GET to authorize. Is there a way to specify the method in providers.yaml?

usps: categories:

• shipping auth_mode: OAUTH2 authorization_url: https://api.usps.com/oauth2/v3/authorize token_url: https://api.usps.com/oauth2/v3/token token_request_auth_method: basic authorization_params: response_type: code token_params: grant_type: authorization_code refresh_params: token_type_hint: refresh_token proxy: base_url: https://api.usps.com

[linear[bot]]

NAN-1399 USPS requires POST method for OAUTH2 authorization