oauth2 code flow: Azure returns error AADSTS500112

[pedrobtz]

httr2/R/oauth-flow-auth-code.R

Line 186 in c7d4a86

redirect_uri = redirect_uri,

When performing an "oauth2 code flow" to Azure, and not setting the argument redirect_uri (using the default "http://localhost"), Azure returns error AADSTS500112.

Error in outh_flow_auth_codeO):
! OAth failure [invalid_client]
AADSTS500112: The reply address "http://localhost' does not match the reply address
'http://localhost:18894/° provided when requesting Authorization code. 

When oauth_flow_auth_code uses the default redirect URI from oauth_redirect_uri() (and it returns "http://localhost/"), the subsequent call to normalize_redirect_uri() adds a random port, creating a mismatch between the authorization and token requests.

This causes OAuth providers (e.g., Azure AD) to reject the token exchange with "reply address does not match" errors, as the redirect$uri in the first request differs from the second redirects_url.