mcp-oauth-proxy-proxyoauthserverprovider-s-exchangeauthorizationco-ec986163

THEN Modify the exchangeAuthorizationCode method to include the redirect_uri that was used during the authorization request, as required by RFC 6749 section 4.1.3. This ensures compatibility with token endpoints like AWS Cognito that require it.

// In the token request payload, add 'redirect_uri' property set to the same URI used in /authorize.
const tokenPayload = {
  grant_type: 'authorization_code',
  code: authCode,
  redirect_uri: redirectUri, // Previously missing
  client_id: clientId,
  client_secret: clientSecret,
};