Backward compatibility proposal

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quentintaranpino
2024-09-12 10:00:58 +02:00
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@@ -62,8 +62,6 @@ Example:
Www-Authenticate: L402 macaroon="eyJJRCI6IjMyMGQyMDAwZjVjODQ0NmQ3OTgyMjBlYTMxOGY5ZDg0MmM5MWZkMjYyMTliODZhYWE2ODEzMDBjYjc4YTI2YWEiLCJ2ZXJzaW9uIjoiMCIsInBheW1lbnRfaGFzaCI6IjQzN2Q2YTg1Y2M2ZDQxMzNiYWIzZTEwNWM0NjViZjMzNTQ4ODNjNmVkNzNkZmFhODA3MDQ1ZmIyMTI4MTRmMjYiLCJ0b2tlbl9pZCI6IjExMzIiLCJsb2NhdGlvbiI6Ii9hcGkvdjIvbWVkaWEvNjZiMGU3NzFlYTM0ZDE0MTBkNTM4Nzk3MjQ0NGRiN2RkNjU3OGE5OTBhZDhmMjRjZjFiZTE1OWUwYmVkODdmYy8wNmQwM2FmYzJjZTJkYzY2ODUxMjFmNTFhZjM5ZDUyNjM2OWY5NjgyZTFhOWNiNGRiZGFlZDhlOWI1ZTJiNDI3Lm1wNCIsImNhdmVhdHMiOlsiIl19",preimage="3e590d1336f241e858359c865802b4883ca91d47379c840af66785e2143bad22" Www-Authenticate: L402 macaroon="eyJJRCI6IjMyMGQyMDAwZjVjODQ0NmQ3OTgyMjBlYTMxOGY5ZDg0MmM5MWZkMjYyMTliODZhYWE2ODEzMDBjYjc4YTI2YWEiLCJ2ZXJzaW9uIjoiMCIsInBheW1lbnRfaGFzaCI6IjQzN2Q2YTg1Y2M2ZDQxMzNiYWIzZTEwNWM0NjViZjMzNTQ4ODNjNmVkNzNkZmFhODA3MDQ1ZmIyMTI4MTRmMjYiLCJ0b2tlbl9pZCI6IjExMzIiLCJsb2NhdGlvbiI6Ii9hcGkvdjIvbWVkaWEvNjZiMGU3NzFlYTM0ZDE0MTBkNTM4Nzk3MjQ0NGRiN2RkNjU3OGE5OTBhZDhmMjRjZjFiZTE1OWUwYmVkODdmYy8wNmQwM2FmYzJjZTJkYzY2ODUxMjFmNTFhZjM5ZDUyNjM2OWY5NjgyZTFhOWNiNGRiZGFlZDhlOWI1ZTJiNDI3Lm1wNCIsImNhdmVhdHMiOlsiIl19",preimage="3e590d1336f241e858359c865802b4883ca91d47379c840af66785e2143bad22"
``` ```
### Unpaid Uploads ### Backward compatibility
Some servers MAY accept unpaid uploads and require payment after the upload is completed. In this case, the server MUST return a **402 Payment Required** status code along with a `Www-Authenticate` header containing the macaroon and payment request fields using the [L402 protocol](https://github.com/lightninglabs/L402) for the endpoints described in [#payment-required](#payment-required). For backward compatibility, when a client requests an unpaid blob, the server `SHOULD` return alternative information, such as a QR code, a JSON file, or other useful data in the response body. This serves as a placeholder, clearly indicating that the actual file is unavailable until payment is made. Once the payment is completed, the server `MUST` replace this placeholder with the actual blob in subsequent requests. This ensures that legacy clients still receive meaningful responses without breaking functionality, while supporting the new payment logic.
For backward compatibility, the server `SHOULD` display a QR code, JSON file, or other useful information instead of the blob in the response body. When the payment is completed, the server `MUST` replace this information with the actual uploaded file.