X402 payment channel#3758
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Pull Request Overview
This PR implements the x402 payment channel scheme by introducing a unified apply_receipt function that enables zero-client blockchain interaction through facilitator-proxied receipt processing. The key innovation is lazy initialization: the function automatically handles channel opening and sub-channel authorization if they don't exist, then performs settlement if the receipt has a positive delta.
Key Changes:
- Introduced
apply_receiptandapply_receipt_entryfunctions for unified receipt processing with lazy channel/sub-channel initialization - Refactored existing functions (
open_channel,authorize_sub_channel,claim_from_channel) to use new internal helpers (internal_open_channel,internal_authorize_sub_channel,internal_claim_from_channel) - Added comprehensive test suite covering lazy initialization, settlement, idempotency, and backward compatibility
Reviewed Changes
Copilot reviewed 3 out of 3 changed files in this pull request and generated 8 comments.
| File | Description |
|---|---|
| frameworks/rooch-framework/sources/payment_channel.move | Core implementation: Added internal helper functions for channel operations, implemented apply_receipt and apply_receipt_for_test functions, and refactored existing public functions to delegate to internal helpers |
| frameworks/rooch-framework/sources/tests/payment_channel_test.move | Added 6 new tests for apply_receipt functionality covering lazy initialization, settlement, idempotency, error cases (no DID), backward compatibility, and progressive settlement |
| frameworks/rooch-framework/doc/payment_channel.md | Updated generated documentation to include new apply_receipt and apply_receipt_entry functions with detailed parameter, behavior, and panic condition documentation |
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Summary
Summary about this PR