Add SSZ types, content negotiation, and encoding helpers#466
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JasonVranek wants to merge 5 commits into
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Add SSZ types, content negotiation, and encoding helpers#466JasonVranek wants to merge 5 commits into
JasonVranek wants to merge 5 commits into
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Introduce EncodingType, AcceptedEncodings, and content negotiation primitives for SSZ support in the PBS pipeline. Includes: - EncodingType enum with FromStr/Display and MIME param tolerance - AcceptedEncodings with q-value aware Accept header parsing - SSZ bid value extraction from SignedBuilderBid by fork - deserialize_body and parse_response_encoding_and_fork helpers - Per-fork type aliases for BuilderBid and ExecutionPayloadHeader - SszValueError, PbsError::GeneralRequest, PbsClientError variants - Comprehensive unit tests for all new types and helpers - New deps: headers-accept, mediatype
ninaiiad
suggested changes
May 20, 2026
ninaiiad
reviewed
May 20, 2026
ltitanb
requested changes
May 20, 2026
- ssz drops support for past forks
ninaiiad
reviewed
May 21, 2026
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| /// Test that SSZ encoding and decoding round-trips, returning the decoded | ||
| /// struct. | ||
| pub fn test_encode_decode_ssz<T: Encode + Decode>(d: &[u8]) -> T { |
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is this used? is this an actual test and should be in mod test then?
| #[error( | ||
| "response size exceeds max size; max: {max}, content_length: {content_length}, raw: {raw}" | ||
| )] | ||
| PayloadTooLarge { max: usize, content_length: usize, raw: String }, |
Contributor
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do we need the raw field here? could we provide some identifier instead maybe?
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Summary
Introduces the types and helpers needed for SSZ support in the PBS pipeline. No behavior changes, just plumbing the follow-up PRs build on.
What's in this PR
EncodingTypeenum withFromStr/Display, including MIME parameter tolerance (RFC 7231 §3.1.1.1)AcceptedEncodingswith q-value-aware Accept header parsing (RFC 9110 §12.5.1)SignedBuilderBidfor all supported forks (Bellatrix through Fulu)deserialize_bodyandparse_response_encoding_and_forkhelpersBuilderBidandExecutionPayloadHeaderSszValueError,PbsError::GeneralRequest,PbsClientError::DecodeError/RelayErrorheaders-accept,mediatypeReview notes
Part 1 of 4: SSZ types → get_header → submit_block → validation bypassing
Attribution
This work builds on the SSZ builder flow originally implemented by @eserilev
in #252 and ported to the current codebase by @jclapis in #403.
Co-authored-by: Eitan Seri-Levi eserilev@ucsc.edu
Co-authored-by: Joe Clapis jclapis@outlook.com