EVM sidecar#468
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Introduce the initial Ethereum-compatible RPC surface for Casper EVM transactions, including chain ID, block number, nonce lookup, raw transaction submission, block lookup, receipt lookup, and call simulation. Split the implementation into per-method modules with shared Ethereum JSON-RPC types, examples, and schema coverage. Wire EVM call simulation through the binary port client and register the new RPC methods in the sidecar HTTP dispatcher. Update event-sidecar and legacy SSE transaction handling so EVM transactions are classified and translated consistently.
Accept EIP-7702 set-code transactions through the existing EVM raw transaction decoding path and cover the behavior with a signed Alloy fixture that verifies the forwarded transaction kind and authorization list. Map EIP-7702 receipt type 0x04 into Ethereum typed receipts and update the sidecar schema snapshots for patched core EIP-7702 types.
mpapierski
requested review from
EdHastingsCasperAssociation,
darthsiroftardis and
zajko
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Summary
This PR adds the
casper-sidecarcompanion surface for the EVM proof-of-concept in casper-network/casper-node#5410.It exposes Ethereum JSON-RPC methods backed by Casper node binary-port APIs for signed EVM transaction submission, speculative
eth_call, block/receipt/log reads, filters, and websocket log subscriptions.What Changed
eth_call.main_server.max_eth_log_block_range.casper-typesandcasper-binary-portat the core EVM branch.Current Limitations
This is still a PoC surface paired to the core EVM branch.
Missing future RPCs include
eth_estimateGas,eth_getBalance,eth_getCode, andeth_getTransactionByHash.eth_getBlockByNumberreturns transaction hashes only. Full transaction objects are rejected for now.Log filters are sidecar-local and in-memory. Historical log reads are bounded by
max_eth_log_block_range.