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accounts/external: forward blob fee cap to external signer

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SignTx populated BlobHashes and the sidecar fields (Blobs/Commitments/
Proofs) for a blob transaction but never set args.BlobFeeCap. As a
result the external (clef) signer received maxFeePerBlobGas:null and
signed a transaction inconsistent with the one passed in, silently
dropping the blob fee cap.

Set args.BlobFeeCap from tx.BlobGasFeeCap() so the signing request
faithfully reflects the input transaction. This mirrors the existing
handling of the other blob-tx fields.
This commit is contained in:
cuiweixie 2026-06-13 18:51:53 +08:00
parent eea6242742
commit b40574aa1d
1 changed files with 1 additions and 0 deletions
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accounts/external/backend.go vendored
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@ -237,6 +237,7 @@ func (api *ExternalSigner) SignTx(account accounts.Account, tx *types.Transactio
}
if tx.Type() == types.BlobTxType {
args.BlobHashes = tx.BlobHashes()
args.BlobFeeCap = (*hexutil.Big)(tx.BlobGasFeeCap())
sidecar := tx.BlobTxSidecar()
if sidecar == nil {
return nil, errors.New("blobs must be present for signing")