The code to compute a versioned hash was duplicated a couple times, and also had a small
issue: if we ever change params.BlobTxHashVersion, it will most likely also cause changes
to the actual hash computation. So it's a bit useless to have this constant in params.
EIP-4844 adds a new transaction type for blobs. Users can submit such transactions via `eth_sendRawTransaction`. In this PR we refrain from adding support to `eth_sendTransaction` and in fact it will fail if the user passes in a blob hash.
However since the chain can handle such transactions it makes sense to allow simulating them. E.g. an L2 operator should be able to simulate submitting a rollup blob and updating the L2 state. Most methods that take in a transaction object should recognize blobs. The change boils down to adding `blobVersionedHashes` and `maxFeePerBlobGas` to `TransactionArgs`. In summary:
- `eth_sendTransaction`: will fail for blob txes
- `eth_signTransaction`: will fail for blob txes
The methods that sign txes does not, as of this PR, add support the for new EIP-4844 transaction types. Resuming the summary:
- `eth_sendRawTransaction`: can send blob txes
- `eth_fillTransaction`: will fill in a blob tx. Note: here we simply fill in normal transaction fields + possibly `maxFeePerBlobGas` when blobs are present. One can imagine a more elaborate set-up where users can submit blobs themselves and we fill in proofs and commitments and such. Left for future PRs if desired.
- `eth_call`: can simulate blob messages
- `eth_estimateGas`: blobs have no effect here. They have a separate unit of gas which is not tunable in the transaction.
In the tracing tests, the base fee was generally set to nil. This commit changes this to pass the proper base instead, and fixes the few tests which become broken by the change.
* Update client.go to allow the use of paths with the heimdall url
As reported to the polygon team 2 months ago in the Ankr polygon slack, the current code prevents the use of a path with the heimdall url, this was fixed in erigon ledgerwatch/erigon@a3a6170 in response to my request by Mark Holt, and it seems this code was just copied from bor where it is incorrect too. This patch fixes that.
* Add reference to path library
* Fix reversed order of values in unit tests and test removal of setting u.path to rawPath (otherwise why do we need rawPath at all) seems like there were work arounds done here in bioth the unit tests AND the makeURL but logic needs to be examined
Given the discussions around deprecating pending (see #28623 or ethereum/execution-apis#495), we can move away from using the pending block internally, and use latest instead
