ethereum/go-ethereum v1.9.16

Ryncol (v1.9.16)

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Geth v1.9.16 is another maintenance release containing a couple minor new features, bug fixes, and block processing optimizations.

This release adds the --rpc.txfeecap geth option, which limits transaction fees to a set value. This limit applies to transactions sent via eth_sendTransaction. The default limit is 1 ether. (#21212)

The default value for --rpc.gascap is now 25M gas. It previously defaulted to unlimited gas. This applies to eth_call and will reject calls which request more gas than the cap. (#21229)

Minor new features:

• You can now run the metrics HTTP server on a separate endpoint. (#21290)
• Protocol message metrics now count the number of messages in addition to bandwidth. (#21256)
• The geth import command now exits with status 1 if errors have occurred. (#21244)
• The debug_traceTransaction RPC method now includes read storage entries in structlog output. (#21204)
• cmd/evm: add state transition tool for testing (#20958)
• cmd/devp2p: the devp2p tool now contains a test suite for Discovery v4 (#21163)
• cmd/devp2p: the new devp2p key command family provides node key management tools (#21202)
• cmd/ethkey: you can now use the --passwordfile option with the ethkey generate command (#21183)

Optimizations:

• The EVM now uses the 'uint256' library, improving the performance of math-heavy calls. (#20787, #21206)
• The LES server no longer queries the checkpoint contract for every peer connection, reducing CPU usage. (#21285)
• The gas price oracle now requires significantly less bandwidth when using the light client. (#20409)
• The RLP encoder allocates a lot less, especially for big.Int, [N]byte and list-heavy data structures. (#21291, #21274)
• The github.com/golang/snappy dependency has been updated and includes a couple new new optimizations, including an assembly language implementation for arm64. (#21237, #21304)
• crypto, core/types: less allocations when hashing and tx handling (#21265)
• trie: reduce allocations in insertPreimage (#21261)
• crypto/secp256k1: enable 128-bit int code and endomorphism optimization (#21203)
• core/state: avoid escape analysis fault when accessing cached state (#21192)

Bug fixes:

• A long standing bug related to internal fast sync restarts is resolved. (#21260)
• Account management methods no longer crash when the external signer is enabled. (#21279)
• eth_call now defaults to the gas cap value instead of MaxInt64. This avoids warnings for calls with unspecified gas. (#21284)
• Geth now builds and runs on DragonflyBSD (#21275, #21241)
• Package ethclient and the accounts/* package tree no longer depend on the RPC API implementation package. (#21319)
• eth/downloader: fixes data race between synchronize and other methods (#21201)
• utils: fix ineffectual miner config flags (#21271)
• eth: returned revert reason in traceTx (#21195)
• core/vm: fix incorrect computation of BLS discount (#21253)
• eth: don't block if transaction broadcast loop fails (#21255)
• core/rawdb: fix high memory usage in freezer (#21243)
• core/rawdb: swap tailId and itemOffset for deleted items in freezer (#21220)
• cmd, node: dump empty value config (#21296)
• internal/web3ext: add missing params to debug.accountRange (#21208)
• accounts/abi: make GetType public again (#21157)

For a full rundown of the changes please consult the Geth 1.9.16 release milestone

As with all our previous releases, you can find the:

• Pre-built binaries for all platforms on our downloads page.
• Docker images published under ethereum/client-go.
• Ubuntu packages in our Launchpad PPA repository.
• OSX packages in our Homebrew Tap repository.