The Leap v5.0.0 Release introduces several exciting enhancements. This release is focused around four key themes: relaxed constraints, increased speed, improved efficiency, and enhanced control.

📝	v5.0.0-rc2 is the first release candidate of 5.0.0 due to an issue discovered in a tagged but not released 5.0.0-rc1.

See the Upgrade Guide for details on required/recommended configuration changes, deprecations and new nodeos options.

Notable Changes at a Glance:

Added

New default option to automatically apply EOS VM OC to reduce system CPU
New Peer to Peer configuration options
New Peer-level Prometheus metrics
New BLS12-381 elliptic curve crypto primitives

Improved

Relaxed constraints allow for larger transactions
Sync latency optimization
Node memory and multithreading improvements
New mode for managing state database memory

Removed

Deferred Transactions

Continue reading for an in depth look at the features of Leap v5.0.0. A complete change log is included at the bottom of these release notes.

Leap v5.0.0-rc2 Release Notes

Relaxed Constraints

Larger Transactions

Quick Summary

Benefit

Increased max transaction to support larger transactions

Achieved by

Removing max-nonprivileged-inline-action-size
Increasing default max-transaction-time

Enabled by

CPU efficiency gained by leveraging EOS VM OC on system contracts

Details

Leap 5 modifies the behavior controlled by two parameters that constrained the execution of smart contracts.

The first parameter is max-nonprivileged-inline-action-size which, while technically configurable, in practice capped the size of inline actions sent by regular contracts to 4 KiB. This parameter has been removed from Leap 5 so that the only constraint on inline action size comes from the objective limit (max_inline_action_size) that is managed on-chain.

Since the objective max_inline_action_size limit is typically higher (it is 512 KiB on EOS), the removal of the max-nonprivileged-inline-action-size unlocks behavior in smart contracts that was previously constrained. For example, on the EOS network, EOS EVM’s new call action could be used to deploy EVM contracts greater in size than 4 KiB from an EOS smart contract.

The second parameter is max-transaction-time which limits the duration a transaction is allowed to execute as measured by wall-clock time. This parameter is not removed from Leap 5 but its default value is changed to instead effectively drive the transaction wall-clock deadline by the objective limit (max_transaction_cpu_usage) that is managed on-chain.

Since the objective max_transaction_cpu_usage limit is typically higher (it is 150 ms on EOS), the change of default value for max-transaction-time allows transactions to do more work within the longer time duration allotted to them. For example, on the EOS network, EOS EVM can take advantage of the relaxed transaction wall-clock deadline to successfully execute more computationally-heavy EVM transactions that may have been rejected previously.

When upgrading to Leap 5+, node operators:

MUST ensure the max-nonprivileged-inline-action-size parameter is not in config.ini so nodeos can start.
SHOULD remove the max-transaction-time parameter to allow enforcement of the transaction wall-clock deadline to be driven by the objective on-chain limit.

Related Development

Increased Speed

Improved Read Performance

Quick Summary

Benefits

High scale read-only-transactions

Achieved by

Increased max allowed read-only transaction parallelization to 128 threads.

Enabled by

Making multi-threaded read only transaction processing more memory efficient
Improved serialization and deserialization
Reducing contract compile time
Reducing module cache size

Details

Leap 4 introduced parallel execution for both read only transactions (made by smart contracts) and read only RPC APIs (like get_block_info, get_transaction_id, etc). However, this initial implementation had to restrict the number of read-only threads up to 8 due to large memory usage.

Leap 5 restructures the underlying execution engine EOS VM, reducing memory usage and making parallelism more natural. The limit has been increased up to 128 threads. This unlocks another option for developers. Read-only solutions are a cheap, fast, and easy way to access data, cutting down on the need for additional history solutions and secondary data caches. Combined with natively supported tables and indexing EOS blockchain can be your one and only distributed database.

Related Development

Non-blocking ABI Serialization

Quick Summary

Benefits

~4X speed improvement for ABI intensive requests
More reliable atomic API calls

Achieved by

Moving ABI serialization off the main thread
Updated serialization time constraints

Details

Leap 5 enhances EOS node performance by moving ABI serialization off the main thread and introducing improved time constraints. Most notably, ABI intensive requests (like get_block) are up to 4X faster.

Previously Leap would error out to avoid long running deserialization processes that tie up reasources. In Leap 5.0 this behaviour changes. In Leap 5, when a specific object deserialization takes longer than abi-serializer-max-time-ms, it will be returned in binary form. This applies to requests that return multiple item. This includes get_block, get_account, and get_table_rows.

Related Development

Improved Efficiency

Asynchronous Block Fetching

Benefits

Simultaneously fetch and apply blocks

Achieved By

Continuing to sync the next sync-fetch-span while applying the current blocks

Details

With Leap 5, nodeos now pulls downs new blocks independantly of block processing, allowing seemless and continuous processing of blocks

Related Development

P2P sync ahead while applying received blocks

P2P Latency Optimizations

Benefits

Minimize latency for sync
Simultaneously fetch and apply blocks

Achieved By

Adding new p2p options and changing defaults
Tracking peer latency and prioritizing lowest latency peers for sync

Details

Leap 5 enables node operators to sync more efficiently. Peer Latency Tracking prioritizes peers with the lowest latency for faster and more reliable sync. Block Buffering ensures maximum CPU utilization by fetching the next block batch while applying the current one.

Smarter block deadlines optimize transactions scheduled in a block to reduce micro-forking. In previous Leap versions, speculative transaction would be queued up until a new block arrives, causing stale or aborted blocks and unnecessarily delaying read-only transaction. In Leap v5.0.0 speculative blocks scheduling is optimized to prevent unneeded block aborts, and increase liveliness of transactions.

Summary of changes

Added new option (sync-peer-limit) to limit the number of peers to sync from (default 3).
Added block range to notice messages to optimize peer choice.
Modified latency calculation based on round trip of time_message
Only sync from lowest latency peers up to sync-peer-limit
Default sync-fetch-span is now 1000 (up from 100)

Related Development

Memory Optimized Chainbase

Quick Summary

Benefits

~20% overall reduced state memory consumption

Achieved By

Optimizing underlying chainbase data structure

Details

Chainbase is the database which holds all the smart contract state in memory (RAM) for Antelope blockchains. The state is stored in (key, value) maps implemented using red-black trees. Each (key, value) pair is stored in a node, and requires three pointers (parent, left, right) and a color (a small integer able to store at least three different values).

In all versions of Leap until 5.0, these four members occupied 32 bytes of memory (three eight byte pointers, and the small integer also used 8 bytes because of alignment).

In Leap 5.0, these four members are stored in a compressed form occupying only 16 bytes, where each pointer is represented by a 42 bit offset for a total of 126 bits, leaving 2 bytes for the color member (allowing for four different values).

Our measurements show that this compressed representation allows for a Chainbase memory reduction of about 20%, with a negligible performance impact. This is one of the ways that Leap 5.0 will better utilize a given hardware, and be able to run higher blockchain loads than previous versions.

Related Development

New mode for managing in-state memory

Quick Summary

Benefits
Much lower disk IO resulting in higher throughput and lower write operations.

Achieved by
Limits memory usage to state database that is actually accessed, and not the full configured chain-state-db-size-mb, while persisting state to disk during shutdown.

Caution
If there is not enough memory to hold the state database nodeos will crash, and the state will be lost.

Details

New chain_plugin option for `database-map-mode`

Leap 5.0 supports a new mapped_private option for database-map-mode, which attemps to combine most of the benefits of mapped and heap modes, but opens the possibility of nodeos crashing in constrained memory environments.

Similar to mapped mode, the resident memory usage is limited to the part of the state database that is actually accessed, and not the full configured chain-state-db-size-mb as in heap and locked modes.

Similar to heap and locked modes, the database modified pages are not written back to disk during nodeos execution. Only at nodes normal termination are the modified pages written back to disk, updating the chain state database.

This reduces the wear-and-tear on the disk used to hold the chain state database. Also startup and termination times should be faster than with heap and locked modes.

A potential issue with the new mapped_private option is that, if the system does not have enough available RAM to hold the accessed part of the state database (around 20GB for EOS today), nodeos can crash with an out of memory error. So we recommend using this option on systems with sufficient RAM, but which may not have quite as much as is required for heap and locked modes.

Please note that using a tmpfs file system provides only benefits in mapped mode, it is mostly a waste of RAM in all other modes. nodeos now checks when this mismatch occurs, and will error at startup.

Improvement in `locked` and `heap` modes

Loading the chain state database to and from RAM (in the locked and heap modes) was memory intensive, accessing a virtual memory space of two times chain-state-db-size-mb.

In Leap 5.0 this requirement was lowered to one time chain-state-db-size-mb + 1GB.

Related Development

Improve chainbase mapped and heap behavior

CPU Optimized Smart Contracts

Quick Summary

Benefits

Order of magnitude reduced CPU utilization for system contracts

Achieved by

Selectively leveraging EOS VM OC

Details

Leap 5 leverages OC for the EOS VM by implementing an Auto OC Mode as the default setting. This new mode, eos-vm-oc-enable=auto, automatically applies OC when appropriate, optimizing the execution of transactions and improving overall throughput.

Context	OC?
Building block	baseline, but OC if account is `eosio.*`
Applying block	OC, or if producer: baseline, but OC if account is `eosio.*`
Speculatively executing trx from p2p or HTTP	baseline, but OC if account is `eosio.*`
Compute transaction	baseline, but OC if account is `eosio.*`
Read only transaction	OC

Related Developement

Enhanced Control

Customizable Peer Networking

Quick Summary

Benefits

Customize IP addresses/hostnames/ports of nodeos HTTP endpoints
Leverage efficient and secure local-only connections

Achieved By

Allowing --p2p-listen-endpoint and --p2p-server-address to be specified multiple times
Supporting multiple http endpoints
Categorizing HTTP endpoints for logical and granular control

Details

For endpoint configuration purposes, API endpoints are now grouped into several categories. You can specify different server addresses for each category. Server address can be IPv4 and port: 27.0.0.1:8080, IPv6 and port: [2001:db8:3c4d:15::1a2f:1a2b]:8080, Hostname and port: example.com:8080, or unix socket path: ./relative/unix_path.sock. For backward compatibility, the HTTP category facility has to be opted in by specifying http-server-address = http-category-address explicitly. When http-server-address = http-category-address, all the unspecified categories are considered disabled.

Changes

Specify --p2p-listen-endpoint and --p2p-server-address multiple times
Added fields added to the connections api
- remote_ip
- remote_port
- is_socket_open
- is_blocks_only
- is_transactions_only
Categorized API endpoints
- chain_ro
  - v1/chain/get_activated_protocol_features
  - v1/chain/get_block_info
  - v1/chain/get_block_header_state
  - v1/chain/get_account
  - v1/chain/get_code
  - v1/chain/get_code_hash
  - v1/chain/get_consensus_parameters
  - v1/chain/get_abi
  - v1/chain/get_raw_code_and_abi
  - v1/chain/get_raw_abi
  - v1/chain/get_table_rows
  - v1/chain/get_table_by_scope
  - v1/chain/get_currency_balance
  - v1/chain/get_currency_stats
  - v1/chain/get_producers
  - v1/chain/get_producer_schedule
  - v1/chain/get_scheduled_transactions
  - v1/chain/get_required_keys
  - v1/chain/get_transaction_id
  - v1/chain/send_read_only_transaction
  - v1/chain/get_accounts_by_authorizers
  - v1/chain/get_raw_block
  - v1/chain/get_block
  - v1/chain/get_block_header
  - v1/chain/get_transaction_status
- chain_rw
  - v1/chain/compute_transaction
  - v1/chain/push_transaction
  - v1/chain/push_transactions
  - v1/chain/send_transaction
  - v1/chain/send_transaction2
- db_size
  - v1/db_size/get
- net_ro
  - v1/net/status
  - v1/net/connections
- net_rw
  - v1/net/connect
  - v1/net/disconnect
- producer_ro
  - v1/producer/paused
  - v1/producer/get_runtime_options
  - v1/producer/get_greylist
  - v1/producer/get_whitelist_blacklist
  - v1/producer/get_scheduled_protocol_feature_activations
  - v1/producer/get_supported_protocol_features
  - v1/producer/get_account_ram_corrections
  - v1/producer/get_unapplied_transactions
- producer_rw
  - v1/producer/pause
  - v1/producer/resume
  - v1/producer/update_runtime_options
  - v1/producer/add_greylist_accounts
  - v1/producer/remove_greylist_accounts
  - v1/producer/set_whitelist_blacklist
  - v1/producer/schedule_protocol_feature_activations
  - v1/producer/get_integrity_hash
- snapshot
  - v1/producer/get_snapshot_requests
  - v1/producer/create_snapshot
  - v1/producer/schedule_snapshot
  - v1/producer/unschedule_snapshot
- trace_api
  - v1/trace_api/get_block
  - v1/trace_api/get_transaction_trace
- prometheus
  - v1/prometheus/metrics
- node
  - v1/node/get_supported_apis
  - v1/chain/get_info

Related Development

Peer-level tracking in Prometheus

Quick Summary

Benefits

Troubleshoot peering challenges

Achieved By

Adding per-peer prometheus metrics

Details

In Leap 5, Prometheus metrics are now tracked for each peer. These stats can be rendered in a terminal with a text-based user interface similar to top or ntop.

Changes

Per Peer metrics added to prometheus exporter under nodeos_p2p_connections
- accepting_blocks
- last_received_block
- first_available_block
- last_available_block
- unique_first_block_count
- latency
- bytes_received
- bytes_sent
- connection_start_time

Related Development

Add per peer prometheus metrics and a TUI to view them.

Other Changes

Build, Binaries & Platform Support

Pinned builds are no longer built via a script (pinned_build.sh) but now via Docker. The containerization of the build allows the resulting .deb package to be reproducible. README.md contains updated instructions for those wanting to perform a reproducible pinned build.

Support for Ubuntu 18.04 has been dropped.

Due to changes in the build process, separate .deb packages for different Ubuntu versions are no longer required. Only a single .deb package will be released which can be installed on all versions of Ubuntu that Leap supports.

Related Development

Replace pinned builds with reproducible pinned builds

Full IPv6 Support

Avoid port remapping hassles for multi node setups with Leap 5's full support for IPv6 in all HTTP endpoints for all nodeos plugins.

Related Development

IPv6 support

New Cryptographic Primitives

Quick Summary

Benefits

Implement efficient ZKProofs validation with BLS12-381 elliptic curve technology

Achieved by

New types in Leap to support BLS12-381 elliptic curve

Enabled by

Addition of bls12-381 library

Details

Leap 5 introduces a new implementation of a math library for the BLS12-381 elliptic curve to support Instant Finality. BLS12-381 serves as the foundation for zero-knowledge proof systems such as Groth16 in Zcash's Sapling upgrade. The BLS host functions empower EOS contract developers to validate zero-knowledge proofs more efficiently, unlocking new possibilities for systems that can protect the privacy of users' financial data.

BLS related types are available immediately in Leap v5.0.0, and BLS host functions will be available in the future via a protocol feature.

Related Development

Deprecations & Removals

Deferred Transactions Removed

Deferred Transactions have been removed. The configuration option max-scheduled-transaction-time-per-block-ms has been removed, and Leap now behaves as if this option had been set to 0. As stated in the Leap 5.0 Upgrade Guide, node operators must remove this configuration option.

Default Behavior for Scheduled Transactions:

Nodes running Leap 5 will not execute or process scheduled transactions. Instead, scheduled transactions will expire them without execution, effectively releasing the RAM.

Protocol Feature and Block Validation:

Version 5.0 additionally introduces protocol features that impact the validation of blocks with deferred transactions. Once activated, blocks with deferred transactions will no longer be considered valid.

Related Development

Remove Deferred Transactions
Remove defer transaction configuration options and block incoming delayed transactions
Implement DISABLE_DEFERRED_TRXS_STAGE_1 and DISABLE_DEFERRED_TRXS_STAGE_2 protocol features

Upgrade to C++20

Quick Summary

Benefits

Access to new language features for core development of Leap.

Achieved by

Upgrading C++ standard to C++20

Details

The C++ standard has been upgraded to C++20 for Leap 5. This will provide an array of benefits for core development. C++20 allows for simpler, cleaner code and provides new standard features and libraries.

Here are some examples of future improvements that are now possible:

Remove of code emulating features that are now standard in C++20
Utilize new features that
- Provide superior performance/portability
- Reduce memory usage
- Offer simplified syntax
enable us to use new features such as:
- concepts to make the code simpler and easier to use (better error messages)
- ranges to progran in a more functional way (partial support)
- coroutines to reduce callback hell (would require some thinking first to decide which task/executor library to use)

Complete Leap v5.0.0 Change Log

Pull Requests

[4.0 -> main] Merge 4.0.0-rc1 version bump to main by @linh2931 in #855
fix comparison of different signedness warning in log_index by @spoonincode in #860
fix noisy ignoring packed attribute warning on IR::ControlStructureImm by @spoonincode in #866
[4.0 -> main] Increase robustness of snapshot diff python test by @vladtr in #873
[4.0->main] unshare import fix & SHiP: Send until queue is empty by @huangminghuang in #877
[4.0 -> main] Test Fix: Use max-transaction-time -1 by @heifner in #878
[4.0 -> main] Restore Node.py Changes that were lost by @ClaytonCalabrese in #880
[4.0 -> main] Test fix: Add max-transaction-time -1 by @heifner in #882
[4.0 -> main] Merge 4.0.0-rc2 bump changes to main by @linh2931 in #884
Fix clang warning by @heifner in #888
[4.0 -> main] Add time summary logging for transient trx processing and read-only threads by @linh2931 in #890
set a maximum test time in CI via a ctest argument by @spoonincode in #895
[4.0 -> main] Cleanup and prevent thread starvation while in the read window. by @greg7mdp in #904
remove ubuntu 18.04 from CI & documentation by @spoonincode in #894
[4.0 -> main] Use block_num for interrupt of start_block & Use single timer for read and write windows by @heifner in #910
[4.0 -> main] Adjusted timeout in tests to give better chance on reaching consensus by @vladtr in #909
Replace needless std::map with std::vector, and std::move in capture by @greg7mdp in #913
[4.0 -> main] Implement support for -k/--kill in launcher. by @jgiszczak in #926
curl is no longer a required dependency; remove from docs & CI environment by @spoonincode in #924
[4.0 -> main] Execute read only safe tasks on read-only thread pool by @heifner in #929
[4.0 -> main] SHiP flush logs on write by @heifner in #937
[4.0->main] fix gelf DNS resolves to ipv6 address by @huangminghuang in #940
remove more unused libfc network code by @spoonincode in #941
[4.0 -> main] Clean tmp and TestLogs after test runs by @ClaytonCalabrese in #942
bump minimum cmake requirement to 3.16 by @spoonincode in #920
[4.0 -> main] forkdb reset in replay since blocks are signaled by @heifner in #944
[4.0 -> main] Small improvements for parallelizing read-only transactions and tasks by @linh2931 in #946
[4.0 -> main] Merge time summary fix to main by @linh2931 in #954
[4.0 -> main] SHiP Fix forking behavior by @heifner in #955
Return 400 http error for unknown account by @heifner in #912
[4.0 -> main] Merge 3.2.3 version bump from 4.0 to main by @linh2931 in #959
[4.0 -> main] Use is_write_window in eos-vm-oc main to determine if it is safe to update code cache by @linh2931 in #962
[PH] Reduce log Usage and Other Performance Harness Improvements by @ClaytonCalabrese in #945
revert ctest --test-dir usage that is cmake 3.20+ by @spoonincode in #961
[4.0 -> main] test_snapshot_scheduler stability improvements by @vladtr in #976
[4.0 -> main] Remove global WASM::check_limits and initial memory from instantiate_module by @linh2931 in #977
[4.0 -> main] Added missing calls to wasmifs on read-only threads by @linh2931 in #979
remove more unused WAVM code by @spoonincode in #923
remove WAVM specific c++11 flag by @spoonincode in #927
[4.0 -> main] Set an upper limit on read-only-threads of 8 by @heifner in #983
[4.0->main] fix cpack error message by @huangminghuang in #987
[4.0 -> main] Several improvements and fixes for snapshot scheduling by @vladtr in #985
Unify definitions of next_function and its variant parameter by @greg7mdp in #973
[4.0->main] prometheus on different port by @huangminghuang in #989
Update boost version. by @oschwaldp-oci in #990
[4.0 -> main] Restore read-mode=speculative by @heifner in #992
[4.0 -> main] make eosio_exit impl more direct by @spoonincode in #995
[4.0 -> main] Fix ROtrx dispatched to baseline runtime when compiled code not ready by @linh2931 in #997
[4.0 -> main] Merge release 4.0 rc3 version bump to main by @linh2931 in #1001
[4.0->main] prometheus fix main by @huangminghuang in #1006
cleos wildcard linkauth by @huangminghuang in #991
cleanup duplicated code blocks in get_account by @greg7mdp in #1004
[4.0->main] response to disallowed host by @huangminghuang in #1013
Optimize block start time by @huangminghuang in #867
[4.0 -> main] Log all http request/response at debug log level by @heifner in #1015
[4.0 -> main] Reduce producer_plugin debug level log spam by @heifner in #1019
P2P: Inform peer if not accepting transactions by @heifner in #1020
Move abi serialization of transaction trace off main thread by @greg7mdp in #999
Fix compilation warnings with clang-16 by @greg7mdp in #1027
P2P: clang-tidy fixes by @heifner in #1022
Small but measurable improvement to executor queue by @heifner in #994
update to latest commit of abieos submodule by @greg7mdp in #1036
Test: Add SHiP forking and have_positions unittest by @heifner in #958
Pass Resolver as const & instead of by value. by @greg7mdp in #1038
[PH] block producer op mode by @oschwaldp-oci in #967
P2P: Misc improvements by @heifner in #1040
Added leap-util subcommand to check for a clean shutdown by @vladtr in #914
add needed string include for some newer libc++ versions by @spoonincode in #1044
Replace boost/fc filesystem by @huangminghuang in #1011
P2P: Save and retry unlinkable blocks by @heifner in #1045
mitigate unix socket path problem by @huangminghuang in #1039
FC cleanup by @heifner in #1049
Fix control reaches end of non-void function warning by @linh2931 in #1055
Properly stringify both large and small int64's when converting to json by @vladtr in #1060
Update chainbase to include comparison of different signedness warning fix by @linh2931 in #1061
Added missing namespace to logger in case of FC_USE_PTHREAD_NAME_NP not defined by @vladtr in #1058
remove unused libssl from libtester cmakes by @spoonincode in #1068
remove boost <1.70 workaround in libtester cmakes by @spoonincode in #1069
[PH] Update initial API Node Op Mode documentation. by @oschwaldp-oci in #1056
[PH] Add http client async by @oschwaldp-oci in #1052
OBE [PH] Feature API Node Operational Mode Init by @oschwaldp-oci in #1051
Move abi serialization of transaction trace off main thread for chain_plugin: get_table_rows and get_account by @greg7mdp in #1054
Fix test failure on fast machine (release builds) by @greg7mdp in #1075
[4.0 -> main] Merge 4.0.0 version bump to main by @linh2931 in #1078
fix ambiguous to_variant()s in json tests by @spoonincode in #1080
use python_DISTLIB by @huangminghuang in #1023
Refactor: Move subjective_billing to chain library by @heifner in #1076
Update submodules to the version building with -std=c++20 by @greg7mdp in #1086
fix: not fail on signature checks for dry-run txns by @PinelliaC in #1081
[4.0 -> main] fix: not fail on signature checks for dry-run txns by @heifner in #1091
Update chainbase to tip (-Wfree-nonheap-object warning suppressed for gcc-12) by @greg7mdp in #1092
[PH] Initial API Node (HTTP Node) Support - Topology definition/configuration by @oschwaldp-oci in #1093
Changes for building with c++20. by @greg7mdp in #1070
Snapshot code refactoring by @vladtr in #1037
refactor prometheus plugin by @huangminghuang in #1074
std::result_of was deprecated in C++17, removed in C++20. by @greg7mdp in #1107
fix parallel-ctest-containers creation of log tarballs on failure by @spoonincode in #1097
Fix g++-10 link issue when building with -std=c++20. by @greg7mdp in #1103
Refactor libfc tests into one executable by @heifner in #1095
Optimization: New escape_str function for sanitizing strings by @heifner in #1108
Tests: misc cleanup by @heifner in #1112
Reorganize tests for plugins by @vladtr in #1115
[main] Update swagger files to include missing documentation by @iamveritas in #1110
Update pinned build versions for boost and llvm-src by @greg7mdp in #1118
Remove time_point implicit conversions by @heifner in #1125
[4.0 -> main] Check read-only trx options only when read-only-thread enabled, and present better error message by @linh2931 in #1134
Update ship_client.cpp by @7flash in #1140
bump chainbase & appbase submodules to main w/ CI tweaks by @spoonincode in #1143
[PH] Feature API Operational Mode and HTTP Transaction Generator by @oschwaldp-oci in #1138
Additional test contract for readonly trx test by @linh2931 in #1148
Increase test coverage of snapshot-scheduler by @vladtr in #1147
Stability issues and improvements on BSD by @vladtr in #1059
[4.0 -> main] Added block log version and num of blocks to output of leap-util block-log smoke-test by @vladtr in #1155
Fix clang warning by @heifner in #1157
bump bn256 to main head with gcc13 + c++20 include fix by @spoonincode in #1160
[4.0->main] change max-retained-history-files default by @huangminghuang in #1163
Keep subprocess_results.log around when test fails by @oschwaldp-oci in #1161
[PH] Initial reporting updates for API Node and http transaction generator by @oschwaldp-oci in #1165
Support multiple http endpoints by @huangminghuang in #1137
add gelf test by @huangminghuang in #1145
Update API/serialization time constraints by @heifner in #1139
[4.0 -> main] Ignore http error on remote_endpoint() causing shutdown by @heifner in #1177
[4.0 -> main] Correctly handle close while syncing by @heifner in #1178
Move log line for onblock and update saved log file for tests by @greg7mdp in #1183
update appbase submodule by @huangminghuang in #1184
[4.0->main] fix replay for partitioned block log by @huangminghuang in #1190
[4.0 -> main] Revert "Simplify Pinned Build Scripts" by @arhag in #1194
Fix compilation warning (does not return a value in all control paths) by @greg7mdp in #1188
fix unstable gelf test by @huangminghuang in #1180
[4.0 -> main] Fix for nodeos large memory consumption during a blocks log replay by @vladtr in #1200
[4.0 -> Main] Merge 4.0.1 version bump by @linh2931 in #1202
Improve packed_transaction parsing performance by @greg7mdp in #1199
[4.0 -> main] [docs] fix devrel#248 document chain api endpoints by @iamveritas in #1208
IPv6 support by @huangminghuang in #1203
Test harness process control by @jgiszczak in #1182
[PH] Performance Harness improvements by @oschwaldp-oci in #1195
P2P Refactor connections management by @heifner in #1187
Add prettyPrint and printReturnLimit to processUrllibRequest() by @jgiszczak in #1210
Remove disable-subjective-billing option by @heifner in #1209
[4.0 -> main] remove innocuous stray } in log statement by @spoonincode in #1211
Cleanup producer_plugin pimpl idiom. by @greg7mdp in #1213
P2P sync improvements by @heifner in #1215
Cleanup pimpl idiom on chain_plugin by @greg7mdp in #1222
Cleanup pimpl idiom for ship. by @greg7mdp in #1224
[4.0 -> main] fix NP & LR CI workflow for forked/mirrored repos that are not named leap by @spoonincode in #1227
P2P sync ahead while applying received blocks by @heifner in #1225
Extended snapshot scheduler to better handle missing and zero params by @vladtr in #1220
Avoid trying to kill a node twice to prevent orphaned processes. by @jgiszczak in #1232
[PH] Read-Only transaction support by @oschwaldp-oci in #1229
Improve robustness of snapshot unit test by @vladtr in #1236
[4.0 -> main] allow ROtrx threads unlimited time to start by @spoonincode in #1242
[4.0 -> main] SHiP: Fix state-history-log-retain-blocks option handling by @heifner in #1248
Add harden flags to pinned builds by @greg7mdp in #1258
Remove fc/string.hpp to_string impls by @greg7mdp in #1234
fix i256 key type conversion by initialize buffer before usage by @learnforpractice in #1252
Cleanup pimpl idiom for net_plugin by @greg7mdp in #1253
[4.0 -> main] Output-dir should be required for block-log subcommands of leap-util by @vladtr in #1265
P2P use round trip of time_message to calculate latency by @heifner in #1243
[4.0 -> main] fix i256 key type conversion by initialize buffer before usage by @heifner in #1269
[4.0 -> main] P2P excessive logging caused by message spamming by @heifner in #1271
[4.0 -> main] SHiP: fix intermittent empty get_block_result by @heifner in #1278
Made snapshot test more robust in case of asap scheduling by @vladtr in #1274
Create initial workflow file for Pinned Builds. by @oschwaldp-oci in #1297
[4.0 -> main] Fix for loading snapshot with empty block log by @heifner in #1298
[4.0 -> main] if actions.data & actions.hex_data provided, use the hex_data in api call get_transaction_id by @vladtr in #1301
Fix for a build on FreeBSD 13.2 by @vladtr in #1283
[4.0 -> main] Fix for loading a snapshot with an empty block log but an existing fork database by @heifner in #1304
[4.0 -> main] P2P: Do not log small clock skew by @heifner in #1305
Improve snapshot test reliability by @vladtr in #1308
fix error log message in fc network listener by @spoonincode in #1309
[4.0 -> main] Merge release/4.0.2 version bump to main by @linh2931 in #1311
remove FC_USE_PTHREAD_NAME_NP & pthread_getname_np() usage by @spoonincode in #1317
on macOS do not consider EINVAL a fatal accept error in fc's listener; fixing keosd on macOS by @spoonincode in #1318
[4.0 -> main] P2P: Use magnitude safe time types by @heifner in #1321
[4.0 -> main] Merge release/4.0.3 version bump by @linh2931 in #1327
libtester ci matrix by @oschwaldp-oci in #1312
Add configuration knobs and defaults for cdt and eos-system-contracts by @oschwaldp-oci in #1313
Add support for '--plugin' to cluster_launcher.py by @jgiszczak in #1314
[4.0 -> main] Report transaction failed if trx was exhausted in non-producing mode (GH 1247) by @greg7mdp in #1337
Update net_plugin to support clang Thread Safety Analysis features by @greg7mdp in #1268
[4.0 -> main] Pinned Builds manual dispatch workflow in CI by @oschwaldp-oci in #1339
test libtester usage as part of CI by @oschwaldp-oci in #1259
Use retry-num-blocks where possible to avoid polling in tests by @jgiszczak in #1249
Fix unused warning by @heifner in #1341
refactor listener by @huangminghuang in #1218
Test fix: nodeos_retry_transaction_test by @heifner in #1343
Test fix: large-lib-test by @heifner in #1344
Test: plugin_http_api_test.py by @heifner in #1346
[4.0 -> main] P2P: fix head_num reporting by @heifner in #1347
Blocklog: Return std::optional for head_id by @heifner in #1351
[4.0 -> main] Docs: Additional nodeos --help info by @heifner in #1352
Add eos-vm-oc-enable auto mode by @heifner in #1322
OC tierup compile in order by @heifner in #1342
Create stub workflow ph_backward_compatibility.yaml by @oschwaldp-oci in #1355
[PH] Create stub workflow for manual dispatch performance harness runs by @oschwaldp-oci in #1365
[4.0 -> main] Removed "deprecated" from help for speculative read-mode by @heifner in #1371
[4.0 -> main] Fix incorrect serializing of std::optional when value is not provided - (GH #1189) by @greg7mdp in #1374
add *.gdb_history to .gitignore by @greg7mdp in #1367
[4.0 -> main] Close connection on aysnc_read with a closed socket by @heifner in #1376
[4.0 -> main] SHiP: Support snapshot start with full deltas by @heifner in #1377
no longer eagerly use tcmalloc if it's found by @spoonincode in #1363
[3.2 -> main] Emit correct trace id for deferred trx before replace_deferred protocol feature activation by @heifner in #1380
[4.0 -> main] Emit correct trace id for deferred trx before replace_deferred protocol feature activation by @heifner in #1382
[4.0 -> main] SHiP: Improve startup when large number of SHiP logs in retain directory by @heifner in #1385
[4.0 -> main] Test: Reduce load on ci/cd by @heifner in #1389
[4.0 -> main] Test: Fix ship test to wait on correct transaction by @heifner in #1391
Signal accepted_block after it is marked valid by @heifner in #1386
[4.0 -> main] Merge memory issue fix from release/4.0 to main by @linh2931 in #1398
Test Fix: performance test - use 475ms for max_transaction_cpu_usage by @heifner in #1401
[4.0 -> main] Merge version bump from 4.0.4 to main by @linh2931 in #1402
Update max_block_cpu_usage and max_transaction_cpu_usage properly. by @jgiszczak in #1400
[PH] Create workflow to test backward compatibility of performance harness by @oschwaldp-oci in #1356
Print non-default options on startup/shutdown by @heifner in #1412
BLS12-381 Crypto Primitives by @mschoenebeck in #1071
Revert back to non-oc execution for read-only trxs by @heifner in #1408
Test Fix: libtester test failures in CICD by @oschwaldp-oci in #1438
Test Fix: Change default max-transaction-cpu-usage for tests by @heifner in #1436
on cmake 3.22+ compress .deb packages via zstd by @spoonincode in #1443
Test Fix: Controller calls only valid when building a block by @heifner in #1442
set DEBIAN_FRONTEND & TZ globally during libtester job by @spoonincode in #1444
Listen on multiple addresses for net_plugin p2p. by @jgiszczak in #1411
Disable building leap-dev.deb package by default by @spoonincode in #1448
[4.0] Fix block time reporting log statement by @heifner in #1434
C++20 support - add boost 1.82 as a submodule by @greg7mdp in #1142
[4.0 -> main] Fix block time reporting log statement by @heifner in #1451
Do not print version and non-default args for help by @heifner in #1447
Upgrade to asset-artifact-download-action@v3 in CI workflows by @spoonincode in #1445
[3.2] Ignore http error on remote_endpoint() causing terminate by @heifner in #1452
[3.2 -> 4.0] Ignore http error on remote_endpoint() causing terminate by @heifner in #1453
update eos-vm version to make wasm globals thread safe by @linh2931 in #1414
C++20 support - continue to use c++17 on files that use LLVM by @spoonincode in #1192
[4.0 -> main] Ignore http error on remote_endpoint() causing terminate by @heifner in #1454
Remove *.s from .gitignore by @heifner in #1459
Make sure all exceptions are caught when executing code in http_plugin's thread pool, so Leap doesn't crash when processing APIs. by @greg7mdp in #1370
Update C++ standard to C++20 by @greg7mdp in #1458
.gitignore cleanup - mostly stop ignoring *.cmake files. by @greg7mdp in #1460
[3.2] Modify trace_api_plugin to report serialization errors to user by @heifner in #1449
[3.2 -> 4.0] Modify trace_api_plugin to report serialization errors to user by @heifner in #1468
SHiP: Auto disable-replay-opts instead of exiting with error by @heifner in #1467
[4.0 -> main] Modify trace_api_plugin to report serialization errors to user by @heifner in #1469
Update bn256 submodule to tip. by @greg7mdp in #1474
Fix -Wsign-compare warnings by @greg7mdp in #1471
[PH] Create workflow for manually dispatching performance harness runs by @oschwaldp-oci in #1378
Update chainbase to tip. by @greg7mdp in #1475
skip bad_alloc_test when ASAN enabled by @spoonincode in #1479
Tests: Add back old commented out unittests by @heifner in #1476
return string from test contract's _abi() call instead of vector to avoid non-null terminated char* access by @spoonincode in #1478
Update Leap to parse WASM code only once for JIT by @linh2931 in #1455
Fix base64 encoding by @heifner in #1482
check for existance of BMI2 & ADX instructions on CI workers by @spoonincode in #1132
migrate to AntelopeIO's bls12-381 repo; minor additional bls12-381 usage tweaks by @spoonincode in #1472
add BLS unit test for host functions taking variable number of inputs and n=0 by @spoonincode in #1473
Require dry-run trxs to have authorization and add tests by @heifner in #1489
Set EOS VM OC max mirroring pages to a small number for read-only threads by @linh2931 in #1488
fix a couple sign-compare warnings in resource_limits_test by @spoonincode in #1491
Smarter block deadlines for speculative blocks by @heifner in #1481
fix sign-compare warning in dry_run_trx_tests by @spoonincode in #1492
upgrade to boost 1.83 by @spoonincode in #1493
fix compilation on ARM -- ifdef out an EOS VM JIT piece when not supported by @spoonincode in #1495
Add some [[nodiscard]] attributes and remove unused type by @greg7mdp in #1500
fix leaky EOS VM OC executor code mapping by @spoonincode in #1499
BLS host functions; integration branch -> main merge by @spoonincode in #1486
Add per peer prometheus metrics and a TUI to view them. by @jgiszczak in #1477
Set specific sliced pages for read-only threads in EOS VM OC Tierup by @linh2931 in #1498
The companion Leap PR for using a single execution context per wasm interface by @linh2931 in #1484
add const to operator== & operator!= to avoid c++20 warning in chainbase by @spoonincode in #1524
Prometheus: Add speculative block metrics by @heifner in #1502
Update gcc version check in CMakeLists.txt. by @greg7mdp in #1530
negate after converting to unsigned to avoid UB on minimum signed value by @spoonincode in #1526
Fix http_port in boot script by @YaroShkvorets in #1567
Update bls12-381 submodule to tip (comparison operators) by @greg7mdp in #1564
Create performance harness module by @oschwaldp-oci in #1535
Update chainbase to tip (reduce memory usage) by @greg7mdp in #1575
Remove some conversion operators by @heifner in #1563
Update bls12 submodule to tip by @greg7mdp in #1577
Make transaction generator a configurable option to TransactionGeneratorsLauncher. by @oschwaldp-oci in #1579
switch out COMPILE_FLAGS for INCLUDE_DIRECTORIES in fc's rapidjson cmake by @spoonincode in #1591
wrap cfile's fclose() to avoid warning on latest glibc by @spoonincode in #1592
add 100+ modexp test vectors from boringssl by @spoonincode in #1604
Use a single WASM interface per nodeos (instead of per thread) to save WASM compile time and cache by @linh2931 in #1549
Increase maximum supported number of read-only threads to 128 by @linh2931 in #1611
Prevent unnecessary lib<->head catchup transition changes by @linh2931 in #1619
fix build on macOS: add yield for Secure Enclave wallet's to_string() call by @spoonincode in #1627
add a needed typename for newer clang compilers by @spoonincode in #1628
remove now unneeded macOS z/bz2/lzma/zstd boost iostreams workaround by @spoonincode in #1629
Cleanup unnecessary dependency on chain_plugin by trx_generator. by @oschwaldp-oci in #1624
bump abieos submodule to newer rapidjson submodule to fix c++20 warnings by @spoonincode in #1630
add some additional test cases in modexp benchmark by @spoonincode in #1635
Add a test for memory mappings by @linh2931 in #1633
[PH] Fix issues with processing read-only transactions. by @oschwaldp-oci in #1637
Remove max-nonprivileged-inline-action-size option by @heifner in #1645
add BLS_PRIMITIVES to bios boot tutorial script by @spoonincode in #1647
Refactor adding EosioChain INTERFACE library for use in add_eosio_test_executable macro and by itself. by @oschwaldp-oci in #1638
avoid unaligned accesses to types casted from byte stream in WAVM's wasm parser by @spoonincode in #1648
avoid possible memcpy with nullptr when action data size is 0 by @spoonincode in #1649
resolve misaligned access in OC code cache write out by @spoonincode in #1653
do not perform arithmetic on nullptr inside WAVM serialization by @spoonincode in #1654
[4.0] HTTP: Check for connection_reset by @heifner in #1663
[4.0 -> main] HTTP: Check for connection_reset by @heifner in #1665
PH: Include full version in performance harness reports by @heifner in #1666
Change default max-transaction-time by @heifner in #1655
[PH] Performance Harness Updates by @oschwaldp-oci in #1667
bump libsecp256k1 to v0.4.0 by @spoonincode in #1670
randomize secp256k1 context used for signing by @spoonincode in #1671
remove usage of deprecated ATOMIC_VAR_INIT from eos-vm by @spoonincode in #1673
fix some different signedness warnings in custom_appbase_tests by @spoonincode in #1674
[PH] Delete state dirs in test logs. by @oschwaldp-oci in #1679
PH: Add a longer running read-only trx for tests by @heifner in #1685
Replace OpenSSL dependency with pinned BoringSSL by @spoonincode in #1599
[PH] Trx Generator - Use default exception handler. by @oschwaldp-oci in #1692
Remove defer transaction configuration options and block incoming delayed transactions by @linh2931 in #1643
Chainbase should balk on 3.1-4.0 chainbases by @greg7mdp in #1695
Remove prometheus-exporter-address option by @heifner in #1698
P2P: Advance read pointer when dropping trx by @heifner in #1706
Improve trx_generator http client by @heifner in #1699
migrate to new platform-cache-workflow to manage Dockerfile caching in CI by @spoonincode in #1703
extend leap-util logs for smoke test by @dimas1185 in #1704
Implement DISABLE_DEFERRED_TRXS_STAGE_1 and DISABLE_DEFERRED_TRXS_STAGE_2 protocol features by @linh2931 in #1697
generate .tar.zst out of cpack instead of .tar.gz by @spoonincode in #1714
Reduce the number of thread hops for read-only trxs by @heifner in #1702
Replace pinned builds with reproducible pinned builds by @spoonincode in #1686
PH: Disable p2p trx execution on validation and api nodes by @heifner in #1709
Fix: segfault switching between read/write windows by @heifner in #1718
Improve chainbase mapped and heap behavior by @greg7mdp in #1691
Add protocol features to disallow deferred transaction by @ericpassmore in #1724
Create release/5.0 branch and bump Leap version to 5.0.0 rc1 by @linh2931 in #1726

Contributors

New Contributors

@PinelliaC made their first contribution in #1081
@7flash made their first contribution in #1140
@learnforpractice made their first contribution in #1252
@mschoenebeck made their first contribution in #1071
@YaroShkvorets made their first contribution in #1567

Complete Contributors List

Full Changelog: v4.0.4...v5.0.0-rc1

Leap v5.0.0-rc2

Notable Changes at a Glance:

Leap v5.0.0-rc2 Release Notes

Relaxed Constraints

Larger Transactions

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Increased Speed

Improved Read Performance

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Non-blocking ABI Serialization

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Improved Efficiency

Asynchronous Block Fetching

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P2P Latency Optimizations

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Memory Optimized Chainbase

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New mode for managing in-state memory

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New chain_plugin option for database-map-mode

Improvement in locked and heap modes

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CPU Optimized Smart Contracts

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Enhanced Control

Customizable Peer Networking

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Peer-level tracking in Prometheus

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Build, Binaries & Platform Support

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Full IPv6 Support

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New Cryptographic Primitives

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Deprecations & Removals

Deferred Transactions Removed

Default Behavior for Scheduled Transactions:

Protocol Feature and Block Validation:

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Upgrade to C++20

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Changes to Options

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Changes to Performance Harness

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Complete Leap v5.0.0 Change Log

New Contributors

Complete Contributors List

Contributors

New chain_plugin option for `database-map-mode`

Improvement in `locked` and `heap` modes