Release Notes v5.2.0

This release focuses on wallet stability, validation reliability, performance improvements, and expanded gRPC and CLI functionality, along with numerous fixes across syncing, networking, and transaction handling.

🛠️ Bug Fixes

Wallet & Validation

• Enabled list headers for L2.
• Resolved wallet validation deadlocks and improved validation triggering.
• Fixed panic in output manager TXO validation.
• Corrected ledger transaction flow issues.
• Fixed offline signing payment ID handling.
• Ensured completed transactions are stored with corresponding sent_output_hash.
• Fixed wallet address display overrun in the console wallet.
• Corrected UTXO scanner interval behavior.
• Improved pagination logic during UTXO scanning.
• Fixed HTTP paging for wallet sync calls.
• Resolved wallet listen address issues for HTTP server.
• Fixed deadlock in comms layer when disconnecting peers.
• Improved wallet validation performance and resiliency.

Console & CLI

• Fixed conflicting short options in the console wallet.
• Added missing data to get_active_validator_nodes.
• Fixed Windows test build target.
• Added checks to validate ledger connection before executing transactions.

gRPC & API

• Fixed gRPC methods:
  • user_pay_for_fee
  • replace_by_fee
• Fixed gRPC re-validation trigger.
• Fixed HTTP server request size handling for large wallet transactions.
• Fixed UTXO RPC call for pre-mine spend.

Networking & Sync

• Improved peer selection to sync from the best available PoW peer.
• Fixed proactive dialer not selecting new peers.
• Ensured broadcast and propagation messages are always sent.
• Fixed peer stats to retain only the most up-to-date information.
• Improved sync performance by avoiding unnecessary full block downloads.

✨ New Features

Wallet

• Added deterministic transaction IDs.
• Added ability to rescan wallets.
• Introduced coin selection via bins or buckets to help defragment wallet UTXOs.
• Made the key manager stateless.
• Added ability to manually import blockchain outputs.
• Added outputs to offline signing responses.
• Added support to cancel completed transactions via gRPC.
• Improved wallet scanning feedback.
• Reduced scanning size.
• Added batch offline signer support.
• Improved wallet scan resiliency and performance.

Fees & Transactions

• Increased fee estimation detail.
• Added config option to change gRPC transfer timeout for database writes.
• Expanded transport channel errors to surface real errors to gRPC callers.

gRPC & APIs

• Added more detail to gRPC payment reference information queries.

⚡ Performance Improvements

• Improved wallet sync call performance.
• Reduced scanning size and unnecessary block downloads.
• Added noreadahead LMDB configuration option.
• Enabled dynamic cache control for base nodes to support longer cache lifetimes.

🌐 Networking & Base Node Enhancements

• Added monitored peers to force metadata exchanges with selected nodes.
• Added CLI command to list all orphan headers.
• Improved base node check-db command.

🧹 Maintenance & Cleanup

• Removed Monero fail-safe.
• Minor internal improvements and cleanup across wallet sync and networking components.