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v3.3.0
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@bcndev bcndev released this 31 Aug 18:43
· 18 commits to master since this release
v3.3.0
f532cce

Consensus update (hard fork)

  • Voting starts immediately, once 90% of mined blocks contain votes for update, the update height will be automatically selected so that consensus update will happen approximately 2 weeks after that.
  • Market fees - any transaction fee including 0 is now legal for all transactions. Miners will increase block size only if it is profitable for them in a short run.

General improvements

  • Better priority and exclusive nodes logic.
  • Seed nodes are now contacted approximately once per day (greatly helps to catch up after bytecoind is started for users who run it after delay of several weeks or more).
  • Binary methods now share single access point /binary_rpc.
  • Code for consensus upgrade voting correctly counts votes on both main chain and each side chain.
  • Limited on incoming connections (default is 100).
  • Fixed ignored external port on peer handshake (made connects through exposed non-standard ports to nodes behind NAT impossible).
  • Groestl hash function is updated from the official source.
  • Keccak permutation function is updated from the official source.
  • bytecoind never searches for blocks.bin and blockindex.bin outside the data folder.
  • now when you specify --p2p-bind-address, but not --p2p-external-port, p2p external port will be set to p2p bind port. When you wish NAT tunneling, good practice is to specify both.

Command line changes/additions

  • Paranoid mode to check every byte of blockchain when downloading (usually checks only blocks beyond the last checkpoint).
  • Warning: Now walletd exits by default after --create-wallet and --set-password operations. This change can break your scripts. If you need the wallet running after those commands, you can add --launch-after-command parameter
  • Now you can use --set-password with --export-view-only and --backup-wallet-data, to encrypt result wallet with a different password.
  • Fixed bug with walletd not returning api::WALLETD_BIND_PORT_IN_USE error code when the JSON API port is in use and using inproc bytecoind.
  • Fixed bug with bytecoind not returning api::BYTECOIND_BIND_PORT_IN_USE error code when the JSON API port is in use.
  • walletd now prints address after creation of wallet.
  • walletd now prints deprecation warning when using inproc bytecoind.
  • walletd now binds to port 9070 on testnet and 10070 on stagenet resp. by default.

General API improvements

  • Optimisation of JSON RPC calls (2x speed up on very large responses).
  • Made the jsonrpc argument mandatory with value "2.0" in all JSON RPC calls according to the spec.
  • JSON RPC id is required now according to spec.
  • JSON RPC error's additional data moved into data object inside the error object according to spec.
  • Now any field in requests that daemons do not understand will be reported as a error.
  • Much better error handling, more specific error codes.

Specific API improvements

  • New get_block_header method for blockchain structure inspection (to replace getblockheaderbyhash, getblockheaderbyheight, and getlastblockheader legacy methods).
  • New get_wallet_info method.
  • New VIEW_ONLY_WALLET (-304) error code, returned from create_transaction.
  • In methods supporting longpoll (get_status and get_block_template) all longpoll arguments are now optional. So, for example, if you are interested in outgoing_peer_count only, you can specify only outgoing_peer_count in request and get response when outgoing_peer_count changes. Changes to other fields will not trigger response to longpoll.
  • New ADDRESS_FAILED_TO_PARSE (-4) and ADDRESS_NOT_IN_WALLET (-1002) error codes, returned from lots of methods
  • New fields in get_addresses request/response to iterate through list of addresses
  • Now top_block_timestamp_median returned correctly from get_status JSON RPC methods.
  • New need_signatures fields in APIs returning raw transactions.
  • check_sendproof now returns values from sendproof in response if proof is valid.
  • All methods return new correct values for block_size and transactions_cumulative_size.
  • get_raw_block and get_block_header now return orphan_status and depth (consistent with height_or_depth fields where top block is -1).
  • get_random_amounts has no more depth limit of 128 block (distribution would be skewed a bit for very large depths).
  • get_statistics response now includes much more information.
  • submit_block now returns block_header in result.
  • All transfer objects now have transaction_hash field - especially useful when processing unlocked_transfers in result of get_transfers method.

API deprecations (will be removed in version 3.4.0)

  • In all output and transaction objects unlock_time is deprecated (renamed to unlock_block_or_timestamp).
  • In all output objects global_index deprecated (renamed to index).
  • In get_random_outputs request outs_count is deprecated (renamed to output_count).
  • In get_transfers request desired_transactions_count is deprecated (renamed to desired_transaction_count).
  • In all transaction objects 'binary_size' is deprecated (renamed to size).

Incompatible API changes

  • get_raw_transaction method now returns json error -5 if transaction not found.
  • Deprecated prev_hash field remains only in result of legacy methods (getblockheaderbyhash, getblockheaderbyheight, and getlastblockheader legacy methods), use 'previous_block_hash' instead.
  • Deprecated total_fee_amount field remains only in result of legacy methods (getblockheaderbyhash, getblockheaderbyheight, and getlastblockheader), use transactions_fee instead.
  • Deprecated transactions_cumulative_size field remains only in result of legacy methods (getblockheaderbyhash, getblockheaderbyheight, and getlastblockheader), use transactions_size instead.

Incompatible API changes (likely to affect only developers of block explorers)

  • In all raw block objects global_indices renamed to output_indexes.
  • In all raw transaction objects vin, vout renamed to inputs, outputs resp.
  • In all raw output objects key renamed to public_key.
  • In all raw output objects target object removed and all its fields moved into raw output object.
  • In all raw coinbase input objects block_index renamed to height.
  • In all raw header objects (including parent_block) miner_tx, base_transaction_branch renamed to coinbase_transaction, coinbase_transaction_branch resp.
  • In all raw input and raw output objects, tag:ff renamed to type:coinbase and tag:02 renamed to type:key.

Testnet/Stagenet related

  • New command line parameter --net=test|stage|main configures daemons for testnet, stagenet, or mainnet resp.
  • For testnet time multiplier can now be set to speed up all processes 10x, 100x or even more.
  • When participating in testnet or stagenet, bytecoind now uses UDP Multicast to announce/discover other bytecoind nodes in local network. Thus in most local networks testnet will self-assemble without seed nodes. In mainnet multicasts are disabled due to anonymity concerns.
  • Testnet/Stagenet now have fixed 1MB max block size limit.
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