This commit adds a few more checks to restrict what transactions are
allowed into the transaction memory pool and therefore are candidates
to be mined and relayed.
In particular, the following changes were made to what is considered
standard:
- nulldata scripts are now supported and considered standard
- multi-signature transaction are now checked to ensure they only have a
max of 3 pubkeys and the number of signatures doesn't exceed the number
of pubkeys
- the number of inputs to a signature script must now match the expected
number of inputs for the script type (includes support for additional
pay-to-script-hash inputs)
- the number of inputs pushed onto the stack by a redeeming sig script
must match the number of inputs consumed by the referenced pk script
- there can now only be a max of one nulldata output per transaction
This allows the provision of address/port pairs to be listened on instead
of just providing the port. e.g.:
btcd --listen 1.2.3.4:4321 --listen 127.0.0.01 --listen [::1]:5432
When --proxy and --connect are used, we disable listening *unless* any --listen
arguments have been provided, when we will listen on those addresses as
requested.
Initial code by davec, integration by myself.
Closes#33
allow listens to fail, but warn. error if all failed
fmt
So far we only do level 0 and level 1 checks (precense and basic
sanity). The checks done at higher levels in bitcoind are closely
coupled with their database layout.
arguably Closes#13
This change allows wallet to record all transactions in a block before
receving the new block notification, and then process them all
together when the blockconnected notification arrives.
Previously, RemoveMinedTxRequest was being run from a caller which
held a reader lock for the websocket request contexts. When
RemoveMinedTxRequest tried to grab a writer lock, it would block.
This change creates a new function, removeMinedTxRequest, that does
not grab any locks, and the caller (NotifyBlockConnected) grabs a
writer lock instead of a reader lock.
Previously, on a blockconnected notification, the websocket context
reader lock was not always being given up properly. This change
defers the unlock so it will always happen.
This fixes an issue where wallet will stop responding (due to not
being able to complete its handshake) on reconnect.
This commit makes use of the new btcutil.AppDataDir function which chooses
appropriate data directories for each supported operating system. It also
adds code to the upgrade path to properly migrate existing data from the
old to new locations.
This is part of work toward issue #30.
This commit modifies the tests to setup a chain instance backed by the new
memory database backend for btcdb. This allows the tests to avoid
creating and cleaning up files and also allows the tests to run faster
since it can all happen in memory.
The chainSetup function has also been changed to provide logic to switch
on the database type to allow for easy changing of the backend to a
different database type as needed. For example, it could be useful to
provide extra testing against new database backends.
This commit adds a new backend driver which conforms to the btcdb
interface to provide a memory only database. This is primarily useful for
testing purposes as normal operations require a persistent block storage
mechanism.
Rather than defining CheckBlockSanity as a member of a BlockChain
instance, define it at the root level so it is truly context free as
intended. In order to make it context free, the proof of work limit is
now a required parameter.
This change reworks where the command parsing occurs to be done before
handlers are checked. Before, the websocket extension handler called
the standard handler with the same message, and if it was unhandled,
would unmarshal it a second time for checking extension handlers.
