This change paves the way for running btcwallet on the same system without
having to change any settings. The well-known ports used by the
reference implementation (8332 mainnet, 18332 testnet) will be exposed by
the separate wallet process, which will in turn forward unknown requests
to btcd via websockets (on 8334/18334). This allows the wallet process to
ultimately provide a unified interface that exposes the same RPC-JSON API
as the reference implementation will maintaining wallet and chain
separation.
This commit modifies the main processing loop for orphan dependencies
(orphans that are processed due to their parents showing up) to use an
index based for loop over range. Since the Go range statement does not
reevaluate on every iteration, it was previously possible under certain
circumstances for the slice to be changed out from under the range
statement while processing the orphan blocks.
This commit adds the infrastructure needed to re-run the integrity tests
after calling the InvalidBlockCache, InvalidateTxCache, and
InvalidateCache functions. The tests intentially randomize the order the
invalidate functions are called in to increase the likelyhood of finding
in issues realted to ordering of the calls.
This commit changes the interface test errors to all report the block
height and hash prior to the failure. Test failures that transactions
also now report the transaction number and hash. The makes it much
easier to track down where a test failure occurs.
If we haven't handshaken with a peer don't send messages that are not
the handshake. Additionally don't queue up invs for sending, they'll
find out soon enough when they ask us what we know.
This change adds additional http listeners for websocket connections
on "/wallet". Websockets are used to provide asynchronous messaging
between wallet daemons (i.e. btcwallet) and btcd as they allow an easy
way for btcd to provide instant notifications (instead of a wallet
polling for updates) and multiple replies to a single request.
Standard RPC commands sent over a websocket connection are handled
just like RPC, returning the same results, the only difference being
that the connection is async. In cases where the standard RPC
commands fall short of wallet daemons requests, and to request
notifications for addresses and events, extension JSON methods are
used.
Multiple wallets can be connected to the same btcd, and replies to
websocket requests and notifications are properly routed back to the
original requesting wallet.
Due to the nature of turning a synchronous protocol asynchronous, it
is highly recommended to use the JSON id field as a type of sequence
number, so replies from btcd can be routed back to the proper handler
in a wallet daemon.
The idea here is that interface_test.go will be directly usable in each
implementation to increase test coverage there as well, but also works at
the top-most level to test arbitrary backends.
This is simply at start at providing generic interface tests. The only
thing is tests so far is the empty database conditions on NewestSha, but
it adds infrastructure for creating and opening databases with special
type handling based on the database and necessary logic to teardown so
multiple backends can be tested simultaneously.
This and the next series of commits all discussed with drahn@.
This also adds tests to verify that the created error string follows
the expected format of "code: message" and tests to verify that Error
can be used as an error. Additionally, the idiom
var _, _ error = Error{}, &Error{}
was added so the build will fail if the builtin error interface is
never satisified in the future.
Rather than fetching the hash of each block individually 2k+ times, make
use of the FetchHeightRange function so all of the most recent hashes can
be fetched at once.
This commit modifies the code to make use of the new btcd APIs that allow
fetching of transaction lists which either do or do not include fully
spent transactions. It is more efficient to avoid fetching fully spent
transactions from the database when they aren't needed.
