libsecp256k1's API changed, so update key.cpp to use it.
Libsecp256k1 now has explicit context objects, which makes it completely thread-safe.
In turn, keep an explicit context object in key.cpp, which is explicitly initialized
destroyed. This is not really pretty now, but it's more efficient than the static
initialized object in key.cpp (which made for example bitcoin-tx slow, as for most of
its calls, libsecp256k1 wasn't actually needed).
This also brings in the new blinding support in libsecp256k1. By passing in a random
seed, temporary variables during the elliptic curve computations are altered, in such
a way that if an attacker does not know the blind, observing the internal operations
leaks less information about the keys used. This was implemented by Greg Maxwell.
bba2216 RPC test for "#5418 Report missing inputs in sendrawtransaction" (Jonas Schnelli)
de8e801 Report missing inputs in sendrawtransaction (Pieter Wuille)
2a22d4b Fix comptool send_message call when MAX_INV_SZ reached (Suhas Daftuar)
574db48 Fix potential race conditions in p2p testing framework (Suhas Daftuar)
5487975 Don't run invalidblockrequest.py in travis until race condition is fixed (Suhas Daftuar)
ef32817 Fix mininode disconnections to work with select (Suhas Daftuar)
Compute the change directly as difference between the "requested" and
the actual value returned by SelectCoins. This removes a duplication of
the fee logic code.
Previously, each NodeConnCB had its own lock to synchronize data structures
used by the testing thread and the networking thread, and NodeConn provided a
separate additional lock for synchronizing access to each send buffer. This
commit replaces those locks with a single global lock (mininode_lock) that we
use to synchronize access to all data structures shared by the two threads.
Updates comptool and maxblocksinflight to use the new synchronization
semantics, eliminating previous race conditions within comptool, and re-enables
invalidblockrequest.py in travis.
f46a680 Better mruset unit test (Pieter Wuille)
d4d5022 Use ring buffer of set iterators instead of deque of copies in mruset (Pieter Wuille)
d81cff3 Replace mruset setAddrKnown with CRollingBloomFilter addrKnown (Gavin Andresen)
69a5f8b Rolling bloom filter class (Gavin Andresen)
Use a probabilistic bloom filter to keep track of which addresses
we think we have given our peers, instead of a list.
This uses much less memory, at the cost of sometimes failing to
relay an address to a peer-- worst case if the bloom filter happens
to be as full as it gets, 1-in-1,000.
Measured memory usage of a full mruset setAddrKnown: 650Kbytes
Constant memory usage of CRollingBloomFilter addrKnown: 37Kbytes.
This will also help heap fragmentation, because the 37K of storage
is allocated when a CNode is created (when a connection to a peer
is established) and then there is no per-item-remembered memory
allocation.
I plan on testing by restarting a full node with an empty peers.dat,
running a while with -debug=addrman and -debug=net, and making sure
that the 'addr' message traffic out is reasonable.
(suggestions for better tests welcome)
For when you need to keep track of the last N items
you've seen, and can tolerate some false-positives.
Rebased-by: Pieter Wuille <pieter.wuille@gmail.com>
2703412 Fix default binary in p2p tests to use environment variable (Suhas Daftuar)
29bff0e Add some travis debugging for python scripts (Suhas Daftuar)
d76412b Add script manipulation tools for use in mininode testing framework (Suhas Daftuar)
b93974c Add comparison tool test runner, built on mininode (Suhas Daftuar)
6c1d1ba Python p2p testing framework (Suhas Daftuar)
script.py is modified from the code in python-bitcoinlib, and provides tools
for manipulating and creating CScript objects.
bignum.py is a dependency for script.py
script_test.py is an example test that uses the script tools for running a test
that compares the behavior of two nodes, in a comptool- style test, for each of
the test cases in the bitcoin unit test script files, script_valid.json and
script_invalid.json. (This test is very slow to run, but is a proof of concept
for how we can write tests to compare consensus-critical behavior between
different versions of bitcoind.)
bipdersig-p2p.py is another example test in the comptool framework, which tests
deployment of BIP DERSIG for a single node. It uses the script.py tools for
manipulating signatures to be non-DER compliant.
comptool.py creates a tool for running a test suite on top of the mininode p2p
framework. It supports two types of tests: those for which we expect certain
behavior (acceptance or rejection of a block or transaction) and those for
which we are just comparing that the behavior of 2 or more nodes is the same.
blockstore.py defines BlockStore and TxStore, which provide db-backed maps
between block/tx hashes and the corresponding block or tx.
blocktools.py defines utility functions for creating and manipulating blocks
and transactions.
invalidblockrequest.py is an example test in the comptool framework, which
tests the behavior of a single node when sent two different types of invalid
blocks (a block with a duplicated transaction and a block with a bad coinbase
value).
