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Clean up banning levels

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Compared with previous bans, the following changes are made:
 * Txn with empty vin/vout or null prevouts move from 10 DoS
   points to 100.
 * Loose transactions with a dependency loop now result in a ban
   instead of 10 DoS points.
 * Many pre-segwit soft-fork errors now result in a ban.
   Note: Transactions that violate soft-fork script flags since P2SH do not generally
   result in a ban. Also, banning behavior for invalid blocks is dependent on
   whether the node is validating with multiple script check threads, due to a long-
   standing bug. That inconsistency is still present after this commit.
 * Proof of work failure moves from 50 DoS points to a ban.
 * Blocks with timestamps under MTP now result in a ban, blocks
   too far in the future continue to *not* result in a ban.
 * Inclusion of non-final transactions in a block now results in a
   ban instead of 10 DoS points.

Co-authored-by: Anthony Towns <aj@erisian.com.au>
This commit is contained in:
Matt Corallo
2019-01-23 15:14:16 -05:00
committed by Suhas Daftuar
parent b8b4c80146
commit 7b999103e2
5 changed files with 17 additions and 17 deletions
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10
test/functional/feature_block.py
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@@ -630,7 +630,7 @@ class FullBlockTest(BitcoinTestFramework):
while b47.sha256 < target:
b47.nNonce += 1
b47.rehash()
self.send_blocks([b47], False, force_send=True, reject_reason='high-hash')
self.send_blocks([b47], False, force_send=True, reject_reason='high-hash', reconnect=True)
self.log.info("Reject a block with a timestamp >2 hours in the future")
self.move_tip(44)
@@ -681,7 +681,7 @@ class FullBlockTest(BitcoinTestFramework):
b54 = self.next_block(54, spend=out[15])
b54.nTime = b35.nTime - 1
b54.solve()
self.send_blocks([b54], False, force_send=True, reject_reason='time-too-old')
self.send_blocks([b54], False, force_send=True, reject_reason='time-too-old', reconnect=True)
# valid timestamp
self.move_tip(53)
@@ -827,7 +827,7 @@ class FullBlockTest(BitcoinTestFramework):
assert tx.vin[0].nSequence < 0xffffffff
tx.calc_sha256()
b62 = self.update_block(62, [tx])
self.send_blocks([b62], success=False, reject_reason='bad-txns-nonfinal')
self.send_blocks([b62], success=False, reject_reason='bad-txns-nonfinal', reconnect=True)
# Test a non-final coinbase is also rejected
#
@@ -841,7 +841,7 @@ class FullBlockTest(BitcoinTestFramework):
b63.vtx[0].vin[0].nSequence = 0xDEADBEEF
b63.vtx[0].rehash()
b63 = self.update_block(63, [])
self.send_blocks([b63], success=False, reject_reason='bad-txns-nonfinal')
self.send_blocks([b63], success=False, reject_reason='bad-txns-nonfinal', reconnect=True)
# This checks that a block with a bloated VARINT between the block_header and the array of tx such that
# the block is > MAX_BLOCK_BASE_SIZE with the bloated varint, but <= MAX_BLOCK_BASE_SIZE without the bloated varint,
@@ -1255,7 +1255,7 @@ class FullBlockTest(BitcoinTestFramework):
self.log.info("Reject a block with an invalid block header version")
b_v1 = self.next_block('b_v1', version=1)
self.send_blocks([b_v1], success=False, force_send=True, reject_reason='bad-version(0x00000001)')
self.send_blocks([b_v1], success=False, force_send=True, reject_reason='bad-version(0x00000001)', reconnect=True)
self.move_tip(chain1_tip + 2)
b_cb34 = self.next_block('b_cb34', version=4)