Jeffrey Wilcke
af28736bd0
Merge pull request #1064 from karalabe/downloader-attacks
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Fix two additional download vulnerabilities
2015-05-21 09:00:12 -07:00
Péter Szilágyi
06a041589f
eth, eth/downloader: remove duplicate consts, bump hash fetch to 2K
2015-05-21 18:16:04 +03:00
Péter Szilágyi
52db6d8be5
eth/downloader: circumvent a forged block chain with known parent attack
2015-05-21 08:37:27 +03:00
Péter Szilágyi
e8b22b9253
eth/downloader: prevent a peer from dripping bad hashes
2015-05-21 08:07:58 +03:00
Péter Szilágyi
6f54eb6d9a
eth/downloader: fix test to it doesn't time out on a slow machine
2015-05-20 10:15:42 +03:00
Péter Szilágyi
412cf98bbc
eth/downloader: fix #992 , where tests may time out on a slow machine
2015-05-15 21:16:42 +03:00
Péter Szilágyi
5c1a7b965c
eth/downloader: circumvent a fake blockchain attack
2015-05-15 15:04:15 +03:00
Péter Szilágyi
83226762c2
eth, eth/downloader: detect and handle madeup hash attacks
2015-05-15 15:01:58 +03:00
Péter Szilágyi
72411eb24c
eth/downloader: circumvent hash reordering attacks
2015-05-15 15:01:58 +03:00
Péter Szilágyi
bcc2980179
eth/downloader: check sync after failed attacks
2015-05-15 15:01:58 +03:00
Péter Szilágyi
366e9627e8
eth/downloader: add a test for detecting missing blocks
2015-05-15 15:01:58 +03:00
Péter Szilágyi
cd2fb09051
eth, eth/downloader: prevent hash repeater attack
2015-05-15 15:01:58 +03:00
obscuren
cfb2b51b74
eth/downloader: fixed test
2015-05-15 12:47:32 +02:00
Péter Szilágyi
fe87feccb1
eth/downloader: add a small additional check to the test
2015-05-14 15:44:54 +03:00
Péter Szilágyi
3eda70c64c
eth, eth/downloader: remove parent verification from the downlaoder
2015-05-14 15:38:49 +03:00
Péter Szilágyi
a4246c2da6
eth, eth/downloader: handle a potential unknown parent attack
2015-05-14 15:24:18 +03:00
Péter Szilágyi
d2d5dbc6fb
eth/downloader: fix active peer shadowing, polish func names
2015-05-13 13:13:43 +03:00
Péter Szilágyi
685862d2ce
eth/downloader: fix #910 , thread safe peers & polishes
2015-05-11 14:26:20 +03:00
obscuren
05715f27cf
eth: added a cancel method for the downloader
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Added a cancel method to the downloader which gracefully shuts down any
active syncing process (hash fetching or block downloading) and resets
the queue and remove any pending blocks.
Issue with the downloader which would stall because of an active ongoing
process when an invalid block was found.
2015-05-10 00:34:07 +02:00
Péter Szilágyi
bd5720f480
eth, eth/downloader: handle sync errors a bit more gracefully
2015-05-08 15:22:48 +03:00
Péter Szilágyi
9d188f73b5
eth, eth/downloader: make synchronize thread safe
2015-05-07 21:07:20 +03:00
Péter Szilágyi
43901c9282
eth/downloader: fix priority queue reset, add throttling test
2015-05-07 14:40:50 +03:00
Péter Szilágyi
4800c94392
eth/downloader: prioritize block fetch based on chain position, cap memory use
2015-05-07 10:57:34 +03:00
obscuren
1470b22e90
downloader: hash downloading recovery
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If a peer fails to respond (disconnect, etc) during hash downloading
switch to a different peer which has it's current_hash in the queue's
peer set.
2015-05-03 16:27:03 +02:00
obscuren
25bc88113f
eth/downloader: added additional tests
2015-05-03 14:09:33 +02:00
obscuren
016f152b36
eth, eth/downloader: Moved block processing & graceful shutdown
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The downloader is no longer responsible for processing blocks. The
eth-protocol handler now takes care of this instead.
Added graceful shutdown during block processing. Closes #846
2015-05-01 15:58:44 +02:00
obscuren
c930045834
core: fixed tetst to reflect (int, error) return by insertChain
2015-04-29 15:27:04 +02:00
obscuren
a9e4b96573
eth/downloader: fixed tests
2015-04-24 15:56:18 +02:00
obscuren
31f82eb334
eth, eth/downloader: don't require td on downloader. Fixed tests
2015-04-24 15:04:58 +02:00
obscuren
ed07ffcde5
downloader: fixed tests with low ttl
2015-04-19 17:37:01 +02:00
obscuren
c58918c84a
downloader: moved chunk ignoring. Fixes issue with catching up
2015-04-19 13:30:34 +02:00
obscuren
a8a2b2a488
downloader: added missing blocks catchup functionality
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When a parent is missing in the block list an attempt should be made to
fetch the missing parent and grandparents.
2015-04-13 16:38:32 +02:00
obscuren
acf8452c33
downloader: implemented new downloader
2015-04-12 12:38:25 +02:00
