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130 Commits

Author SHA1 Message Date
Felix Lange 9be5d5cd90 eth/downloader: fix negative balance issue in tests 
The test chain generated by makeChainFork included invalid uncle
headers, crashing the generator during the state commit.

The headers were invalid because they used the iteration counter as the
block number, even though makeChainFork uses a block with number > 0 as
the parent. Fix this by introducing BlockGen.Number, which allows
accessing the actual number of the block being generated.
 2015-12-18 12:09:10 +01:00
Felix Lange dd09af27af eth/downloader: run tests in parallel 2015-11-19 14:18:35 +01:00
Felix Lange 900da3d800 eth/downloader: don't hang for spurious deliveries 
Unexpected deliveries could block indefinitely if they arrived at the
right time. The fix is to ensure that the cancellation channel is
always closed when the sync ends, unblocking any deliveries. Also remove
the atomic check for whether a sync is currently running because it
doesn't help and can be misleading.

Cancelling always seems to break the tests though. The downloader
spawned d.process whenever new data arrived, making it somewhat hard to
track when block processing was actually done. Fix this by running
d.process in a dedicated goroutine that is tied to the lifecycle of the
sync. d.process gets notified of new work by the queue instead of being
invoked all the time. This removes a ton of weird workaround code,
including a hairy use of atomic CAS.
 2015-11-19 14:18:34 +01:00
Péter Szilágyi 5b0ee8ec30 core, eth, trie: fix data races and merge/review issues 2015-10-21 16:49:55 +03:00
Péter Szilágyi a9d8dfc8e7 core, eth: roll back uncertain headers in failed fast syncs 2015-10-19 10:03:10 +03:00
Péter Szilágyi b97e34a8e4 eth/downloader: concurrent receipt and state processing 2015-10-19 10:03:10 +03:00
Péter Szilágyi ab27bee25a core, eth, trie: direct state trie synchronization 2015-10-19 10:03:09 +03:00
Péter Szilágyi 832b37c822 core, eth: receipt chain reconstruction 2015-10-19 10:03:09 +03:00
Péter Szilágyi f186b39018 eth/downloader: add fast and light sync strategies 2015-10-19 10:03:09 +03:00
Péter Szilágyi 47f62a67aa eth/downloader: match capabilities when querying idle peers 2015-10-02 13:20:41 +03:00
Péter Szilágyi 99b62f36b6 eth/downloader: header-chain order and ancestry check 2015-09-15 14:45:53 +03:00
Péter Szilágyi 0a7d059b6a eth, rpc: standardize the chain sync progress counters 2015-09-15 14:45:53 +03:00
Péter Szilágyi cdc2662c40 core: split out TD from database and all internals 2015-09-11 17:42:25 +03:00
Péter Szilágyi 47a7fe5d22 eth: port the synchronisation algo to eth/62 2015-08-25 17:48:47 +03:00
Péter Szilágyi ca88e18f59 eth: kill off protocol eth/60 in preparation for eth/62 2015-08-24 17:57:28 +03:00
Péter Szilágyi 6adbaabc65 eth, eth/downloader: don't report stall if fetcher filled the block 2015-07-29 15:39:08 +03:00
Felix Lange bfbcfbe4a9 all: fix license headers one more time 
I forgot to update one instance of "go-ethereum" in commit 3f047be5a.
 2015-07-23 18:35:11 +02:00
Felix Lange 3f047be5aa all: update license headers to distiguish GPL/LGPL 
All code outside of cmd/ is licensed as LGPL. The headers
now reflect this by calling the whole work "the go-ethereum library".
 2015-07-22 18:51:45 +02:00
Péter Szilágyi 492d5454b1 eth/downloader: drop peer if advertised TD but won't delvier 2015-07-09 14:40:18 +03:00
Felix Lange ea54283b30 all: update license information 2015-07-07 14:12:44 +02:00
Péter Szilágyi f857fb7600 eth/downloader: fix a rare test race on the OSX CI 2015-07-03 13:01:22 +03:00
Péter Szilágyi f43c07cb3c eth, eth/downloader: transition to eth 61 2015-06-30 19:05:06 +03:00
Péter Szilágyi af51dc4d63 eth, eth/downloader: pass the eth protocol version through 2015-06-30 19:00:01 +03:00
Felix Lange e0e5f74776 eth/downloader, eth/fetcher: use core.GenerateChain in tests 
TestMadeupParentBlockChainAttack has been deleted because it was too
hard to port and the attack that it checks the prevention of is being
averted in a different way (through a protocol change).
 2015-06-29 18:51:47 +02:00
Felix Lange 1d42888d30 core/types: make blocks immutable 2015-06-29 18:51:47 +02:00
Péter Szilágyi 2a1b722d04 eth/fetcher: fix timer reset bug, add initial tests 2015-06-18 15:56:07 +03:00
Péter Szilágyi 4365668462 eth/downloader: extend slow test to fix even slower CI server... 2015-06-18 00:42:02 +03:00
Péter Szilágyi 55dd8fd621 eth/downloader: always reenter processing if not exiting 2015-06-18 00:26:54 +03:00
Péter Szilágyi 2f4cbe22f5 eth, eth/downloader: fix processing interrupt caused by temp cancel 2015-06-18 00:04:57 +03:00
Péter Szilágyi 4a1e82cf3f eth/downloader: fix #1280, overlapping (good/bad) delivery hang 2015-06-17 12:03:16 +03:00
Péter Szilágyi b240983e2b eth, eth/downloader: do async block fetches, add dl tests 2015-06-15 12:26:05 +03:00
Péter Szilágyi 30a9939388 eth/downloader: sanity test for multi peer syncs 2015-06-15 09:22:37 +03:00
Péter Szilágyi fc7abd9886 eth, eth/downloader: move block processing into the downlaoder 2015-06-15 09:22:37 +03:00
Péter Szilágyi 0fc71877a7 eth/downloader: add valid peer during attacks (check interference) 2015-06-15 09:22:37 +03:00
Péter Szilágyi 80833f8137 eth/downloader: instreument and test the sync peer drop 2015-06-15 09:22:37 +03:00
Péter Szilágyi 2dd6a62f67 eth/downloader: support individual peers in the test suite 2015-06-15 09:22:36 +03:00
Péter Szilágyi 2937903299 eth/downloader: remove uneeded testing functions 2015-06-15 09:22:36 +03:00
Péter Szilágyi 66d3dc8690 eth, eth/downloader: move peer removal into downloader 2015-06-15 09:22:36 +03:00
Péter Szilágyi 4ed3509a02 eth/downloader: test registration rejection on head ban 2015-06-08 15:02:52 +03:00
Péter Szilágyi 63c6cedb14 eth/downloader: cap the hash ban set, add test for it 2015-06-08 14:12:00 +03:00
Péter Szilágyi 4b2dd44711 eth/downloader: fix throttling test to be less timing dependent 2015-06-08 13:23:58 +03:00
Péter Szilágyi b40c796ff7 eth/downloader: preallocate the block cache 2015-06-08 13:23:58 +03:00
Péter Szilágyi 9da0232eef eth/downloader: update test for shitty travis 2015-06-08 13:23:58 +03:00
Péter Szilágyi 84bc93d8cb eth/downloader: accumulating hash bans for reconnecting attackers 2015-06-08 13:23:58 +03:00
Péter Szilágyi eedb25b22a eth/downloader: clean up tests and unused variables 2015-06-08 13:23:57 +03:00
Péter Szilágyi c9a546c310 eth/downloader: add a basic block download congestion control 2015-06-03 14:40:11 +03:00
Péter Szilágyi eafdc1f8e3 eth, eth/downloader: surface downloaded block origin, drop on error 2015-05-26 14:00:21 +03:00
Jeffrey Wilcke af28736bd0 Merge pull request #1064 from karalabe/downloader-attacks 
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 
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 
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 
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 
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