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
obscuren
c2ef8682fe
eth/downloader: moved start event
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Start event has moved because it could possibly could stall the miner
2015-05-16 13:02:30 +02:00
Péter Szilágyi
f3ae8f50a5
eth/downloader: circumvent download race between crosscheck and hashes
2015-05-15 20:54:10 +03:00
Péter Szilágyi
4f0d88cb02
eth/downloader: fix cancel channel double close
2015-05-15 19:43:42 +03:00
Péter Szilágyi
5c1a7b965c
eth/downloader: circumvent a fake blockchain attack
2015-05-15 15:04:15 +03:00
Péter Szilágyi
b517967f86
eth/downloader: don't penalize for stale cross checks
2015-05-15 15:03:08 +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
b71091e337
eth, eth/downloader, miner: use download events to check miner start
2015-05-15 00:43:10 +02:00
Jeffrey Wilcke
060a07cf69
Merge pull request #974 from karalabe/downloader-fix-unknown-parent-attack
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eth, eth/downloader: handle a potential unknown parent attack
2015-05-14 08:16:30 -07:00
Péter Szilágyi
ebf1eb9359
eth/downloader: remove a previous leftover
2015-05-14 15:40:28 +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
Jeffrey Wilcke
2b06fe3eff
Merge pull request #950 from karalabe/downloader-cancel-sync
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eth/downloader: fix deliveries to check for sync cancels
2015-05-14 04:05:13 -07:00
Péter Szilágyi
910a6d4e46
eth/downloader: fix nil panic caused by wrong variable use
2015-05-13 17:25:01 +03:00
Péter Szilágyi
de3a71cafd
eth/downloader: remove a redundant sync progress check
2015-05-13 16:56:01 +03:00
Péter Szilágyi
48ee0777a5
eth/downloader: add a user sync notificaton
2015-05-13 16:03:05 +03:00
Péter Szilágyi
ec57aa64cd
eth/downloader: sync the cancel channel during cancel too
2015-05-13 14:01:08 +03:00
Péter Szilágyi
ee0c892303
eth/downloader: fix deliveries to check for sync cancels
2015-05-13 13:47:21 +03:00
Péter Szilágyi
d2d5dbc6fb
eth/downloader: fix active peer shadowing, polish func names
2015-05-13 13:13:43 +03:00
obscuren
48bd48876c
eth, eth/downloader: moved pending queue error message to debug
2015-05-11 17:27:34 +02:00
Péter Szilágyi
064cf16099
eth/downloader: use count instead of peers, clearer
2015-05-11 17:21:22 +02:00
Péter Szilágyi
d37a2559b9
eth/downloader: revert to demotion, use harsher penalty
2015-05-11 17:21:22 +02:00
Péter Szilágyi
70c65835f4
eth/downloader: fix #910 , thread safe peers & polishes
2015-05-11 17:21:22 +02:00
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
edad47bf0e
eth/downloader: fix leftover state between syncs
2015-05-08 17:39:03 +03:00
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
45f8304f3c
eth/downloader: fix expiration not running while fetching
2015-05-07 12:59:19 +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
493181ea09
eth/downloader: changed has to blockHashes for chain linking
2015-05-03 14:10:31 +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
8595198c1b
eth/downloader: delete blocks from queue
2015-04-30 17:51:47 +02:00
obscuren
9b6e8f6195
eth, eth/downloader: remove bad peers from peer set
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Peers in the eth protocol handler are now being ignored for catch up.
2015-04-30 12:38:16 +02:00
obscuren
f8c27d7159
eth/downloader: drop block
2015-04-29 19:55:04 +02:00
obscuren
dfbf580354
eth/downloader: ignore orphan blocks in the downloader.
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When blocks have been sorted and are being processed, orphan blocks
should be ignored and thrown out. The protocol handler is responsible
for downloading blocks which have missing parents.
2015-04-29 14:49:37 +02:00
obscuren
735b029db9
core: return the index of the block that failed when inserting a chain
2015-04-29 14:00:24 +02:00
obscuren
13364a2dcf
eth/downloader: reset the chain when parent is missing during processing
2015-04-29 13:40:39 +02:00
obscuren
4b7bdc3766
eth: check if downloader is busy before showing log message
2015-04-29 12:51:05 +02:00
obscuren
7ce3d06402
eth/downloader: removed update loop and synch channel
2015-04-24 18:28:46 +02:00
obscuren
d84c2202e7
eth, eth/downloader: simplified synchronisation process
2015-04-24 15:38:10 +02:00
obscuren
31f82eb334
eth, eth/downloader: don't require td on downloader. Fixed tests
2015-04-24 15:04:58 +02:00
obscuren
b86e7526e1
eth, eth/downloader: moved peer selection to protocol handler
2015-04-24 14:40:32 +02:00
obscuren
45da3e17e2
core: added chain head reset to known block
2015-04-20 12:29:02 +02:00
obscuren
5dd56bb474
geth: admin download status
2015-04-19 21:46:19 +02:00
obscuren
ed07ffcde5
downloader: fixed tests with low ttl
2015-04-19 17:37:01 +02:00
obscuren
dcf1a1988a
moved
2015-04-19 17:14:15 +02:00
obscuren
cce4158cfc
Removed debug println
2015-04-19 13:33:14 +02:00
obscuren
c58918c84a
downloader: moved chunk ignoring. Fixes issue with catching up
2015-04-19 13:30:34 +02:00
obscuren
5c59d95532
downloader: defer peer reset after download
2015-04-19 01:39:37 +02:00
obscuren
86ecdcd5ff
downloader: reset hashTtl on receive
2015-04-19 00:15:05 +02:00
obscuren
50e096e627
downloader: don't remove peers. keep them around
2015-04-18 23:56:08 +02:00
obscuren
6830ddb659
downloader: free up peers from work when the downloader resets
2015-04-18 20:25:55 +02:00
obscuren
7c5d50f627
downloader: throw an error if there are no peers available for download
...
If all peers have been tried during the block download process and some
hashes are unfetchable (available peers > 0 and fetching == 0) throw an
error so the process can be aborted.
2015-04-18 19:30:29 +02:00
obscuren
78e37e98e7
downloader: fixed a race condition for download status
2015-04-18 19:14:25 +02:00
obscuren
0d536734fe
eth: adapted to new synchronous api of downloader's AddBlock
2015-04-18 18:57:59 +02:00
obscuren
c2c24b3bb4
downloader: improved downloading and synchronisation
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* Downloader's peers keeps track of peer's previously requested hashes
so that we don't have to re-request
* Changed `AddBlock` to be fully synchronous
2015-04-18 18:55:13 +02:00
obscuren
60613b57d1
downloader: make sure that hashes are only accepted from the active peer
2015-04-18 17:35:03 +02:00
obscuren
8244825bbf
downloader: reset the queue if a peer response with an empty hash set
2015-04-18 15:14:12 +02:00
obscuren
8f873b762b
downloader: all handlers check for isBusy
2015-04-18 03:15:26 +02:00
obscuren
2339ee9910
Merge branch 'develop' into downloader-proto
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Conflicts:
eth/downloader/downloader.go
2015-04-18 01:10:32 +02:00
obscuren
eac2df02d1
downloader: fixed a typo
2015-04-17 00:11:45 +02:00
obscuren
205378016f
downloader: added demotion / promotion in prep. for rep. system
2015-04-16 02:16:33 +02:00
obscuren
eda10c7317
downloader: updated downloader and fixed issues with catch up
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Properly ignore blocks coming from peers not in our peer list (blocked)
and do never request anything from bad peers. Added some checks to
account for blocks known when requesting hashes (missing parents).
2015-04-16 01:29:32 +02:00
obscuren
c4678ffd77
downloader: updated downloader and fixed issues with catch up
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Properly ignore blocks coming from peers not in our peer list (blocked)
and do never request anything from bad peers. Added some checks to
account for blocks known when requesting hashes (missing parents).
2015-04-16 00:14:31 +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
7dcb9825c3
downloader: return an error for peer.fetch and return chunk to queue
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If a peer was somehow already fetching and somehow managed to end up in
the `available` pool it should return it's work.
2015-04-12 13:36:01 +02:00
obscuren
acf8452c33
downloader: implemented new downloader
2015-04-12 12:38:25 +02:00
