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295 Commits

Author SHA1 Message Date
Péter Szilágyi 4992765032 p2p/discover: fix goroutine leak due to blocking on sync.Once 2015-04-28 10:28:04 +03:00
Péter Szilágyi 437cf4b3ac p2p/discover: add node expirer and related tests 2015-04-27 17:38:28 +03:00
Péter Szilágyi a136e2bb22 p2p/discover: parametrize nodedb version, add persistency tests 2015-04-27 15:28:17 +03:00
Péter Szilágyi 75fd738dea p2p/discover: drop a superfluous warning 2015-04-27 15:06:31 +03:00
Péter Szilágyi 706da56f75 p2p/discover: wrap the pinger to update the node db too 2015-04-27 14:56:42 +03:00
Péter Szilágyi 85b4b44235 p2p/discover: use iterator based seeding, drop old protocol test 2015-04-27 14:45:35 +03:00
Péter Szilágyi 8de8f61d36 p2p/discover: write the basic tests, catch RLP bug 2015-04-27 12:33:06 +03:00
Péter Szilágyi 0201c04b95 p2p/discovery: fix issues raised in the nodeDb PR 2015-04-27 10:19:16 +03:00
Péter Szilágyi 8646365b42 cmd/bootnode, eth, p2p, p2p/discover: use a fancier db design 2015-04-24 18:04:41 +03:00
Péter Szilágyi 6def110c37 cmd/bootnode, eth, p2p, p2p/discover: clean up the seeder and mesh into eth. 2015-04-24 11:33:55 +03:00
Péter Szilágyi 971702e7a1 p2p/discovery: fix broken tests due to API update 2015-04-24 11:23:20 +03:00
Péter Szilágyi af923c965f p2p/discovery: use the seed table for finding nodes, auto drop stale ones 2015-04-24 11:23:20 +03:00
Péter Szilágyi 5f735d6fce cmd, eth, p2p, p2p/discover: init and clean up the seed cache 2015-04-24 11:23:20 +03:00
Felix Lange 936c8e19ff p2p/discover: store nodes in leveldb 2015-04-24 11:23:20 +03:00
Felix Lange 635b66acdc p2p: return zero node from Self if the server is not running 
This helps with fixing the tests for cmd/geth to run without networking.
 2015-04-22 12:31:19 +02:00
Felix Lange 9c7281c17e p2p: make DiscReason bigger than byte 
We decode into [1]DiscReason in a few places. That doesn't work anymore
because package rlp no longer accepts RLP lists for byte arrays.
 2015-04-17 14:45:10 +02:00
Felix Lange eedbb1ee9a p2p/discover: use rlp.DecodeBytes 2015-04-17 14:45:09 +02:00
Felix Lange 56a48101dc cmd/rlpdump, cmd/utils, eth, p2p, whisper: use rlp input limit 2015-04-17 14:45:09 +02:00
Felix Lange 5528abc795 p2p: fix the dial timer 
The dial timer was not reset properly when the peer count reached
MaxPeers.
 2015-04-17 08:17:01 +02:00
obscuren 474aa924ca p2p: added limiter function to limit package broadcasting 2015-04-14 12:47:31 +02:00
Felix Lange 0217652d1b p2p/discover: improve timer handling for reply timeouts 2015-04-13 18:08:11 +02:00
Felix Lange b8aeb04f6f p2p/discover: remove unused field Node.activeStamp 2015-04-13 17:44:14 +02:00
Felix Lange b9929d289d p2p: fix unsynchronized map access during Server shutdown 
removePeer can be called even after listenLoop and dialLoop have returned.
 2015-04-13 17:37:32 +02:00
Felix Lange 995fab2ebc p2p: fix yet another disconnect hang 
Peer.readLoop will only terminate if the connection is closed. Fix the
hang by closing the connection before waiting for readLoop to terminate.

This also removes the british disconnect procedure where we're waiting
for the remote end to close the connection. I have confirmed with
@subtly that cpp-ethereum doesn't adhere to it either.
 2015-04-13 17:34:08 +02:00
Felix Lange 79a6782c1c p2p: fix goroutine leak when handshake read fails 
This regression was introduced in b3c058a9e4.
 2015-04-13 17:06:19 +02:00
Felix Lange c5332537f5 p2p: limit number of lingering inbound pre-handshake connections 
This is supposed to apply some back pressure so Server is not accepting
more connections than it can actually handle. The current limit is 50.
This doesn't really need to be configurable, but we'll see how it
behaves in our test nodes and adjust accordingly.
 2015-04-10 17:24:41 +02:00
Felix Lange 56977c225e p2p: use RLock instead of Lock for pre-dial checks 2015-04-10 17:23:09 +02:00
Felix Lange b3c058a9e4 p2p: improve disconnect signaling at handshake time 
As of this commit, p2p will disconnect nodes directly after the
encryption handshake if too many peer connections are active.
Errors in the protocol handshake packet are now handled more politely
by sending a disconnect packet before closing the connection.
 2015-04-10 16:57:56 +02:00
Felix Lange 99a1db2d40 p2p: don't mess with the socket deadline in Peer.readLoop 
netWrapper already sets a read deadline in ReadMsg.
 2015-04-10 13:26:28 +02:00
Felix Lange 145330fdf2 p2p: properly decrement peer wait group counter for setup errors 2015-04-10 13:26:27 +02:00
Felix Lange f1d710af00 p2p: fix Peer shutdown deadlocks 
There were multiple synchronization issues in the disconnect handling,
all caused by the odd special-casing of Peer.readLoop errors. Remove the
special handling of read errors and make readLoop part of the Peer
WaitGroup.

Thanks to @Gustav-Simonsson for pointing at arrows in a diagram
and playing rubber-duck.
 2015-04-10 13:26:27 +02:00
Felix Lange 22d1f0faf1 p2p: improve peer selection logic 
This commit introduces a new (temporary) peer selection
strategy based on random lookups.

While we're here, also implement the TODOs in dialLoop.
 2015-04-10 13:26:27 +02:00
Felix Lange 7be05b4b9d p2p/discover: don't log packet content 2015-04-10 13:26:27 +02:00
Felix Lange 9cd8c96157 p2p/discover: make packet processing less concurrent 2015-04-10 13:26:27 +02:00
obscuren 688d118c7e Updated logging 2015-04-07 14:57:04 +02:00
Felix Lange a77c431e37 p2p/discover: fix off by one error causing buckets to contain duplicates 2015-04-01 17:00:12 +02:00
Felix Lange de7af720d6 p2p/discover: implement node bonding 
This a fix for an attack vector where the discovery protocol could be
used to amplify traffic in a DDOS attack. A malicious actor would send a
findnode request with the IP address and UDP port of the target as the
source address. The recipient of the findnode packet would then send a
neighbors packet (which is 16x the size of findnode) to the victim.

Our solution is to require a 'bond' with the sender of findnode. If no
bond exists, the findnode packet is not processed. A bond between nodes
α and β is created when α replies to a ping from β.

This (initial) version of the bonding implementation might still be
vulnerable against replay attacks during the expiration time window.
We will add stricter source address validation later.
 2015-04-01 17:00:12 +02:00
Felix Lange 92928309b2 p2p/discover: add version number to ping packet 
The primary motivation for doing this right now is that old PoC 8
nodes and newer PoC 9 nodes keep discovering each other, causing
handshake failures.
 2015-04-01 15:53:04 +02:00
zelig 9880f99ccb fix p2p/testlog_test 2015-03-23 16:41:41 +00:00
obscuren a7ad9c309b Merge branch 'develop' into conversion 2015-03-21 14:52:42 +01:00
obscuren 4f5b362bda %#x => %x 2015-03-20 12:52:03 +01:00
Felix Lange b9e0b11e7d p2p: interrupt MsgPipe payload read/write 
This is better because protocols might not actually read the payload for
some errors (msg too big, etc.) which can be a pain to test with the old
behaviour.
 2015-03-19 15:16:06 +01:00
Felix Lange a7bced779a p2p: log disconnect requests 
This helps a lot with debugging.
 2015-03-19 15:15:07 +01:00
Felix Lange 5ba51594c7 p2p: use package rlp to encode messages 
Message encoding functions have been renamed to catch any uses.
The switch to the new encoder can cause subtle incompatibilities.
If there are any users outside of our tree, they will at least be
alerted that there was a change.

NewMsg no longer exists. The replacements for EncodeMsg are called
Send and SendItems.
 2015-03-19 15:11:02 +01:00
Felix Lange 4811f460e7 p2p: export ExpectMsg (for eth protocol testing) 2015-03-19 15:08:04 +01:00
zelig b3e133dd15 Merge branch 'frontier/js' into frontier/nodeadmin.js 2015-03-16 22:50:29 +07:00
obscuren b523441361 Moved ethutil => common 2015-03-16 11:27:38 +01:00
zelig e150832734 p2p: server>discover table Self=Node exported 2015-03-15 13:38:41 +07:00
Taylor Gerring 485e37e889 Move MakeName to ethutil 2015-03-11 14:29:07 -05:00
Felix Lange 215c763d53 eth, p2p: delete p2p.Blacklist 
It is unused and untested right now. We can
bring it back later if required.
 2015-03-04 16:54:36 +01:00
Felix Lange 429828cd92 p2p: reject messages that cannot be written as simple RLPx frames 
Until chunked frames are implemented we cannot send messages
with a size overflowing uint24.
 2015-03-04 16:42:01 +01:00
Felix Lange 22659a7fea p2p: restore read/write timeouts 
They got lost in the transition to rlpxFrameRW.
 2015-03-04 16:42:00 +01:00
Felix Lange 7964f30dcb p2p: msg.Payload contains list data 
With RLPx frames, the message code is contained in the
frame and is no longer part of the encoded data.

EncodeMsg, Msg.Decode have been updated to match.
Code that decodes RLP directly from Msg.Payload will need
to change.
 2015-03-04 12:27:24 +01:00
Felix Lange 21649100b1 p2p: verify protocol handshake node ID 2015-03-04 12:27:24 +01:00
Felix Lange 7d39fd6678 p2p: make encryption handshake code easier to follow 
This mostly changes how information is passed around.
Instead of using many function parameters and return values,
put the entire state in a struct and pass that.

This also adds back derivation of ecdhe-shared-secret. I deleted
it by accident in a previous refactoring.
 2015-03-04 12:27:24 +01:00
Felix Lange 2c505efd1e p2p/discover: add NodeID.Pubkey 2015-03-04 12:27:24 +01:00
Felix Lange d344054e5a p2p: make RLPx frame MAC 16 bytes as defined in the spec 2015-03-04 12:27:24 +01:00
Felix Lange d084aed5e9 p2p: delete frameRW 2015-03-04 12:27:24 +01:00
Felix Lange 736e632215 p2p: use RLPx frames for messaging 2015-03-04 12:27:23 +01:00
Felix Lange 51e01cceca p2p: encrypted and authenticated RLPx frame I/O 2015-03-04 12:27:23 +01:00
Felix Lange 936dd0f3bc p2p: add basic RLPx frame I/O 2015-03-04 12:27:23 +01:00
Felix Lange 3719db352a p2p: emit JSON connect/disconnect events 2015-02-19 17:09:33 +01:00
Felix Lange dd871e791c p2p: initialize Server.ourHandshake before accepting connections 2015-02-19 17:08:18 +01:00
Felix Lange 3dbd32093c p2p: enable devp2p ping 
This should prevent connection drops.
 2015-02-19 16:54:54 +01:00
Felix Lange 73f94f3755 p2p: disable encryption handshake 
The diff is a bit bigger than expected because the protocol handshake
logic has moved out of Peer. This is necessary because the protocol
handshake will have custom framing in the final protocol.
 2015-02-19 16:54:53 +01:00
Jeffrey Wilcke c1d0693cb1 Merge pull request #325 from fjl/deps-cleanup 
Cleanup imports
 2015-02-17 23:19:45 +01:00
Felix Lange 7ea131d4ff p2p/discover: fix pending replies iteration 
Range expressions capture the length of the slice once before the first
iteration. A range expression cannot be used here since the loop
modifies the slice variable (including length changes).
 2015-02-17 15:21:39 +01:00
Felix Lange f965f41b6e p2p/nat: switch to github.com/huin/goupnp 
My temporary fix was merged upstream.
 2015-02-17 13:10:11 +01:00
Felix Lange 34d0e1b2c3 p2p: fix ecies dependency in tests 
We forgot to update this reference when moving ecies into the
go-ethereum repo.
 2015-02-17 12:04:20 +01:00
obscuren 09e53367a2 Use a mutex write-lock for a write operation 2015-02-15 02:13:24 +01:00
obscuren 65159d65c8 Merge branch 'develop' of github.com-obscure:ethereum/go-ethereum into develop 2015-02-14 00:27:46 +01:00
obscuren 84f7c966f7 Moved ECIES to repo & added secondary title for webview 
* ECIES moved from obscuren to ethereum
* Added html META[name=badge] to reflect menuItem.secondaryTitle
 2015-02-14 00:25:47 +01:00
Felix Lange 4bef3ce284 p2p: print Cap as name/version 2015-02-13 23:54:34 +01:00
Felix Lange 32a9c0ca80 p2p: bump devp2p protcol version to 3 
For compatibility with cpp-ethereum
 2015-02-13 15:08:40 +01:00
Felix Lange fd3e1061e0 p2p: handle disconnect before protocol handshake 2015-02-13 15:06:47 +01:00
Felix Lange cf754b9483 p2p/discover: fix race in ListenUDP 
udp.Table was assigned after the readLoop started, so
packets could arrive and be processed before the Table was there.
 2015-02-13 15:06:47 +01:00
Felix Lange 5cc1256fd6 p2p: ensure we don't dial ourself 
addPeer doesn't allow self connects, but we can avoid opening
connections in the first place.
 2015-02-13 15:06:47 +01:00
Felix Lange 7101f44998 p2p: add I/O timeout for encrytion handshake 2015-02-13 15:06:47 +01:00
Felix Lange 22ee366ed6 p2p: fix goroutine leak for invalid peers 
The deflect logic called Disconnect on the peer, but the peer never ran
and wouldn't process the disconnect request.
 2015-02-13 15:06:46 +01:00
Felix Lange 5110f80bba p2p: improve read deadlines 
There are now two deadlines, frameReadTimeout and payloadReadTimeout.

The frame timeout is longer and allows for connections that are idle.
The message timeout is still short and ensures that we don't get stuck
in the middle of a message.
 2015-02-13 14:44:00 +01:00
Felix Lange 170eb3ac68 p2p/discover: map listening port using configured mechanism 2015-02-13 11:39:32 +01:00
Felix Lange 82f0bd9009 p2p/discover: code review fixes 2015-02-13 11:39:31 +01:00
Felix Lange d0a2e655c9 cmd/ethereum, cmd/mist, eth, p2p: use package p2p/nat 
This deletes the old NAT implementation.
 2015-02-13 11:39:31 +01:00
Felix Lange 1543833ca0 p2p/nat: new package for port mapping stuff 
I have verified that UPnP and NAT-PMP work against an older version of
the MiniUPnP daemon running on pfSense. This code is kind of hard to
test automatically.
 2015-02-13 11:39:31 +01:00
Felix Lange 9915d3c3be p2p/discover: deflake UDP tests 2015-02-09 11:02:32 +01:00
Felix Lange 028775a086 cmd/ethereum, cmd/mist: add flag for discovery bootstrap nodes 2015-02-07 00:52:49 +01:00
Felix Lange 2cf4fed11b cmd/mist, eth, javascript, p2p: use Node URLs for peer suggestions 2015-02-07 00:46:56 +01:00
Felix Lange e34d134102 p2p: fixes for actual connections 
The unit test hooks were turned on 'in production'.
 2015-02-07 00:43:52 +01:00
Felix Lange 8564eb9f7e p2p/discover: add node URL functions, distinguish TCP/UDP ports 
The discovery RPC protocol does not yet distinguish TCP and UDP ports.
But it can't hurt to do so in our internal model.
 2015-02-07 00:12:23 +01:00
Felix Lange 5bdc115943 p2p: integrate p2p/discover 
Overview of changes:

- ClientIdentity has been removed, use discover.NodeID
- Server now requires a private key to be set (instead of public key)
- Server performs the encryption handshake before launching Peer
- Dial logic takes peers from discover table
- Encryption handshake code has been cleaned up a bit
- baseProtocol is gone because we don't exchange peers anymore
- Some parts of baseProtocol have moved into Peer instead
 2015-02-06 00:00:36 +01:00
Felix Lange 739066ec56 p2p/discover: add some helper functions 2015-02-06 00:00:36 +01:00
Felix Lange 12224c7f59 p2p/discover: new package implementing the Node Discovery Protocol 2015-02-06 00:00:36 +01:00
zelig 2e48d39fc7 key generation abstracted out, for testing with deterministic keys 2015-02-06 00:00:36 +01:00
zelig 488a042736 fix clientidentity test after privkey removed 2015-02-06 00:00:36 +01:00
zelig 71765957e4 get rid of Private Key in ClientIdentity 2015-02-06 00:00:36 +01:00
zelig 68205dec9f make crypto handshake calls package level, store privateKey on peer + tests ok 2015-02-06 00:00:36 +01:00
zelig 4499743522 apply handshake related improvements from p2p.crypto branch 2015-02-06 00:00:35 +01:00
zelig 54252ede31 add temporary forced session token generation 2015-02-06 00:00:35 +01:00
zelig faa069a126 peer-level integration test for crypto handshake 
- add const length params for handshake messages
- add length check to fail early
- add debug logs to help interop testing (!ABSOLUTELY SHOULD BE DELETED LATER)
- wrap connection read/writes in error check
- add cryptoReady channel in peer to signal when secure session setup is finished
- wait for cryptoReady or timeout in TestPeersHandshake
 2015-02-06 00:00:35 +01:00
zelig 20aade56c3 chop first byte when cryptoid.PubKeyS is set from identity.Pubkey() since this is directly copied in the auth message 2015-02-06 00:00:35 +01:00
zelig 1f2adb05b5 add initial peer level test (failing) 2015-02-06 00:00:35 +01:00
zelig 4afde4e738 add code documentation 2015-02-06 00:00:35 +01:00
zelig 364b783281 changes that fix it all: 
- set proper public key serialisation length in pubLen = 64
- reset all sizes and offsets
- rename from DER to S (we are not using DER encoding)
- add remoteInitRandomPubKey as return value to respondToHandshake
- add ImportPublicKey with error return to read both EC golang.elliptic style 65 byte encoding and 64 byte one
- add ExportPublicKey falling back to go-ethereum/crypto.FromECDSAPub() chopping off the first byte
- add Import - Export tests
- all tests pass
 2015-02-06 00:00:35 +01:00
zelig 58fc2c679b important fix for peer pubkey. when taken from identity, chop first format byte! 2015-02-06 00:00:35 +01:00
zelig 923504ce3d add equality check for nonce and remote nonce 2015-02-06 00:00:35 +01:00
zelig 2e868566d7 add minor comments to the test 2015-02-06 00:00:35 +01:00
zelig e252c634cb first stab at integrating crypto in our p2p 
- abstract the entire handshake logic in cryptoId.Run() taking session-relevant parameters
- changes in peer to accomodate how the encryption layer would be switched on
- modify arguments of handshake components
- fixed test getting the wrong pubkey but it till crashes on DH in newSession()
 2015-02-06 00:00:35 +01:00
zelig 1803c65e40 integrate cryptoId into peer and connection lifecycle 2015-02-06 00:00:35 +01:00
zelig 489d956283 completed the test. FAIL now. it crashes at diffie-hellman. ECIES -> secp256k1-go panics 2015-02-06 00:00:35 +01:00
zelig 076c382a74 handshake test to crypto 2015-02-06 00:00:35 +01:00
zelig 3b6385b146 handshake test to crypto 2015-02-06 00:00:34 +01:00
zelig 714b955d6e fix crash 
- add session token check and fallback to shared secret in responder call too
- use explicit length for the types of new messages
- fix typo resp[resLen-1] = tokenFlag
 2015-02-06 00:00:34 +01:00
zelig b855f671a5 rewrite to comply with latest spec 
- correct sizes for the blocks : sec signature 65, ecies sklen 16, keylength 32
- added allocation to Xor (should be optimized later)
- no pubkey reader needed, just do with copy
- restructuring now into INITIATE, RESPOND, COMPLETE -> newSession initialises the encryption/authentication layer
- crypto identity can be part of client identity, some initialisation when server created
 2015-02-06 00:00:34 +01:00
zelig 4e52adb84a add crypto auth logic to p2p 2015-02-06 00:00:34 +01:00
zelig d227f6184e fix protocol to accomodate privkey 2015-02-06 00:00:34 +01:00
zelig 88167f39a6 add privkey to clientIdentity + tests 2015-02-06 00:00:34 +01:00
zelig c8a8aa0d43 initial hook for crypto handshake (void, off by default) 2015-02-06 00:00:34 +01:00
obscuren 67f9783e6a Moved `obscuren` secp256k1-go 2015-01-22 00:35:00 +01:00
obscuren 8d1637f567 Moved connection errors to DebugDetail level 2015-01-19 11:21:46 +01:00
Felix Lange 3caa4ad1ba p2p: improve test for peers message 
The test now checks that the number of of addresses is correct
and terminates cleanly.
 2015-01-06 12:23:38 +01:00
Felix Lange b0ff946b55 p2p: move peerList back into baseProtocol 
It had been moved to Peer, probably for debugging.
 2015-01-06 12:23:38 +01:00
Felix Lange eb0e7b1b81 eth, p2p: remove EncodeMsg from p2p.MsgWriter 
...and make it a top-level function instead.

The original idea behind having EncodeMsg in the interface was that
implementations might be able to encode RLP data to their underlying
writer directly instead of buffering the encoded data. The encoder
will buffer anyway, so that doesn't matter anymore.

Given the recent problems with EncodeMsg (copy-pasted implementation
bug) I'd rather implement once, correctly.
 2015-01-06 12:23:38 +01:00
obscuren 6abf8ef78f Merge 2015-01-05 17:10:42 +01:00
obscuren 09841b1c9b Cleaned up some of that util 2015-01-04 14:20:16 +01:00
Felix Lange aa3b91b802 p2p: fix call to Server.removePeer (might help with #209) 2014-12-15 22:36:59 +01:00
obscuren 56dac74f71 made mist in a compilable, workable state using the new refactored packages 2014-12-15 13:00:29 +01:00
Jeffrey Wilcke 15e46b97b4 Merge pull request #204 from fjl/fix-p2p-disconnect 
p2p: fix decoding of disconnect reason
 2014-12-15 10:22:35 +01:00
Felix Lange da900f9435 p2p: add test for base protocol disconnect 2014-12-15 00:28:20 +01:00
Felix Lange f0f6727778 p2p: use an error type for disconnect requests 
Test-tastic.
 2014-12-15 00:28:20 +01:00
Felix Lange 65e39bf20e p2p: add MsgPipe for protocol testing 2014-12-15 00:28:20 +01:00
Felix Lange e28c60caf9 p2p: improve and test eofSignal 2014-12-12 11:40:02 +01:00
Felix Lange 9423401d73 p2p: fix decoding of disconnect reason (fixes #200) 2014-12-12 11:40:02 +01:00
obscuren 1fb84d3c5f Fixed tests 2014-12-10 10:57:19 +01:00
Felix Lange cfd7e74c25 p2p: add test for NewPeer 2014-11-26 22:49:40 +01:00
Felix Lange 3a09459c4c p2p: make Disconnect not hang for peers created with NewPeer 2014-11-26 22:08:54 +01:00
Felix Lange 9b85002b70 p2p: remove Msg.Value and MsgLoop 2014-11-25 16:01:39 +01:00
Felix Lange 6049fcd52a p2p: use package rlp for baseProtocol 2014-11-25 12:25:31 +01:00
Felix Lange c1fca72552 p2p: use package rlp 2014-11-24 19:03:20 +01:00
Felix Lange 59b63caf5e p2p: API cleanup and PoC 7 compatibility 
Whoa, one more big commit. I didn't manage to untangle the
changes while working towards compatibility.
 2014-11-21 21:52:45 +01:00
Felix Lange e4a601c644 p2p: disable failing Server tests for now 2014-11-21 21:52:45 +01:00
Felix Lange 7149191dd9 p2p: fix issues found during review 2014-11-21 21:52:45 +01:00
Felix Lange f38052c499 p2p: rework protocol API 2014-11-21 21:52:45 +01:00
obscuren 429dd2a100 Implemented new miner w/ ui interface for merged mining. Closes #177 
* Miner has been rewritten
* Added new miner pane
* Added option for local txs
* Added option to read from MergeMining contract and list them for
  merged mining
 2014-11-07 12:18:48 +01:00
Felix Lange f3473312ba all: fix rename breakage 2014-10-31 18:52:58 +01:00
zelig 771fbcc02e initial commit of p2p package 2014-10-23 16:57:54 +01:00