121 Commits (637a75d61a13ee8a89a702a2eadb5ace3c79e7da)

Author	SHA1	Message	Date
Felix Lange	dd54fef898	p2p/discover: don't attempt to replace nodes that are being replaced ... PR #1621 changed Table locking so the mutex is not held while a contested node is being pinged. If multiple nodes ping the local node during this time window, multiple ping packets will be sent to the contested node. The changes in this commit prevent multiple packets by tracking whether the node is being replaced.	9 years ago
Felix Lange	7d5ff770e2	p2p/discover: continue reading after temporary errors ... Might solve #1579	9 years ago
Felix Lange	590c99a98f	p2p/discover: fix UDP reply packet timeout handling ... If the timeout fired (even just nanoseconds) before the deadline of the next pending reply, the timer was not rescheduled. The timer would've been rescheduled anyway once the next packet was sent, but there were cases where no next packet could ever be sent due to the locking issue fixed in the previous commit. As timing-related bugs go, this issue had been present for a long time and I could never reproduce it. The test added in this commit did reproduce the issue on about one out of 15 runs.	9 years ago
Felix Lange	01ed3fa1a9	p2p/discover: unlock the table during ping replacement ... Table.mutex was being held while waiting for a reply packet, which effectively made many parts of the whole stack block on that packet, including the net_peerCount RPC call.	9 years ago
Felix Lange	b23b4dbd79	p2p/discover: close Table during testing ... Not closing the table used to be fine, but now the table has a database.	9 years ago
Felix Lange	5c949d3b3b	fdtrack: temporary hack for tracking file descriptor usage ... Package fdtrack logs statistics about open file descriptors. This should help identify the source of #1549.	9 years ago
Felix Lange	bfbcfbe4a9	all: fix license headers one more time ... I forgot to update one instance of "go-ethereum" in commit 3f047be5a.	9 years ago
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".	9 years ago
Felix Lange	ea54283b30	all: update license information	10 years ago
Felix Lange	a8e4cb6dfe	p2p/discover: use separate rand.Source instances in tests ... rand.Source isn't safe for concurrent use.	10 years ago
Felix Lange	261a8077c4	p2p/discover: deflake TestUDP_successfulPing	10 years ago
Péter Szilágyi	612f01400f	p2p/discover: bond with seed nodes too (runs only if findnode failed)	10 years ago
Péter Szilágyi	3630432dfb	p2p/discovery: fix a cornercase loop if no seeds or bootnodes are known	10 years ago
Péter Szilágyi	f539ed1e66	p2p/discover: force refresh if the table is empty	10 years ago
Péter Szilágyi	5076170f34	p2p/discover: permit temporary bond failures for previously known nodes	10 years ago
Péter Szilágyi	6078aa08eb	p2p/discover: watch find failures, evacuate on too many, rebond if failed	10 years ago
Péter Szilágyi	64174f196f	p2p/discover: add support for counting findnode failures	10 years ago
Felix Lange	9f38ef5d97	p2p/discover: add ReadRandomNodes	10 years ago
Péter Szilágyi	cbd3ae6906	p2p/discover: fix #838, evacuate self entries from the node db	10 years ago
Péter Szilágyi	af24c271c7	p2p/discover: fix database presistency test folder	10 years ago
Felix Lange	d2f119cf9b	p2p/discover: limit open files for node database	10 years ago
Felix Lange	7fa2607bd1	p2p/discover: bump maxBondingPingPongs to 16 ... This should increase the speed a bit because all findnode results (up to 16) can be verified at the same time.	10 years ago
Felix Lange	251846d65a	p2p/discover: fix out-of-bounds slicing for chunked neighbors packets ... The code assumed that Table.closest always returns at least 13 nodes. This is not true for small tables (e.g. during bootstrap).	10 years ago
subtly	8eef2b765a	fix test.	10 years ago
subtly	a32693770c	Manual send of multiple neighbours packets. Test receiving multiple neighbours packets.	10 years ago
subtly	7473c93668	UDP Interop. Limit datagrams to 1280bytes. ... We don't have a UDP which specifies any messages that will be 4KB. Aside from being implemented for months and a necessity for encryption and piggy-backing packets, 1280bytes is ideal, and, means this TODO can be completed! Why 1280 bytes? * It's less than the default MTU for most WAN/LAN networks. That means fewer fragmented datagrams (esp on well-connected networks). * Fragmented datagrams and dropped packets suck and add latency while OS waits for a dropped fragment to never arrive (blocking readLoop()) * Most of our packets are < 1280 bytes. * 1280 bytes is minimum datagram size and MTU for IPv6 -- on IPv6, a datagram < 1280bytes will *never* be fragmented. UDP datagrams are dropped. A lot! And fragmented datagrams are worse. If a datagram has a 30% chance of being dropped, then a fragmented datagram has a 60% chance of being dropped. More importantly, we have signed packets and can't do anything with a packet unless we receive the entire datagram because the signature can't be verified. The same is true when we have encrypted packets. So the solution here to picking an ideal buffer size for receiving datagrams is a number under 1400bytes. And the lower-bound value for IPv6 of 1280 bytes make's it a non-decision. On IPv4 most ISPs and 3g/4g/let networks have an MTU just over 1400 -- and *never* over 1500. Never -- that means packets over 1500 (in reality: ~1450) bytes are fragmented. And probably dropped a lot. Just to prove the point, here are pings sending non-fragmented packets over wifi/ISP, and a second set of pings via cell-phone tethering. It's important to note that, if *any* router between my system and the EC2 node has a lower MTU, the message would not go through: On wifi w/normal ISP: localhost:Debug $ ping -D -s 1450 52.6.250.242 PING 52.6.250.242 (52.6.250.242): 1450 data bytes 1458 bytes from 52.6.250.242: icmp_seq=0 ttl=42 time=104.831 ms 1458 bytes from 52.6.250.242: icmp_seq=1 ttl=42 time=119.004 ms ^C --- 52.6.250.242 ping statistics --- 2 packets transmitted, 2 packets received, 0.0% packet loss round-trip min/avg/max/stddev = 104.831/111.918/119.004/7.087 ms localhost:Debug $ ping -D -s 1480 52.6.250.242 PING 52.6.250.242 (52.6.250.242): 1480 data bytes ping: sendto: Message too long ping: sendto: Message too long Request timeout for icmp_seq 0 ping: sendto: Message too long Request timeout for icmp_seq 1 Tethering to O2: localhost:Debug $ ping -D -s 1480 52.6.250.242 PING 52.6.250.242 (52.6.250.242): 1480 data bytes ping: sendto: Message too long ping: sendto: Message too long Request timeout for icmp_seq 0 ^C --- 52.6.250.242 ping statistics --- 2 packets transmitted, 0 packets received, 100.0% packet loss localhost:Debug $ ping -D -s 1450 52.6.250.242 PING 52.6.250.242 (52.6.250.242): 1450 data bytes 1458 bytes from 52.6.250.242: icmp_seq=0 ttl=42 time=107.844 ms 1458 bytes from 52.6.250.242: icmp_seq=1 ttl=42 time=105.127 ms 1458 bytes from 52.6.250.242: icmp_seq=2 ttl=42 time=120.483 ms 1458 bytes from 52.6.250.242: icmp_seq=3 ttl=42 time=102.136 ms	10 years ago
Bas van Kervel	95773b9673	removed redundant newlines in import block	10 years ago
Bas van Kervel	b79dd188d9	replaced several path.* with filepath.* which is platform independent	10 years ago
Felix Lange	bcfd788661	p2p/discover: bump packet timeouts to 500ms	10 years ago
Felix Lange	2adcc31bb4	p2p/discover: new distance metric based on sha3(id) ... The previous metric was pubkey1^pubkey2, as specified in the Kademlia paper. We missed that EC public keys are not uniformly distributed. Using the hash of the public keys addresses that. It also makes it a bit harder to generate node IDs that are close to a particular node.	10 years ago
Felix Lange	72ab6d3255	p2p/discover: track sha3(ID) in Node	10 years ago
Felix Lange	b34a8ef624	p2p, p2p/discover: protocol version 4	10 years ago
Felix Lange	fc747ef4a6	p2p/discover: new endpoint format ... This commit changes the discovery protocol to use the new "v4" endpoint format, which allows for separate UDP and TCP ports and makes it possible to discover the UDP address after NAT.	10 years ago
Péter Szilágyi	b569550a39	p2p/discover: fix api issues caused by leveldb update	10 years ago
Péter Szilágyi	4992765032	p2p/discover: fix goroutine leak due to blocking on sync.Once	10 years ago
Péter Szilágyi	437cf4b3ac	p2p/discover: add node expirer and related tests	10 years ago
Péter Szilágyi	a136e2bb22	p2p/discover: parametrize nodedb version, add persistency tests	10 years ago
Péter Szilágyi	75fd738dea	p2p/discover: drop a superfluous warning	10 years ago
Péter Szilágyi	706da56f75	p2p/discover: wrap the pinger to update the node db too	10 years ago
Péter Szilágyi	85b4b44235	p2p/discover: use iterator based seeding, drop old protocol test	10 years ago
Péter Szilágyi	8de8f61d36	p2p/discover: write the basic tests, catch RLP bug	10 years ago
Péter Szilágyi	0201c04b95	p2p/discovery: fix issues raised in the nodeDb PR	10 years ago
Péter Szilágyi	8646365b42	cmd/bootnode, eth, p2p, p2p/discover: use a fancier db design	10 years ago
Péter Szilágyi	6def110c37	cmd/bootnode, eth, p2p, p2p/discover: clean up the seeder and mesh into eth.	10 years ago
Péter Szilágyi	971702e7a1	p2p/discovery: fix broken tests due to API update	10 years ago
Péter Szilágyi	af923c965f	p2p/discovery: use the seed table for finding nodes, auto drop stale ones	10 years ago
Péter Szilágyi	5f735d6fce	cmd, eth, p2p, p2p/discover: init and clean up the seed cache	10 years ago
Felix Lange	936c8e19ff	p2p/discover: store nodes in leveldb	10 years ago
Felix Lange	eedbb1ee9a	p2p/discover: use rlp.DecodeBytes	10 years ago
Felix Lange	0217652d1b	p2p/discover: improve timer handling for reply timeouts	10 years ago