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License: MIT
Signed-off-by: Jeromy <jeromyj@gmail.com>

License: MIT
Signed-off-by: rht <rhtbot@gmail.com>

- Modified Godeps/Godeps.json by hand
- [TEST] Updated welcome docs hash to sharness
- [TEST] Updated contact doc
- [TEST] disabled breaking test (t0080-repo refs local)

this time just move to goprocess

- updated go-ctxgroup and goprocess
ctxgroup: AddChildGroup was changed to AddChild. Used in two files:
- p2p/net/mock/mock_net.go
- routing/dht/dht.go

- updated context from hg repo to git
prev. commit in hg was ad01a6fcc8a19d3a4478c836895ffe883bd2ceab. (context: make parentCancelCtx iterative)
represents commit 84f8955a887232b6308d79c68b8db44f64df455c in git repo

- updated context to master (b6fdb7d8a4ccefede406f8fe0f017fb58265054c)

Aaron Jacobs (2):
net/context: Don't accept a context in the DoSomethingSlow example.
context: Be clear that users must cancel the result of WithCancel.

Andrew Gerrand (1):
go.net: use golang.org/x/... import paths

Bryan C. Mills (1):
net/context: Don't leak goroutines in Done example.

Damien Neil (1):
context: fix removal of cancelled timer contexts from parent

David Symonds (2):
context: Fix WithValue example code.
net: add import comments.

Sameer Ajmani (1):
context: fix TestAllocs to account for ints in interfaces

We are leaking peer queues:

http://gateway.ipfs.io/ipfs/QmQxVA48CzVwwNYExUiFe56VrUBn8u368ZfchnCLoc7fSC/moriarty

This addr manager should seriously help with the addrsplosion
problem.

the debug log is flooded with pages upon pages of...

we've gotta be more judicious with our use of console logs. i'm sure
there's interesting actionable information in here. let's use the
console logging more like a sniper rifle and less like birdshot.

feel free to revert if there are specific critical statements in this
changeset

03:05:24.096 DEBUG        dht: dht(<peer.ID
QmWGN3>).Query(QmXvrpUZXCYaCkf1jfaQTJASS91xd47Yih2rnVC5YbFAAK).Run(3)
queryPeer(<peer.ID QmSoLp>) QUERY worker for: <peer.ID QmSoLp> - not
found, and no closer peers. prefixlog.go:107
03:05:24.096 DEBUG        dht: dht(<peer.ID
QmWGN3>).Query(QmXvrpUZXCYaCkf1jfaQTJASS91xd47Yih2rnVC5YbFAAK).Run(3)
queryPeer(<peer.ID QmSoLp>) completed prefixlog.go:107
03:05:24.096 DEBUG        dht: dht(<peer.ID
QmWGN3>).Query(QmXvrpUZXCYaCkf1jfaQTJASS91xd47Yih2rnVC5YbFAAK).Run(3)
queryPeer(<peer.ID QmSoLp>) finished prefixlog.go:107
03:05:24.096 DEBUG        dht: dht(<peer.ID QmWGN3>)
FindProviders(QmXvrpUZXCYaCkf1jfaQTJASS91xd47Yih2rnVC5YbFAAK)
Query(<peer.ID QmSoLn>) 0 provider entries prefixlog.go:107
03:05:24.096 DEBUG        dht: dht(<peer.ID QmWGN3>)
FindProviders(QmXvrpUZXCYaCkf1jfaQTJASS91xd47Yih2rnVC5YbFAAK)
Query(<peer.ID QmSoLn>) 0 provider entries decoded prefixlog.go:107
03:05:24.096 DEBUG        dht: dht(<peer.ID QmWGN3>)
FindProviders(QmXvrpUZXCYaCkf1jfaQTJASS91xd47Yih2rnVC5YbFAAK)
Query(<peer.ID QmSoLn>) got closer peers: 0 [] prefixlog.go:107
03:05:24.097 DEBUG        dht: dht(<peer.ID QmWGN3>)
FindProviders(QmXvrpUZXCYaCkf1jfaQTJASS91xd47Yih2rnVC5YbFAAK)
Query(<peer.ID QmSoLn>) end prefixlog.go:107
03:05:24.097 DEBUG        dht: dht(<peer.ID
QmWGN3>).Query(QmXvrpUZXCYaCkf1jfaQTJASS91xd47Yih2rnVC5YbFAAK).Run(3)
queryPeer(<peer.ID QmSoLn>) query finished prefixlog.go:107
03:05:24.097 DEBUG        dht: dht(<peer.ID
QmWGN3>).Query(QmXvrpUZXCYaCkf1jfaQTJASS91xd47Yih2rnVC5YbFAAK).Run(3)
queryPeer(<peer.ID QmSoLn>) QUERY worker for: <peer.ID QmSoLn> - not
found, and no closer peers. prefixlog.go:107
03:05:24.097 DEBUG        dht: dht(<peer.ID
QmWGN3>).Query(QmXvrpUZXCYaCkf1jfaQTJASS91xd47Yih2rnVC5YbFAAK).Run(3)
queryPeer(<peer.ID QmSoLn>) completed prefixlog.go:107
03:05:24.097 DEBUG        dht: dht(<peer.ID
QmWGN3>).Query(QmXvrpUZXCYaCkf1jfaQTJASS91xd47Yih2rnVC5YbFAAK).Run(3)
queryPeer(<peer.ID QmSoLn>) finished prefixlog.go:107
03:05:24.097 DEBUG        dht: dht(<peer.ID
QmWGN3>).Query(QmXvrpUZXCYaCkf1jfaQTJASS91xd47Yih2rnVC5YbFAAK).Run(3)
all peers ended prefixlog.go:107
03:05:24.097 DEBUG        dht: dht(<peer.ID
QmWGN3>).Query(QmXvrpUZXCYaCkf1jfaQTJASS91xd47Yih2rnVC5YbFAAK).Run(3)
spawnWorkers end prefixlog.go:107
03:05:24.097 DEBUG        dht: dht(<peer.ID
QmWGN3>).Query(QmXvrpUZXCYaCkf1jfaQTJASS91xd47Yih2rnVC5YbFAAK).Run(3)
failure: %s routing: not found prefixlog.go:107
03:05:24.097 DEBUG        dht: dht(<peer.ID
QmWGN3>).Query(QmXvrpUZXCYaCkf1jfaQTJASS91xd47Yih2rnVC5YbFAAK).Run(3)
end prefixlog.go:107

When some queries finished, but we got no result, it should
be a simple NotFoundError. Only when every single query ended
in error do we externalize those to the client, in case
something major is going wrong

mitigated adding our own addresses where received
from peers

see #573

The net package is the next to move. It will be massaged
a bit still to fix the Network / "NetworkBackend" conflict.

I think it's time to move a lot of the peer-to-peer networking
but-not-ipfs-specific things into its own package: p2p.
This could in the future be split off into its own library.
The first thing to go is the peer.

refactor test peer creation to be deterministic and reliable

a bit of cleanup trying to figure out TestGetFailure

add test to verify deterministic peer creation

switch put RPC over to use getClosestPeers

rm 0xDEADC0DE

fix queries not searching peer if its not actually closer

Withe queries (particularly providers), it was possible to
exit the query runner's Run BEFORE all its children were done,
because the runner itself only listened to the context. This
introduced the possibility of a panic (you can go check it
out by running the TestProvidersMany test on dht_test in commits
before this one).  Thankfully, ctxgroup saved the day with
almost _zero_ changes to the sync flow, and now we have the
guarantee that the query runner will only exit if all its
children are done. ❤

Conflicts:
	routing/dht/query.go

this is a major refactor of the entire codebase
it changes the monolithic peer.Peer into using
a peer.ID and a peer.Peerstore.

Other changes:
- removed handshake3.
-	testutil vastly simplified peer
-	secio bugfix + debugging logs
-	testutil: RandKeyPair
-	backpressure bugfix: w.o.w.
-	peer: added hex enc/dec
-	peer: added a PeerInfo struct
  PeerInfo is a small struct used to pass around a peer with
 	a set of addresses and keys. This is not meant to be a
 	complete view of the system, but rather to model updates to
 	the peerstore. It is used by things like the routing system.
-	updated peer/queue + peerset
-	latency metrics
-	testutil: use crand for PeerID gen
 	RandPeerID generates random "valid" peer IDs. it does not
 	NEED to generate keys because it is as if we lost the key
 	right away. fine to read some randomness and hash it. to
 	generate proper keys and an ID, use:
 	  sk, pk, _ := testutil.RandKeyPair()
 	  id, _ := peer.IDFromPublicKey(pk)
 	Also added RandPeerIDFatal helper
- removed old spipe
- updated seccat
- core: cleanup initIdentity
- removed old getFromPeerList

dht doesn't need the whole network interface, only needs a Dialer.
(much reduced surface of possible errors)

The query-- once it's actually attempting to connect to a peer--
should be the one connecting.

![](http://m.memegen.com/77n7dk.jpg)

- use log.* instead of u.*
- use automatic type conversions to .String()
  (Peer.String() prints nicely, and avoids calling b58 encoding
  until needed)