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Fix dht queries

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Queries previously would sometimes only query three (alpha value) peers
before halting the operation. This PR changes the number of peers
grabbed from the routing table to start a query to K.

Dht nodes would also not respond with enough peers, as per the kademlia
paper, this has been changed to from 4 to 'K'.

The query mechanism itself also was flawed in that it would pull all the
peers it had yet to query out of the queue and 'start' the query for
them. The concurrency rate limiting was done inside the 'queryPeer'
method after the goroutine was spawned. This did not allow for peers
receiver from query replies to be properly queried in order of distance.

License: MIT
Signed-off-by: Jeromy <jeromyj@gmail.com>
This commit is contained in:
Jeromy
2015-09-21 09:55:25 -07:00
parent cfcc3d6a1b
commit 235a9ec5fc
5 changed files with 23 additions and 28 deletions
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2
routing/dht/handlers.go
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@ -14,7 +14,7 @@ import (
)
// The number of closer peers to send on requests.
var CloserPeerCount = 4
var CloserPeerCount = KValue
// dhthandler specifies the signature of functions that handle DHT messages.
type dhtHandler func(context.Context, peer.ID, *pb.Message) (*pb.Message, error)