client.go       | 2 ++
 dht/dht.go      | 1 +
 dht/getpeers.go | 5 +++++

diff --git a/client.go b/client.go
index 52618b5c715c4da8c900a127588779f4254bdd28..11be66800083fa2415fbba0422da3023ed9ce602 100644
--- a/client.go
+++ b/client.go
@@ -1729,6 +1729,8 @@ 	}
 	return
 }
 
+// Actively prunes unused connections. This is required to make space to dial
+// for replacements.
 func (cl *Client) connectionPruner(t *torrent) {
 	for {
 		time.Sleep(15 * time.Second)
diff --git a/dht/dht.go b/dht/dht.go
index 06cdfcdae47045a834e6e700d35c204f1afef458..350d6d1dae4a883b5b8fef004e55d0cb311074b5 100644
--- a/dht/dht.go
+++ b/dht/dht.go
@@ -856,6 +856,7 @@ 	}
 	t.onResponse = f
 }
 
+// Add response nodes to node table.
 func (s *Server) liftNodes(d Msg) {
 	if d["y"] != "r" {
 		return
diff --git a/dht/getpeers.go b/dht/getpeers.go
index c507809c207572cdbdf169bb3cd72064d503ac7e..e58a0358a5679b9bc6a99dcce7d8f4ffa71171fd 100644
--- a/dht/getpeers.go
+++ b/dht/getpeers.go
@@ -1,5 +1,7 @@
 package dht
 
+// get_peers and announce_peers.
+
 import (
 	"log"
 	"time"
@@ -121,6 +123,7 @@ 	}
 	go func() {
 		select {
 		case m := <-t.Response:
+			// Register suggested nodes closer to the target info-hash.
 			me.mu.Lock()
 			for _, n := range m.Nodes() {
 				me.responseNode(n)
@@ -160,6 +163,8 @@ 	Peers    []util.CompactPeer // Peers given in get_peers response.
 	NodeInfo                    // The node that gave the response.
 }
 
+// TODO: This was to be the shared publicly accessible part returned by DHT
+// functions that stream peers. Possibly not necessary anymore.
 type peerStream struct {
 	mu     sync.Mutex
 	Values chan peerStreamValue