Make peerID a public type

Wanted it applied to Client Status output

client.go

@@ -43,7 +43,7 @@ type Client struct {
 	config Config
 
 	halfOpenLimit  int
-	peerID         peerID
+	peerID         PeerID
 	defaultStorage *storage.Client
 	onClose        []func()
 	tcpListener    net.Listener
@@ -90,7 +90,7 @@ func (cl *Client) SetIPBlockList(list iplist.Ranger) {
 	}
 }
 
-func (cl *Client) PeerID() [20]byte {
+func (cl *Client) PeerID() PeerID {
 	return cl.peerID
 }
 
@@ -794,7 +794,7 @@ func (cl *Client) connBTHandshake(c *connection, ih *metainfo.Hash) (ret metainf
 	}
 	ret = res.Hash
 	c.PeerExtensionBytes = res.peerExtensionBytes
-	c.PeerID = res.peerID
+	c.PeerID = res.PeerID
 	c.completedHandshake = time.Now()
 	return
 }

connection.go

@@ -73,7 +73,7 @@ type connection struct {
 	sentHaves        []bool
 
 	// Stuff controlled by the remote peer.
-	PeerID             peerID
+	PeerID             PeerID
 	PeerInterested     bool
 	PeerChoked         bool
 	PeerRequests       map[request]struct{}

handshake.go

@@ -60,7 +60,7 @@ func (pex peerExtensionBytes) GetBit(bit ExtensionBit) bool {
 
 type handshakeResult struct {
 	peerExtensionBytes
-	peerID
+	PeerID
 	metainfo.Hash
 }
 
@@ -116,7 +116,7 @@ func handshake(sock io.ReadWriter, ih *metainfo.Hash, peerID [20]byte, extension
 	}
 	missinggo.CopyExact(&res.peerExtensionBytes, b[20:28])
 	missinggo.CopyExact(&res.Hash, b[28:48])
-	missinggo.CopyExact(&res.peerID, b[48:68])
+	missinggo.CopyExact(&res.PeerID, b[48:68])
 	peerExtensions.Add(hex.EncodeToString(res.peerExtensionBytes[:]), 1)
 
 	// TODO: Maybe we can just drop peers here if we're not interested. This

peerid.go

@@ -4,9 +4,9 @@ import (
 	"encoding/hex"
 )
 
-type peerID [20]byte
+type PeerID [20]byte
 
-func (me peerID) String() string {
+func (me PeerID) String() string {
 	if me[0] == '-' && me[7] == '-' {
 		return string(me[:8]) + hex.EncodeToString(me[8:])
 	}

peerid_test.go

@@ -1,6 +1,7 @@
 package torrent
 
 import (
+	"fmt"
 	"testing"
 
 	"github.com/anacrolix/missinggo"
@@ -15,8 +16,9 @@ func TestPeerIdString(t *testing.T) {
 		{"\x1cNJ}\x9c\xc7\xc4o\x94<\x9b\x8c\xc2!I\x1c\a\xec\x98n", "1c4e4a7d9cc7c46f943c9b8cc221491c07ec986e"},
 		{"-FD51W\xe4-LaZMk0N8ZLA7", "-FD51W\xe4-4c615a4d6b304e385a4c4137"},
 	} {
-		var pi peerID
+		var pi PeerID
 		missinggo.CopyExact(&pi, _case.id)
 		assert.EqualValues(t, _case.s, pi.String())
+		assert.EqualValues(t, fmt.Sprintf("%q", _case.s), fmt.Sprintf("%q", pi))
 	}
 }

torrent_test.go

@@ -183,7 +183,7 @@ func TestTorrentMetainfoIncompleteMetadata(t *testing.T) {
 	require.NoError(t, err)
 	assert.True(t, ok)
 	assert.True(t, hr.peerExtensionBytes.GetBit(ExtensionBitExtended))
-	assert.EqualValues(t, cl.PeerID(), hr.peerID)
+	assert.EqualValues(t, cl.PeerID(), hr.PeerID)
 	assert.Equal(t, ih, hr.Hash)
 
 	assert.EqualValues(t, 0, tt.metadataSize())