From a7c8be4d69b644dce77b7caa06d40c511a09bbb5 Mon Sep 17 00:00:00 2001
From: Arceliar <Arceliar@users.noreply.github.com>
Date: Thu, 5 Jul 2018 23:07:01 -0500
Subject: [PATCH 01/17] base backpressure decisions on queue size in bytes,
 instead of packet counts

---
 src/yggdrasil/switch.go | 26 ++++++++++++++------------
 1 file changed, 14 insertions(+), 12 deletions(-)

diff --git a/src/yggdrasil/switch.go b/src/yggdrasil/switch.go
index 5b72620..e7b25a2 100644
--- a/src/yggdrasil/switch.go
+++ b/src/yggdrasil/switch.go
@@ -595,7 +595,7 @@ type switch_packetInfo struct {
 // Used to keep track of buffered packets
 type switch_buffer struct {
 	packets []switch_packetInfo // Currently buffered packets, which may be dropped if it grows too large
-	count   uint64              // Total queue size, including dropped packets
+	size    uint64              // Total queue size in bytes
 }
 
 func (b *switch_buffer) dropTimedOut() {
@@ -603,8 +603,10 @@ func (b *switch_buffer) dropTimedOut() {
 	const timeout = 25 * time.Millisecond
 	now := time.Now()
 	for len(b.packets) > 0 && now.Sub(b.packets[0].time) > timeout {
-		util_putBytes(b.packets[0].bytes)
-		b.packets = b.packets[1:]
+		var packet switch_packetInfo
+		packet, b.packets = b.packets[0], b.packets[1:]
+		b.size -= uint64(len(packet.bytes))
+		util_putBytes(packet.bytes)
 	}
 }
 
@@ -629,9 +631,9 @@ func (t *switchTable) handleIdle(port switchPort, buffs map[string]switch_buffer
 		buffs[streamID] = buf
 		packet := buf.packets[0]
 		coords := switch_getPacketCoords(packet.bytes)
-		if (bestSize == 0 || buf.count < bestSize) && t.portIsCloser(coords, port) {
+		if (bestSize == 0 || buf.size < bestSize) && t.portIsCloser(coords, port) {
 			best = streamID
-			bestSize = buf.count
+			bestSize = buf.size
 		}
 	}
 	if bestSize != 0 {
@@ -639,7 +641,7 @@ func (t *switchTable) handleIdle(port switchPort, buffs map[string]switch_buffer
 		var packet switch_packetInfo
 		// TODO decide if this should be LIFO or FIFO
 		packet, buf.packets = buf.packets[0], buf.packets[1:]
-		buf.count--
+		buf.size -= uint64(len(packet.bytes))
 		if len(buf.packets) == 0 {
 			delete(buffs, best)
 		} else {
@@ -658,16 +660,16 @@ func (t *switchTable) doWorker() {
 	idle := make(map[switchPort]struct{})   // this is to deduplicate things
 	for {
 		select {
-		case packet := <-t.packetIn:
+		case bytes := <-t.packetIn:
 			// Try to send it somewhere (or drop it if it's corrupt or at a dead end)
-			if !t.handleIn(packet, idle) {
+			if !t.handleIn(bytes, idle) {
 				// There's nobody free to take it right now, so queue it for later
-				streamID := switch_getPacketStreamID(packet)
+				packet := switch_packetInfo{bytes, time.Now()}
+				streamID := switch_getPacketStreamID(packet.bytes)
 				buf := buffs[streamID]
 				buf.dropTimedOut()
-				pinfo := switch_packetInfo{packet, time.Now()}
-				buf.packets = append(buf.packets, pinfo)
-				buf.count++
+				buf.packets = append(buf.packets, packet)
+				buf.size += uint64(len(packet.bytes))
 				buffs[streamID] = buf
 			}
 		case port := <-t.idleIn:

From 7da4967f5e67b3110be27dc8f49f9c9c7e915a75 Mon Sep 17 00:00:00 2001
From: Arceliar <Arceliar@users.noreply.github.com>
Date: Thu, 5 Jul 2018 23:39:41 -0500
Subject: [PATCH 02/17] Limit maximum queue size to 4 MB

---
 src/yggdrasil/switch.go | 71 ++++++++++++++++++++++++++---------------
 1 file changed, 45 insertions(+), 26 deletions(-)

diff --git a/src/yggdrasil/switch.go b/src/yggdrasil/switch.go
index e7b25a2..20b5783 100644
--- a/src/yggdrasil/switch.go
+++ b/src/yggdrasil/switch.go
@@ -598,37 +598,53 @@ type switch_buffer struct {
 	size    uint64              // Total queue size in bytes
 }
 
-func (b *switch_buffer) dropTimedOut() {
-	// TODO figure out what timeout makes sense
-	const timeout = 25 * time.Millisecond
-	now := time.Now()
-	for len(b.packets) > 0 && now.Sub(b.packets[0].time) > timeout {
-		var packet switch_packetInfo
-		packet, b.packets = b.packets[0], b.packets[1:]
-		b.size -= uint64(len(packet.bytes))
-		util_putBytes(packet.bytes)
+type switch_buffers struct {
+	bufs map[string]switch_buffer // Buffers indexed by StreamID
+	size uint64                   // Total size of all buffers, in bytes
+}
+
+func (b *switch_buffers) cleanup(t *switchTable) {
+	remove := func(streamID string) {
+		// Helper function to drop a queue
+		buf := b.bufs[streamID]
+		for _, packet := range buf.packets {
+			util_putBytes(packet.bytes)
+		}
+		b.size -= buf.size
+		delete(b.bufs, streamID)
+	}
+	for streamID, buf := range b.bufs {
+		// Remove queues for which we have no next hop
+		packet := buf.packets[0]
+		coords := switch_getPacketCoords(packet.bytes)
+		if t.selfIsClosest(coords) {
+			remove(streamID)
+		}
+	}
+	const maxSize = 4 * 1048576 // Maximum 4 MB
+	for b.size > maxSize {
+		// Drop a random queue
+		for streamID := range b.bufs {
+			remove(streamID)
+			break
+		}
 	}
 }
 
 // Handles incoming idle notifications
 // Loops over packets and sends the newest one that's OK for this peer to send
 // Returns true if the peer is no longer idle, false if it should be added to the idle list
-func (t *switchTable) handleIdle(port switchPort, buffs map[string]switch_buffer) bool {
+func (t *switchTable) handleIdle(port switchPort, bufs *switch_buffers) bool {
 	to := t.core.peers.getPorts()[port]
 	if to == nil {
 		return true
 	}
 	var best string
 	var bestSize uint64
-	for streamID, buf := range buffs {
+	bufs.cleanup(t)
+	for streamID, buf := range bufs.bufs {
 		// Filter over the streams that this node is closer to
 		// Keep the one with the smallest queue
-		buf.dropTimedOut()
-		if len(buf.packets) == 0 {
-			delete(buffs, streamID)
-			continue
-		}
-		buffs[streamID] = buf
 		packet := buf.packets[0]
 		coords := switch_getPacketCoords(packet.bytes)
 		if (bestSize == 0 || buf.size < bestSize) && t.portIsCloser(coords, port) {
@@ -637,15 +653,16 @@ func (t *switchTable) handleIdle(port switchPort, buffs map[string]switch_buffer
 		}
 	}
 	if bestSize != 0 {
-		buf := buffs[best]
+		buf := bufs.bufs[best]
 		var packet switch_packetInfo
 		// TODO decide if this should be LIFO or FIFO
 		packet, buf.packets = buf.packets[0], buf.packets[1:]
 		buf.size -= uint64(len(packet.bytes))
+		bufs.size -= uint64(len(packet.bytes))
 		if len(buf.packets) == 0 {
-			delete(buffs, best)
+			delete(bufs.bufs, best)
 		} else {
-			buffs[best] = buf
+			bufs.bufs[best] = buf
 		}
 		to.sendPacket(packet.bytes)
 		return true
@@ -656,8 +673,9 @@ func (t *switchTable) handleIdle(port switchPort, buffs map[string]switch_buffer
 
 // The switch worker does routing lookups and sends packets to where they need to be
 func (t *switchTable) doWorker() {
-	buffs := make(map[string]switch_buffer) // Packets per PacketStreamID (string)
-	idle := make(map[switchPort]struct{})   // this is to deduplicate things
+	var bufs switch_buffers
+	bufs.bufs = make(map[string]switch_buffer) // Packets per PacketStreamID (string)
+	idle := make(map[switchPort]struct{})      // this is to deduplicate things
 	for {
 		select {
 		case bytes := <-t.packetIn:
@@ -666,15 +684,16 @@ func (t *switchTable) doWorker() {
 				// There's nobody free to take it right now, so queue it for later
 				packet := switch_packetInfo{bytes, time.Now()}
 				streamID := switch_getPacketStreamID(packet.bytes)
-				buf := buffs[streamID]
-				buf.dropTimedOut()
+				buf := bufs.bufs[streamID]
 				buf.packets = append(buf.packets, packet)
 				buf.size += uint64(len(packet.bytes))
-				buffs[streamID] = buf
+				bufs.size += uint64(len(packet.bytes))
+				bufs.bufs[streamID] = buf
+				bufs.cleanup(t)
 			}
 		case port := <-t.idleIn:
 			// Try to find something to send to this peer
-			if !t.handleIdle(port, buffs) {
+			if !t.handleIdle(port, &bufs) {
 				// Didn't find anything ready to send yet, so stay idle
 				idle[port] = struct{}{}
 			}

From 1a65c065d07f8034c9162740cc81ad9d4bbe9420 Mon Sep 17 00:00:00 2001
From: Arceliar <Arceliar@users.noreply.github.com>
Date: Thu, 5 Jul 2018 23:56:37 -0500
Subject: [PATCH 03/17] prioritize sending from small queues that have been
 blocked for a long time

---
 src/yggdrasil/switch.go | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/src/yggdrasil/switch.go b/src/yggdrasil/switch.go
index 20b5783..1a0e781 100644
--- a/src/yggdrasil/switch.go
+++ b/src/yggdrasil/switch.go
@@ -640,19 +640,21 @@ func (t *switchTable) handleIdle(port switchPort, bufs *switch_buffers) bool {
 		return true
 	}
 	var best string
-	var bestSize uint64
+	var bestPriority float64
 	bufs.cleanup(t)
+	now := time.Now()
 	for streamID, buf := range bufs.bufs {
 		// Filter over the streams that this node is closer to
 		// Keep the one with the smallest queue
 		packet := buf.packets[0]
 		coords := switch_getPacketCoords(packet.bytes)
-		if (bestSize == 0 || buf.size < bestSize) && t.portIsCloser(coords, port) {
+		priority := float64(now.Sub(packet.time)) / float64(buf.size)
+		if priority > bestPriority && t.portIsCloser(coords, port) {
 			best = streamID
-			bestSize = buf.size
+			bestPriority = priority
 		}
 	}
-	if bestSize != 0 {
+	if bestPriority != 0 {
 		buf := bufs.bufs[best]
 		var packet switch_packetInfo
 		// TODO decide if this should be LIFO or FIFO

From e6a47f705da746372e53620132b37e0f43101525 Mon Sep 17 00:00:00 2001
From: Arceliar <Arceliar@users.noreply.github.com>
Date: Fri, 6 Jul 2018 00:11:36 -0500
Subject: [PATCH 04/17] when dropping a queue, select one at random based on
 queue size in bytes

---
 src/yggdrasil/switch.go | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/yggdrasil/switch.go b/src/yggdrasil/switch.go
index 1a0e781..f47526f 100644
--- a/src/yggdrasil/switch.go
+++ b/src/yggdrasil/switch.go
@@ -12,6 +12,7 @@ package yggdrasil
 //  A little annoying to do with constant changes from backpressure
 
 import (
+	"math/rand"
 	"sync"
 	"sync/atomic"
 	"time"
@@ -624,7 +625,13 @@ func (b *switch_buffers) cleanup(t *switchTable) {
 	const maxSize = 4 * 1048576 // Maximum 4 MB
 	for b.size > maxSize {
 		// Drop a random queue
-		for streamID := range b.bufs {
+		target := rand.Uint64() % b.size
+		var size uint64 // running total
+		for streamID, buf := range b.bufs {
+			size += buf.size
+			if size < target {
+				continue
+			}
 			remove(streamID)
 			break
 		}

From ad5dc9ea87afbde2aee36c9a7f377460105a8589 Mon Sep 17 00:00:00 2001
From: Arceliar <Arceliar@users.noreply.github.com>
Date: Fri, 6 Jul 2018 00:55:00 -0500
Subject: [PATCH 05/17] Drop 1 packet instead of a whole queue when overflowing

---
 src/yggdrasil/switch.go | 23 ++++++++++++-----------
 1 file changed, 12 insertions(+), 11 deletions(-)

diff --git a/src/yggdrasil/switch.go b/src/yggdrasil/switch.go
index f47526f..ea52fdc 100644
--- a/src/yggdrasil/switch.go
+++ b/src/yggdrasil/switch.go
@@ -605,21 +605,16 @@ type switch_buffers struct {
 }
 
 func (b *switch_buffers) cleanup(t *switchTable) {
-	remove := func(streamID string) {
-		// Helper function to drop a queue
-		buf := b.bufs[streamID]
-		for _, packet := range buf.packets {
-			util_putBytes(packet.bytes)
-		}
-		b.size -= buf.size
-		delete(b.bufs, streamID)
-	}
 	for streamID, buf := range b.bufs {
 		// Remove queues for which we have no next hop
 		packet := buf.packets[0]
 		coords := switch_getPacketCoords(packet.bytes)
 		if t.selfIsClosest(coords) {
-			remove(streamID)
+			for _, packet := range buf.packets {
+				util_putBytes(packet.bytes)
+			}
+			b.size -= buf.size
+			delete(b.bufs, streamID)
 		}
 	}
 	const maxSize = 4 * 1048576 // Maximum 4 MB
@@ -632,7 +627,13 @@ func (b *switch_buffers) cleanup(t *switchTable) {
 			if size < target {
 				continue
 			}
-			remove(streamID)
+			var packet switch_packetInfo
+			packet, buf.packets = buf.packets[0], buf.packets[1:]
+			buf.size -= uint64(len(packet.bytes))
+			b.size -= uint64(len(packet.bytes))
+			if len(buf.packets) == 0 {
+				delete(b.bufs, streamID)
+			}
 			break
 		}
 	}

From ba4047b51a7db87a0e13df7221f39a6fc66e048b Mon Sep 17 00:00:00 2001
From: Arceliar <Arceliar@users.noreply.github.com>
Date: Fri, 6 Jul 2018 17:27:04 -0500
Subject: [PATCH 06/17] correctly update buffer sizs when buffers overflow, and
 returned freed packets to the byte store

---
 src/yggdrasil/switch.go | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/yggdrasil/switch.go b/src/yggdrasil/switch.go
index ea52fdc..6fe50bf 100644
--- a/src/yggdrasil/switch.go
+++ b/src/yggdrasil/switch.go
@@ -631,8 +631,12 @@ func (b *switch_buffers) cleanup(t *switchTable) {
 			packet, buf.packets = buf.packets[0], buf.packets[1:]
 			buf.size -= uint64(len(packet.bytes))
 			b.size -= uint64(len(packet.bytes))
+			util_putBytes(packet.bytes)
 			if len(buf.packets) == 0 {
 				delete(b.bufs, streamID)
+			} else {
+				// Need to update the map, since buf was retrieved by value
+				b.bufs[streamID] = buf
 			}
 			break
 		}
@@ -672,6 +676,7 @@ func (t *switchTable) handleIdle(port switchPort, bufs *switch_buffers) bool {
 		if len(buf.packets) == 0 {
 			delete(bufs.bufs, best)
 		} else {
+			// Need to update the map, since buf was retrieved by value
 			bufs.bufs[best] = buf
 		}
 		to.sendPacket(packet.bytes)

From cd6030ec8f9977fb5e151d719ddd8986f8b60584 Mon Sep 17 00:00:00 2001
From: Neil Alexander <neilalexander@users.noreply.github.com>
Date: Sat, 7 Jul 2018 11:22:49 +0100
Subject: [PATCH 07/17] Add support for UNIX domain admin sockets and
 specifying URIs in AdminListen

---
 src/yggdrasil/admin.go | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/src/yggdrasil/admin.go b/src/yggdrasil/admin.go
index bd5eb0c..e02bf9e 100644
--- a/src/yggdrasil/admin.go
+++ b/src/yggdrasil/admin.go
@@ -229,13 +229,26 @@ func (a *admin) start() error {
 
 // listen is run by start and manages API connections.
 func (a *admin) listen() {
-	l, err := net.Listen("tcp", a.listenaddr)
+	var l net.Listener
+	u, err := url.Parse(a.listenaddr)
+	if err == nil {
+		switch strings.ToLower(u.Scheme) {
+		case "unix":
+			l, err = net.Listen("unix", a.listenaddr[7:])
+		case "tcp":
+			l, err = net.Listen("tcp", u.Host)
+		default:
+			err = errors.New("protocol not supported")
+		}
+	} else {
+		l, err = net.Listen("tcp", a.listenaddr)
+	}
 	if err != nil {
 		a.core.log.Printf("Admin socket failed to listen: %v", err)
 		os.Exit(1)
 	}
+	a.core.log.Printf("%s admin socket listening on %s", strings.ToUpper(l.Addr().Network()), l.Addr().String())
 	defer l.Close()
-	a.core.log.Printf("Admin socket listening on %s", l.Addr().String())
 	for {
 		conn, err := l.Accept()
 		if err == nil {

From 047b7d95a15db5726035617b2bdf2789635d09da Mon Sep 17 00:00:00 2001
From: Neil Alexander <neilalexander@users.noreply.github.com>
Date: Sat, 7 Jul 2018 11:25:01 +0100
Subject: [PATCH 08/17] Add support for UNIX domain admin sockets to
 yggdrasilctl

---
 yggdrasilctl.go | 24 ++++++++++++++++++++----
 1 file changed, 20 insertions(+), 4 deletions(-)

diff --git a/yggdrasilctl.go b/yggdrasilctl.go
index 5cea774..25998e3 100644
--- a/yggdrasilctl.go
+++ b/yggdrasilctl.go
@@ -1,9 +1,11 @@
 package main
 
+import "errors"
 import "flag"
 import "fmt"
 import "strings"
 import "net"
+import "net/url"
 import "sort"
 import "encoding/json"
 import "strconv"
@@ -12,20 +14,34 @@ import "os"
 type admin_info map[string]interface{}
 
 func main() {
-	server := flag.String("endpoint", "localhost:9001", "Admin socket endpoint")
+	server := flag.String("endpoint", "tcp://localhost:9001", "Admin socket endpoint")
 	injson := flag.Bool("json", false, "Output in JSON format")
 	flag.Parse()
 	args := flag.Args()
 
 	if len(args) == 0 {
-		fmt.Println("usage:", os.Args[0], "[-endpoint=localhost:9001] [-json] command [key=value] [...]")
+		fmt.Println("usage:", os.Args[0], "[-endpoint=proto://server] [-json] command [key=value] [...]")
 		fmt.Println("example:", os.Args[0], "getPeers")
 		fmt.Println("example:", os.Args[0], "setTunTap name=auto mtu=1500 tap_mode=false")
-		fmt.Println("example:", os.Args[0], "-endpoint=localhost:9001 getDHT")
+		fmt.Println("example:", os.Args[0], "-endpoint=tcp://localhost:9001 getDHT")
+		fmt.Println("example:", os.Args[0], "-endpoint=unix:///var/run/ygg.sock getDHT")
 		return
 	}
 
-	conn, err := net.Dial("tcp", *server)
+	var conn net.Conn
+	u, err := url.Parse(*server)
+	if err == nil {
+		switch strings.ToLower(u.Scheme) {
+		case "unix":
+			conn, err = net.Dial("unix", (*server)[7:])
+		case "tcp":
+			conn, err = net.Dial("tcp", u.Host)
+		default:
+			err = errors.New("protocol not supported")
+		}
+	} else {
+		conn, err = net.Dial("tcp", *server)
+	}
 	if err != nil {
 		panic(err)
 	}

From 171e1e7823a502db250e5e878f2251783fa8b15f Mon Sep 17 00:00:00 2001
From: Neil Alexander <neilalexander@users.noreply.github.com>
Date: Sat, 7 Jul 2018 11:28:50 +0100
Subject: [PATCH 09/17] Update default AdminListen to URI format

---
 yggdrasil.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/yggdrasil.go b/yggdrasil.go
index 20b4aa0..e4c63d7 100644
--- a/yggdrasil.go
+++ b/yggdrasil.go
@@ -53,7 +53,7 @@ func generateConfig(isAutoconf bool) *nodeConfig {
 		r1 := rand.New(rand.NewSource(time.Now().UnixNano()))
 		cfg.Listen = fmt.Sprintf("[::]:%d", r1.Intn(65534-32768)+32768)
 	}
-	cfg.AdminListen = "localhost:9001"
+	cfg.AdminListen = "tcp://localhost:9001"
 	cfg.EncryptionPublicKey = hex.EncodeToString(bpub[:])
 	cfg.EncryptionPrivateKey = hex.EncodeToString(bpriv[:])
 	cfg.SigningPublicKey = hex.EncodeToString(spub[:])

From 1692bd98fd78a452a37e6c12d71f4da37c536ef2 Mon Sep 17 00:00:00 2001
From: Neil Alexander <neilalexander@users.noreply.github.com>
Date: Sat, 7 Jul 2018 12:08:52 +0100
Subject: [PATCH 10/17] Centralise platform defaults into the 'defaults'
 package

---
 src/yggdrasil/admin.go                     |  8 +++++---
 src/yggdrasil/core.go                      | 14 ++++++++++----
 src/yggdrasil/defaults/defaults.go         | 15 +++++++++++++++
 src/yggdrasil/defaults/defaults_darwin.go  | 18 ++++++++++++++++++
 src/yggdrasil/defaults/defaults_freebsd.go | 18 ++++++++++++++++++
 src/yggdrasil/defaults/defaults_linux.go   | 18 ++++++++++++++++++
 src/yggdrasil/defaults/defaults_netbsd.go  | 18 ++++++++++++++++++
 src/yggdrasil/defaults/defaults_openbsd.go | 18 ++++++++++++++++++
 src/yggdrasil/defaults/defaults_other.go   | 18 ++++++++++++++++++
 src/yggdrasil/defaults/defaults_windows.go | 18 ++++++++++++++++++
 src/yggdrasil/tun.go                       | 18 +++++-------------
 src/yggdrasil/tun_darwin.go                | 11 -----------
 src/yggdrasil/tun_freebsd.go               | 12 ------------
 src/yggdrasil/tun_linux.go                 | 11 -----------
 src/yggdrasil/tun_netbsd.go                | 12 ------------
 src/yggdrasil/tun_openbsd.go               | 12 ------------
 src/yggdrasil/tun_other.go                 | 11 -----------
 src/yggdrasil/tun_windows.go               | 11 -----------
 yggdrasil.go                               |  9 +++++----
 yggdrasilctl.go                            |  4 +++-
 20 files changed, 169 insertions(+), 105 deletions(-)
 create mode 100644 src/yggdrasil/defaults/defaults.go
 create mode 100644 src/yggdrasil/defaults/defaults_darwin.go
 create mode 100644 src/yggdrasil/defaults/defaults_freebsd.go
 create mode 100644 src/yggdrasil/defaults/defaults_linux.go
 create mode 100644 src/yggdrasil/defaults/defaults_netbsd.go
 create mode 100644 src/yggdrasil/defaults/defaults_openbsd.go
 create mode 100644 src/yggdrasil/defaults/defaults_other.go
 create mode 100644 src/yggdrasil/defaults/defaults_windows.go
 delete mode 100644 src/yggdrasil/tun_freebsd.go
 delete mode 100644 src/yggdrasil/tun_netbsd.go
 delete mode 100644 src/yggdrasil/tun_openbsd.go

diff --git a/src/yggdrasil/admin.go b/src/yggdrasil/admin.go
index bd5eb0c..f486468 100644
--- a/src/yggdrasil/admin.go
+++ b/src/yggdrasil/admin.go
@@ -13,6 +13,8 @@ import (
 	"strings"
 	"sync/atomic"
 	"time"
+
+	"yggdrasil/defaults"
 )
 
 // TODO: Add authentication
@@ -155,15 +157,15 @@ func (a *admin) init(c *Core, listenaddr string) {
 	})
 	a.addHandler("setTunTap", []string{"name", "[tap_mode]", "[mtu]"}, func(in admin_info) (admin_info, error) {
 		// Set sane defaults
-		iftapmode := getDefaults().defaultIfTAPMode
-		ifmtu := getDefaults().defaultIfMTU
+		iftapmode := defaults.GetDefaults().DefaultIfTAPMode
+		ifmtu := defaults.GetDefaults().DefaultIfMTU
 		// Has TAP mode been specified?
 		if tap, ok := in["tap_mode"]; ok {
 			iftapmode = tap.(bool)
 		}
 		// Check we have enough params for MTU
 		if mtu, ok := in["mtu"]; ok {
-			if mtu.(float64) >= 1280 && ifmtu <= getDefaults().maximumIfMTU {
+			if mtu.(float64) >= 1280 && ifmtu <= defaults.GetDefaults().MaximumIfMTU {
 				ifmtu = int(in["mtu"].(float64))
 			}
 		}
diff --git a/src/yggdrasil/core.go b/src/yggdrasil/core.go
index 6d130d8..28ca8f3 100644
--- a/src/yggdrasil/core.go
+++ b/src/yggdrasil/core.go
@@ -9,6 +9,7 @@ import (
 	"regexp"
 
 	"yggdrasil/config"
+	"yggdrasil/defaults"
 )
 
 // The Core object represents the Yggdrasil node. You should create a Core
@@ -197,26 +198,31 @@ func (c *Core) AddAllowedEncryptionPublicKey(boxStr string) error {
 	return c.admin.addAllowedEncryptionPublicKey(boxStr)
 }
 
+// Gets the default admin listen address for your platform.
+func (c *Core) GetAdminDefaultListen() string {
+	return defaults.GetDefaults().DefaultAdminListen
+}
+
 // Gets the default TUN/TAP interface name for your platform.
 func (c *Core) GetTUNDefaultIfName() string {
-	return getDefaults().defaultIfName
+	return defaults.GetDefaults().DefaultIfName
 }
 
 // Gets the default TUN/TAP interface MTU for your platform. This can be as high
 // as 65535, depending on platform, but is never lower than 1280.
 func (c *Core) GetTUNDefaultIfMTU() int {
-	return getDefaults().defaultIfMTU
+	return defaults.GetDefaults().DefaultIfMTU
 }
 
 // Gets the maximum supported TUN/TAP interface MTU for your platform. This
 // can be as high as 65535, depending on platform, but is never lower than 1280.
 func (c *Core) GetTUNMaximumIfMTU() int {
-	return getDefaults().maximumIfMTU
+	return defaults.GetDefaults().MaximumIfMTU
 }
 
 // Gets the default TUN/TAP interface mode for your platform.
 func (c *Core) GetTUNDefaultIfTAPMode() bool {
-	return getDefaults().defaultIfTAPMode
+	return defaults.GetDefaults().DefaultIfTAPMode
 }
 
 // Gets the current TUN/TAP interface name.
diff --git a/src/yggdrasil/defaults/defaults.go b/src/yggdrasil/defaults/defaults.go
new file mode 100644
index 0000000..6145539
--- /dev/null
+++ b/src/yggdrasil/defaults/defaults.go
@@ -0,0 +1,15 @@
+package defaults
+
+// Defines which parameters are expected by default for configuration on a
+// specific platform. These values are populated in the relevant defaults_*.go
+// for the platform being targeted. They must be set.
+type platformDefaultParameters struct {
+	// Admin socket
+	DefaultAdminListen	string
+
+	// TUN/TAP
+	MaximumIfMTU     int
+	DefaultIfMTU     int
+	DefaultIfName    string
+	DefaultIfTAPMode bool
+}
diff --git a/src/yggdrasil/defaults/defaults_darwin.go b/src/yggdrasil/defaults/defaults_darwin.go
new file mode 100644
index 0000000..b82660f
--- /dev/null
+++ b/src/yggdrasil/defaults/defaults_darwin.go
@@ -0,0 +1,18 @@
+// +build darwin
+
+package defaults
+
+// Sane defaults for the macOS/Darwin platform. The "default" options may be
+// may be replaced by the running configuration.
+func GetDefaults() platformDefaultParameters {
+	return platformDefaultParameters{
+    // Admin
+		DefaultAdminListen: "unix:///var/run/yggdrasil.sock",
+
+    // TUN/TAP
+    MaximumIfMTU:     65535,
+    DefaultIfMTU:     65535,
+    DefaultIfName:    "auto",
+    DefaultIfTAPMode: false,
+	}
+}
diff --git a/src/yggdrasil/defaults/defaults_freebsd.go b/src/yggdrasil/defaults/defaults_freebsd.go
new file mode 100644
index 0000000..4ba7fac
--- /dev/null
+++ b/src/yggdrasil/defaults/defaults_freebsd.go
@@ -0,0 +1,18 @@
+// +build freebsd
+
+package defaults
+
+// Sane defaults for the BSD platforms. The "default" options may be
+// may be replaced by the running configuration.
+func GetDefaults() platformDefaultParameters {
+	return platformDefaultParameters{
+		// Admin
+		DefaultAdminListen: "unix:///var/run/yggdrasil.sock",
+
+		// TUN/TAP
+		MaximumIfMTU:     32767,
+		DefaultIfMTU:     32767,
+		DefaultIfName:    "/dev/tap0",
+		DefaultIfTAPMode: true,
+	}
+}
diff --git a/src/yggdrasil/defaults/defaults_linux.go b/src/yggdrasil/defaults/defaults_linux.go
new file mode 100644
index 0000000..4572f3c
--- /dev/null
+++ b/src/yggdrasil/defaults/defaults_linux.go
@@ -0,0 +1,18 @@
+// +build linux
+
+package defaults
+
+// Sane defaults for the Linux platform. The "default" options may be
+// may be replaced by the running configuration.
+func GetDefaults() platformDefaultParameters {
+	return platformDefaultParameters{
+    // Admin
+		DefaultAdminListen: "unix:///var/run/yggdrasil.sock",
+
+    // TUN/TAP
+    MaximumIfMTU:     65535,
+    DefaultIfMTU:     65535,
+    DefaultIfName:    "auto",
+    DefaultIfTAPMode: false,
+	}
+}
diff --git a/src/yggdrasil/defaults/defaults_netbsd.go b/src/yggdrasil/defaults/defaults_netbsd.go
new file mode 100644
index 0000000..d9f3b4d
--- /dev/null
+++ b/src/yggdrasil/defaults/defaults_netbsd.go
@@ -0,0 +1,18 @@
+// +build freebsd
+
+package defaults
+
+// Sane defaults for the BSD platforms. The "default" options may be
+// may be replaced by the running configuration.
+func GetDefaults() platformDefaultParameters {
+	return platformDefaultParameters{
+		// Admin
+		DefaultAdminListen: "unix:///var/run/yggdrasil.sock",
+
+		// TUN/TAP
+		MaximumIfMTU:     9000,
+		DefaultIfMTU:     9000,
+		DefaultIfName:    "/dev/tap0",
+		DefaultIfTAPMode: true,
+	}
+}
diff --git a/src/yggdrasil/defaults/defaults_openbsd.go b/src/yggdrasil/defaults/defaults_openbsd.go
new file mode 100644
index 0000000..1b3e0c0
--- /dev/null
+++ b/src/yggdrasil/defaults/defaults_openbsd.go
@@ -0,0 +1,18 @@
+// +build freebsd
+
+package defaults
+
+// Sane defaults for the BSD platforms. The "default" options may be
+// may be replaced by the running configuration.
+func GetDefaults() platformDefaultParameters {
+	return platformDefaultParameters{
+		// Admin
+		DefaultAdminListen: "unix:///var/run/yggdrasil.sock",
+
+		// TUN/TAP
+		MaximumIfMTU:     16384,
+		DefaultIfMTU:     16384,
+		DefaultIfName:    "/dev/tap0",
+		DefaultIfTAPMode: true,
+	}
+}
diff --git a/src/yggdrasil/defaults/defaults_other.go b/src/yggdrasil/defaults/defaults_other.go
new file mode 100644
index 0000000..29e71e8
--- /dev/null
+++ b/src/yggdrasil/defaults/defaults_other.go
@@ -0,0 +1,18 @@
+// +build !linux,!darwin,!windows,!openbsd,!freebsd,!netbsd
+
+package defaults
+
+// Sane defaults for the other platforms. The "default" options may be
+// may be replaced by the running configuration.
+func GetDefaults() platformDefaultParameters {
+	return platformDefaultParameters{
+    // Admin
+		DefaultAdminListen: "tcp://localhost:9001",
+
+    // TUN/TAP
+    MaximumIfMTU:     65535,
+    DefaultIfMTU:     65535,
+    DefaultIfName:    "none",
+    DefaultIfTAPMode: false,
+	}
+}
diff --git a/src/yggdrasil/defaults/defaults_windows.go b/src/yggdrasil/defaults/defaults_windows.go
new file mode 100644
index 0000000..91e9e0e
--- /dev/null
+++ b/src/yggdrasil/defaults/defaults_windows.go
@@ -0,0 +1,18 @@
+// +build windows
+
+package defaults
+
+// Sane defaults for the Windows platform. The "default" options may be
+// may be replaced by the running configuration.
+func GetDefaults() platformDefaultParameters {
+	return platformDefaultParameters{
+    // Admin
+		DefaultAdminListen: "tcp://localhost:9001",
+
+    // TUN/TAP
+    MaximumIfMTU:     65535,
+    DefaultIfMTU:     65535,
+    DefaultIfName:    "auto",
+    DefaultIfTAPMode: true,
+	}
+}
diff --git a/src/yggdrasil/tun.go b/src/yggdrasil/tun.go
index 94adbcb..cbbcdea 100644
--- a/src/yggdrasil/tun.go
+++ b/src/yggdrasil/tun.go
@@ -3,6 +3,8 @@ package yggdrasil
 // This manages the tun driver to send/recv packets to/from applications
 
 import (
+	"yggdrasil/defaults"
+
 	"github.com/songgao/packets/ethernet"
 	"github.com/yggdrasil-network/water"
 )
@@ -20,21 +22,11 @@ type tunDevice struct {
 	iface  *water.Interface
 }
 
-// Defines which parameters are expected by default for a TUN/TAP adapter on a
-// specific platform. These values are populated in the relevant tun_*.go for
-// the platform being targeted. They must be set.
-type tunDefaultParameters struct {
-	maximumIfMTU     int
-	defaultIfMTU     int
-	defaultIfName    string
-	defaultIfTAPMode bool
-}
-
 // Gets the maximum supported MTU for the platform based on the defaults in
-// getDefaults().
+// defaults.GetDefaults().
 func getSupportedMTU(mtu int) int {
-	if mtu > getDefaults().maximumIfMTU {
-		return getDefaults().maximumIfMTU
+	if mtu > defaults.GetDefaults().MaximumIfMTU {
+		return defaults.GetDefaults().MaximumIfMTU
 	}
 	return mtu
 }
diff --git a/src/yggdrasil/tun_darwin.go b/src/yggdrasil/tun_darwin.go
index ff85aa4..e49ab52 100644
--- a/src/yggdrasil/tun_darwin.go
+++ b/src/yggdrasil/tun_darwin.go
@@ -13,17 +13,6 @@ import (
 	water "github.com/yggdrasil-network/water"
 )
 
-// Sane defaults for the Darwin/macOS platform. The "default" options may be
-// may be replaced by the running configuration.
-func getDefaults() tunDefaultParameters {
-	return tunDefaultParameters{
-		maximumIfMTU:     65535,
-		defaultIfMTU:     65535,
-		defaultIfName:    "auto",
-		defaultIfTAPMode: false,
-	}
-}
-
 // Configures the "utun" adapter with the correct IPv6 address and MTU.
 func (tun *tunDevice) setup(ifname string, iftapmode bool, addr string, mtu int) error {
 	if iftapmode {
diff --git a/src/yggdrasil/tun_freebsd.go b/src/yggdrasil/tun_freebsd.go
deleted file mode 100644
index 4cfdcee..0000000
--- a/src/yggdrasil/tun_freebsd.go
+++ /dev/null
@@ -1,12 +0,0 @@
-package yggdrasil
-
-// Sane defaults for the FreeBSD platform. The "default" options may be
-// may be replaced by the running configuration.
-func getDefaults() tunDefaultParameters {
-	return tunDefaultParameters{
-		maximumIfMTU:     32767,
-		defaultIfMTU:     32767,
-		defaultIfName:    "/dev/tap0",
-		defaultIfTAPMode: true,
-	}
-}
diff --git a/src/yggdrasil/tun_linux.go b/src/yggdrasil/tun_linux.go
index 977d73d..24c5aa9 100644
--- a/src/yggdrasil/tun_linux.go
+++ b/src/yggdrasil/tun_linux.go
@@ -12,17 +12,6 @@ import (
 	water "github.com/yggdrasil-network/water"
 )
 
-// Sane defaults for the Linux platform. The "default" options may be
-// may be replaced by the running configuration.
-func getDefaults() tunDefaultParameters {
-	return tunDefaultParameters{
-		maximumIfMTU:     65535,
-		defaultIfMTU:     65535,
-		defaultIfName:    "auto",
-		defaultIfTAPMode: false,
-	}
-}
-
 // Configures the TAP adapter with the correct IPv6 address and MTU.
 func (tun *tunDevice) setup(ifname string, iftapmode bool, addr string, mtu int) error {
 	var config water.Config
diff --git a/src/yggdrasil/tun_netbsd.go b/src/yggdrasil/tun_netbsd.go
deleted file mode 100644
index d3e93c4..0000000
--- a/src/yggdrasil/tun_netbsd.go
+++ /dev/null
@@ -1,12 +0,0 @@
-package yggdrasil
-
-// Sane defaults for the NetBSD platform. The "default" options may be
-// may be replaced by the running configuration.
-func getDefaults() tunDefaultParameters {
-	return tunDefaultParameters{
-		maximumIfMTU:     9000,
-		defaultIfMTU:     9000,
-		defaultIfName:    "/dev/tap0",
-		defaultIfTAPMode: true,
-	}
-}
diff --git a/src/yggdrasil/tun_openbsd.go b/src/yggdrasil/tun_openbsd.go
deleted file mode 100644
index c96c865..0000000
--- a/src/yggdrasil/tun_openbsd.go
+++ /dev/null
@@ -1,12 +0,0 @@
-package yggdrasil
-
-// Sane defaults for the OpenBSD platform. The "default" options may be
-// may be replaced by the running configuration.
-func getDefaults() tunDefaultParameters {
-	return tunDefaultParameters{
-		maximumIfMTU:     16384,
-		defaultIfMTU:     16384,
-		defaultIfName:    "/dev/tap0",
-		defaultIfTAPMode: true,
-	}
-}
diff --git a/src/yggdrasil/tun_other.go b/src/yggdrasil/tun_other.go
index 7bc7100..1a3721a 100644
--- a/src/yggdrasil/tun_other.go
+++ b/src/yggdrasil/tun_other.go
@@ -7,17 +7,6 @@ import water "github.com/yggdrasil-network/water"
 // This is to catch unsupported platforms
 // If your platform supports tun devices, you could try configuring it manually
 
-// These are sane defaults for any platform that has not been matched by one of
-// the other tun_*.go files.
-func getDefaults() tunDefaultParameters {
-	return tunDefaultParameters{
-		maximumIfMTU:     65535,
-		defaultIfMTU:     65535,
-		defaultIfName:    "none",
-		defaultIfTAPMode: false,
-	}
-}
-
 // Creates the TUN/TAP adapter, if supported by the Water library. Note that
 // no guarantees are made at this point on an unsupported platform.
 func (tun *tunDevice) setup(ifname string, iftapmode bool, addr string, mtu int) error {
diff --git a/src/yggdrasil/tun_windows.go b/src/yggdrasil/tun_windows.go
index 131bb34..c6e5770 100644
--- a/src/yggdrasil/tun_windows.go
+++ b/src/yggdrasil/tun_windows.go
@@ -10,17 +10,6 @@ import (
 
 // This is to catch Windows platforms
 
-// Sane defaults for the Windows platform. The "default" options may be
-// may be replaced by the running configuration.
-func getDefaults() tunDefaultParameters {
-	return tunDefaultParameters{
-		maximumIfMTU:     65535,
-		defaultIfMTU:     65535,
-		defaultIfName:    "auto",
-		defaultIfTAPMode: true,
-	}
-}
-
 // Configures the TAP adapter with the correct IPv6 address and MTU. On Windows
 // we don't make use of a direct operating system API to do this - we instead
 // delegate the hard work to "netsh".
diff --git a/yggdrasil.go b/yggdrasil.go
index 20b4aa0..ab237f4 100644
--- a/yggdrasil.go
+++ b/yggdrasil.go
@@ -23,6 +23,7 @@ import (
 
 	"yggdrasil"
 	"yggdrasil/config"
+	"yggdrasil/defaults"
 )
 
 type nodeConfig = config.NodeConfig
@@ -53,7 +54,7 @@ func generateConfig(isAutoconf bool) *nodeConfig {
 		r1 := rand.New(rand.NewSource(time.Now().UnixNano()))
 		cfg.Listen = fmt.Sprintf("[::]:%d", r1.Intn(65534-32768)+32768)
 	}
-	cfg.AdminListen = "localhost:9001"
+	cfg.AdminListen = defaults.GetDefaults().DefaultAdminListen
 	cfg.EncryptionPublicKey = hex.EncodeToString(bpub[:])
 	cfg.EncryptionPrivateKey = hex.EncodeToString(bpriv[:])
 	cfg.SigningPublicKey = hex.EncodeToString(spub[:])
@@ -61,9 +62,9 @@ func generateConfig(isAutoconf bool) *nodeConfig {
 	cfg.Peers = []string{}
 	cfg.AllowedEncryptionPublicKeys = []string{}
 	cfg.MulticastInterfaces = []string{".*"}
-	cfg.IfName = core.GetTUNDefaultIfName()
-	cfg.IfMTU = core.GetTUNDefaultIfMTU()
-	cfg.IfTAPMode = core.GetTUNDefaultIfTAPMode()
+	cfg.IfName = defaults.GetDefaults().DefaultIfName
+	cfg.IfMTU = defaults.GetDefaults().DefaultIfMTU
+	cfg.IfTAPMode = defaults.GetDefaults().DefaultIfTAPMode
 
 	return &cfg
 }
diff --git a/yggdrasilctl.go b/yggdrasilctl.go
index 5cea774..c4efe77 100644
--- a/yggdrasilctl.go
+++ b/yggdrasilctl.go
@@ -9,10 +9,12 @@ import "encoding/json"
 import "strconv"
 import "os"
 
+import "yggdrasil/defaults"
+
 type admin_info map[string]interface{}
 
 func main() {
-	server := flag.String("endpoint", "localhost:9001", "Admin socket endpoint")
+	server := flag.String("endpoint", defaults.GetDefaults().DefaultAdminListen, "Admin socket endpoint")
 	injson := flag.Bool("json", false, "Output in JSON format")
 	flag.Parse()
 	args := flag.Args()

From 36c89da848adb164d01da5b7ca78c34972b8f590 Mon Sep 17 00:00:00 2001
From: Neil Alexander <neilalexander@users.noreply.github.com>
Date: Sat, 7 Jul 2018 12:16:55 +0100
Subject: [PATCH 11/17] Stick with tcp://localhost:9001 as default for now

---
 src/yggdrasil/config/config.go             | 2 +-
 src/yggdrasil/defaults/defaults_darwin.go  | 2 +-
 src/yggdrasil/defaults/defaults_freebsd.go | 2 +-
 src/yggdrasil/defaults/defaults_linux.go   | 2 +-
 src/yggdrasil/defaults/defaults_netbsd.go  | 2 +-
 src/yggdrasil/defaults/defaults_openbsd.go | 2 +-
 6 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/src/yggdrasil/config/config.go b/src/yggdrasil/config/config.go
index 2b8fbe3..5b03e23 100644
--- a/src/yggdrasil/config/config.go
+++ b/src/yggdrasil/config/config.go
@@ -3,7 +3,7 @@ package config
 // NodeConfig defines all configuration values needed to run a signle yggdrasil node
 type NodeConfig struct {
 	Listen                      string   `comment:"Listen address for peer connections. Default is to listen for all\nTCP connections over IPv4 and IPv6 with a random port."`
-	AdminListen                 string   `comment:"Listen address for admin connections Default is to listen for local\nconnections only on TCP port 9001."`
+	AdminListen                 string   `comment:"Listen address for admin connections Default is to listen for local\nconnections either on TCP/9001 or a UNIX socket depending on your\nplatform. Use this value for yggdrasilctl -endpoint=X."`
 	Peers                       []string `comment:"List of connection strings for static peers in URI format, i.e.\ntcp://a.b.c.d:e or socks://a.b.c.d:e/f.g.h.i:j"`
 	AllowedEncryptionPublicKeys []string `comment:"List of peer encryption public keys to allow or incoming TCP\nconnections from. If left empty/undefined then all connections\nwill be allowed by default."`
 	EncryptionPublicKey         string   `comment:"Your public encryption key. Your peers may ask you for this to put\ninto their AllowedEncryptionPublicKeys configuration."`
diff --git a/src/yggdrasil/defaults/defaults_darwin.go b/src/yggdrasil/defaults/defaults_darwin.go
index b82660f..3a88274 100644
--- a/src/yggdrasil/defaults/defaults_darwin.go
+++ b/src/yggdrasil/defaults/defaults_darwin.go
@@ -7,7 +7,7 @@ package defaults
 func GetDefaults() platformDefaultParameters {
 	return platformDefaultParameters{
     // Admin
-		DefaultAdminListen: "unix:///var/run/yggdrasil.sock",
+		DefaultAdminListen: "tcp://localhost:9001",
 
     // TUN/TAP
     MaximumIfMTU:     65535,
diff --git a/src/yggdrasil/defaults/defaults_freebsd.go b/src/yggdrasil/defaults/defaults_freebsd.go
index 4ba7fac..7c5c775 100644
--- a/src/yggdrasil/defaults/defaults_freebsd.go
+++ b/src/yggdrasil/defaults/defaults_freebsd.go
@@ -7,7 +7,7 @@ package defaults
 func GetDefaults() platformDefaultParameters {
 	return platformDefaultParameters{
 		// Admin
-		DefaultAdminListen: "unix:///var/run/yggdrasil.sock",
+		DefaultAdminListen: "tcp://localhost:9001",
 
 		// TUN/TAP
 		MaximumIfMTU:     32767,
diff --git a/src/yggdrasil/defaults/defaults_linux.go b/src/yggdrasil/defaults/defaults_linux.go
index 4572f3c..2c54d0f 100644
--- a/src/yggdrasil/defaults/defaults_linux.go
+++ b/src/yggdrasil/defaults/defaults_linux.go
@@ -7,7 +7,7 @@ package defaults
 func GetDefaults() platformDefaultParameters {
 	return platformDefaultParameters{
     // Admin
-		DefaultAdminListen: "unix:///var/run/yggdrasil.sock",
+		DefaultAdminListen: "tcp://localhost:9001",
 
     // TUN/TAP
     MaximumIfMTU:     65535,
diff --git a/src/yggdrasil/defaults/defaults_netbsd.go b/src/yggdrasil/defaults/defaults_netbsd.go
index d9f3b4d..64dd5b0 100644
--- a/src/yggdrasil/defaults/defaults_netbsd.go
+++ b/src/yggdrasil/defaults/defaults_netbsd.go
@@ -7,7 +7,7 @@ package defaults
 func GetDefaults() platformDefaultParameters {
 	return platformDefaultParameters{
 		// Admin
-		DefaultAdminListen: "unix:///var/run/yggdrasil.sock",
+		DefaultAdminListen: "tcp://localhost:9001",
 
 		// TUN/TAP
 		MaximumIfMTU:     9000,
diff --git a/src/yggdrasil/defaults/defaults_openbsd.go b/src/yggdrasil/defaults/defaults_openbsd.go
index 1b3e0c0..1e9e28c 100644
--- a/src/yggdrasil/defaults/defaults_openbsd.go
+++ b/src/yggdrasil/defaults/defaults_openbsd.go
@@ -7,7 +7,7 @@ package defaults
 func GetDefaults() platformDefaultParameters {
 	return platformDefaultParameters{
 		// Admin
-		DefaultAdminListen: "unix:///var/run/yggdrasil.sock",
+		DefaultAdminListen: "tcp://localhost:9001",
 
 		// TUN/TAP
 		MaximumIfMTU:     16384,

From 14d48597da41bc73510140c34eeaba38750793b0 Mon Sep 17 00:00:00 2001
From: Neil Alexander <neilalexander@users.noreply.github.com>
Date: Sat, 7 Jul 2018 12:18:03 +0100
Subject: [PATCH 12/17] Fix openbsd and netbsd

---
 src/yggdrasil/defaults/defaults_netbsd.go  | 2 +-
 src/yggdrasil/defaults/defaults_openbsd.go | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/yggdrasil/defaults/defaults_netbsd.go b/src/yggdrasil/defaults/defaults_netbsd.go
index 64dd5b0..8e8f7b5 100644
--- a/src/yggdrasil/defaults/defaults_netbsd.go
+++ b/src/yggdrasil/defaults/defaults_netbsd.go
@@ -1,4 +1,4 @@
-// +build freebsd
+// +build netbsd
 
 package defaults
 
diff --git a/src/yggdrasil/defaults/defaults_openbsd.go b/src/yggdrasil/defaults/defaults_openbsd.go
index 1e9e28c..8b3e2bb 100644
--- a/src/yggdrasil/defaults/defaults_openbsd.go
+++ b/src/yggdrasil/defaults/defaults_openbsd.go
@@ -1,4 +1,4 @@
-// +build freebsd
+// +build openbsd
 
 package defaults
 

From 2a931df07af4bf889adf49cc896a61bf8e4484d4 Mon Sep 17 00:00:00 2001
From: Neil Alexander <neilalexander@users.noreply.github.com>
Date: Sat, 7 Jul 2018 12:34:10 +0100
Subject: [PATCH 13/17] Try to clean up UNIX domain admin sockets if shutdown
 properly

---
 src/yggdrasil/admin.go | 10 ++++++++++
 src/yggdrasil/core.go  |  1 +
 2 files changed, 11 insertions(+)

diff --git a/src/yggdrasil/admin.go b/src/yggdrasil/admin.go
index e02bf9e..cd3ea5c 100644
--- a/src/yggdrasil/admin.go
+++ b/src/yggdrasil/admin.go
@@ -227,6 +227,16 @@ func (a *admin) start() error {
 	return nil
 }
 
+// cleans up when stopping
+func (a *admin) stop() error {
+	if a.listenaddr[0:7] == "unix://" {
+		if err := os.Remove(a.listenaddr[7:]); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
 // listen is run by start and manages API connections.
 func (a *admin) listen() {
 	var l net.Listener
diff --git a/src/yggdrasil/core.go b/src/yggdrasil/core.go
index 6d130d8..5263676 100644
--- a/src/yggdrasil/core.go
+++ b/src/yggdrasil/core.go
@@ -135,6 +135,7 @@ func (c *Core) Start(nc *config.NodeConfig, log *log.Logger) error {
 func (c *Core) Stop() {
 	c.log.Println("Stopping...")
 	c.tun.close()
+	c.admin.stop()
 }
 
 // Generates a new encryption keypair. The encryption keys are used to

From a5af69df8a804cc9782570e98f3105e2a5b72643 Mon Sep 17 00:00:00 2001
From: Neil Alexander <neilalexander@users.noreply.github.com>
Date: Sat, 7 Jul 2018 20:04:11 +0100
Subject: [PATCH 14/17] Use Close() for admin socket

---
 src/yggdrasil/admin.go | 25 +++++++++++--------------
 src/yggdrasil/core.go  |  2 +-
 2 files changed, 12 insertions(+), 15 deletions(-)

diff --git a/src/yggdrasil/admin.go b/src/yggdrasil/admin.go
index cd3ea5c..caa4afc 100644
--- a/src/yggdrasil/admin.go
+++ b/src/yggdrasil/admin.go
@@ -20,6 +20,7 @@ import (
 type admin struct {
 	core       *Core
 	listenaddr string
+	listener   net.Listener
 	handlers   []admin_handlerInfo
 }
 
@@ -228,39 +229,35 @@ func (a *admin) start() error {
 }
 
 // cleans up when stopping
-func (a *admin) stop() error {
-	if a.listenaddr[0:7] == "unix://" {
-		if err := os.Remove(a.listenaddr[7:]); err != nil {
-			return err
-		}
-	}
-	return nil
+func (a *admin) close() error {
+	return a.listener.Close()
 }
 
 // listen is run by start and manages API connections.
 func (a *admin) listen() {
-	var l net.Listener
 	u, err := url.Parse(a.listenaddr)
 	if err == nil {
 		switch strings.ToLower(u.Scheme) {
 		case "unix":
-			l, err = net.Listen("unix", a.listenaddr[7:])
+			a.listener, err = net.Listen("unix", a.listenaddr[7:])
 		case "tcp":
-			l, err = net.Listen("tcp", u.Host)
+			a.listener, err = net.Listen("tcp", u.Host)
 		default:
 			err = errors.New("protocol not supported")
 		}
 	} else {
-		l, err = net.Listen("tcp", a.listenaddr)
+		a.listener, err = net.Listen("tcp", a.listenaddr)
 	}
 	if err != nil {
 		a.core.log.Printf("Admin socket failed to listen: %v", err)
 		os.Exit(1)
 	}
-	a.core.log.Printf("%s admin socket listening on %s", strings.ToUpper(l.Addr().Network()), l.Addr().String())
-	defer l.Close()
+	a.core.log.Printf("%s admin socket listening on %s",
+		strings.ToUpper(a.listener.Addr().Network()),
+		a.listener.Addr().String())
+	defer a.listener.Close()
 	for {
-		conn, err := l.Accept()
+		conn, err := a.listener.Accept()
 		if err == nil {
 			a.handleRequest(conn)
 		}
diff --git a/src/yggdrasil/core.go b/src/yggdrasil/core.go
index 5263676..13bb830 100644
--- a/src/yggdrasil/core.go
+++ b/src/yggdrasil/core.go
@@ -135,7 +135,7 @@ func (c *Core) Start(nc *config.NodeConfig, log *log.Logger) error {
 func (c *Core) Stop() {
 	c.log.Println("Stopping...")
 	c.tun.close()
-	c.admin.stop()
+	c.admin.close()
 }
 
 // Generates a new encryption keypair. The encryption keys are used to

From bf90447cc425b6cf80992191665e46146dacbeeb Mon Sep 17 00:00:00 2001
From: Arceliar <Arceliar@users.noreply.github.com>
Date: Sat, 7 Jul 2018 19:37:36 -0500
Subject: [PATCH 15/17] update admin socket error message and run gofmt

---
 src/yggdrasil/admin.go                     |  2 +-
 src/yggdrasil/defaults/defaults.go         |  2 +-
 src/yggdrasil/defaults/defaults_darwin.go  | 12 ++++++------
 src/yggdrasil/defaults/defaults_linux.go   | 12 ++++++------
 src/yggdrasil/defaults/defaults_other.go   | 12 ++++++------
 src/yggdrasil/defaults/defaults_windows.go | 12 ++++++------
 6 files changed, 26 insertions(+), 26 deletions(-)

diff --git a/src/yggdrasil/admin.go b/src/yggdrasil/admin.go
index a8ac501..128b1d7 100644
--- a/src/yggdrasil/admin.go
+++ b/src/yggdrasil/admin.go
@@ -245,7 +245,7 @@ func (a *admin) listen() {
 		case "tcp":
 			a.listener, err = net.Listen("tcp", u.Host)
 		default:
-			err = errors.New("protocol not supported")
+			err = errors.New(fmt.Sprint("protocol not supported: ", u.Scheme))
 		}
 	} else {
 		a.listener, err = net.Listen("tcp", a.listenaddr)
diff --git a/src/yggdrasil/defaults/defaults.go b/src/yggdrasil/defaults/defaults.go
index 6145539..753efc5 100644
--- a/src/yggdrasil/defaults/defaults.go
+++ b/src/yggdrasil/defaults/defaults.go
@@ -5,7 +5,7 @@ package defaults
 // for the platform being targeted. They must be set.
 type platformDefaultParameters struct {
 	// Admin socket
-	DefaultAdminListen	string
+	DefaultAdminListen string
 
 	// TUN/TAP
 	MaximumIfMTU     int
diff --git a/src/yggdrasil/defaults/defaults_darwin.go b/src/yggdrasil/defaults/defaults_darwin.go
index 3a88274..778162c 100644
--- a/src/yggdrasil/defaults/defaults_darwin.go
+++ b/src/yggdrasil/defaults/defaults_darwin.go
@@ -6,13 +6,13 @@ package defaults
 // may be replaced by the running configuration.
 func GetDefaults() platformDefaultParameters {
 	return platformDefaultParameters{
-    // Admin
+		// Admin
 		DefaultAdminListen: "tcp://localhost:9001",
 
-    // TUN/TAP
-    MaximumIfMTU:     65535,
-    DefaultIfMTU:     65535,
-    DefaultIfName:    "auto",
-    DefaultIfTAPMode: false,
+		// TUN/TAP
+		MaximumIfMTU:     65535,
+		DefaultIfMTU:     65535,
+		DefaultIfName:    "auto",
+		DefaultIfTAPMode: false,
 	}
 }
diff --git a/src/yggdrasil/defaults/defaults_linux.go b/src/yggdrasil/defaults/defaults_linux.go
index 2c54d0f..85287ee 100644
--- a/src/yggdrasil/defaults/defaults_linux.go
+++ b/src/yggdrasil/defaults/defaults_linux.go
@@ -6,13 +6,13 @@ package defaults
 // may be replaced by the running configuration.
 func GetDefaults() platformDefaultParameters {
 	return platformDefaultParameters{
-    // Admin
+		// Admin
 		DefaultAdminListen: "tcp://localhost:9001",
 
-    // TUN/TAP
-    MaximumIfMTU:     65535,
-    DefaultIfMTU:     65535,
-    DefaultIfName:    "auto",
-    DefaultIfTAPMode: false,
+		// TUN/TAP
+		MaximumIfMTU:     65535,
+		DefaultIfMTU:     65535,
+		DefaultIfName:    "auto",
+		DefaultIfTAPMode: false,
 	}
 }
diff --git a/src/yggdrasil/defaults/defaults_other.go b/src/yggdrasil/defaults/defaults_other.go
index 29e71e8..d780872 100644
--- a/src/yggdrasil/defaults/defaults_other.go
+++ b/src/yggdrasil/defaults/defaults_other.go
@@ -6,13 +6,13 @@ package defaults
 // may be replaced by the running configuration.
 func GetDefaults() platformDefaultParameters {
 	return platformDefaultParameters{
-    // Admin
+		// Admin
 		DefaultAdminListen: "tcp://localhost:9001",
 
-    // TUN/TAP
-    MaximumIfMTU:     65535,
-    DefaultIfMTU:     65535,
-    DefaultIfName:    "none",
-    DefaultIfTAPMode: false,
+		// TUN/TAP
+		MaximumIfMTU:     65535,
+		DefaultIfMTU:     65535,
+		DefaultIfName:    "none",
+		DefaultIfTAPMode: false,
 	}
 }
diff --git a/src/yggdrasil/defaults/defaults_windows.go b/src/yggdrasil/defaults/defaults_windows.go
index 91e9e0e..83877d6 100644
--- a/src/yggdrasil/defaults/defaults_windows.go
+++ b/src/yggdrasil/defaults/defaults_windows.go
@@ -6,13 +6,13 @@ package defaults
 // may be replaced by the running configuration.
 func GetDefaults() platformDefaultParameters {
 	return platformDefaultParameters{
-    // Admin
+		// Admin
 		DefaultAdminListen: "tcp://localhost:9001",
 
-    // TUN/TAP
-    MaximumIfMTU:     65535,
-    DefaultIfMTU:     65535,
-    DefaultIfName:    "auto",
-    DefaultIfTAPMode: true,
+		// TUN/TAP
+		MaximumIfMTU:     65535,
+		DefaultIfMTU:     65535,
+		DefaultIfName:    "auto",
+		DefaultIfTAPMode: true,
 	}
 }

From d59bdfeb99d71e612ca1c4aedbd9d64545317564 Mon Sep 17 00:00:00 2001
From: Neil Alexander <neilalexander@users.noreply.github.com>
Date: Sun, 8 Jul 2018 10:37:20 +0100
Subject: [PATCH 16/17] Fail to TCP when parsing AdminListen

---
 src/yggdrasil/admin.go | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/yggdrasil/admin.go b/src/yggdrasil/admin.go
index 128b1d7..cf56d41 100644
--- a/src/yggdrasil/admin.go
+++ b/src/yggdrasil/admin.go
@@ -245,7 +245,8 @@ func (a *admin) listen() {
 		case "tcp":
 			a.listener, err = net.Listen("tcp", u.Host)
 		default:
-			err = errors.New(fmt.Sprint("protocol not supported: ", u.Scheme))
+			// err = errors.New(fmt.Sprint("protocol not supported: ", u.Scheme))
+			a.listener, err = net.Listen("tcp", a.listenaddr)
 		}
 	} else {
 		a.listener, err = net.Listen("tcp", a.listenaddr)

From 69cf64dce56f9ed001ba39a0eada71ec28c6ade6 Mon Sep 17 00:00:00 2001
From: Neil Alexander <neilalexander@users.noreply.github.com>
Date: Sun, 8 Jul 2018 11:09:49 +0100
Subject: [PATCH 17/17] Update CHANGELOG.md

---
 CHANGELOG.md | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8d8b7d4..872c297 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -25,6 +25,17 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - in case of vulnerabilities.
 -->
 
+## [0.2.4] - 2018-07-08
+### Added
+- Support for UNIX domain sockets for the admin socket using `unix:///path/to/file.sock`
+- Centralised platform-specific defaults
+
+### Changed
+- Backpressure tuning, including reducing resource consumption
+
+### Fixed
+- macOS local ping bug, which previously prevented you from pinging your own `utun` adapter's IPv6 address
+
 ## [0.2.3] - 2018-06-29
 ### Added
 - Begin keeping changelog (incomplete and possibly inaccurate information before this point).