cmd/vail/book.go

@@ -1,23 +1,19 @@
 package main
 
 import (
+	"io"
 	"log"
 )
 
-// Book maps names to repeaters
-//
-// It ensures that names map 1-1 to repeaters.
 type Book struct {
 	entries map[string]*Repeater
 	events  chan bookEvent
-	makeRepeater func() *Repeater
 }
 
 func NewBook() Book {
 	return Book{
 		entries: make(map[string]*Repeater),
 		events:  make(chan bookEvent, 5),
-		makeRepeater: NewRepeater,
 	}
 }
 
@@ -32,38 +28,34 @@ const (
 type bookEvent struct {
 	eventType bookEventType
 	name      string
-	sender    MessageSender
+	w         io.Writer
-	m         Message
+	p         []byte
 }
 
-// Join adds a writer to a named repeater
+func (b Book) Join(name string, w io.Writer) {
-func (b Book) Join(name string, sender MessageSender) {
 	b.events <- bookEvent{
 		eventType: joinEvent,
 		name:      name,
-		sender:    sender,
+		w:         w,
 	}
 }
 
-// Part removes a writer from a named repeater
+func (b Book) Part(name string, w io.Writer) {
-func (b Book) Part(name string, sender MessageSender) {
 	b.events <- bookEvent{
 		eventType: partEvent,
 		name:      name,
-		sender:    sender,
+		w:         w,
 	}
 }
 
-// Send transmits a message to the named repeater
+func (b Book) Send(name string, p []byte) {
-func (b Book) Send(name string, m Message) {
 	b.events <- bookEvent{
 		eventType: sendEvent,
 		name:      name,
-		m:         m,
+		p:         p,
 	}
 }
 
-// Run is the endless run loop
 func (b Book) Run() {
 	for {
 		b.loop()
@@ -77,16 +69,16 @@ func (b Book) loop() {
 	switch event.eventType {
 	case joinEvent:
 		if !ok {
-			repeater = b.makeRepeater()
+			repeater = NewRepeater()
 			b.entries[event.name] = repeater
 		}
-		repeater.Join(event.sender)
+		repeater.Join(event.w)
 	case partEvent:
 		if !ok {
 			log.Println("WARN: Parting an empty channel:", event.name)
 			break
 		}
-		repeater.Part(event.sender)
+		repeater.Part(event.w)
 		if repeater.Listeners() == 0 {
 			delete(b.entries, event.name)
 		}
@@ -95,6 +87,6 @@ func (b Book) loop() {
 			log.Println("WARN: Sending to an empty channel:", event.name)
 			break
 		}
-		repeater.Send(event.m)
+		repeater.Send(event.p)
 	}
 }

cmd/vail/book_test.go

@@ -1,57 +1,59 @@
 package main
 
 import (
+	"bytes"
 	"testing"
 )
 
 func TestBook(t *testing.T) {
-	b := Book{
+	b := NewBook()
-		entries:      make(map[string]*Repeater),
-		events:       make(chan bookEvent, 5),
-		makeRepeater: NewTestingRepeater,
-	}
 
-	c1 := NewTestingClient(t)
+	buf1 := bytes.NewBufferString("buf1")
-	b.Join("moo", c1)
+	b.Join("moo", buf1)
 	b.loop()
 	if len(b.entries) != 1 {
 		t.Error("Wrong number of entries")
 	}
-	c1.Expect(1)
 
 	// Send to an empty channel
-	m := Message{0, 0, []uint16{22, 33}}
+	b.Send("merf", []byte("goober"))
-	b.Send("merf", m)
 	b.loop()
-	if c1.Len() > 0 {
+	if buf1.String() != "buf1" {
 		t.Error("Sending to empty channel sent to non-empty channel")
 	}
 
 	// Send to a non-empty channel!
-	b.Send("moo", m)
+	b.Send("moo", []byte("goober"))
 	b.loop()
-	c1.Expect(1, 22, 33)
+	if buf1.String() != "buf1goober" {
+		t.Error("Sending didn't work")
+	}
 
 	// Join another client
-	c2 := NewTestingClient(t)
+	buf2 := bytes.NewBufferString("buf2")
-	b.Join("moo", c2)
+	b.Join("moo", buf2)
 	b.loop()
-	c1.Expect(2)
-	c2.Expect(2)
 
 	// Send to both
-	m.Duration = append(m.Duration, 44)
+	b.Send("moo", []byte("snerk"))
-	b.Send("moo", m)
 	b.loop()
-	c1.Expect(2, 22, 33, 44)
+	if buf1.String() != "buf1goobersnerk" {
-	c2.Expect(2, 22, 33, 44)
+		t.Error("Send to 2-member channel busted", buf1)
+	}
+	if buf2.String() != "buf2snerk" {
+		t.Error("Send to 2-member channel busted", buf2)
+	}
 
 	// Part a client
-	b.Part("moo", c1)
+	b.Part("moo", buf1)
 	b.loop()
-	c2.Expect(1)
 
-	b.Send("moo", m)
+	b.Send("moo", []byte("peanut"))
 	b.loop()
-	c2.Expect(1, 22, 33, 44)
+	if buf1.String() != "buf1goobersnerk" {
+		t.Error("Parted channel but still getting messages", buf1)
+	}
+	if buf2.String() != "buf2snerkpeanut" {
+		t.Error("Someone else parting somehow messed up sends", buf2)
+	}
 }

cmd/vail/main.go

@@ -1,145 +1,49 @@
 package main
 
 import (
-	"context"
-	"encoding/json"
 	"fmt"
+	"time"
+	"os"
 	"log"
 	"net/http"
-	"os"
+	"golang.org/x/net/websocket"
-	"time"
-
-	"nhooyr.io/websocket"
 )
 
 var book Book
 
-const JsonProtocol = "json.vail.woozle.org"
+type Client struct {
-const BinaryProtocol = "binary.vail.woozle.org"
+	repeaterName string
-
-// Clock defines an interface for getting the current time.
-//
-// We use this in testing to provide a fixed value for the current time, so we
-// can still compare clocks.
-type Clock interface {
-	Now() time.Time
 }
 
-// WallClock is a Clock which provides the actual time
+func (c Client) Handle(ws *websocket.Conn) {
-type WallClock struct{}
+	ws.MaxPayloadBytes = 500
+	book.Join(c.repeaterName, ws)
+	defer book.Part(c.repeaterName, ws)
 	
-func (WallClock) Now() time.Time {
+	// Tell the client what time we think it is
-	return time.Now()
+	fmt.Fprintf(ws, "[%d]", time.Now().UnixNano() / time.Millisecond.Nanoseconds())
-}
 
-// VailWebSocketConnection reads and writes Message structs
+	for {
-type VailWebSocketConnection struct {
+		buf := make([]byte, ws.MaxPayloadBytes)
-	*websocket.Conn
-	usingJSON bool
-}
 
-func (c *VailWebSocketConnection) Receive() (Message, error) {
+		if n, err := ws.Read(buf); err != nil {
-	var m Message
+			break
-	messageType, buf, err := c.Read(context.Background())
-	if err != nil {
-		return m, err
-	}
-
-	if messageType == websocket.MessageText {
-		err = json.Unmarshal(buf, &m)
 		} else {
-		err = m.UnmarshalBinary(buf)
+		  buf = buf[:n]
-	}
-	return m, err
-}
-
-func (c *VailWebSocketConnection) Send(m Message) error {
-	var err error
-	var buf []byte
-	var messageType websocket.MessageType
-
-	if c.usingJSON {
-		messageType = websocket.MessageText
-		buf, err = json.Marshal(m)
-	} else {
-		messageType = websocket.MessageBinary
-		buf, err = m.MarshalBinary()
-	}
-	if err != nil {
-		return err
 		}
 		
-	return c.Write(context.Background(), messageType, buf)
+		book.Send(c.repeaterName, buf)
+	}
 }
 
 func ChatHandler(w http.ResponseWriter, r *http.Request) {
-	forwardedFor := r.Header.Get("X-Forwarded-For")
+	c := Client {
-	client := fmt.Sprintf("<%s|%s>", forwardedFor, r.RemoteAddr)
+		repeaterName: r.FormValue("repeater"),
-
-	// Set up websocket
-	ws, err := websocket.Accept(
-		w, r,
-		&websocket.AcceptOptions{
-			Subprotocols: []string{JsonProtocol, BinaryProtocol},
-		},
-	)
-	if err != nil {
-		log.Println(err)
-		return
-	}
-	defer ws.Close(websocket.StatusInternalError, "Internal error")
-
-	// Create our Vail websocket connection for books to send to
-	sock := VailWebSocketConnection{
-		Conn: ws,
 	}
 
-	// websockets apparently sends a subprotocol string, so we can ignore Accept headers!
+	// This API is confusing as hell.
-	switch ws.Subprotocol() {
+	// I suspect there's a better way to do this.
-	case JsonProtocol:
+	websocket.Handler(c.Handle).ServeHTTP(w, r)
-		sock.usingJSON = true
-	case BinaryProtocol:
-		sock.usingJSON = false
-	default:
-		ws.Close(websocket.StatusPolicyViolation, "client must speak a vail protocol")
-		return
-	}
-
-	// Join the repeater
-	repeaterName := r.FormValue("repeater")
-	book.Join(repeaterName, &sock)
-	defer book.Part(repeaterName, &sock)
-
-	log.Println(client, repeaterName, "connect")
-
-	for {
-		// Read a packet
-		m, err := sock.Receive()
-		if err != nil {
-			ws.Close(websocket.StatusInvalidFramePayloadData, err.Error())
-			break
-		}
-
-		// If it's empty, skip it
-		if len(m.Duration) == 0 {
-			continue
-		}
-
-		// If it's wildly out of time, reject it
-		timeDelta := time.Duration(time.Now().UnixMilli()-m.Timestamp) * time.Millisecond
-		if timeDelta < 0 {
-			timeDelta = -timeDelta
-		}
-		if timeDelta > 2*time.Second {
-			log.Println(err)
-			ws.Close(websocket.StatusInvalidFramePayloadData, "Your clock is off by too much")
-			break
-		}
-
-		book.Send(repeaterName, m)
-	}
-
-	log.Println(client, repeaterName, "disconnect")
 }
 
 func main() {
@@ -153,7 +57,7 @@ func main() {
 		port = "8080"
 	}
 	log.Println("Listening on port", port)
-	err := http.ListenAndServe(":"+port, nil)
+	err := http.ListenAndServe(":" + port, nil)
 	if err != nil {
 		log.Fatal(err.Error())
 	}

cmd/vail/message.go

@@ -6,49 +6,32 @@ import (
 	"time"
 )
 
-// MessageSender can send Messages
+// VailMessage is a single Vail message.
-type MessageSender interface {
-	Send(m Message) error
-}
-
-// MessageReceiver can receive Messages
-type MessageReceiver interface {
-	Receive() (Message, error)
-}
-
-// MessageSocket can send and receive Messages
-type MessageSocket interface {
-	MessageSender
-	MessageReceiver
-}
-
-// Message is a single Vail message.
 type Message struct {
-	// Timestamp of this message. Milliseconds since epoch.
+	// Relative time in ms of this message.
+	// These timestamps need to be consistent, but the offset can be anything.
+	// ECMAScript `performance.now()` is ideal.
 	Timestamp int64
 	
-	// Number of connected clients.
+	// Message timing in ms.
-	Clients uint16
-
-	// Message timing in milliseconds.
 	// Timings alternate between tone and silence.
 	// For example, `A` could be sent as [80, 80, 240]
-	Duration []uint16
+	Duration []uint8
 }
 
-func NewMessage(ts time.Time, durations ...time.Duration) Message {
+func NewMessage(ts time.Time, durations []time.Duration) Message {
 	msg := Message{
 		Timestamp: ts.UnixNano() / time.Millisecond.Nanoseconds(),
-		Duration:  make([]uint16, len(durations)),
+		Duration: make([]uint8, len(durations)),
 	}
 	for i, dns := range durations {
 		ms := dns.Milliseconds()
-		if ms > 255 {
+		if (ms > 255) {
 			ms = 255
-		} else if ms < 0 {
+		} else if (ms < 0) {
 			ms = 0
 		}
-		msg.Duration[i] = uint16(ms)
+		msg.Duration[i] = uint8(ms)
 	}
 	return msg
 }
@@ -59,26 +42,20 @@ func (m Message) MarshalBinary() ([]byte, error) {
 	if err := binary.Write(&w, binary.BigEndian, m.Timestamp); err != nil {
 		return nil, err
 	}
-	if err := binary.Write(&w, binary.BigEndian, m.Clients); err != nil {
-		return nil, err
-	}
 	if err := binary.Write(&w, binary.BigEndian, m.Duration); err != nil {
 		return nil, err
 	}
 	return w.Bytes(), nil
 }
 
-// UnmarshalBinary unpacks a binary buffer into a Message.
+// Unmarshaling presumes something else is keeping track of lengths
 func (m *Message) UnmarshalBinary(data []byte) error {
 	r := bytes.NewReader(data)
 	if err := binary.Read(r, binary.BigEndian, &m.Timestamp); err != nil {
 		return err
 	}
-	if err := binary.Read(r, binary.BigEndian, &m.Clients); err != nil {
+	dlen := r.Len()
-		return err
+	m.Duration = make([]uint8, dlen)
-	}
-	dlen := r.Len() / 2
-	m.Duration = make([]uint16, dlen)
 	if err := binary.Read(r, binary.BigEndian, &m.Duration); err != nil {
 		return err
 	}

cmd/vail/message_test.go

@@ -6,9 +6,9 @@ import (
 	"time"
 )
 
-func TestMessageStruct(t *testing.T) {
+func TestMessage(t *testing.T) {
-	m := Message{0x1122334455, 0, []uint16{0xaa, 0xbb, 0xcc}}
+	m := Message{0x1122334455, []uint8{0xaa, 0xbb, 0xcc}}
-	m2 := Message{12, 0, []uint16{1}}
+	m2 := Message{12, []uint8{1}}
 
 	if !m.Equal(m) {
 		t.Error("Equal messages did not compare equal")
@@ -16,7 +16,7 @@ func TestMessageStruct(t *testing.T) {
 	if m.Equal(m2) {
 		t.Error("Unequal messages compared equal")
 	}
-	if m.Equal(Message{m.Timestamp, 0, []uint16{1, 2, 3}}) {
+	if m.Equal(Message{m.Timestamp, []uint8{1, 2, 3}}) {
 		t.Error("Messages with different payloads compared equal")
 	}
 
@@ -24,7 +24,7 @@ func TestMessageStruct(t *testing.T) {
 	if err != nil {
 		t.Error(err)
 	}
-	if !bytes.Equal(bm, []byte("\x00\x00\x00\x11\x22\x33\x44\x55\x00\x00\x00\xaa\x00\xbb\x00\xcc")) {
+	if !bytes.Equal(bm, []byte("\x00\x00\x00\x11\x22\x33\x44\x55\xaa\xbb\xcc")) {
 		t.Error("Encoded wrong:", bm)
 	}
 
@@ -40,9 +40,11 @@ func TestMessageStruct(t *testing.T) {
 			0,
 			m.Timestamp*time.Millisecond.Nanoseconds(),
 		),
-		time.Duration(m.Duration[0])*time.Millisecond,
+		[]time.Duration{
-		time.Duration(m.Duration[1])*time.Millisecond,
+			time.Duration(m.Duration[0]) * time.Millisecond,
-		time.Duration(m.Duration[2])*time.Millisecond,
+			time.Duration(m.Duration[1]) * time.Millisecond,
+			time.Duration(m.Duration[2]) * time.Millisecond,
+		},
 	)
 	if !m.Equal(m3) {
 		t.Error("NewMessage didn't work", m, m3)

cmd/vail/repeater.go

@@ -1,56 +1,40 @@
 package main
 
 import (
-	"time"
+	"io"
 )
 
-// A Repeater is just a list of senders.
+// A Repeater is just a list of Writers.
 type Repeater struct {
-	clock   Clock
+	writers []io.Writer
-	senders []MessageSender
 }
 
-// NewRepeater returns a newly-created repeater
 func NewRepeater() *Repeater {
 	return &Repeater{
-		clock:   WallClock{},
+		writers: make([]io.Writer, 0, 20),
-		senders: make([]MessageSender, 0, 20),
 	}
 }
 
-// Join joins a writer to this repeater
+func (r *Repeater) Join(w io.Writer) {
-func (r *Repeater) Join(sender MessageSender) {
+	r.writers = append(r.writers, w)
-	r.senders = append(r.senders, sender)
-	r.SendMessage()
 }
 
-// Part removes a writer from this repeater
+func (r *Repeater) Part(w io.Writer) {
-func (r *Repeater) Part(sender MessageSender) {
+	for i, s := range r.writers {
-	for i, s := range r.senders {
+		if s == w {
-		if s == sender {
+			nsubs := len(r.writers)
-			nsubs := len(r.senders)
+			r.writers[i] = r.writers[nsubs-1]
-			r.senders[i] = r.senders[nsubs-1]
+			r.writers = r.writers[:nsubs-1]
-			r.senders = r.senders[:nsubs-1]
 		}
 	}
-	r.SendMessage()
 }
 
-// Send send a message to all connected clients
+func (r *Repeater) Send(p []byte) {
-func (r *Repeater) Send(m Message) {
+	for _, s := range r.writers {
-	m.Clients = uint16(r.Listeners())
+		s.Write(p)
-	for _, s := range r.senders {
-		s.Send(m)
 	}
 }
 
-// SendMessage constructs and sends a message
-func (r *Repeater) SendMessage(durations ...time.Duration) {
-	m := NewMessage(r.clock.Now(), durations...)
-	r.Send(m)
-}
-
-// Listeners returns the number of connected clients
 func (r *Repeater) Listeners() int {
-	return len(r.senders)
+	return len(r.writers)
 }

cmd/vail/repeater_test.go

@@ -1,85 +1,39 @@
 package main
 
 import (
+	"bytes"
 	"testing"
-	"time"
 )
 
-type FakeClock struct{}
-
-func (f FakeClock) Now() time.Time {
-	return time.UnixMilli(0)
-}
-
-type TestingClient struct {
-	buf      []Message
-	expected []Message
-	t        *testing.T
-}
-
-func NewTestingClient(t *testing.T) *TestingClient {
-	return &TestingClient{
-		t: t,
-	}
-}
-
-func (tc *TestingClient) Send(m Message) error {
-	tc.buf = append(tc.buf, m)
-	return nil
-}
-
-func (tc *TestingClient) Len() int {
-	return len(tc.buf)
-}
-
-func (tc *TestingClient) Expect(clients uint16, payload ...uint16) {
-	m := Message{0, clients, payload}
-	tc.expected = append(tc.expected, m)
-	if len(tc.buf) != len(tc.expected) {
-		tc.t.Errorf("Client buffer mismatch. Wanted length %d, got length %d", len(tc.expected), len(tc.buf))
-	}
-	for i := 0; i < len(tc.buf); i++ {
-		if !tc.buf[i].Equal(tc.expected[i]) {
-			tc.t.Errorf("Client buffer mismatch at entry %d. Wanted %#v, got %#v", i, tc.expected[i], tc.buf[i])
-		}
-	}
-
-	tc.buf = []Message{}
-	tc.expected = []Message{}
-}
-
-func NewTestingRepeater() *Repeater {
-	return &Repeater{
-		clock:   FakeClock{},
-		senders: make([]MessageSender, 0, 2),
-	}
-}
-
 func TestRepeater(t *testing.T) {
-	r := NewTestingRepeater()
+	r := NewRepeater()
 
-	c1 := NewTestingClient(t)
+	buf1 := bytes.NewBufferString("buf1")
-	r.Join(c1)
+	r.Join(buf1)
-	c1.Expect(1)
+	if r.Listeners() != 1 {
+		t.Error("Joining did nothing")
+	}
+	r.Send([]byte("moo"))
+	if buf1.String() != "buf1moo" {
+		t.Error("Client 1 not repeating", buf1)
+	}
 
-	r.SendMessage(15 * time.Millisecond)
+	buf2 := bytes.NewBufferString("buf2")
-	c1.Expect(1, 15)
+	r.Join(buf2)
+	r.Send([]byte("bar"))
+	if buf1.String() != "buf1moobar" {
+		t.Error("Client 1 not repeating", buf1)
+	}
+	if buf2.String() != "buf2bar" {
+		t.Error("Client 2 not repeating", buf2)
+	}
 
-	c2 := NewTestingClient(t)
+	r.Part(buf1)
-	r.Join(c2)
+	r.Send([]byte("baz"))
-	c1.Expect(2)
+	if buf1.String() != "buf1moobar" {
-	c2.Expect(2)
+		t.Error("Client 1 still getting data after part", buf1)
-
+	}
-	r.SendMessage(58 * time.Millisecond)
+	if buf2.String() != "buf2barbaz" {
-	c1.Expect(2, 58)
+		t.Error("Client 2 not getting data after part", buf2)
-	c2.Expect(2, 58)
-
-	r.Part(c1)
-	c2.Expect(1)
-
-	r.SendMessage(5 * time.Millisecond)
-	c2.Expect(1, 5)
-	if c1.Len() > 0 {
-		t.Error("Client 1 still getting data after part")
 	}
 }

go.mod

@@ -2,8 +2,4 @@ module github.com/nealey/vail
 
 go 1.12
 
-require (
+require golang.org/x/net v0.0.0-20200501053045-e0ff5e5a1de5
-	github.com/gin-gonic/gin v1.8.1 // indirect
-	github.com/klauspost/compress v1.15.6 // indirect
-	nhooyr.io/websocket v1.8.7
-)

go.sum

@@ -1,133 +1,6 @@
-github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
-github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+golang.org/x/net v0.0.0-20200501053045-e0ff5e5a1de5 h1:WQ8q63x+f/zpC8Ac1s9wLElVoHhm32p6tudrU72n1QA=
-github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+golang.org/x/net v0.0.0-20200501053045-e0ff5e5a1de5/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
-github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-github.com/gin-contrib/sse v0.1.0 h1:Y/yl/+YNO8GZSjAhjMsSuLt29uWRFHdHYUb5lYOV9qE=
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+  <circle cx= "2" cy= "6" r="2" style="stroke: #000; fill: none;"/>
+  <circle cx= "6" cy= "2" r="2" style="stroke: #000; fill: none;"/>
+</svg>

static/b1.svg

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<svg viewBox="-1 -1 15 15" xmlns="http://www.w3.org/2000/svg">
+  <circle cx= "6" cy="10" r="2" style="stroke: #000; fill: none;"/>
+  <circle cx="10" cy= "6" r="2" style="stroke: #000;"/>
+  <circle cx= "2" cy= "6" r="2" style="stroke: #000; fill: none;"/>
+  <circle cx= "6" cy= "2" r="2" style="stroke: #000; fill: none;"/>
+</svg>

static/b2.svg

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<svg viewBox="-1 -1 15 15" xmlns="http://www.w3.org/2000/svg">
+  <circle cx= "6" cy="10" r="2" style="stroke: #000; fill: none;"/>
+  <circle cx="10" cy= "6" r="2" style="stroke: #000; fill: none;"/>
+  <circle cx= "2" cy= "6" r="2" style="stroke: #000;"/>
+  <circle cx= "6" cy= "2" r="2" style="stroke: #000; fill: none;"/>
+</svg>

static/b3.svg

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<svg viewBox="-1 -1 15 15" xmlns="http://www.w3.org/2000/svg">
+  <circle cx= "6" cy="10" r="2" style="stroke: #000; fill: none;"/>
+  <circle cx="10" cy= "6" r="2" style="stroke: #000; fill: none;"/>
+  <circle cx= "2" cy= "6" r="2" style="stroke: #000; fill: none;"/>
+  <circle cx= "6" cy= "2" r="2" style="stroke: #000;"/>
+</svg>

static/buzzer.mjs

@@ -27,9 +27,7 @@ const Second = 1000 * Millisecond
  const OscillatorRampDuration = 5*Millisecond
 
 console.warn("Chrome will now complain about an AudioContext not being allowed to start. This is normal, and there is no way to make Chrome stop complaining about this.")
-const BuzzerAudioContext = new AudioContext({
+const BuzzerAudioContext = new AudioContext()
-	latencyHint: 0,
-})
 /**
  * Compute the special "Audio Context" time
  * 
@@ -44,6 +42,13 @@ function BuzzerAudioContextTime(when) {
     return Math.max(when - acOffset, 0) / Second
 }
 
+/**
+ * Block until the audio system is able to start making noise.
+ */
+async function Ready() {
+    await BuzzerAudioContext.resume()
+}
+
 class Oscillator {
     /**
      * Create a new oscillator, and encase it in a Gain for control.
@@ -137,10 +142,6 @@ class Sample {
  * A (mostly) virtual class defining a buzzer.
  */
 class Buzzer {
-	constructor() {
-		this.connected = true
-	}
-
 	/**
 	  * Signal an error
 	  */
@@ -154,7 +155,7 @@ class Buzzer {
 	  * @param {boolean} tx Transmit or receive tone
 	  * @param {number} when Time to begin, in ms (0=now)
 	  */
-	async Buzz(tx, when=0) {
+	Buzz(tx, when=0) {
 		console.log("Buzz", tx, when)
 	}
 
@@ -164,7 +165,7 @@ class Buzzer {
 	  * @param {boolean} tx Transmit or receive tone
 	  * @param {number} when Time to end, in ms (0=now)
 	  */
-	async Silence(tx, when=0) {
+	Silence(tx, when=0) {
 		console.log("Silence", tx, when)
 	}
 
@@ -179,15 +180,6 @@ class Buzzer {
 		this.Buzz(tx, when)
 		this.Silence(tx, when + duration)
 	}
-
-	/**
-	 * Set the "connectedness" indicator.
-	 * 
-	 * @param {boolean} connected True if connected
-	 */
-	SetConnected(connected) {
-		this.connected = connected
-	}
 }
 
 class AudioBuzzer extends Buzzer {
@@ -218,12 +210,6 @@ class ToneBuzzer extends AudioBuzzer {
 
 		this.rxOsc = new Oscillator(lowFreq, txGain)
 		this.txOsc = new Oscillator(highFreq, txGain)
-
-		// Keep the speaker going always. This keeps the browser from "swapping out" our audio context.
-		if (false) {
-			this.bgOsc = new Oscillator(1, 0.001)
-			this.bgOsc.SoundAt()
-		}
 	}
 
 	/**
@@ -232,7 +218,7 @@ class ToneBuzzer extends AudioBuzzer {
 	  * @param {boolean} tx Transmit or receive tone
 	  * @param {number} when Time to begin, in ms (0=now)
 	  */
-	async Buzz(tx, when = null) {
+	Buzz(tx, when = null) {
         let osc = tx?this.txOsc:this.rxOsc
         osc.SoundAt(when)
 	}
@@ -243,7 +229,7 @@ class ToneBuzzer extends AudioBuzzer {
 	  * @param {boolean} tx Transmit or receive tone
 	  * @param {number} when Time to end, in ms (0=now)
 	  */
-	async Silence(tx, when = null) {
+	Silence(tx, when = null) {
         let osc = tx?this.txOsc:this.rxOsc
         osc.HushAt(when)
 	}
@@ -259,11 +245,11 @@ class TelegraphBuzzer extends AudioBuzzer{
 
         this.hum = new Oscillator(140, 0.005, "sawtooth")
 
-        this.closeSample = new Sample("../assets/telegraph-a.mp3")
+        this.closeSample = new Sample("telegraph-a.mp3")
-        this.openSample = new Sample("../assets/telegraph-b.mp3")
+        this.openSample = new Sample("telegraph-b.mp3")
 	}
 
-	async Buzz(tx, when=0) {
+	Buzz(tx, when=0) {
         if (tx) {
             this.hum.SoundAt(when)
         } else {
@@ -271,7 +257,7 @@ class TelegraphBuzzer extends AudioBuzzer{
         }
 	}
 
-	async Silence(tx ,when=0) {
+	Silence(tx ,when=0) {
         if (tx) {
             this.hum.HushAt(when)
         } else {
@@ -280,196 +266,29 @@ class TelegraphBuzzer extends AudioBuzzer{
 	}
 }
 
-class LampBuzzer extends Buzzer {
+class Lamp extends Buzzer {
-	constructor() {
+	constructor(element) {
 		super()
-		this.elements = document.querySelectorAll(".recv-lamp")
+		this.element = element
 	}
 
-	async Buzz(tx, when=0) {
+	Buzz(tx, when=0) {
 		if (tx) return
 
 		let ms = when?when - Date.now():0
 		setTimeout(
 			() =>{
-				for (let e of this.elements) {
+				this.element.classList.add("rx")
-					e.classList.add("rx")
-				}
 			},
 			ms,
 		)
 	}
-	async Silence(tx, when=0) {
+	Silence(tx, when=0) {
 		if (tx) return
 
 		let ms = when?when - Date.now():0
-		setTimeout(
+		setTimeout(() => this.element.classList.remove("rx"), ms)
-			() => {
-				for (let e of this.elements) {
-					e.classList.remove("rx")
-				}
-			},
-			ms,
-		)
-	}
-
-	SetConnected(connected) {
-		for (let e of this.elements) {
-			if (connected) {
-				e.classList.add("connected")
-			} else {
-				e.classList.remove("connected")
-			}
-		}
 	}
 }
 
-class MIDIBuzzer extends Buzzer {
+export {Ready, ToneBuzzer, TelegraphBuzzer, Lamp}
-	constructor() {
-		super()
-		this.SetNote(69) // A4; 440Hz
-
-		this.midiAccess = {outputs: []} // stub while we wait for async stuff
-		if (navigator.requestMIDIAccess) {
-			this.midiInit()
-		}
-	}
-
-	async midiInit(access) {
-		this.outputs = new Set()
-		this.midiAccess = await navigator.requestMIDIAccess()
-		this.midiAccess.addEventListener("statechange", e => this.midiStateChange(e))
-		this.midiStateChange()
-	}
-
-	midiStateChange(event) {
-		let newOutputs = new Set()
-		for (let output of this.midiAccess.outputs.values()) {
-			if ((output.state != "connected") || (output.name.includes("Through"))) {
-				continue
-			}
-			newOutputs.add(output)
-		}
-		this.outputs = newOutputs
-	}
-
-	sendAt(when, message) {
-		let ms = when?when - Date.now():0
-		setTimeout(
-			() => {
-				for (let output of this.outputs) {
-					output.send(message)
-				}
-			},
-			ms,
-		)
-	}
-
-	async Buzz(tx, when=0) {
-		if (tx) {
-			return
-		}
-
-		this.sendAt(when, [0x90, this.note, 0x7f])
-	}
-
-	async Silence(tx, when=0) {
-		if (tx) {
-			return
-		}
-
-		this.sendAt(when, [0x80, this.note, 0x7f])
-	}
-
-	/*
-	* Set note to transmit
-	*/
-	SetNote(tx, note) {
-		if (tx) {
-			return
-		}
-		this.note = note
-	}
-}
-
-/**
- * Block until the audio system is able to start making noise.
- */
-async function AudioReady() {
-    await BuzzerAudioContext.resume()
-}
-
-class Collection {
-	constructor() {
-		this.tone = new ToneBuzzer()
-		this.telegraph = new TelegraphBuzzer()
-		this.lamp = new LampBuzzer()
-		this.midi = new MIDIBuzzer()
-		this.collection = new Set([this.tone, this.lamp, this.midi])
-	}
-
-	/**
-	 * Set the audio output type.
-	 * 
-	 * @param {string} audioType "telegraph" for telegraph mode, otherwise tone mode
-	 */
-	SetAudioType(audioType) {
-		this.collection.delete(this.telegraph)
-		this.collection.delete(this.tone)
-		if (audioType == "telegraph") {
-			this.collection.add(this.telegraph)
-		} else {
-			this.collection.add(this.tone)
-		}
-	}
-
-	/**
-	 * Buzz all outputs.
-	 * 
-	 * @param tx True if transmitting
-	 */
-	Buzz(tx=False) {
-		for (let b of this.collection) {
-			b.Buzz(tx)
-		}
-	}
-
-	/**
-	 * Silence all outputs.
-	 * 
-	 * @param tx True if transmitting
-	 */
-	Silence(tx=false) {
-		for (let b of this.collection) {
-			b.Silence(tx)
-		}
-	}
-
-	/**
-	 * Buzz for a certain duration at a certain time
-	 * 
-	 * @param tx True if transmitting
-	 * @param when Time to begin
-	 * @param duration How long to buzz
-	 */
-	BuzzDuration(tx, when, duration) {
-		for (let b of this.collection) {
-			b.BuzzDuration(tx, when, duration)
-		}
-	}
-
-	/**
-	 * Update the "connected" status display.
-	 * 
-	 * For example, turn the receive light to black if the repeater is not connected.
-	 * 
-	 * @param {boolean} connected True if we are "connected"
-	 */
-	SetConnected(connected) {
-		for (let b of this.collection) {
-			b.SetConnected(connected)
-		}
-	}
-}
-
-export {AudioReady, Collection}

static/chart.html

@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html>
+    <head>
+        <title>Chart-O-Matic</title>
+        <script type="module" src="chart.mjs"></script>
+    </head>
+    <body>
+        <h1>The Amazing Chart-O-Matic</h1>
+        <canvas id="chart" style="border: solid black 1px; width: 100%;"></canvas>
+    </body>
+</html>

static/i18n/en.yaml

@@ -1,33 +0,0 @@
-title:
-    repeater: Repeater
-    mode: Mode
-    notes: Notes
-    knobs: Knobs
-key:
-    key: Key
-    dit: Dit
-    dah: Dah
-keyer:
-    cootie: Straight Key / Cootie
-    bug: Bug
-    elbug: Electronic Bug
-    singledot: Single Dot
-    ultimatic: Ultimatic
-    iambic: Iambic (plain)
-    iambica: Iambic A
-    iambicb: Iambic B
-    keyahead: Keyahea
-label:
-    wpm: WPM
-    ms: ms
-    wiki: Help
-    rx-delay: receive delay
-    telegraph-sounds: Telegraph sounds
-title:
-    discord: Text/Voice chat on Discord
-    wiki: Vail Wiki
-description:
-    ck: Send <code>CK</code> (check) to the repeater, and play when it comes back.
-    reset: Reset all Vail preferences to default.
-    notes: Enter your own notes here.
-

static/i18n/fr.yaml

@@ -1,32 +0,0 @@
-title:
-    repeater: Répéteur
-    mode: Mode
-    notes: Remarques
-    knobs: Réglages
-key:
-    key: Key
-    dit: Dit
-    dah: Dah
-keyer:
-    cootie: Straight Key / Cootie
-    bug: Bug
-    elbug: Electronic Bug
-    singledot: Single Dot
-    ultimatic: Ultimatic
-    iambic: Iambic (plain)
-    iambica: Iambic A
-    iambicb: Iambic B
-    keyahead: Keyahead
-label:
-    wpm: WPM
-    ms: ms
-    wiki: Help
-    rx-delay: retard de réception
-    telegraph-sounds: Sons télégraphiques
-title:
-    discord: Text/Voice chat on Discord
-    wiki: Vail Wiki
-description:
-    ck: Transmettre <code>CK</code> (check) au répéteur, et le jouer quand il arrive.
-    reset: Réinitialiser les paramètres par défaut.
-    notes: Écrivez vos nôtes ici.

static/index.html

@@ -11,17 +11,17 @@
 
 		<!-- Vail stuff -->
 		<link rel="manifest" href="manifest.json">
-		<link rel="icon" href="assets/vail.png" sizes="256x256" type="image/png">
+		<link rel="icon" href="vail.png" sizes="256x256" type="image/png">
-		<link rel="icon" href="assets/vail.svg" sizes="any" type="image/svg+xml">
+		<link rel="icon" href="vail.svg" sizes="any" type="image/svg+xml">
-		<script type="module" src="scripts/vail.mjs"></script>
+		<script type="module" src="vail.mjs"></script>
-		<script type="module" src="scripts/ui.mjs"></script>
+		<script type="module" src="ui.mjs"></script>
 		<link rel="stylesheet" href="vail.css">
 	</head>
 	<body>
 		<nav class="navbar is-dark">
 			<div class="navbar-brand">
 				<a class="navbar-item">
-					<img class="" src="assets/vail.svg" alt="">
+					<img class="" src="vail.svg" alt="">
 					<div class="block">Vail</div>
 				</a>
 			</div>
@@ -46,7 +46,7 @@
 							<div class="level-right">
 								<div class="level-item">
 									<!-- This appears as a little light that turns on when someone's sending -->
-									<span class="tag recv-lamp">
+									<span class="tag" id="recv">
 										<output class="has-text-info" id="note"></output>
 										<i class="mdi mdi-volume-off" id="muted"></i>
 									</span>

static/inputs.mjs

@@ -2,14 +2,9 @@ class Input {
 	constructor(keyer) {
 		this.keyer = keyer
 	}
-
 	SetDitDuration(delay) {
 		// Nothing
 	}
-
-	SetKeyerMode(mode) {
-		// Nothing
-	}
 }
 
 export class HTML extends Input{
@@ -53,7 +48,9 @@ export class Keyboard extends Input{
 		// Listen for keystrokes
 		document.addEventListener("keydown", e => this.keyboard(e))
 		document.addEventListener("keyup", e => this.keyboard(e))
-		window.addEventListener("blur", e => this.loseFocus(e))
+
+		// VBand: the keyboard input needs to know whether vband's "left" should be dit or straight
+		this.iambic = false
 	}
 
 	keyboard(event) {
@@ -101,28 +98,11 @@ export class Keyboard extends Input{
 			}
 		}
 	}
-
-	loseFocus(event) {
-		if (this.ditDown) {
-			this.keyer.Key(0, false)
-			this.ditDown = false
-		}
-		if (this.dahDown) {
-			this.keyer.Key(1, false)
-			this.dahDown = false
-		}
-		if (this.straightDown) {
-			this.keyer.key(2, false)
-			this.straightDown = false
-		}
-	}
 }
 
 export class MIDI extends Input{
 	constructor(keyer) {
 		super(keyer)
-		this.ditDuration = 100
-		this.keyerMode = 0
 
 		this.midiAccess = {outputs: []} // stub while we wait for async stuff
 		if (navigator.requestMIDIAccess) {
@@ -137,28 +117,12 @@ export class MIDI extends Input{
 		this.midiStateChange()
 	}
 
-	sendState() {
+	SetIntervalDuration(delay) {
+		// Send the Vail adapter the current iambic delay setting
 		for (let output of this.midiAccess.outputs.values()) {
-			// Turn off keyboard mode
+			// MIDI only supports 7-bit values, so we have to divide it by two
-			output.send([0xB0, 0x00, 0x00])
+			output.send([0x8B, 0x01, delay/2])
-
-			// MIDI only supports 7-bit values, so we have to divide ditduration by two
-			output.send([0xB0, 0x01, this.ditDuration/2])
-
-			// Send keyer mode
-			output.send([0xC0, this.keyerMode])
 		}
-
-	}
-
-	SetDitDuration(duration) {
-		this.ditDuration = duration
-		this.sendState()
-	}
-
-	SetKeyerMode(mode) {
-		this.keyerMode = mode
-		this.sendState()
 	}
 
 	midiStateChange(event) {
@@ -171,7 +135,9 @@ export class MIDI extends Input{
 		}
 
 		// Tell the Vail adapter to disable keyboard events: we can do MIDI!
-		this.sendState()
+		for (let output of this.midiAccess.outputs.values()) {
+			output.send([0x8B, 0x00, 0x00]) // Turn off keyboard mode
+		}
 	}
 
 	midiMessage(event) {
@@ -263,36 +229,16 @@ export class Gamepad extends Input{
 	}
 }
 
-class Collection {
+/**
-	constructor(keyer) {
+ * Set up all input methods
-		this.html =new HTML(keyer)
-		this.keyboard =new Keyboard(keyer)
-		this.midi =new MIDI(keyer)
-		this.gamepad =new Gamepad(keyer)
-		this.collection = [this.html, this.keyboard, this.midi, this.gamepad]
-	}
-
-	/**
-	 * Set duration of all inputs
  * 
-	 * @param duration Duration to set
+ * @param keyer Keyer object for everyone to use
  */
-	SetDitDuration(duration) {
+export function SetupAll(keyer) {
-		for (let e of this.collection) {
+	return {
-			e.SetDitDuration(duration)
+		HTML: new HTML(keyer),
-		}
+		Keyboard: new Keyboard(keyer),
-	}
+		MIDI: new MIDI(keyer),
-
+		Gamepad: new Gamepad(keyer),
-	/**
-	 * Set keyer mode of all inputs
-	 * 
-	 * @param mode Keyer mode to set
-	 */
-	SetKeyerMode(mode) {
-		for (let e of this.collection) {
-			e.SetKeyerMode(mode)
-		}
 	}
 }
-
-export {Collection}

static/keyers.mjs

@@ -53,17 +53,10 @@ class QSet extends Set {
 }
 
 /**
- * Definition of a transmitter type.
+ * A callback to start or stop transmission
  * 
- * The VailClient class implements this.
+ * @callback TxControl
  */
-class Transmitter {
-	/** Begin transmitting */
-	BeginTx() {}
-
-	/** End transmitting */
-	EndTx() {}
-}
 
 /**
  * A straight keyer.
@@ -74,10 +67,12 @@ class Transmitter {
 */
 class StraightKeyer {
 	/**
-	 * @param {Transmitter} output Transmitter object
+	 * @param {TxControl} beginTxFunc Callback to begin transmitting
+	 * @param {TxControl} endTxFunc Callback to end transmitting
 	 */
-	constructor(output) {
+	constructor(beginTxFunc, endTxFunc) {
-		this.output = output
+		this.beginTxFunc = beginTxFunc
+		this.endTxFunc = endTxFunc
 		this.Reset()
 	}
 
@@ -94,7 +89,7 @@ class StraightKeyer {
 	 * Reset state and stop all transmissions.
 	 */
 	 Reset() {
-		this.output.EndTx()
+		this.endTxFunc()
 		this.txRelays = []
 	}
 
@@ -145,9 +140,9 @@ class StraightKeyer {
 
 		if (wasClosed != nowClosed) {
 			if (nowClosed) {
-				this.output.BeginTx()
+				this.beginTxFunc()
 			} else {
-				this.output.EndTx()
+				this.endTxFunc()
 			}
 		}
 	}
@@ -476,19 +471,6 @@ const Keyers = {
 	robo: RoboKeyer.Keyer,
 }
 
-const Numbers = {
-	straight: 1,
-	cootie: 1,
-	bug: 2,
-	elbug: 3,
-	singledot: 4,
-	ultimatic: 5,
-	iambic: 6,
-	iambica: 7,
-	iambicb: 8,
-	keyahead: 9,
-}
-
 export {
-	Keyers, Numbers,
+	Keyers,
 }

static/manifest.json

@@ -7,7 +7,7 @@
   "theme_color": "#009688",
   "description": "Internet Morse Code client",
   "icons": [
-    {"src": "assets/vail.png", "sizes": "250x250"},
+    {"src": "vail.png", "sizes": "250x250"},
-    {"src": "assets/vail.svg", "sizes": "150x150"}
+    {"src": "vail.svg", "sizes": "150x150"}
   ]
 }

static/repeaters.mjs

@@ -0,0 +1,189 @@
+import {GetFortune} from "./fortunes.mjs"
+
+const Millisecond = 1
+const Second = 1000 * Millisecond
+const Minute = 60 * Second
+
+export class Vail {
+    constructor(rx, name) {
+        this.rx = rx
+        this.name = name
+        this.lagDurations = []
+        this.sent = []
+        this.wantConnected = true
+        
+		this.wsUrl = new URL("chat", window.location)
+		this.wsUrl.protocol = this.wsUrl.protocol.replace("http", "ws")
+        this.wsUrl.pathname = this.wsUrl.pathname.replace("testing/", "") // Allow staging deploys
+        this.wsUrl.searchParams.set("repeater", name)
+        
+        this.reopen()
+    }
+    
+    reopen() {
+        if (!this.wantConnected) {
+            return
+        }
+        console.info("Attempting to reconnect", this.wsUrl.href)
+        this.clockOffset = 0
+		this.socket = new WebSocket(this.wsUrl)
+		this.socket.addEventListener("message", e => this.wsMessage(e))
+		this.socket.addEventListener("close", () => this.reopen())
+    }
+
+    stats() {
+        return {
+            averageLag: this.lagDurations.reduce((a,b) => (a+b), 0) / this.lagDurations.length,
+            clockOffset: this.clockOffset,
+        }
+    }
+
+    wsMessage(event) {
+        let now = Date.now()
+        let jmsg = event.data
+        let msg
+        try {
+            msg = JSON.parse(jmsg)
+        }
+        catch (err) {
+            console.error(err, jmsg)
+            return
+        }
+
+        let beginTxTime = msg[0]
+        let durations = msg.slice(1)
+
+		// Why is this happening?
+		if (beginTxTime == 0) {
+			return
+        }
+        
+        let sent = this.sent.filter(e => e != jmsg)
+		if (sent.length < this.sent.length) {
+			// We're getting our own message back, which tells us our lag.
+			// We shouldn't emit a tone, though.
+			let totalDuration = durations.reduce((a, b) => a + b)
+            this.sent = sent
+            this.lagDurations.unshift(now - this.clockOffset - beginTxTime - totalDuration)
+            this.lagDurations.splice(20, 2)
+            this.rx(0, 0, this.stats())
+			return
+		}
+
+        // The very first packet is the server telling us the current time
+		if (durations.length == 0) {
+			if (this.clockOffset == 0) {
+                this.clockOffset = now - beginTxTime
+                this.rx(0, 0, this.stats())
+			}
+			return
+		}
+
+		// Adjust playback time to clock offset
+        let adjustedTxTime = beginTxTime + this.clockOffset
+
+		// Every second value is a silence duration
+		let tx = true
+		for (let duration of durations) {
+			duration = Number(duration)
+			if (tx && (duration > 0)) {
+                this.rx(adjustedTxTime, duration, this.stats())
+			}
+			adjustedTxTime = Number(adjustedTxTime) + duration
+			tx = !tx
+		}
+    }
+
+    /**
+     * Send a transmission
+     * 
+     * @param {number} time When to play this transmission
+     * @param {number} duration How long the transmission is
+     * @param {boolean} squelch True to mute this tone when we get it back from the repeater
+     */
+    Transmit(time, duration, squelch=true) {
+        let msg = [time - this.clockOffset, duration]
+        let jmsg = JSON.stringify(msg)
+        if (this.socket.readyState != 1) {
+            // If we aren't connected, complain.
+            console.error("Not connected, dropping", jmsg)
+            return
+        }
+        this.socket.send(jmsg)
+        if (squelch) {
+            this.sent.push(jmsg)
+        }
+    }
+
+    Close() {
+        this.wantConnected = false
+        this.socket.close()
+    }
+}
+
+export class Null {
+    constructor(rx) {
+        this.rx = rx
+        this.interval = setInterval(() => this.pulse(), 3 * Second)
+    }
+
+    pulse() {
+        this.rx(0, 0, {note: "local"})
+    }
+
+    Transmit(time, duration, squelch=true) {
+    }
+
+    Close() {
+        clearInterval(this.interval)
+    }
+}
+
+export class Echo {
+    constructor(rx, delay=0) {
+        this.rx = rx
+        this.delay = delay
+        this.Transmit(0, 0)
+    }
+
+    Transmit(time, duration, squelch=true) {
+        this.rx(time + this.delay, duration, {note: "local"})
+    }
+
+    Close() {
+    }
+}
+
+export class Fortune {
+    /**
+     * 
+     * @param rx Receive callback
+     * @param {Keyer} keyer Keyer object
+     */
+    constructor(rx, keyer) {
+        this.rx = rx
+        this.keyer = keyer
+
+        this.interval = setInterval(() => this.pulse(), 1 * Minute)
+        this.pulse()
+    }
+
+    pulse() {
+        this.rx(0, 0, {note: "local"})
+        if (this.keyer.Busy()) {
+            return
+        }
+
+        let fortune = GetFortune()
+        this.keyer.EnqueueAsciiString(`${fortune}\x04    `)
+    }
+
+    Transmit(time, duration, squelch=true) {
+        // Do nothing.
+    }
+
+    Close() {
+        this.keyer.Flush()
+        clearInterval(this.interval)
+    }
+}

static/scripts/repeaters.mjs

@@ -1,229 +0,0 @@
-import {GetFortune} from "./fortunes.mjs"
-
-const Millisecond = 1
-const Second = 1000 * Millisecond
-const Minute = 60 * Second
-
-/**
- * Compare two messages
- * 
- * @param {Object} m1 First message
- * @param {Object} m2 Second message
- * @returns {Boolean} true if messages are equal
- */
-function MessageEqual(m1, m2) {
-    if ((m1.Timestamp != m2.Timestamp) || (m1.Duration.length != m2.Duration.length)) {
-        return false
-    }
-    for (let i=0; i < m1.Duration.length; i++) {
-        if (m1.Duration[i] != m2.Duration[i]) {
-            return false
-        }
-    }
-    return true    
-}
-
-export class Vail {
-    constructor(rx, name) {
-        this.rx = rx
-        this.name = name
-        this.lagDurations = []
-        this.sent = []
-        this.wantConnected = true
-        this.connected = false
-        
-		this.wsUrl = new URL("chat", window.location)
-		this.wsUrl.protocol = this.wsUrl.protocol.replace("http", "ws")
-        this.wsUrl.pathname = this.wsUrl.pathname.replace("testing/", "") // Allow staging deploys
-        this.wsUrl.searchParams.set("repeater", name)
-        
-        this.reopen()
-    }
-    
-    reopen() {
-        if (!this.wantConnected) {
-            return
-        }
-        this.rx(0, 0, {connected: false})
-        console.info("Attempting to reconnect", this.wsUrl.href)
-        this.clockOffset = 0
-		this.socket = new WebSocket(this.wsUrl, ["json.vail.woozle.org"])
-		this.socket.addEventListener("message", e => this.wsMessage(e))
-        this.socket.addEventListener(
-            "open",
-            msg => {
-                this.connected = true
-                this.rx(0, 0, {connected: true, notice: "Repeater connected"})
-            }
-        )
-		this.socket.addEventListener(
-            "close",
-            msg => {
-                this.rx(0, 0, {connected: false, notice: `Repeater disconnected: ${msg.reason}`})
-                console.error("Repeater connection dropped:", msg.reason)
-                setTimeout(() => this.reopen(), 2*Second)
-            }
-        )
-    }
-
-    wsMessage(event) {
-        let now = Date.now()
-        let jmsg = event.data
-        let msg
-        try {
-            msg = JSON.parse(jmsg)
-        }
-        catch (err) {
-            console.error(err, jmsg)
-            return
-        }
-        let stats = {
-            averageLag: this.lagDurations.reduce((a,b) => (a+b), 0) / this.lagDurations.length,
-            clockOffset: this.clockOffset,
-            clients: msg.Clients,
-            connected: this.connected,
-        }
-
-		// XXX: Why is this happening?
-		if (msg.Timestamp == 0) {
-            console.debug("Got timestamp=0", msg)
-			return
-        }
-        
-        let sent = this.sent.filter(m => !MessageEqual(msg, m))
-		if (sent.length < this.sent.length) {
-			// We're getting our own message back, which tells us our lag.
-			// We shouldn't emit a tone, though.
-			let totalDuration = msg.Duration.reduce((a, b) => a + b)
-            this.sent = sent
-            this.lagDurations.unshift(now - this.clockOffset - msg.Timestamp - totalDuration)
-            this.lagDurations.splice(20, 2)
-            this.rx(0, 0, stats)
-			return
-		}
-
-        // Packets with 0 length tell us what time the server thinks it is,
-        // and how many clients are connected
-		if (msg.Duration.length == 0) {
-            this.clockOffset = now - msg.Timestamp
-            this.rx(0, 0, stats)
-			return
-		}
-
-		// Adjust playback time to clock offset
-        let adjustedTxTime = msg.Timestamp + this.clockOffset
-
-		// Every second value is a silence duration
-		let tx = true
-		for (let duration of msg.Duration) {
-			duration = Number(duration)
-			if (tx && (duration > 0)) {
-                this.rx(adjustedTxTime, duration, stats)
-			}
-			adjustedTxTime = Number(adjustedTxTime) + duration
-			tx = !tx
-		}
-    }
-
-    /**
-     * Send a transmission
-     * 
-     * @param {number} timestamp When to play this transmission
-     * @param {number} duration How long the transmission is
-     * @param {boolean} squelch True to mute this tone when we get it back from the repeater
-     */
-    Transmit(timestamp, duration, squelch=true) {
-        let msg = {
-            Timestamp: timestamp,
-            Duration: [duration],
-        }
-        let jmsg = JSON.stringify(msg)
-
-        if (this.socket.readyState != 1) {
-            // If we aren't connected, complain.
-            console.error("Not connected, dropping", jmsg)
-            return
-        }
-        this.socket.send(jmsg)
-        if (squelch) {
-            this.sent.push(msg)
-        }
-    }
-
-    Close() {
-        this.wantConnected = false
-        this.socket.close()
-    }
-}
-
-export class Null {
-    constructor(rx, interval=3*Second) {
-        this.rx = rx
-        this.init()
-    }
-
-    notice(msg) {
-        this.rx(0, 0, {connected: false, notice: msg})
-    }
-
-    init() {
-        this.notice("Null repeater: nobody will hear you.")
-    }
-
-    Transmit(time, duration, squelch=true) {}
-
-    Close() {}
-}
-
-export class Echo extends Null {
-    constructor(rx, delay=0) {
-        super(rx)
-        this.delay = delay
-    }
-
-    init () {
-        this.notice("Echo repeater: you can only hear yourself.")
-    }
-
-    Transmit(time, duration, squelch=true) {
-        this.rx(time + this.delay, duration, {note: "local"})
-    }
-}
-
-export class Fortune extends Null {
-    /**
-     * 
-     * @param rx Receive callback
-     * @param {Keyer} keyer Robokeyer
-     */
-    constructor(rx, keyer) {
-        super(rx)
-        this.keyer = keyer
-    }
-
-    init() {
-        this.notice("Say something, and I will tell you your fortune.")
-    }
-
-    pulse() {
-        this.timeout = null
-        if (!this.keyer || this.keyer.Busy()) {
-            return
-        }
-
-        let fortune = GetFortune()
-        this.keyer.EnqueueAsciiString(`${fortune} \x04    `)
-    }
-
-    Transmit(time, duration, squelch=true) {
-        if (this.timeout) {
-            clearTimeout(this.timeout)
-        }
-        this.timeout = setTimeout(() => this.pulse(), 3 * Second)
-    }
-
-    Close() {
-        this.keyer.Flush()
-        super.Close()
-    }
-}

static/vail.css

@@ -16,18 +16,8 @@
 	-webkit-user-select: none; /* 2022-04-26 Safari still needs this */  
 }
 
-.tag.recv-lamp {
+#recv.rx {
-	background-color: #444;
-	color: white;
-}
-.tag.recv-lamp.connected {
-	background-color: #fec;
-	color: black;
-}
-.tag.recv-lamp.rx,
-.tag.recv-lamp.connected.rx {
 	background-color: orange;
-	color: black;
 }
 
 input[type=range] {

static/vail.mjs

@@ -1,5 +1,5 @@
-import * as Keyers from "./keyers.mjs"
+import {Keyers} from "./keyers.mjs"
-import * as Outputs from "./outputs.mjs"
+import * as Buzzer from "./buzzer.mjs"
 import * as Inputs from "./inputs.mjs"
 import * as Repeaters from "./repeaters.mjs"
 import * as Chart from "./chart.mjs"
@@ -10,7 +10,7 @@ const Second = 1000 * Millisecond
 const Minute = 60 * Second
 
 /**
- * Pop up a message, using an notification.
+ * Pop up a message, using an notification..
  * 
  * @param {string} msg Message to display
  */
@@ -37,24 +37,23 @@ class VailClient {
 		this.rxDelay = 0 * Millisecond // Time to add to incoming timestamps
 		this.beginTxTime = null // Time when we began transmitting
 
-		// Outputs
+		// Make helpers
-		this.outputs = new Outputs.Collection()
+		this.lamp = new Buzzer.Lamp(document.querySelector("#recv"))
-
+		this.buzzer = new Buzzer.ToneBuzzer()
-		// Keyers
+		this.straightKeyer = new Keyers.straight(() => this.beginTx(), () => this.endTx())
-		this.straightKeyer = new Keyers.Keyers.straight(this)
+		this.keyer = new Keyers.straight(() => this.beginTx(), () => this.endTx())
-		this.keyer = new Keyers.Keyers.straight(this)
+		this.roboKeyer = new Keyers.robo(() => this.Buzz(), () => this.Silence())
-		this.roboKeyer = new Keyers.Keyers.robo(() => this.Buzz(), () => this.Silence())
 
 		// Set up various input methods
 		// Send this as the keyer so we can intercept dit and dah events for charts
-		this.inputs = new Inputs.Collection(this)
+		this.inputs = Inputs.SetupAll(this)
 
 		// Maximize button
 		for (let e of document.querySelectorAll("button.maximize")) {
 			e.addEventListener("click", e => this.maximize(e))
 		}
 		for (let e of document.querySelectorAll("#ck")) {
-			e.addEventListener("click", e => this.check())
+			e.addEventListener("click", e => this.test())
 		}
 		for (let e of document.querySelectorAll("#reset")) {
 			e.addEventListener("click", e => this.reset())
@@ -70,7 +69,9 @@ class VailClient {
 			}
 			this.keyer.SetDitDuration(this.ditDuration)
 			this.roboKeyer.SetDitDuration(this.ditDuration)
-			this.inputs.SetDitDuration(this.ditDuration)
+			for (let i of Object.values(this.inputs)) {
+				i.SetDitDuration(this.ditDuration)
+			}
 		})
 		this.inputInit("#rx-delay", e => { 
 			this.rxDelay = e.target.value * Second
@@ -88,7 +89,7 @@ class VailClient {
 		this.setTimingCharts(true)
 
 		// Turn off the "muted" symbol when we can start making noise
-		Outputs.AudioReady()
+		Buzzer.Ready()
 		.then(() => {
 			console.log("Audio context ready")
 			document.querySelector("#muted").classList.add("is-hidden")
@@ -116,13 +117,12 @@ class VailClient {
 	}
 
 	setKeyer(keyerName) {
-		let newKeyerClass = Keyers.Keyers[keyerName]
+		let newKeyerClass = Keyers[keyerName]
-		let newKeyerNumber = Keyers.Numbers[keyerName]
 		if (!newKeyerClass) {
 			console.error("Keyer not found", keyerName)
 			return
 		}
-		let newKeyer = new newKeyerClass(this)
+		let newKeyer = new newKeyerClass(() => this.beginTx(), () => this.endTx())
 		let i = 0
 		for (let keyName of newKeyer.KeyNames()) {
 			let e = document.querySelector(`.key[data-key="${i}"]`)
@@ -132,23 +132,24 @@ class VailClient {
 		this.keyer.Release()
 		this.keyer = newKeyer
 
-		this.inputs.SetKeyerMode(newKeyerNumber)
-
 		document.querySelector("#keyer-rate").dispatchEvent(new Event("input"))
 	}
 
 	Buzz() {
-		this.outputs.Buzz(false)
+		this.buzzer.Buzz()
+		this.lamp.Buzz()
 		if (this.rxChart) this.rxChart.Set(1)
 	}
 
 	Silence() {
-		this.outputs.Silence()
+		this.buzzer.Silence()
+		this.lamp.Silence()
 		if (this.rxChart) this.rxChart.Set(0)
 	}
 
 	BuzzDuration(tx, when, duration) {
-		this.outputs.BuzzDuration(tx, when, duration)
+		this.buzzer.BuzzDuration(tx, when, duration)
+		this.lamp.BuzzDuration(tx, when, duration)
 
 		let chart = tx?this.txChart:this.rxChart
 		if (chart) {
@@ -162,11 +163,10 @@ class VailClient {
 	 * 
 	 * Called from the keyer.
 	 */
-	 BeginTx() {
+	 beginTx() {
 		this.beginTxTime = Date.now()
-		this.outputs.Buzz(true)
+		this.buzzer.Buzz(true)
 		if (this.txChart) this.txChart.Set(1)
-
 	}
 
 	/**
@@ -174,13 +174,13 @@ class VailClient {
 	 * 
 	 * Called from the keyer
 	 */
-	EndTx() {
+	endTx() {
 		if (!this.beginTxTime) {
 			return
 		}
 		let endTxTime = Date.now()
 		let duration = endTxTime - this.beginTxTime
-		this.outputs.Silence(true)
+		this.buzzer.Silence(true)
 		this.repeater.Transmit(this.beginTxTime, duration)
 		this.beginTxTime = null
 		if (this.txChart) this.txChart.Set(0)
@@ -222,10 +222,10 @@ class VailClient {
 	 */
 	setTelegraphBuzzer(enable) {
 		if (enable) {
-			this.outputs.SetAudioType("telegraph")
+			this.buzzer = new Buzzer.TelegraphBuzzer()
 			toast("Telegraphs only make sound when receiving!")
 		} else {
-			this.outputs.SetAudioType()
+			this.buzzer = new Buzzer.ToneBuzzer()
 		}
 	}
 
@@ -291,6 +291,8 @@ class VailClient {
 		} else {
 			this.repeater = new Repeaters.Vail(rx, name)
 		}
+
+		toast(`Now using repeater: ${name}`)
 	}
 
 	/**
@@ -341,7 +343,7 @@ class VailClient {
 	 */
 	error(msg) {
 		toast(msg)
-		this.outputs.Error()
+		this.buzzer.Error()
 	}
 
 	/**
@@ -369,18 +371,11 @@ class VailClient {
 			this.rxDurations.splice(20, 2)
 		}
 
-		if (stats.notice) {
-			toast(stats.notice)
-		}
-
 		let averageLag = (stats.averageLag || 0).toFixed(2)
 		let longestRxDuration = this.rxDurations.reduce((a,b) => Math.max(a,b))
 		let suggestedDelay = ((averageLag + longestRxDuration) * 1.2).toFixed(0)
 
-		if (stats.connected !== undefined) {
+		this.updateReading("#note", stats.note || "☁")
-			this.outputs.SetConnected(stats.connected)
-		}
-		this.updateReading("#note", stats.note || stats.clients || "😎")
 		this.updateReading("#lag-value", averageLag)
 		this.updateReading("#longest-rx-value", longestRxDuration)
 		this.updateReading("#suggested-delay-value", suggestedDelay)
@@ -421,7 +416,7 @@ class VailClient {
 	/**
 	  * Send "CK" to server, and don't squelch the echo
 	  */
-	 check() {
+	 test() {
 		let when = Date.now()
 		let dit = this.ditDuration
 		let dah = dit * 3