\n \n \n \n\n","label",[178,68],"frontend","pulls","branches","forks","envVars",{"_186":26,"_188":26},"connections",{"_186":26,"_187":26},"count","unfilledCount","emptyCount",{"_33":264,"_13":178,"_66":170,"_43":-5,"_35":36,"_171":40,"_172":96,"_37":265,"_39":26,"_69":261,"_174":-5,"_70":24,"_176":-5,"_205":266,"_17":267},{"_33":259,"_13":258,"_66":252,"_43":170,"_35":36,"_171":40,"_172":96,"_37":260,"_39":26,"_69":261,"_174":-5,"_70":24,"_176":-5,"_205":262,"_17":263},{"_33":249,"_13":250,"_66":251,"_43":252,"_35":36,"_171":253,"_172":96,"_37":254,"_39":40,"_69":220,"_174":255,"_70":24,"_176":-5,"_205":256,"_17":257},{"_33":241,"_13":242,"_66":243,"_43":170,"_35":36,"_171":244,"_172":96,"_37":245,"_39":40,"_69":21,"_174":246,"_70":24,"_176":-5,"_205":247,"_17":248},{"_33":169,"_13":68,"_66":67,"_43":170,"_35":36,"_171":76,"_172":96,"_37":238,"_39":40,"_69":21,"_174":175,"_70":24,"_176":-5,"_205":239,"_17":240},{"_33":231,"_13":232,"_66":233,"_43":170,"_35":36,"_171":40,"_172":96,"_37":234,"_39":26,"_69":220,"_174":235,"_70":24,"_176":-5,"_205":236,"_17":237},{"_33":224,"_13":225,"_66":226,"_43":170,"_35":36,"_171":40,"_172":96,"_37":227,"_39":26,"_69":21,"_174":228,"_70":24,"_176":-5,"_205":229,"_17":230},{"_33":215,"_13":216,"_66":217,"_43":170,"_35":36,"_171":218,"_172":96,"_37":219,"_39":26,"_69":220,"_174":221,"_70":24,"_176":-5,"_205":222,"_17":223},{"_33":208,"_13":209,"_66":210,"_43":-5,"_35":36,"_171":119,"_172":96,"_37":211,"_39":40,"_69":21,"_174":212,"_70":24,"_176":-5,"_205":213,"_17":214},{"_33":199,"_13":200,"_66":94,"_43":-5,"_35":36,"_171":201,"_172":96,"_37":202,"_39":40,"_69":203,"_174":204,"_70":24,"_176":-5,"_205":206,"_17":207},"51f2d606-3985-11f1-b5eb-42b51c65c3df","index.ts",2,["D",1776338019322],"http","import { serveFile } from \"https://esm.town/v/std/utils/index.ts\";\nimport { parseVal } from \"https://esm.town/v/std/utils/index.ts\";\nimport { Hono } from \"npm:hono\";\n\nconst app = new Hono();\n\n// ─── In-memory signaling state ───────────────────────────────────\n\ntype Client = {\n id: string;\n controller: ReadableStreamDefaultController;\n};\n\n// roomId -> list of connected SSE clients\nconst rooms = new Map();\n\nfunction sendToClient(client: Client, event: string, data: unknown) {\n try {\n client.controller.enqueue(\n new TextEncoder().encode(`event: ${event}\\ndata: ${JSON.stringify(data)}\\n\\n`),\n );\n } catch {\n // client disconnected\n }\n}\n\n// ─── API routes ──────────────────────────────────────────────────\n\n// SSE: join a room and listen for signaling messages\napp.get(\"/api/room/:roomId/events\", (c) => {\n const roomId = c.req.param(\"roomId\");\n const clientId = c.req.query(\"clientId\");\n if (!clientId) return c.text(\"clientId required\", 400);\n\n const stream = new ReadableStream({\n start(controller) {\n const client: Client = { id: clientId, controller };\n\n if (!rooms.has(roomId)) rooms.set(roomId, []);\n const room = rooms.get(roomId)!;\n\n // Tell the new peer about existing peers\n const existingPeerIds = room.map((c) => c.id);\n sendToClient(client, \"peers\", { peers: existingPeerIds });\n\n // Tell existing peers someone joined\n for (const peer of room) {\n sendToClient(peer, \"peer-joined\", { peerId: clientId });\n }\n\n room.push(client);\n console.log(`[room:${roomId}] ${clientId} joined (${room.length} peers)`);\n\n // Cleanup on disconnect — poll since we can't listen for abort\n const interval = setInterval(() => {\n try {\n // Try to send a comment (SSE keepalive)\n controller.enqueue(new TextEncoder().encode(\": keepalive\\n\\n\"));\n } catch {\n clearInterval(interval);\n const room = rooms.get(roomId);\n if (room) {\n const idx = room.findIndex((c) => c.id === clientId);\n if (idx !== -1) room.splice(idx, 1);\n for (const peer of room) {\n sendToClient(peer, \"peer-left\", { peerId: clientId });\n }\n if (room.length === 0) rooms.delete(roomId);\n console.log(`[room:${roomId}] ${clientId} left (${room.length} peers)`);\n }\n }\n }, 5000);\n },\n });\n\n return new Response(stream, {\n headers: {\n \"Content-Type\": \"text/event-stream\",\n \"Cache-Control\": \"no-cache\",\n Connection: \"keep-alive\",\n },\n });\n});\n\n// POST signaling messages (offer, answer, ice-candidate) to a specific peer\napp.post(\"/api/room/:roomId/signal\", async (c) => {\n const roomId = c.req.param(\"roomId\");\n const body = await c.req.json();\n const { from, to, type, data } = body;\n\n const room = rooms.get(roomId);\n if (!room) return c.json({ error: \"room not found\" }, 404);\n\n const target = room.find((c) => c.id === to);\n if (!target) return c.json({ error: \"peer not found\" }, 404);\n\n sendToClient(target, \"signal\", { from, type, data });\n return c.json({ ok: true });\n});\n\n// Room info\napp.get(\"/api/room/:roomId/info\", (c) => {\n const roomId = c.req.param(\"roomId\");\n const room = rooms.get(roomId) || [];\n return c.json({ roomId, peers: room.length });\n});\n\n// View source\napp.get(\"/source\", (c) => c.redirect(parseVal().links.self.val));\n\n// ─── Static files ────────────────────────────────────────────────\n\napp.get(\"/\", () => serveFile(\"/frontend/index.html\"));\napp.get(\"/frontend/**/*\", (c) => serveFile(c.req.path));\n\napp.onError((err) => Promise.reject(err));\n\nexport default app.fetch;\n","children",[],[200],"859f584e-3985-11f1-ab17-42b51c65c3df","README.md","019d95fc-73ea-733f-8112-f8caa1731e61",["D",1776338106024],"# 📹 Web-Native Video Chat\n\nPeer-to-peer video calls with **zero npm dependencies** on the client. Just native browser APIs:\n\n- **WebRTC** — peer-to-peer video/audio streaming\n- **Server-Sent Events (SSE)** — real-time signaling\n- **`getUserMedia`** — camera/mic access\n\nVal Town acts as a lightweight signaling server to help browsers find each other. Once connected, all video flows directly between peers.\n\n## Architecture\n\n```mermaid\nsequenceDiagram\n participant A as Browser A\n participant S as Val Town (SSE Signaling)\n participant B as Browser B\n\n A->>S: GET /api/room/:id/events (SSE)\n B->>S: GET /api/room/:id/events (SSE)\n S-->>B: event: peer-joined\n B->>S: POST /api/room/:id/signal (offer)\n S-->>A: event: signal (offer)\n A->>S: POST /api/room/:id/signal (answer)\n S-->>B: event: signal (answer)\n Note over A,B: ICE candidates exchanged similarly\n A<-->B: WebRTC P2P video stream 🎥\n```\n\n## How it works\n\n1. **Lobby** — enter a room name (or get a random one) and click Join\n2. **Signaling** — the server brokers WebRTC offers/answers/ICE candidates via SSE\n3. **P2P connection** — once established, video streams directly between browsers\n4. **Share the link** — copy the invite URL for others to join the same room\n\n## Files\n\n- `index.ts` — Hono server with SSE signaling endpoints + static file serving\n- `frontend/webrtc.ts` — WebRTC + SSE signaling client (plain TypeScript, no framework)\n- `frontend/components/App.tsx` — React UI for lobby + video grid + controls\n",[],[209],"62605d24-3985-11f1-b5eb-42b51c65c3df","webrtc.ts","62605e00-3985-11f1-b5eb-42b51c65c3df",4,["D",1776338046884],"script","// WebRTC + SSE signaling client — zero external dependencies\n// This is a plain-JS module (no React) so the logic is reusable.\n\nconst ICE_SERVERS = [\n { urls: \"stun:stun.l.google.com:19302\" },\n { urls: \"stun:stun1.l.google.com:19302\" },\n];\n\nexport type PeerState = {\n id: string;\n connection: RTCPeerConnection;\n stream: MediaStream | null;\n};\n\nexport type RoomCallbacks = {\n onPeerStream: (peerId: string, stream: MediaStream) => void;\n onPeerLeft: (peerId: string) => void;\n onError: (err: string) => void;\n};\n\nexport class RoomClient {\n roomId: string;\n clientId: string;\n localStream: MediaStream;\n peers: Map = new Map();\n eventSource: EventSource | null = null;\n callbacks: RoomCallbacks;\n\n constructor(\n roomId: string,\n clientId: string,\n localStream: MediaStream,\n callbacks: RoomCallbacks,\n ) {\n this.roomId = roomId;\n this.clientId = clientId;\n this.localStream = localStream;\n this.callbacks = callbacks;\n }\n\n connect() {\n const url = `/api/room/${this.roomId}/events?clientId=${this.clientId}`;\n this.eventSource = new EventSource(url);\n\n this.eventSource.addEventListener(\"peers\", (e) => {\n const { peers } = JSON.parse(e.data);\n // We are the new joiner — create offers to all existing peers\n for (const peerId of peers) {\n this.createPeerConnection(peerId, true);\n }\n });\n\n this.eventSource.addEventListener(\"peer-joined\", (e) => {\n const { peerId } = JSON.parse(e.data);\n // New peer joined — they will send us an offer, so just wait\n // (they got us in their \"peers\" list and will initiate)\n });\n\n this.eventSource.addEventListener(\"peer-left\", (e) => {\n const { peerId } = JSON.parse(e.data);\n this.removePeer(peerId);\n this.callbacks.onPeerLeft(peerId);\n });\n\n this.eventSource.addEventListener(\"signal\", (e) => {\n const { from, type, data } = JSON.parse(e.data);\n this.handleSignal(from, type, data);\n });\n\n this.eventSource.onerror = () => {\n this.callbacks.onError(\"SSE connection lost — try refreshing\");\n };\n }\n\n private createPeerConnection(peerId: string, initiator: boolean) {\n if (this.peers.has(peerId)) return;\n\n const pc = new RTCPeerConnection({ iceServers: ICE_SERVERS });\n this.peers.set(peerId, pc);\n\n // Add our local tracks\n for (const track of this.localStream.getTracks()) {\n pc.addTrack(track, this.localStream);\n }\n\n // When we get remote tracks\n pc.ontrack = (e) => {\n if (e.streams[0]) {\n this.callbacks.onPeerStream(peerId, e.streams[0]);\n }\n };\n\n // Send ICE candidates\n pc.onicecandidate = (e) => {\n if (e.candidate) {\n this.signal(peerId, \"ice-candidate\", e.candidate);\n }\n };\n\n pc.onconnectionstatechange = () => {\n if (pc.connectionState === \"failed\" || pc.connectionState === \"disconnected\") {\n this.removePeer(peerId);\n this.callbacks.onPeerLeft(peerId);\n }\n };\n\n // If we're the initiator, create and send an offer\n if (initiator) {\n pc.createOffer()\n .then((offer) => pc.setLocalDescription(offer))\n .then(() => {\n this.signal(peerId, \"offer\", pc.localDescription);\n })\n .catch((err) => this.callbacks.onError(`Offer failed: ${err.message}`));\n }\n\n return pc;\n }\n\n private async handleSignal(from: string, type: string, data: any) {\n if (type === \"offer\") {\n // Someone sent us an offer — create our side and send answer\n this.createPeerConnection(from, false);\n const pc = this.peers.get(from)!;\n await pc.setRemoteDescription(new RTCSessionDescription(data));\n const answer = await pc.createAnswer();\n await pc.setLocalDescription(answer);\n this.signal(from, \"answer\", pc.localDescription);\n } else if (type === \"answer\") {\n const pc = this.peers.get(from);\n if (pc) await pc.setRemoteDescription(new RTCSessionDescription(data));\n } else if (type === \"ice-candidate\") {\n const pc = this.peers.get(from);\n if (pc) {\n try {\n await pc.addIceCandidate(new RTCIceCandidate(data));\n } catch {\n // ignore late candidates\n }\n }\n }\n }\n\n private signal(to: string, type: string, data: any) {\n fetch(`/api/room/${this.roomId}/signal`, {\n method: \"POST\",\n headers: { \"Content-Type\": \"application/json\" },\n body: JSON.stringify({ from: this.clientId, to, type, data }),\n }).catch(() => {});\n }\n\n private removePeer(peerId: string) {\n const pc = this.peers.get(peerId);\n if (pc) {\n pc.close();\n this.peers.delete(peerId);\n }\n }\n\n disconnect() {\n this.eventSource?.close();\n for (const [id, pc] of this.peers) {\n pc.close();\n }\n this.peers.clear();\n }\n}\n",[],[178,216],"e8f60f1a-3984-11f1-ab80-42b51c65c3df","style.css","019d95fc-73ea-733f-8112-f0c196d5f37d",["D",1776337843007],"body {\n font-family: -apple-system, Arial, sans-serif;\n color: #333;\n padding: 20px;\n}\n\nbutton {\n background-color: #4a90e2;\n color: white;\n border: none;\n padding: 8px 16px;\n border-radius: 4px;\n cursor: pointer;\n}\n\nbutton:hover {\n background-color: #357ae8;\n}",[],[178,225],"e8f60b46-3984-11f1-ab80-42b51c65c3df","index.tsx","019d95fc-73ea-733f-8112-ed6d6dacdef2",["D",1776337843007],"/** @jsxImportSource https://esm.sh/react@18.2.0 */\nimport { createRoot } from \"https://esm.sh/react-dom@18.2.0/client\";\nimport { App } from \"./components/App.tsx\";\n\nconst root = document.getElementById(\"root\");\nif (!root) {\n throw new Error(\"No root element found\");\n}\n\ncreateRoot(root).render();",[],[178,232],["D",1776338024399],[],[178,68],"789e952e-3985-11f1-8b11-42b51c65c3df","favicon.svg","019d95fc-73ea-733f-8112-e4ead7373891",6,["D",1776338084214],"\n",[],[178,242],"75f6069a-3985-11f1-b5eb-42b51c65c3df","App.tsx","019d95fc-73ea-733f-8112-de225c091646","019d95fc-73ea-733f-8112-e3d675782b43",5,["D",1776338079753],"/** @jsxImportSource https://esm.sh/react@18.2.0 */\nimport { useCallback, useEffect, useRef, useState } from \"https://esm.sh/react@18.2.0\";\nimport { RoomClient } from \"../webrtc.ts\";\n\nfunction generateId() {\n return Math.random().toString(36).slice(2, 8);\n}\n\nfunction getRoomFromHash() {\n return location.hash.slice(1) || \"\";\n}\n\nexport function App() {\n const [roomId, setRoomId] = useState(getRoomFromHash);\n const [joined, setJoined] = useState(false);\n const [error, setError] = useState(\"\");\n const [peerStreams, setPeerStreams] = useState>(new Map());\n const [localStream, setLocalStream] = useState(null);\n const [muted, setMuted] = useState(false);\n const [videoOff, setVideoOff] = useState(false);\n\n const localVideoRef = useRef(null);\n const clientRef = useRef(null);\n const clientIdRef = useRef(generateId());\n\n // Create or join a room\n const joinRoom = useCallback(async () => {\n setError(\"\");\n const room = roomId.trim() || generateId();\n setRoomId(room);\n location.hash = room;\n\n try {\n const stream = await navigator.mediaDevices.getUserMedia({\n video: true,\n audio: true,\n });\n setLocalStream(stream);\n\n if (localVideoRef.current) {\n localVideoRef.current.srcObject = stream;\n }\n\n const client = new RoomClient(room, clientIdRef.current, stream, {\n onPeerStream: (peerId, peerStream) => {\n setPeerStreams((prev) => {\n const next = new Map(prev);\n next.set(peerId, peerStream);\n return next;\n });\n },\n onPeerLeft: (peerId) => {\n setPeerStreams((prev) => {\n const next = new Map(prev);\n next.delete(peerId);\n return next;\n });\n },\n onError: (msg) => setError(msg),\n });\n\n client.connect();\n clientRef.current = client;\n setJoined(true);\n } catch (err: any) {\n setError(err.message || \"Could not access camera/mic\");\n }\n }, [roomId]);\n\n const leaveRoom = useCallback(() => {\n clientRef.current?.disconnect();\n clientRef.current = null;\n localStream?.getTracks().forEach((t) => t.stop());\n setLocalStream(null);\n setPeerStreams(new Map());\n setJoined(false);\n location.hash = \"\";\n }, [localStream]);\n\n const toggleMute = () => {\n if (!localStream) return;\n const audioTrack = localStream.getAudioTracks()[0];\n if (audioTrack) {\n audioTrack.enabled = !audioTrack.enabled;\n setMuted(!audioTrack.enabled);\n }\n };\n\n const toggleVideo = () => {\n if (!localStream) return;\n const videoTrack = localStream.getVideoTracks()[0];\n if (videoTrack) {\n videoTrack.enabled = !videoTrack.enabled;\n setVideoOff(!videoTrack.enabled);\n }\n };\n\n // Cleanup on unmount\n useEffect(() => {\n return () => {\n clientRef.current?.disconnect();\n localStream?.getTracks().forEach((t) => t.stop());\n };\n }, []);\n\n const totalVideos = 1 + peerStreams.size;\n const gridCols = totalVideos <= 1\n ? \"grid-cols-1\"\n : totalVideos <= 4\n ? \"grid-cols-2\"\n : \"grid-cols-3\";\n\n // ─── Lobby ──────────────────────────────────\n if (!joined) {\n return (\n

📹 Video Chat

\n Peer-to-peer video calls. No signups, no downloads, zero dependencies.\n WebRTC + SSE signaling on Val Town.\n

\n\n

\n setRoomId(e.target.value)}\n onKeyDown={(e: any) => e.key === \"Enter\" && joinRoom()}\n class=\"flex-1 bg-gray-800 border border-gray-700 rounded-lg px-4 py-3 text-white placeholder-gray-500 focus:outline-none focus:border-blue-500\"\n />\n \n Join\n \n

\n\n {error &&

{error}

}\n\n \n view source\n \n

\n );\n }\n\n // ─── In-call ────────────────────────────────\n return (\n

\n {/* Header */}\n

\n Room:\n {roomId}\n \n {peerStreams.size} peer{peerStreams.size !== 1 ? \"s\" : \"\"} connected\n \n

\n \n

\n\n {error && (\n

{error}

\n )}\n\n {/* Video grid */}\n

\n {/* Local video */}\n

\n \n \n You {muted ? \"🔇\" : \"\"} {videoOff ? \"📷❌\" : \"\"}\n \n

\n\n {/* Remote videos */}\n {[...peerStreams.entries()].map(([peerId, stream]) => (\n \n ))}\n

\n\n {/* Controls */}\n

\n \n {muted ? \"🔇 Unmute\" : \"🎤 Mute\"}\n \n \n {videoOff ? \"📷 Start Video\" : \"📹 Stop Video\"}\n \n \n ✋ Leave\n \n

\n );\n}\n\n// ─── Sub-components ────────────────────────────\n\nfunction RemoteVideo({ peerId, stream }: { peerId: string; stream: MediaStream }) {\n const videoRef = useRef(null);\n\n useEffect(() => {\n if (videoRef.current) {\n videoRef.current.srcObject = stream;\n }\n }, [stream]);\n\n return (\n

\n );\n}\n\nfunction CopyLink({ roomId }: { roomId: string }) {\n const [copied, setCopied] = useState(false);\n\n const copy = async () => {\n const url = `${location.origin}${location.pathname}#${roomId}`;\n await navigator.clipboard.writeText(url);\n setCopied(true);\n setTimeout(() => setCopied(false), 2000);\n };\n\n return (\n \n {copied ? \"✅ Copied!\" : \"📋 Copy invite link\"}\n \n );\n}\n",[],[178,258,250],"components","e8f5ec1a-3984-11f1-ab80-42b51c65c3df",["D",1776337843007],"directory",[191],[178,258],"e8f612a8-3984-11f1-ab80-42b51c65c3df",["D",1776337843007],[190,192,193,194,195,196],[178],["D",1776337843007],{"_11":12,"_135":73},{"_11":12,"_131":-5,"_72":73,"_30":71,"_132":133,"_134":24},{"_39":119,"_13":16,"_33":36,"_120":84,"_121":63,"_122":123,"_124":88,"_125":126,"_127":128,"_129":14,"_130":12},"ctx",{"_52":-5,"_156":305,"_306":307,"_308":309,"_310":24,"_311":24,"_312":24,"_313":96,"_314":-5,"_315":-7,"_316":-7,"_317":26,"_318":24,"_319":24,"_320":-5,"_321":24,"_322":24,"_323":24,"_324":-5},"ENV",{"_276":277,"_278":279,"_280":16,"_281":282,"_283":284,"_285":286,"_287":288,"_289":290,"_291":292,"_293":294,"_295":296,"_297":298,"_299":300,"_301":302,"_303":304},"REACT_APP_SENTRY_DSN","https://586020d86f05489db63a554690acf1e9@o1398359.ingest.sentry.io/6724499","RENDER_GIT_COMMIT","71c1b20804b3232a7e513be260cfffc1932a9e97","RENDER_GIT_BRANCH","POSTHOG_API_TOKEN","phc_nmoyuAkStEZuUp69rYlg1DZgrIt19Gx0Y4Hwf8tGgJP","POSTHOG_API_HOST","https://wart.val.town","WEB_API_TEMPLATE","https://{val}.web.val.run","APP_URL","https://www.val.town","MODULE_URL","https://esm.town","VANITY_WEB_API_TEMPLATE","https://{label}.val.run/","DENOLS_URL","https://lsp.val.town","NODE_ENV","production","CLOUDFLARE_TURNSTILE_SITE_KEY","0x4AAAAAACtaIZJH7s9rBMZ6","GOOGLE_CLIENT_ID","875989696899-jtsqkhlbdv5jrlsk8631p7ipjg3c6o62.apps.googleusercontent.com","STRIPE_PUBLISHABLE_KEY","pk_live_51N2zvWEpZTTLipIkVEwXrUG9AT0yeOOEYxszarZT1jpsZV58Ly6wlg3SltZpHN26CUalOBmUSY7adQRQiSkCZz2500qSXNkf8Y","API_URL","https://api.val.town",[],"preferencesKeybindings","default","preferencesTheme","light","preferencesFixers","preferencesCopilot","preferencesSelectionAi","preferencesCloseBrackets","preferencesChatPanelState","preferencesDprint","preferencesDenofmt","notificationCount","flagDenols","isBusinessOrgMember","businessOrgHandle","isBusinessOrgAdmin","isHigherTownieTier","navCollapsed","currentOrgId"]

History · index.html