Allow configuring server port

server/index.ts

@@ -9,60 +9,64 @@ type Message =
 
 const clients: Map<WebsocketData['clientId'], WebSocket> = new Map()
 
-const _server = Deno.serve((req) => {
+const _server = Deno.serve({
+  port: Number.parseInt(Deno.env.get('PORT') || '8000', 10),
+  handler: (req) => {
    if (req.headers.get("upgrade") !== "websocket") {
-    return new Response(null, { status: 501 })
+     return new Response(null, { status: 501 })
+   }
+
+    const { socket, response } = Deno.upgradeWebSocket(req)
+
+    // TODO Allow creating private ponds
+    const clientId = crypto.randomUUID()
+    console.log('generated clientId', clientId)
+
+    socket.addEventListener("open", () => {
+      // register newly connected client and tell them how many other people are there
+      console.log('Connection opened', clientId, clients)
+      socket.send(JSON.stringify(<Message>{
+        type: 'welcome',
+        id: clientId
+      }))
+      const enterNotice = JSON.stringify(<Message>{
+        type: 'presence-information',
+        others: clients.size,
+      })
+      clients.set(clientId, socket)
+      for (const client of clients.values()) {
+        client.send(enterNotice)
+      }
+    })
+
+    socket.addEventListener("message", (event) => {
+      const message = `${event.data}`
+      // broadcast message to all other clients
+      // TODO: Validate message shape
+      const msg = JSON.parse(`${message}`)
+      console.log('Relaying message from', clientId, msg)
+      for (const [uuid, client] of clients.entries()) {
+        if (uuid !== clientId) {
+          client.send(message)
+        }
+      }
+    })
+
+    socket.addEventListener("close", () => {
+      // remove client from list of registered clients and tell other clients how many people are there
+      console.log('Connection closed', clientId, clients)
+      clients.delete(clientId)
+      const leaveNotice = JSON.stringify(<Message>{
+        type: 'presence-information',
+        others: clients.size - 1,
+      })
+      for (const [uuid, client] of clients.entries()) {
+        if (uuid !== clientId) {
+          client.send(leaveNotice)
+        }
+      }
+    })
+
+    return response
   }
-
-  const { socket, response } = Deno.upgradeWebSocket(req)
-  // TODO Allow creating private ponds
-  const clientId = crypto.randomUUID()
-  console.log('generated clientId', clientId)
-
-  socket.addEventListener("open", () => {
-    // register newly connected client and tell them how many other people are there
-    console.log('Connection opened', clientId, clients)
-    socket.send(JSON.stringify(<Message>{
-      type: 'welcome',
-      id: clientId
-    }))
-    const enterNotice = JSON.stringify(<Message>{
-      type: 'presence-information',
-      others: clients.size,
-    })
-    clients.set(clientId, socket)
-    for (const client of clients.values()) {
-      client.send(enterNotice)
-    }
-  })
-
-  socket.addEventListener("message", (event) => {
-    const message = `${event.data}`
-    // broadcast message to all other clients
-    // TODO: Validate message shape
-    const msg = JSON.parse(`${message}`)
-    console.log('Relaying message from', clientId, msg)
-    for (const [uuid, client] of clients.entries()) {
-      if (uuid !== clientId) {
-        client.send(message)
-      }
-    }
-  })
-
-  socket.addEventListener("close", () => {
-    // remove client from list of registered clients and tell other clients how many people are there
-    console.log('Connection closed', clientId, clients)
-    clients.delete(clientId)
-    const leaveNotice = JSON.stringify(<Message>{
-      type: 'presence-information',
-      others: clients.size - 1,
-    })
-    for (const [uuid, client] of clients.entries()) {
-      if (uuid !== clientId) {
-        client.send(leaveNotice)
-      }
-    }
-  })
-
-  return response
 })