progress

display.go

@@ -1,49 +1,122 @@
 package main
 
 // Packages
-import "github.com/gorilla/websocket"
+import "errors"
+import "log"
+import "net/http"
 import "sync"
+import "time"
+import "github.com/gorilla/websocket"
 
 // Display instance
 type Display struct {
 	// WebSocket used to communicate with the display
 	sock *websocket.Conn
+	sockSendMtx sync.Mutex
 
 	// User currently connected to the display
 	user *User
 
 	// One-time-pass currently shown on the display
+	otpMtx sync.Mutex
 	otp string
+
+	// Channel to pass the answer from the display coroutine to the user couroutine
+	answerCh chan string
+}
+
+// Helper function to flush channels
+func chFlush(ch *chan string) {
+	for {
+		empty := false
+		select {
+		// If data is available, read it and try again
+		case <-*ch:
+			continue
+		
+		// If no data is available, stop reading
+		default:
+			empty = true
+		}
+		if empty { break }
+	}
+}
+
+// Helper function to read from a channel with a timeout
+func chReadTimeout(ch *chan string, timeoutMS int) (string, error) {
+	select {
+	// If data is available, return it with no error
+	case data := <-*ch:
+		return data, nil
+	
+	// If no data has been received and the timeout is reached, return an error
+	case <-time.After(timeoutMS * time.Millisecond):
+		return "", errors.New("timeout")
+	}
 }
 
 // List of all connected displays
 var displaysLck sync.Mutex
-var displays map[string]*Display
+var displays = map[string]*Display{}
 
 // Get the display back to its idle state
 func (this *Display) reset() {
+	// Acquire the sending mutex
+	this.sockSendMtx.Lock()
+
 	// Send a reset command
 	this.sock.WriteMessage(websocket.TextMessage, encodeMessage(Message{
 		mtype: "reset",
 	}))
+
+	// Release the sending mutex
+	this.sockSendMtx.Unlock()
 }
 
 // Switch the display to streaming mode
 func (this *Display) stream() {
+	// Acquire the sending mutex
+	this.sockSendMtx.Lock()
+	
 	// Send a show-pin command
 	this.sock.WriteMessage(websocket.TextMessage, encodeMessage(Message{
 		mtype: "stream",
 	}))
+
+	// Release the sending mutex
+	this.sockSendMtx.Unlock()
 }
 
 // Send a WebRTC offer to the display and get an answer
-func (this *Display) webRTCOffer(offer string, timeoutMS int) string {
-	// TODO
-	return ""
+func (this *Display) webRTCOffer(offer string, timeoutMS int) (string, error) {
+	// Flush the answer channel
+	chFlush(&this.answerCh)
+
+	// Acquire the sending mutex
+	this.sockSendMtx.Lock()
+
+	// Send the offer
+	this.sock.WriteMessage(websocket.TextMessage, encodeMessage(Message{
+		mtype: "webrtc-offer",
+		arguments: map[string]interface{}{
+			"offer": offer,
+		},
+	}))
+
+	// Release the sending mutex
+	this.sockSendMtx.Unlock()
+
+	// TODO: Close the connection if the display failed to respond?
+
+	// Receive the answer
+	return chReadTimeout(&this.answerCh, CONF_TIMEOUT_MS)
 }
 
 // Send an ICE candiate to the display
 func (this *Display) iceCandidate(candidate string) {
+	// Acquire the sending mutex
+	this.sockSendMtx.Lock()
+	
 	// Send the candidate
 	sendMessage(this.sock, Message{
 		mtype: "ice-candidate",
@@ -51,9 +124,95 @@ func (this *Display) iceCandidate(candidate string) {
 			"candidate": candidate,
 		},
 	})
+
+	// Release the sending mutex
+	this.sockSendMtx.Unlock()
 }
 
 // Connection handler for displays
-func displayHandler(sock *websocket.Conn, dispID string) {
+func displayHandler(sock *websocket.Conn, dispID string, otp string) {
+	// Create the display object
+	disp := Display{ sock: sock, otp: otp }
+
+	// Acquire the sending mutex
+	disp.sockSendMtx.Lock()
+
+	// Acquire the display list
+	displaysLck.Lock()
 	
+	// Check that a display with that ID doesn't already exist
+	if displays[dispID] != nil {
+		// Release the display list
+		displaysLck.Unlock()
+
+		// Send back an error
+		sendErrorMessage(sock, http.StatusConflict)
+
+		// Release the sending mutex
+		disp.sockSendMtx.Unlock()
+	}
+
+	// Add the display to the list
+	displays[dispID] = &disp
+
+	// Release the display list
+	displaysLck.Unlock()
+
+	// Send back the config for the display to use
+	sendMessage(sock, Message{
+		mtype: "config",
+		arguments: map[string]interface{}{
+			"timeout": CONF_TIMEOUT_MS,
+			"iceServers": CONF_ICE_SERVERS,
+		},
+	})
+
+	// Release the sending mutex
+	disp.sockSendMtx.Unlock()
+
+	// Log the new display
+	log.Println("New display: ID='" + dispID + "', OTP='" + otp + "'")
+
+	// Message loop
+	for {
+		// Receive a message
+		msg, err := recvMessage(sock, 0)
+
+		// Give up on the connection if there was an error
+		if (err != nil) { break }
+
+		// Handle the message depending on its type
+		switch msg.mtype {
+		case "otp":
+			// Check that the message contains an OTP
+			otp, valid := msg.arguments["otp"].(string)
+			if (!valid) { break }
+
+			// Acquire the display's OTP
+			disp.otpMtx.Lock()
+
+			// Update the OTP
+			disp.otp = otp
+
+			// Release the display's OTP
+			disp.otpMtx.Unlock()
+
+		case "answer":
+			// Check that the message contains an answer
+			answer, valid := msg.arguments["answer"].(string)
+			if (!valid) { break }
+
+			// Send the answer through the display's answer channel
+			disp.answerCh <- answer
+
+		case "ice-candidate":
+			// TODO
+
+		default:
+			// Give up
+			break
+		}
+	}
+
+	// TODO: Gracefull disconnect the connected user if there is one
 }

main.go

@@ -14,9 +14,9 @@ func main() {
 	http.Handle("/", static)
 
 	// Create a handler for the signaling backend
-	// http.HandleFunc("/sig", wsHandler)
+	http.HandleFunc("/sig", wsHandler)
 
 	// Run the server
 	err := http.ListenAndServe(":3000", nil)
-	if( err != nil) { log.Fatal(err) }
+	if (err != nil) { log.Fatal(err) }
 }

message.go

@@ -1,48 +1,110 @@
 package main
 
+import "encoding/json"
+import "errors"
+import "time"
 import "github.com/gorilla/websocket"
-//import "encoding/json"
 
 // Backend message object
 type Message struct {
 	// Type of message
-	mtype string
+	mtype string;
 
 	// Arguments of the message
-	arguments map[string]interface{}
+	arguments map[string]interface{};
 }
 
 // Get the display back to its idle state
 func encodeMessage(msg Message) []byte {
-	// TODO
-	return nil
+	// Create the message map and set the message type
+	msgJson := map[string]interface{}{};
+	msgJson["type"] = msg.mtype;
+
+	// Add all arguments
+	for k, v := range msg.arguments {
+		// Skip the type key
+		if (k == "type") { continue };
+
+		// Add the key/value to the argument map
+		msgJson[k] = v;
+	}
+
+	// Serialize the message
+	data, _ := json.Marshal(msgJson);
+
+	// Return the data
+	return data;
 }
 
 // Get the display back to its idle state
-func decodeMessage(data []byte) Message {
-	// TODO
-	return Message{}
+func decodeMessage(data []byte) (Message, error) {
+	// Attempt to parse the message
+	var msgJson map[string]interface{};
+	err := json.Unmarshal(data, &msgJson);
+	if (err != nil) { return Message{}, err; }
+
+	// If no message type is given, return an error
+	if msgJson["type"] == nil { return Message{}, errors.New("Invalid message"); }
+
+	// If the message type is not a string, return an error
+	mtype, valid := msgJson["type"].(string);
+	if !valid { return Message{}, errors.New("Invalid message"); }
+
+	// Create the message object
+	msg := Message{ mtype: mtype, arguments: map[string]interface{}{} };
+
+	// Extract the arguments
+	for k, v := range msgJson {
+		// Skip the type key
+		if (k == "type") { continue; }
+
+		// Add the key/value to the argument map
+		msg.arguments[k] = v;
+	}
+
+	// Return the decoded message with no error
+	return msg, nil;
 }
 
 // Encode a message and send it over a WebSocket
 func sendMessage(sock *websocket.Conn, msg Message) {
 	// Encode and send the message
-	sock.WriteMessage(websocket.TextMessage, encodeMessage(msg))
+	sock.WriteMessage(websocket.TextMessage, encodeMessage(msg));
 }
 
 // Receive a message from a WebSocket and decode it
-func recvMessage(sock *websocket.Conn, timeoutMS int) Message {
-	// TODO
-	return Message{}
+func recvMessage(sock *websocket.Conn, timeoutMS int) (Message, error) {
+	for {
+		// Configure the timeout
+		if timeoutMS > 0 {
+			// Milliseconds given
+			sock.SetReadDeadline(time.Now().Add(time.Millisecond * time.Duration(timeoutMS)))
+		} else {
+			// No timeout given
+			sock.SetReadDeadline(time.Time{});
+		}
+
+		// Receive a WebSocket message
+		mt, msgData, err := sock.ReadMessage();
+
+		// If there was an error, give up and return it
+		if (err != nil) { return Message{}, err; }
+
+		// If the message is not a text message, continue waiting
+		if (mt != websocket.TextMessage) { continue; }
+
+		// Return the decoded message
+		return decodeMessage(msgData);
+	}
 }
 
 // Encode an error message and send it over a WebSocket
-func sendErrorMessage(sock *websocket.Conn, err string) {
+func sendErrorMessage(sock *websocket.Conn, code int) {
 	// Send the error message
 	sock.WriteMessage(websocket.TextMessage, encodeMessage(Message{
 		mtype: "error",
 		arguments: map[string]interface{}{
-			"error": err,
+			"code": code,
 		},
-	}))
+	}));
 }

user.go

@@ -1,29 +1,27 @@
 package main
 
 // Packages
-//import "log"
-import "github.com/gorilla/websocket"
-//import "encoding/json"
+import "log"
 import "sync"
+import "net/http"
+import "github.com/gorilla/websocket"
 
 // General client instance
 type User struct {
 	// WebSocket used to communicate with the user
-	sock *websocket.Conn
+	sock *websocket.Conn;
 
 	// Display mutex
-	displayMtx sync.Mutex
+	displayMtx sync.Mutex;
 
 	// Display that the user is connecting to
-	display *Display
+	display *Display;
 }
 
-// TODO: Check type
-
 // Connection handler for users
 func userHandler(sock *websocket.Conn) {
 	// Initialize the user instance
-	user := User{ sock: sock, display: nil }
+	user := User{ sock: sock, display: nil };
 
 	// Send back the config for the user to use
 	sendMessage(sock, Message{
@@ -32,110 +30,116 @@ func userHandler(sock *websocket.Conn) {
 			"timeout": CONF_TIMEOUT_MS,
 			"iceServers": CONF_ICE_SERVERS,
 		},
-	})
+	});
 
 	// Message loop
 	for {
 		// Receive a message
-		msg := recvMessage(sock, 0)
+		msg, err := recvMessage(sock, 0);
 
-		// TODO: exit on error
+		// Give up on the connection if there was an error
+		if (err != nil) { break; }
 
 		// Handle the message depending on its type
 		switch msg.mtype {
 		case "connect":
 			// Check that a display ID was provided
-			if msg.arguments["dispID"] == nil {
-				sendErrorMessage(sock, "Missing display ID")
-				continue;
-			}
+			dispID, valid := msg.arguments["dispID"].(string)
+			if (!valid) { break; }
 
 			// Check that an OTP was provided
-			if msg.arguments["otp"] == nil {
-				sendErrorMessage(sock, "Missing OTP")
-				continue;
-			}
+			otp, valid := msg.arguments["otp"].(string)
+			if (!valid) { break; }
 
 			// Acquire the display ID list
-			displaysLck.Lock()
+			displaysLck.Lock();
 
 			// Check that the display ID exists
-			dispID := msg.arguments["dispID"].(string)
-			if displays[dispID] == nil {
+			if (displays[dispID] == nil) {
 				// Release the display list
-				displaysLck.Unlock()
+				displaysLck.Unlock();
 
 				// Send back an error
-				sendErrorMessage(sock, "Unknown display")
+				sendErrorMessage(sock, http.StatusNotFound);
 				continue;
 			}
 
+			// Acquire the displays OTP
+			displays[dispID].otpMtx.Lock();
+
 			// Check the OTP
-			otp := msg.arguments["otp"].(string)
-			if otp == "" || otp != displays[dispID].otp {
+			if (otp == "" || otp != displays[dispID].otp) {
+				// Release the display's OTP
+				displays[dispID].otpMtx.Unlock();
+
 				// Release the display list
-				displaysLck.Unlock()
+				displaysLck.Unlock();
 
 				// Send back an error
-				sendErrorMessage(sock, "Invalid OTP")
+				sendErrorMessage(sock, http.StatusUnauthorized);
 				continue;
 			}
 
-			// TODO: Check types
+			// Release the display's OTP
+			displays[dispID].otpMtx.Unlock();
 
 			// Acquire the user's display pointer
-			user.displayMtx.Lock()
+			user.displayMtx.Lock();
 
 			// Register the user and display to each other
-			user.display = displays[dispID]
-			user.display.user = &user
+			user.display = displays[dispID];
+			user.display.user = &user;
 
 			// Put the display into streaming mode
-			user.display.stream()
+			user.display.stream();
 
 			// TODO: Check for error
 		
 			// Release the user's display pointer
-			user.displayMtx.Lock()
+			user.displayMtx.Lock();
 
 			// Release the display list
-			displaysLck.Unlock()
+			displaysLck.Unlock();
+
+			// Log the connection
+			log.Println("User successfully connected to display: ID='", dispID, "'");
 
 			// Notify the user of the successful connection
 			sendMessage(sock, Message{
 				mtype: "success",
-			})
+			});
 
 		case "webrtc-offer":
 			// Check that the message contains an offer
-			if msg.arguments["offer"] == nil {
-				// Send back an error
-				sendErrorMessage(sock, "No offer given")
-				continue;
-			}
-
-			// TODO: Check type
+			offer, valid := msg.arguments["offer"].(string)
+			if (!valid) { break; }
 
 			// Acquire the user's display pointer
-			user.displayMtx.Lock()
+			user.displayMtx.Lock();
 
 			// Check that the user is connected to a display
-			if user.display == nil {
+			if (user.display == nil) {
 				// Release the user's display pointer
-				user.displayMtx.Unlock()
+				user.displayMtx.Unlock();
 
 				// Send back an error
-				sendErrorMessage(sock, "Not connected")
+				sendErrorMessage(sock, http.StatusForbidden);
 				continue;
 			}
 
 			// Send the offer to the display and get the response
-			answer := user.display.webRTCOffer(msg.arguments["offer"].(string), CONF_TIMEOUT_MS)
+			answer, err := user.display.webRTCOffer(offer, CONF_TIMEOUT_MS);
+			if (err != nil) {
+				// Release the user's display pointer
+				user.displayMtx.Unlock();
 
-			// TODO: Check for error
+				// Send back an error
+				sendErrorMessage(sock, http.StatusBadGateway);
+				continue;
+			}
 
 			// Release the user's display pointer
-			user.displayMtx.Unlock()
+			user.displayMtx.Unlock();
 
 			// Send back the response
 			sendMessage(sock, Message{
@@ -143,42 +147,39 @@ func userHandler(sock *websocket.Conn) {
 				arguments: map[string]interface{}{
 					"answer": answer,
 				},
-			})
+			});
 
 		case "ice-candidate":
 			// Check that the message contains an ice candidate
-			if msg.arguments["candidate"] == nil {
-				// Send back an error
-				sendErrorMessage(sock, "No offer given")
-				continue;
-			}
-
-			// TODO: Check type
+			candidate, valid := msg.arguments["candidate"].(string)
+			if (!valid) { break; }
 
 			// Acquire the user's display pointer
-			user.displayMtx.Lock()
+			user.displayMtx.Lock();
 
 			// Check that the user is connected to a display
-			if user.display == nil {
+			if (user.display == nil) {
 				// Release the user's display pointer
-				user.displayMtx.Unlock()
+				user.displayMtx.Unlock();
 
 				// Send back an error
-				sendErrorMessage(sock, "Not connected")
+				sendErrorMessage(sock, http.StatusForbidden);
 				continue;
 			}
 
 			// Send the ice candidtate to the display
-			user.display.iceCandidate(msg.arguments["candidate"].(string))
+			user.display.iceCandidate(candidate);
+
+			// TODO: Check error
 
 			// Release the user's display pointer
-			user.displayMtx.Unlock()
+			user.displayMtx.Unlock();
 
 		default:
-			// Send back an error
-			sendErrorMessage(sock, "Invalid message type")
+			// Give up
+			break;
 		}
 	}
 
-	// If the user was connected to a display, disconnect it
+	// TODO: Gracefull disconnect the connected display if there is one
 }

wshandler.go

@@ -21,7 +21,10 @@ func wsHandler(respWriter http.ResponseWriter, req *http.Request) {
 	defer sock.Close()
 
 	// Receive the init message
-	msg := recvMessage(sock, 5000)
+	msg, err := recvMessage(sock, 5000)
+
+	// If there was an error or timeout, give up on the connection
+	if err != nil { return }
 
 	// If it's not an init message, give up
 	if msg.mtype != "init" { return }
@@ -34,9 +37,14 @@ func wsHandler(respWriter http.ResponseWriter, req *http.Request) {
 
 	case "display":
 		// Check that the display has provided its ID
-		if msg.arguments["dispID"] == nil { return }
+		dispID, valid := msg.arguments["dispID"].(string)
+		if !valid { return }
+
+		// Check that the display has provided its OTP
+		otp, valid := msg.arguments["otp"].(string)
+		if !valid { return }
 		
 		// Handle as a display
-		displayHandler(sock, msg.arguments["dispID"].(string))
+		displayHandler(sock, dispID, otp)
 	}
 }

www/display/index.html

@@ -5,7 +5,7 @@
         <meta charset="UTF-8"> 
 
         <!-- Title of the software -->
-        <title>Quick Screen Share - Screen</title>
+        <title>WisCast - Display</title>
 
         <!-- Load the stylesheet from the main style file -->
         <link rel="stylesheet" href="/css/style.css"> 
@@ -15,11 +15,8 @@
         <div id="idleScreen">
             <span id="dispIDLabel">Display ID:</span><br>
             <span id="dispID"></span>
-        </div>
-
-        <div id="pinScreen" hidden>
-            <span id="pinLabel">PIN:</span><br> 
-            <span id="pin"></span>
+            <span id="otpLabel">OTP:</span><br>
+            <span id="otp"></span>
         </div>
 
         <!-- Video widget -->
@@ -28,9 +25,9 @@
 
     <!-- Footer to show credit to the software and developers -->
     <footer id="credits">
-        Powered by <a href="https://x.com/ryzerth" target="_blank">Quick Screen Share</a>. Made with ❤️ by <a href="https://x.com/ryzerth" target="_blank">Ryzerth</a>
+        Powered by <a href="https://wiscast.org/" target="_blank">WisCast</a>. Made with ❤️ by <a href="https://x.com/ryzerth" target="_blank">Ryzerth</a>
     </footer>
 
     <!-- Main screen code -->
-    <script src="/scripts/screen.js"></script>
+    <script src="/scripts/display.js"></script>
 </html>

www/index.html

@@ -5,7 +5,7 @@
         <meta charset="UTF-8"> 
 
         <!-- Title of the software -->
-        <title>Quick Screen Share</title>
+        <title>WisCast - Connect</title>
 
         <!-- Load the stylesheet from the main style file -->
         <link rel="stylesheet" href="/css/style.css"> 
@@ -30,9 +30,9 @@
 
     <!-- Footer to show credit to the software and developers -->
     <footer>
-        Powered by <a href="https://x.com/ryzerth" target="_blank">Quick Screen Share</a>. Made with ❤️ by <a href="https://x.com/ryzerth" target="_blank">Ryzerth</a>
+        Powered by <a href="https://wiscast.org/" target="_blank">WisCast</a>. Made with ❤️ by <a href="https://x.com/ryzerth" target="_blank">Ryzerth</a>
     </footer>
 
     <!-- Main client code -->
-    <script src="/scripts/client.js"></script>
+    <script src="/scripts/user.js"></script>
 </html>

www/scripts/client.js

@@ -1,185 +0,0 @@
-// Streaming objects
-let sock = null;
-let stream = null;
-let conn = null;
-
-// GUI Objects
-let connForm    = document.querySelector('#connForm');
-let dispNameTb  = document.querySelector('#dispName');
-let connBtn     = document.querySelector('#connect');
-let pinValForm  = document.querySelector('#pinValForm');
-let dispPINTb   = document.querySelector('#dispPIN');
-let validateBtn = document.querySelector('#validate');
-let streamForm  = document.querySelector('#streamForm');
-let locPlayback = document.querySelector('#localPlayback');
-
-// Make sure the connect button cannot be pressed if there is no display name
-function onDispNameChange() {
-    connBtn.disabled = !(dispNameTb.value.length > 0);
-}
-function onPINChange() {
-    validateBtn.disabled = !(dispPINTb.value.length === 6);
-}
-
-// Handle enter key pressed
-dispNameTb.addEventListener('keyup', (event) => {
-    if (event.key === 'Enter' && !connBtn.disabled) {
-        connBtn.click();
-    }
-})
-dispPINTb.addEventListener('keyup', (event) => {
-    if (event.key === 'Enter' && !validateBtn.disabled) {
-        validateBtn.click();
-    }
-})
-
-// WebSocket message handler
-async function onMessage(data) {
-    // Parse the message
-    console.log(data)
-    const msg = JSON.parse(data);
-
-    // Process depending on the type
-    switch (msg.type) {
-    case 'disp-ok':
-        // Switch to the PIN screen
-        connForm.hidden = true;
-        pinValForm.hidden = false;
-        dispPINTb.focus();
-        dispPINTb.select();
-        break;
-
-    case 'disp-error':
-        // Show the error
-        // TODO
-        console.log('ERROR: ' + msg.error)
-        break;
-
-    case 'auth-ok':
-        // Show the status update
-        validateBtn.textContent = 'Starting the Stream...';
-        await startStream();
-        break;
-
-    case 'answer':
-        console.log('Got answer')
-        // Pass on the offer to WebRTC
-        await conn.setRemoteDescription(new RTCSessionDescription(msg.answer));
-        break;
-
-    case 'ice-candidate':
-        console.log('Got ice candidate')
-        // Add the ice candidate to the WebRTC connection
-        await conn.addIceCandidate(msg.candidate);
-        break;
-
-    case 'disconnect':
-        // Reload the page
-        location.reload();
-        break;
-
-    default:
-        console.dir(msg)
-        break;
-    }
-}
-
-async function startStream() {
-    // Get the stream for the screen
-    stream = await navigator.mediaDevices.getDisplayMedia({ video: { cursor: 'always' } });
-
-    // Create the connection
-    conn = new RTCPeerConnection({'iceServers': [{'urls': 'stun:stun.l.google.com:19302'}]});
-
-    // Handle ice candidates
-    conn.addEventListener('icecandidate', async (event) => {
-        // If there is a new candidate, send it to the peer through websockets
-        if (event.candidate) {
-            await sock.send(JSON.stringify({
-                type: 'ice-candidate',
-                candidate: event.candidate
-            }))
-        }
-    });
-
-    // Handle connection and disconnection of peer
-    conn.addEventListener('connectionstatechange', (event) => {
-        switch (conn.connectionState) {
-        case 'connected':
-            // Switch to stream screen
-            pinValForm.hidden = true;
-            streamForm.hidden = false;
-            locPlayback.srcObject = stream;
-
-            console.log("Connected!")
-            
-            break;
-
-        case 'disconnected':
-            console.log("Disconnected.")
-            // Reload the page to ensure the state is complete reset
-            location.reload();
-            break;
-
-        default:
-            break;
-        }
-    });
-
-    // Start streaming the screen
-    stream.getTracks().forEach(track => {
-        conn.addTrack(track, stream);
-    });
-
-    // If the stream ends, reload the page
-    stream.getVideoTracks()[0].addEventListener('ended', (event) => {
-        location.reload();
-    })
-
-    // Create and send an offer
-    const offer = await conn.createOffer();
-    await conn.setLocalDescription(offer);
-    await sock.send(JSON.stringify({
-        type: 'offer',
-        offer: offer
-    }))
-}
-
-async function connect() {
-    // Disable the connect button and show status
-    dispNameTb.disabled = true;
-    connBtn.disabled = true;
-    connBtn.textContent = 'Connecting...';
-
-    // Send a connect command to the server
-    await sock.send(JSON.stringify({
-        type: 'connect',
-        dispID: dispNameTb.value
-    }));
-}
-
-async function validatePIN() {
-    // Disable the validate button and show status
-    dispPINTb.disabled = true;
-    validateBtn.disabled = true;
-    validateBtn.textContent = 'Checking the PIN...';
-
-    // Send the validate pin command to the server
-    await sock.send(JSON.stringify({
-        type: 'validate-pin',
-        pin: dispPINTb.value
-    }));
-}
-
-async function disconnect() {
-    // Just reload the page
-    location.reload();
-}
-
-// Connect to the server using WebSockets
-console.log('Connecting to websocket...')
-sock = new WebSocket(`ws://${location.host}/sig`);
-sock.addEventListener('open', async (event) => {
-    console.log('Connected to websocket')
-});
-sock.addEventListener('message', (event) => { onMessage(event.data); })

www/scripts/display.js

@@ -0,0 +1,39 @@
+// Streaming objects
+let sock = null;
+let conn = null;
+
+// GUI Objects
+let idleScreen  = document.querySelector('#idleScreen');
+let dispIDSpan  = document.querySelector('#dispID');
+let pinScreen   = document.querySelector('#pinScreen');
+let pinSpan     = document.querySelector('#pin');
+let playback    = document.querySelector('#playback');
+let credits     = document.querySelector('#credits');
+
+// Connect to the server using WebSockets
+console.log('Connecting to websocket...')
+sock = new WebSocket(`ws://${location.host}/sig`);
+sock.addEventListener('open', async (event) => {
+    console.log('Connected to websocket')
+
+    // // DEBUGGING ONLY
+    // await sock.send(JSON.stringify({
+    //     type: 'init',
+    //     pin: dispPINTb.value
+    // }))
+
+    await sock.send(JSON.stringify({
+        type: 'init',
+        clientType: 'display',
+        dispID: 'TEST',
+        otp: '123456'
+    }));
+});
+
+sock.addEventListener('message', (event) => {
+    console.log(event.data)
+});
+
+sock.addEventListener('close', (event) => {
+    console.log('Disconnected from websocket')
+});

www/scripts/screen.js

@@ -1,155 +0,0 @@
-// Get or generate a display ID
-let params = new URLSearchParams(document.location.search);
-let dispID = params.get("dispID");
-if (dispID === null) {
-    // Generate a random name (TODO)
-    dispID = self.crypto.randomUUID().substring(0, 6);
-}
-
-// App objects
-let sock = null;
-let conn = null;
-
-// GUI Objects
-let idleScreen  = document.querySelector('#idleScreen');
-let dispIDSpan  = document.querySelector('#dispID');
-let pinScreen   = document.querySelector('#pinScreen');
-let pinSpan     = document.querySelector('#pin');
-let playback    = document.querySelector('#playback');
-let credits     = document.querySelector('#credits');
-
-// Show the display ID
-dispIDSpan.textContent = dispID;
-
-async function reset() {
-    // Completely reset the state
-    playback.hidden = true;
-    pinScreen.hidden = true;
-    idleScreen.hidden = false;
-    credits.hidden = false;
-    playback.srcObject = null;
-    conn = null;
-
-    // Initialize WebRTC
-    await initRTC();
-}
-
-// WebSocket message handler
-async function onMessage(data) {
-    // Parse the message
-    console.log(data)
-    const msg = JSON.parse(data);
-
-    // Process depending on the type
-    switch (msg.type) {
-    case 'conn-req':
-        // Show the pin
-        pinSpan.textContent = msg.pin;
-
-        // Switch to pin mode
-        idleScreen.hidden = true;
-        pinScreen.hidden = false;
-        break;
-
-    case 'offer':
-        console.log('Got offer')
-        // Pass on the offer to WebRTC
-        await conn.setRemoteDescription(new RTCSessionDescription(msg.offer));
-
-        // Create an answer
-        answer = await conn.createAnswer();
-        await conn.setLocalDescription(answer);
-
-        // Encode and send the answer
-        await sock.send(JSON.stringify({
-            type: 'answer',
-            answer: answer
-        }))
-        break;
-
-    case 'ice-candidate':
-        console.log('Got ice candidate')
-        // Add the ice candidate to the WebRTC connection
-        await conn.addIceCandidate(msg.candidate);
-        break;
-
-    case 'auth-ok':
-
-        break;
-
-    case 'disconnect':
-        // Reset the display
-        reset();
-        break;
-
-    default:
-        break;
-    }
-}
-
-async function initRTC() {
-    // Create the WebRTC connection
-    conn = new RTCPeerConnection({'iceServers': [{'urls': 'stun:stun.l.google.com:19302'}]});
-        
-    // Handle new ice candidates
-    conn.addEventListener('icecandidate', async (event) => {
-        // If there is a new candidate, send it to the peer through websockets
-        if (event.candidate) {
-            await sock.send(JSON.stringify({
-                type: 'ice-candidate',
-                candidate: event.candidate
-            }))
-        }
-    });
-
-    // Handle connection and disconnection of peer
-    conn.addEventListener('connectionstatechange', (event) => {
-        switch (conn.connectionState) {
-        case 'connected':
-            // Switch to playback mode
-            pinScreen.hidden = true;
-            credits.hidden = true;
-            playback.hidden = false;
-            break;
-
-        case 'disconnected':
-            // Reset the display
-            reset();
-            break;
-
-        default:
-            break;
-        }
-    });
-
-    // Send remote stream to the playback widget
-    conn.addEventListener('track', (event) => {
-        const [remoteStream] = event.streams;
-        playback.srcObject = remoteStream;
-    });
-}
-
-// Main function for the app
-async function main() {
-    // Connect to the server using WebSockets
-    console.log('Connecting to websocket...')
-    sock = new WebSocket(`ws://${location.host}/sig`);
-
-    // Add handlers for the socket
-    sock.addEventListener('message', (event) => { onMessage(event.data); })
-
-    sock.addEventListener('open', async (event) => {
-        console.log('Connected to websocket')
-        // Tell the server that this is a screen
-        await sock.send(JSON.stringify({
-            type: 'screen',
-            name: dispID
-        }))
-
-        // Initialize WebRTC
-        await initRTC();
-    });
-}
-
-// Run the main function
-main();

www/scripts/user.js

@@ -0,0 +1,40 @@
+// Streaming objects
+let sock = null;
+let stream = null;
+let conn = null;
+
+// GUI Objects
+let connForm    = document.querySelector('#connForm');
+let dispNameTb  = document.querySelector('#dispName');
+let connBtn     = document.querySelector('#connect');
+let pinValForm  = document.querySelector('#pinValForm');
+let dispPINTb   = document.querySelector('#dispPIN');
+let validateBtn = document.querySelector('#validate');
+let streamForm  = document.querySelector('#streamForm');
+let locPlayback = document.querySelector('#localPlayback');
+
+// Connect to the server using WebSockets
+console.log('Connecting to websocket...')
+sock = new WebSocket(`ws://${location.host}/sig`);
+sock.addEventListener('open', async (event) => {
+    console.log('Connected to websocket')
+
+    // // DEBUGGING ONLY
+    // await sock.send(JSON.stringify({
+    //     type: 'init',
+    //     pin: dispPINTb.value
+    // }))
+
+    await sock.send(JSON.stringify({
+        type: 'init',
+        clientType: 'user'
+    }));
+});
+
+sock.addEventListener('message', (event) => {
+    console.log(event.data)
+});
+
+sock.addEventListener('close', (event) => {
+    console.log('Disconnected from websocket')
+});