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feat(websocket)!: Implement WebSocket connection and event handling

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This commit is contained in:
Janis
2025-11-22 18:32:28 +01:00
parent 09cc96141d
commit ba373f91e9
25 changed files with 420 additions and 80 deletions
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17
build.sbt
View File

@@ -1,12 +1,12 @@
ThisBuild / scalaVersion := "3.5.1"
lazy val commonSettings = Seq(
libraryDependencies += "org.scalactic" %% "scalactic" % "3.2.18",
libraryDependencies += "org.scalatest" %% "scalatest" % "3.2.18" % "test",
libraryDependencies += "io.github.mkpaz" % "atlantafx-base" % "2.0.1",
libraryDependencies += "org.scalafx" %% "scalafx" % "22.0.0-R33",
libraryDependencies += "org.scala-lang.modules" %% "scala-xml" % "2.3.0",
libraryDependencies += "org.playframework" %% "play-json" % "3.1.0-M1",
libraryDependencies += "org.scalactic" %% "scalactic" % "3.2.19",
libraryDependencies += "org.scalatest" %% "scalatest" % "3.2.19" % "test",
libraryDependencies += "io.github.mkpaz" % "atlantafx-base" % "2.1.0",
libraryDependencies += "org.scalafx" %% "scalafx" % "24.0.2-R36",
libraryDependencies += "org.scala-lang.modules" %% "scala-xml" % "2.4.0",
libraryDependencies += "org.playframework" %% "play-json" % "3.1.0-M9",
libraryDependencies ++= {
// Determine OS version of JavaFX binaries
lazy val osName = System.getProperty("os.name") match {
@@ -38,8 +38,9 @@ lazy val knockoutwhistweb = project.in(file("knockoutwhistweb"))
commonSettings,
libraryDependencies += "org.scalatestplus.play" %% "scalatestplus-play" % "7.0.2" % Test,
libraryDependencies += "de.mkammerer" % "argon2-jvm" % "2.12",
libraryDependencies += "com.auth0" % "java-jwt" % "4.3.0",
libraryDependencies += "com.github.ben-manes.caffeine" % "caffeine" % "3.2.2",
libraryDependencies += "com.auth0" % "java-jwt" % "4.5.0",
libraryDependencies += "com.github.ben-manes.caffeine" % "caffeine" % "3.2.3",
libraryDependencies += "tools.jackson.module" %% "jackson-module-scala" % "3.0.2",
JsEngineKeys.engineType := JsEngineKeys.EngineType.Node
)

2
knockoutwhist

Submodule knockoutwhist updated: e4322839d1...ec94ecd46c

21
knockoutwhistweb/app/assets/actor/KnockOutWebSocketActor.scala
View File

@@ -1,21 +0,0 @@
package actor
import org.apache.pekko.actor.{Actor, ActorRef}
import org.apache.pekko.http.scaladsl.model.ContentRange.Other
class KnockOutWebSocketActor(
out: ActorRef,
) extends Actor {
def receive: Receive = {
case msg: String =>
out ! s"Received your message: ${msg}"
case other: Other =>
println(s"Received unknown message: $other")
}
def sendJsonToClient(json: String): Unit = {
println("Received event from Controller")
out ! json
}
}

19
knockoutwhistweb/app/controllers/IngameController.scala
View File

@@ -20,7 +20,6 @@ import scala.util.Try
@Singleton
class IngameController @Inject() (
val cc: ControllerComponents,
val podManager: PodManager,
val authAction: AuthAction,
implicit val ec: ExecutionContext
) extends AbstractController(cc) {
@@ -54,7 +53,7 @@ class IngameController @Inject() (
}
def game(gameId: String): Action[AnyContent] = authAction { implicit request: AuthenticatedRequest[AnyContent] =>
val game = podManager.getGame(gameId)
val game = PodManager.getGame(gameId)
game match {
case Some(g) =>
val results = Try {
@@ -70,7 +69,7 @@ class IngameController @Inject() (
}
}
def startGame(gameId: String): Action[AnyContent] = authAction { implicit request: AuthenticatedRequest[AnyContent] =>
val game = podManager.getGame(gameId)
val game = PodManager.getGame(gameId)
val result = Try {
game match {
case Some(g) =>
@@ -111,7 +110,7 @@ class IngameController @Inject() (
}
}
def kickPlayer(gameId: String, playerToKick: String): Action[AnyContent] = authAction { implicit request: AuthenticatedRequest[AnyContent] =>
val game = podManager.getGame(gameId)
val game = PodManager.getGame(gameId)
val playerToKickUUID = UUID.fromString(playerToKick)
val result = Try {
game.get.leaveGame(playerToKickUUID)
@@ -129,7 +128,7 @@ class IngameController @Inject() (
}
}
def leaveGame(gameId: String): Action[AnyContent] = authAction { implicit request: AuthenticatedRequest[AnyContent] =>
val game = podManager.getGame(gameId)
val game = PodManager.getGame(gameId)
val result = Try {
game.get.leaveGame(request.user.id)
}
@@ -147,7 +146,7 @@ class IngameController @Inject() (
}
def playCard(gameId: String): Action[AnyContent] = authAction { implicit request: AuthenticatedRequest[AnyContent] => {
val game = podManager.getGame(gameId)
val game = PodManager.getGame(gameId)
game match {
case Some(g) =>
val jsonBody = request.body.asJson
@@ -218,7 +217,7 @@ class IngameController @Inject() (
}
}
def playDogCard(gameId: String): Action[AnyContent] = authAction { implicit request: AuthenticatedRequest[AnyContent] => {
val game = podManager.getGame(gameId)
val game = PodManager.getGame(gameId)
game match {
case Some(g) => {
val jsonBody = request.body.asJson
@@ -282,7 +281,7 @@ class IngameController @Inject() (
}
}
def playTrump(gameId: String): Action[AnyContent] = authAction { implicit request: AuthenticatedRequest[AnyContent] =>
val game = podManager.getGame(gameId)
val game = PodManager.getGame(gameId)
game match {
case Some(g) =>
val jsonBody = request.body.asJson
@@ -334,7 +333,7 @@ class IngameController @Inject() (
}
}
def playTie(gameId: String): Action[AnyContent] = authAction { implicit request: AuthenticatedRequest[AnyContent] =>
val game = podManager.getGame(gameId)
val game = PodManager.getGame(gameId)
game match {
case Some(g) =>
val jsonBody = request.body.asJson
@@ -388,7 +387,7 @@ class IngameController @Inject() (
def returnToLobby(gameId: String): Action[AnyContent] = authAction { implicit request: AuthenticatedRequest[AnyContent] =>
val game = podManager.getGame(gameId)
val game = PodManager.getGame(gameId)
game match {
case Some(g) =>
val result = Try {

4
knockoutwhistweb/app/controllers/JavaScriptRoutingController.scala
View File

@@ -1,7 +1,6 @@
package controllers
import auth.{AuthAction, AuthenticatedRequest}
import logic.PodManager
import auth.AuthAction
import play.api.mvc.{Action, AnyContent, BaseController, ControllerComponents}
import play.api.routing.JavaScriptReverseRouter
@@ -10,7 +9,6 @@ import javax.inject.Inject
class JavaScriptRoutingController @Inject()(
val controllerComponents: ControllerComponents,
val authAction: AuthAction,
val podManager: PodManager
) extends BaseController {
def javascriptRoutes(): Action[AnyContent] =
Action { implicit request =>

5
knockoutwhistweb/app/controllers/MainMenuController.scala
View File

@@ -17,7 +17,6 @@ import javax.inject.*
class MainMenuController @Inject()(
val controllerComponents: ControllerComponents,
val authAction: AuthAction,
val podManager: PodManager,
val ingameController: IngameController
) extends BaseController {
@@ -39,7 +38,7 @@ class MainMenuController @Inject()(
val playeramount: String = (jsonBody.get \ "playeramount").asOpt[String]
.getOrElse(throw new IllegalArgumentException("Player amount is required."))
val gameLobby = podManager.createGame(
val gameLobby = PodManager.createGame(
host = request.user,
name = gamename,
maxPlayers = playeramount.toInt
@@ -64,7 +63,7 @@ class MainMenuController @Inject()(
(jsValue \ "gameId").asOpt[String]
}
if (gameId.isDefined) {
val game = podManager.getGame(gameId.get)
val game = PodManager.getGame(gameId.get)
game match {
case Some(g) =>
g.addUser(request.user)

3
knockoutwhistweb/app/controllers/PollingController.scala
View File

@@ -24,7 +24,6 @@ object PollingController {
@Singleton
class PollingController @Inject() (
val cc: ControllerComponents,
val podManager: PodManager,
val authAction: AuthAction,
val ingameController: IngameController,
implicit val ec: ExecutionContext
@@ -117,7 +116,7 @@ class PollingController @Inject() (
val playerId = request.user.id
podManager.getGame(gameId) match {
PodManager.getGame(gameId) match {
case Some(game) =>
val playerEventQueue = game.getEventsOfPlayer(playerId)
if (playerEventQueue.nonEmpty) {

26
knockoutwhistweb/app/controllers/WebsocketController.scala
View File

@@ -1,5 +1,10 @@
package controllers
import actor.KnockOutWebSocketActor
import auth.AuthAction
import logic.PodManager
import logic.user.SessionManager
import model.sessions.{UserSession, UserWebsocketActor}
import org.apache.pekko.actor.{ActorRef, ActorSystem, Props}
import org.apache.pekko.stream.Materializer
import play.api.*
@@ -12,17 +17,28 @@ import javax.inject.*
@Singleton
class WebsocketController @Inject()(
cc: ControllerComponents,
val sessionManger: SessionManager,
)(implicit system: ActorSystem, mat: Materializer) extends AbstractController(cc) {
object KnockOutWebSocketActorFactory {
def create(out: ActorRef) = {
Props(new KnockOutWebSocketActor(out))
def create(out: ActorRef, userSession: UserSession): Props = {
Props(new UserWebsocketActor(out, userSession))
}
}
def socket() = WebSocket.accept[String, String] { request =>
def socket(): WebSocket = WebSocket.accept[String, String] { request =>
val session = request.cookies.get("sessionId")
if (session.isEmpty) throw new Exception("No session cookie found")
val userOpt = sessionManger.getUserBySession(session.get.value)
if (userOpt.isEmpty) throw new Exception("Invalid session")
val user = userOpt.get
val game = PodManager.identifyGameOfUser(user)
if (game.isEmpty) throw new Exception("User is not in a game")
val userSession = game.get.getUserSession(user.id)
ActorFlow.actorRef { out =>
println("Connect received")
KnockOutWebSocketActorFactory.create(out)
KnockOutWebSocketActorFactory.create(out, userSession)
}
}

29
knockoutwhistweb/app/logic/PodManager.scala
View File

@@ -11,14 +11,14 @@ import util.GameUtil
import javax.inject.Singleton
import scala.collection.mutable
@Singleton
class PodManager {
object PodManager {
val TTL: Long = System.currentTimeMillis() + 86400000L // 24 hours in milliseconds
val podIp: String = System.getenv("POD_IP")
val podName: String = System.getenv("POD_NAME")
private val sessions: mutable.Map[String, GameLobby] = mutable.Map()
private val userSession: mutable.Map[User, String] = mutable.Map()
private val injector: Injector = Guice.createInjector(KnockOutWebConfigurationModule())
def createGame(
@@ -35,6 +35,7 @@ class PodManager {
host = host
)
sessions += (gameLobby.id -> gameLobby)
userSession += (host -> gameLobby.id)
gameLobby
}
@@ -44,6 +45,30 @@ class PodManager {
private[logic] def removeGame(gameId: String): Unit = {
sessions.remove(gameId)
// Also remove all user sessions associated with this game
userSession.filterInPlace((_, v) => v != gameId)
}
def registerUserToGame(user: User, gameId: String): Boolean = {
if (sessions.contains(gameId)) {
userSession += (user -> gameId)
true
} else {
false
}
}
def unregisterUserFromGame(user: User): Unit = {
userSession.remove(user)
}
def identifyGameOfUser(user: User): Option[GameLobby] = {
userSession.get(user) match {
case Some(gameId) => sessions.get(gameId)
case None => None
}
}
}

15
knockoutwhistweb/app/logic/game/GameLobby.scala
View File

@@ -12,6 +12,7 @@ import de.knockoutwhist.player.{AbstractPlayer, PlayerFactory}
import de.knockoutwhist.rounds.{Match, Round, Trick}
import de.knockoutwhist.utils.events.{EventListener, SimpleEvent}
import exceptions.*
import logic.PodManager
import logic.game.PollingEvents.{CardPlayed, LobbyCreation, LobbyUpdate, NewRound, NewTrick, ReloadEvent}
import model.sessions.{InteractionType, UserSession}
import model.users.User
@@ -69,9 +70,11 @@ class GameLobby private(
if (logic.getCurrentState != Lobby) throw new IllegalStateException("The game has already started!")
val userSession = new UserSession(
user = user,
host = false
host = false,
gameLobby = this
)
users += (user.id -> userSession)
PodManager.registerUserToGame(user, id)
addToQueue(LobbyUpdate)
userSession
}
@@ -156,7 +159,14 @@ class GameLobby private(
if (sessionOpt.isEmpty) {
throw new NotInThisGameException("You are not in this game!")
}
if (sessionOpt.get.host) {
logic.invoke(SessionClosed())
users.clear()
PodManager.removeGame(id)
return
}
users.remove(userId)
PodManager.unregisterUserFromGame(sessionOpt.get.user)
addToQueue(LobbyUpdate)
}
@@ -338,7 +348,8 @@ object GameLobby {
)
lobby.users += (host.id -> new UserSession(
user = host,
host = true
host = true,
gameLobby = lobby
))
lobby
}

22
knockoutwhistweb/app/model/sessions/UserSession.scala
View File

@@ -2,13 +2,19 @@ package model.sessions
import de.knockoutwhist.events.player.{RequestCardEvent, RequestTieChoiceEvent, RequestTrumpSuitEvent}
import de.knockoutwhist.utils.events.SimpleEvent
import logic.game.GameLobby
import model.users.User
import org.apache.pekko.actor.{Actor, ActorRef}
import play.api.libs.json.{JsObject, JsValue, Json}
import util.WebsocketEventMapper
import java.util.UUID
import java.util.concurrent.locks.{Lock, ReentrantLock}
import java.util.concurrent.locks.ReentrantLock
import scala.util.{Failure, Success, Try}
class UserSession(val user: User, val host: Boolean) extends PlayerSession {
class UserSession(val user: User, val host: Boolean, val gameLobby: GameLobby) extends PlayerSession {
var canInteract: Option[InteractionType] = None
var websocketActor: Option[UserWebsocketActor] = None
val lock: ReentrantLock = ReentrantLock()
override def updatePlayer(event: SimpleEvent): Unit = {
@@ -32,4 +38,16 @@ class UserSession(val user: User, val host: Boolean) extends PlayerSession {
canInteract = None
}
def handleWebResponse(eventType: String, data: JsObject): Unit = {
lock.lock()
Try {
eventType match {
case "Ping" =>
// No action needed for Ping
()
}
}
lock.unlock()
}
}

94
knockoutwhistweb/app/model/sessions/UserWebsocketActor.scala Normal file
View File

@@ -0,0 +1,94 @@
package model.sessions
import de.knockoutwhist.utils.events.SimpleEvent
import org.apache.pekko.actor.{Actor, ActorRef}
import play.api.libs.json.{JsObject, JsValue, Json}
import util.WebsocketEventMapper
import scala.util.{Failure, Success, Try}
class UserWebsocketActor(
out: ActorRef,
session: UserSession
) extends Actor {
if (session.websocketActor.isDefined) {
session.websocketActor.foreach(actor => actor.transmitTextToClient("Error: Multiple websocket connections detected. Closing this connection."))
context.stop(self)
} else {
session.websocketActor = Some(this)
}
override def receive: Receive = {
case msg: String =>
val jsonObject = Try {
Json.parse(msg)
}
Try {
jsonObject match {
case Success(value) =>
handle(value)
case Failure(exception) =>
transmitTextToClient(s"Error parsing JSON: ${exception.getMessage}")
}
}.failed.foreach(
ex => transmitTextToClient(s"Error handling message: ${ex.getMessage}")
)
case other =>
}
def transmitEventToClient(event: SimpleEvent): Unit = {
val jsonString = WebsocketEventMapper.toJsonString(event)
out ! jsonString
}
private def transmitJsonToClient(jsonObj: JsObject): Unit = {
out ! jsonObj.toString()
}
private def transmitTextToClient(text: String): Unit = {
out ! text
}
private def handle(json: JsValue): Unit = {
val idOpt = (json \ "id").asOpt[String]
if (idOpt.isEmpty) {
transmitJsonToClient(Json.obj(
"status" -> "error",
"error" -> "Missing 'id' field"
))
return
}
val id = idOpt.get
val eventOpt = (json \ "event").asOpt[String]
if (eventOpt.isEmpty) {
transmitJsonToClient(Json.obj(
"id" -> id,
"event" -> null,
"status" -> "error",
"error" -> "Missing 'event' field"
))
return
}
val event = eventOpt.get
val data = (json \ "data").asOpt[JsObject].getOrElse(Json.obj())
val result = Try {
session.handleWebResponse(event, data)
}
if (result.isSuccess) {
transmitJsonToClient(Json.obj(
"id" -> id,
"event" -> event,
"status" -> "success"
))
} else {
transmitJsonToClient(Json.obj(
"id" -> id,
"event" -> event,
"status" -> "error",
"error" -> result.failed.get.getMessage
))
}
}
}

20
knockoutwhistweb/app/util/WebsocketEventMapper.scala Normal file
View File

@@ -0,0 +1,20 @@
package util
import de.knockoutwhist.utils.events.SimpleEvent
import tools.jackson.databind.json.JsonMapper
import tools.jackson.module.scala.ScalaModule
object WebsocketEventMapper {
private val scalaModule = ScalaModule.builder()
.addAllBuiltinModules()
.supportScala3Classes(true)
.build()
private val mapper = JsonMapper.builder().addModule(scalaModule).build()
def toJsonString(obj: SimpleEvent): String = {
mapper.writeValueAsString(obj)
}
}

1
knockoutwhistweb/app/views/ingame/finishedMatch.scala.html
View File

@@ -34,4 +34,5 @@
});
}
waitForFunction("pollForUpdates").then(fn => fn('@gamelobby.id'));
connectWebSocket()
</script>

1
knockoutwhistweb/app/views/ingame/ingame.scala.html
View File

@@ -104,4 +104,5 @@
});
}
waitForFunction("pollForUpdates").then(fn => fn('@gamelobby.id'));
connectWebSocket()
</script>

1
knockoutwhistweb/app/views/ingame/selecttrump.scala.html
View File

@@ -68,4 +68,5 @@
});
}
waitForFunction("pollForUpdates").then(fn => fn('@gamelobby.id'));
connectWebSocket()
</script>

1
knockoutwhistweb/app/views/ingame/tie.scala.html
View File

@@ -114,4 +114,5 @@
});
}
waitForFunction("pollForUpdates").then(fn => fn('@gamelobby.id'));
connectWebSocket()
</script>

1
knockoutwhistweb/app/views/lobby/lobby.scala.html
View File

@@ -78,4 +78,5 @@
});
}
waitForFunction("pollForUpdates").then(fn => fn('@gamelobby.id'));
connectWebSocket()
</script>

1
knockoutwhistweb/app/views/login/login.scala.html
View File

@@ -35,6 +35,7 @@
particlesJS.load('particles-js', 'assets/conf/particlesjs-config.json', function() {
console.log('callback - particles.js config loaded');
});
disconnectWebSocket();
</script>
<div id="particles-js" style="background-color: rgb(11, 8, 8);
background-size: cover;

1
knockoutwhistweb/app/views/main.scala.html
View File

@@ -25,6 +25,7 @@
</body>
<script src="@routes.JavaScriptRoutingController.javascriptRoutes()" type="text/javascript"></script>
<script src="@routes.Assets.versioned("javascripts/main.js")" type="text/javascript"></script>
<script src="@routes.Assets.versioned("javascripts/ingame.js")" type="text/javascript"></script>
<script src="https://cdn.jsdelivr.net/npm/bootstrap@@5.3.8/dist/js/bootstrap.bundle.min.js" integrity="sha384-FKyoEForCGlyvwx9Hj09JcYn3nv7wiPVlz7YYwJrWVcXK/BmnVDxM+D2scQbITxI" crossorigin="anonymous"></script>
<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
</html>

3
knockoutwhistweb/app/views/mainmenu/creategame.scala.html
View File

@@ -28,3 +28,6 @@
</div>
</div>
</main>
<script>
disconnectWebSocket();
</script>

3
knockoutwhistweb/app/views/mainmenu/rules.scala.html
View File

@@ -175,3 +175,6 @@
</div>
</div>
</main>
<script>
disconnectWebSocket();
</script>

2
knockoutwhistweb/conf/routes
View File

@@ -41,4 +41,4 @@ POST /game/:id/returnToLobby controllers.IngameController.returnT
GET /polling/:gameId controllers.PollingController.polling(gameId: String)
# Websocket
GET /websocket controllers.WebsocketController.socket()
GET /websocket controllers.WebsocketController.socket()

187
knockoutwhistweb/public/javascripts/ingame.js Normal file
View File

@@ -0,0 +1,187 @@
// javascript
let ws = null; // will be created by connectWebSocket()
const pending = new Map(); // id -> { resolve, reject, timer }
const handlers = new Map(); // eventType -> handler(data) -> (value|Promise)
let timer = null;
// helper to attach message/error/close handlers to a socket
function setupSocketHandlers(socket) {
socket.onmessage = (event) => {
console.debug("SERVER RESPONSE:", event.data);
let msg;
try {
msg = JSON.parse(event.data);
} catch (e) {
console.debug("Non-JSON message from server:", event.data, e);
return;
}
const id = msg.id;
const eventType = msg.event;
const status = msg.status;
const data = msg.data;
if (id && typeof status === "string") {
const entry = pending.get(id);
if (!entry) return;
clearTimeout(entry.timer);
pending.delete(id);
if (status === "success") {
entry.resolve(data === undefined ? {} : data);
} else {
entry.reject(new Error(msg.error || "Server returned error"));
}
return;
}
if (id && eventType) {
const handler = handlers.get(eventType);
const sendResponse = (respData) => {
const response = { id: id, event: eventType, data: respData === undefined ? {} : respData };
if (socket && socket.readyState === WebSocket.OPEN) {
socket.send(JSON.stringify(response));
} else {
console.warn("Cannot send response, websocket not open");
}
};
if (!handler) {
// no handler: respond with an error object in data so server can fail it
sendResponse({ error: "No handler for event: " + eventType });
return;
}
try {
Promise.resolve(handler(data === undefined ? {} : data))
.then(result => sendResponse(result))
.catch(err => sendResponse({ error: err?.message ? err.message : String(err) }));
} catch (err) {
sendResponse({ error: err?.message ? err.message : String(err) });
}
}
};
socket.onerror = (error) => {
console.error("WebSocket Error:", error);
if (timer) clearInterval(timer);
for (const [id, entry] of pending.entries()) {
clearTimeout(entry.timer);
entry.reject(new Error("WebSocket error/closed"));
pending.delete(id);
}
if (socket.readyState === WebSocket.OPEN) socket.close(1000, "Unexpected error.");
};
socket.onclose = (event) => {
if (timer) clearInterval(timer);
for (const [id, entry] of pending.entries()) {
clearTimeout(entry.timer);
entry.reject(new Error("WebSocket closed"));
pending.delete(id);
}
if (event.wasClean) {
console.log(`Connection closed cleanly, code=${event.code} reason=${event.reason}`);
} else {
console.warn('Connection died unexpectedly.');
}
};
}
// connect/disconnect helpers
function connectWebSocket(url = "ws://localhost:9000/websocket") {
if (ws && ws.readyState === WebSocket.OPEN) return Promise.resolve();
if (ws && ws.readyState === WebSocket.CONNECTING) {
// already connecting - return a promise that resolves on open
return new Promise((resolve, reject) => {
const prevOnOpen = ws.onopen;
const prevOnError = ws.onerror;
ws.onopen = (ev) => {
if (prevOnOpen) prevOnOpen(ev);
resolve();
};
ws.onerror = (err) => {
if (prevOnError) prevOnError(err);
reject(err);
};
});
}
ws = new WebSocket(url);
setupSocketHandlers(ws);
return new Promise((resolve, reject) => {
ws.onopen = () => {
console.log("WebSocket connection established!");
// start heartbeat
timer = setInterval(() => {
if (ws && ws.readyState === WebSocket.OPEN) {
sendEventAndWait("ping", {}).then(
() => console.debug("PING RESPONSE RECEIVED"),
).catch(
(err) => console.warn("PING ERROR:", err.message),
);
console.debug("PING SENT");
}
}, 5000);
resolve();
};
ws.onerror = (err) => {
reject(err);
};
});
}
function disconnectWebSocket(code = 1000, reason = "Client disconnect") {
if (timer) {
clearInterval(timer);
timer = null;
}
if (ws) {
try { ws.close(code, reason); } catch (e) {}
ws = null;
}
}
function sendEvent(eventType, eventData) {
if (!ws || ws.readyState !== WebSocket.OPEN) {
console.warn("WebSocket is not open. Unable to send message.");
return;
}
const id = Date.now().toString(36) + Math.random().toString(36).substring(2, 9);
const message = { id: id, event: eventType, data: eventData };
ws.send(JSON.stringify(message));
console.debug("SENT:", message);
}
function sendEventAndWait(eventType, eventData, timeoutMs = 10000) {
if (!ws || ws.readyState !== WebSocket.OPEN) {
return Promise.reject(new Error("WebSocket is not open"));
}
const id = Date.now().toString(36) + Math.random().toString(36).substring(2, 9);
const message = { id: id, event: eventType, data: eventData };
const p = new Promise((resolve, reject) => {
const timerId = setTimeout(() => {
if (pending.has(id)) {
pending.delete(id);
reject(new Error(`No response within ${timeoutMs}ms for id=${id}`));
}
}, timeoutMs);
pending.set(id, { resolve, reject, timer: timerId });
});
ws.send(JSON.stringify(message));
console.debug("SENT (await):", message);
return p;
}
function onEvent(eventType, handler) {
handlers.set(eventType, handler);
}
globalThis.sendEvent = sendEvent;
globalThis.sendEventAndWait = sendEventAndWait;
globalThis.onEvent = onEvent;
globalThis.connectWebSocket = connectWebSocket;
globalThis.disconnectWebSocket = disconnectWebSocket;
globalThis.isWebSocketConnected = () => !!ws && ws.readyState === WebSocket.OPEN;

19
knockoutwhistweb/public/javascripts/main.js
View File

@@ -664,23 +664,4 @@ function sendPlayCardRequest(jsonObj, gameId, cardobject, dog) {
})
})
}
const ws = new WebSocket("ws://localhost:9000/websocket");
ws.onopen = (event) => {
console.log("WebSocket connection established!");
ws.send("Client is now connected and ready.");
};
ws.onmessage = (event) => {
console.log("SERVER RESPONSE:", event.data);
};
ws.onerror = (error) => {
console.error("WebSocket Error:", error);
};
ws.onclose = (event) => {
if (event.wasClean) {
console.log(`Connection closed cleanly, code=${event.code} reason=${event.reason}`);
} else {
console.warn('Connection died unexpectedly.');
}
};