+ // Associative array page --> sid --> tmpId --> socket
+ // "page" is either "/" for hall or "/game/some_gid" for Game,
+ // tmpId is required if a same user (browser) has different tabs
+ let clients = {};
+ wss.on("connection", (socket, req) => {
+ const query = getJsonFromUrl(req.url);
+ const sid = query["sid"];
+ const tmpId = query["tmpId"];
+ const page = query["page"];
+ const notifyRoom = (page,code,obj={}) => {
+ if (!clients[page])
+ return;
+ Object.keys(clients[page]).forEach(k => {
+ Object.keys(clients[page][k]).forEach(x => {
+ if (k == sid && x == tmpId)
+ return;
+ send(clients[page][k][x], Object.assign({code:code, from:sid}, obj));
+ });
+ });
+ };
+ const deleteConnexion = () => {
+ if (!clients[page] || !clients[page][sid] || !clients[page][sid][tmpId])
+ return; //job already done
+ delete clients[page][sid][tmpId];
+ if (Object.keys(clients[page][sid]).length == 0)
+ {
+ delete clients[page][sid];
+ if (Object.keys(clients[page]) == 0)
+ delete clients[page];
+ }
+ };
+ const doDisconnect = () => {
+ deleteConnexion();
+ if (!clients[page] || !clients[page][sid])
+ {
+ // I effectively disconnected from this page:
+ notifyRoom(page, "disconnect");
+ if (page.indexOf("/game/") >= 0)
+ notifyRoom("/", "gdisconnect", {page:page});
+ }
+ };
+ const messageListener = (objtxt) => {
+ let obj = JSON.parse(objtxt);
+ switch (obj.code)
+ {
+ // Wait for "connect" message to notify connection to the room,
+ // because if game loading is slow the message listener might
+ // not be ready too early.
+ case "connect":
+ {
+ notifyRoom(page, "connect");
+ if (page.indexOf("/game/") >= 0)
+ notifyRoom("/", "gconnect", {page:page});
+ break;
+ }
+ case "disconnect":
+ // When page changes:
+ doDisconnect();
+ break;
+ case "killme":
+ {
+ // Self multi-connect: manual removal + disconnect
+ const doKill = (pg) => {
+ Object.keys(clients[pg][obj.sid]).forEach(x => {
+ send(clients[pg][obj.sid][x], {code: "killed"});
+ });
+ delete clients[pg][obj.sid];
+ };
+ const disconnectFromOtherConnexion = (pg,code,o={}) => {
+ Object.keys(clients[pg]).forEach(k => {
+ if (k != obj.sid)
+ {
+ Object.keys(clients[pg][k]).forEach(x => {
+ send(clients[pg][k][x], Object.assign({code:code, from:obj.sid}, o));
+ });
+ }
+ });
+ };
+ Object.keys(clients).forEach(pg => {
+ if (!!clients[pg][obj.sid])
+ {
+ doKill(pg);
+ disconnectFromOtherConnexion(pg, "disconnect");
+ if (pg.indexOf("/game/") >= 0 && !!clients["/"])
+ disconnectFromOtherConnexion("/", "gdisconnect", {page:pg});
+ }
+ });
+ break;
+ }
+ case "pollclients": //from Hall or Game
+ {
+ let sockIds = [];
+ Object.keys(clients[page]).forEach(k => {
+ // Avoid polling myself: no new information to get
+ if (k != sid)
+ sockIds.push(k);
+ });
+ send(socket, {code:"pollclients", sockIds:sockIds});
+ break;
+ }
+ case "pollclientsandgamers": //from Hall
+ {
+ let sockIds = [];
+ Object.keys(clients["/"]).forEach(k => {
+ // Avoid polling myself: no new information to get
+ if (k != sid)
+ sockIds.push({sid:k});
+ });
+ // NOTE: a "gamer" could also just be an observer
+ Object.keys(clients).forEach(p => {
+ if (p != "/")
+ {
+ Object.keys(clients[p]).forEach(k => {
+ if (k != sid)
+ sockIds.push({sid:k, page:p}); //page needed for gamers
+ });
+ }
+ });
+ send(socket, {code:"pollclientsandgamers", sockIds:sockIds});
+ break;
+ }
+
+ // Asking something: from is fully identified,
+ // but the requested resource can be from any tmpId (except current!)
+ case "askidentity":
+ case "asklastate":
+ case "askchallenge":
+ case "askgame":
+ case "askfullgame":
+ {
+ const pg = obj.page || page; //required for askidentity and askgame
+ const tmpIds = Object.keys(clients[pg][obj.target]);
+ if (obj.target == sid) //targetting myself
+ {
+ const idx_myTmpid = tmpIds.findIndex(x => x == tmpId);
+ if (idx_myTmpid >= 0)
+ tmpIds.splice(idx_myTmpid, 1);
+ }
+ const tmpId_idx = Math.floor(Math.random() * tmpIds.length);
+ send(clients[pg][obj.target][tmpIds[tmpId_idx]], {code:obj.code, from:[sid,tmpId,page]});
+ break;
+ }