-const url = require('url');
-
// Node version in Ubuntu 16.04 does not know about URL class
-// NOTE: url is already transformed, without ?xxx=yyy... parts
-function getJsonFromUrl(url)
-{
+function getJsonFromUrl(url) {
const query = url.substr(2); //starts with "/?"
let result = {};
query.split("&").forEach((part) => {
return result;
}
+// Helper to safe-send some message through a (web-)socket:
+function send(socket, message) {
+ if (!!socket && socket.readyState == 1)
+ socket.send(JSON.stringify(message));
+}
+
module.exports = function(wss) {
- // Associative array sid --> tmpId --> {socket, page},
+ // Associative array page --> sid --> tmpId --> socket
// "page" is either "/" for hall or "/game/some_gid" for Game,
+ // or "/mygames" for Mygames page (simpler: no 'people' array).
// tmpId is required if a same user (browser) has different tabs
let clients = {};
+ // NOTE: only purpose of sidToPages = know when to delete keys in idToSid
+ let sidToPages = {};
+ let idToSid = {};
wss.on("connection", (socket, req) => {
const query = getJsonFromUrl(req.url);
const sid = query["sid"];
+ const id = query["id"];
const tmpId = query["tmpId"];
- const notifyRoom = (page,code,obj={},excluded=[]) => {
- Object.keys(clients).forEach(k => {
- if (k in excluded)
- return;
- if (k != sid && clients[k].page == page)
- {
- clients[k].sock.send(JSON.stringify(Object.assign(
- {code:code, from:[sid,tmpId]}, obj)));
- }
+ const page = query["page"];
+ const notifyRoom = (page, code, obj={}, except) => {
+ if (!clients[page]) return;
+ except = except || [];
+ Object.keys(clients[page]).forEach(k => {
+ if (except.includes(k)) return;
+ Object.keys(clients[page][k]).forEach(x => {
+ if (k == sid && x == tmpId) return;
+ send(
+ clients[page][k][x].socket,
+ Object.assign({ code: code, from: [sid, tmpId] }, 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];
+ const pgIndex = sidToPages[sid].findIndex(pg => pg == page);
+ sidToPages[sid].splice(pgIndex, 1);
+ if (Object.keys(clients[page]).length == 0)
+ delete clients[page];
+ // Am I totally offline?
+ if (sidToPages[sid].length == 0) {
+ delete sidToPages[sid];
+ delete idToSid[id];
+ }
+ }
+ };
+
+ const doDisconnect = () => {
+ deleteConnexion();
+ // Nothing to notify when disconnecting from MyGames page:
+ if (page != "/mygames") {
+ notifyRoom(page, "disconnect");
+ if (page.indexOf("/game/") >= 0)
+ notifyRoom("/", "gdisconnect", { page: page });
+ }
+ };
const messageListener = (objtxt) => {
let obj = JSON.parse(objtxt);
- if (!!obj.target && !clients[obj.target])
- return; //receiver not connected, nothing we can do
- switch (obj.code)
- {
+ 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":
- {
- const curPage = clients[sid][tmpId].page;
- notifyRoom(curPage, "connect"); //Hall or Game
- if (curPage.indexOf("/game/") >= 0)
- notifyRoom("/", "gconnect"); //notify main hall
+ case "connect": {
+ notifyRoom(page, "connect");
+ if (page.indexOf("/game/") >= 0)
+ notifyRoom("/", "gconnect", { page: page });
break;
}
case "disconnect":
- {
- const oldPage = obj.page;
- notifyRoom(oldPage, "disconnect"); //Hall or Game
- if (oldPage.indexOf("/game/") >= 0)
- notifyRoom("/", "gdisconnect"); //notify main hall
+ // When page changes:
+ doDisconnect();
break;
- }
- case "pollclients":
- {
- const curPage = clients[sid][tmpId].page;
- let sockIds = {}; //result, object sid ==> [tmpIds]
- Object.keys(clients).forEach(k => {
- Object.keys(clients[k]).forEach(x => {
- if ((k != sid || x != tmpId)
- && clients[k][x].page == curPage)
- {
- if (!sockIds[k])
- sockIds[k] = [x];
- else
- sockIds[k].push(x);
- }
+ case "pollclients": {
+ // From Game
+ let sockIds = {};
+ Object.keys(clients[page]).forEach(k => {
+ sockIds[k] = {};
+ Object.keys(clients[page][k]).forEach(x => {
+ // Avoid polling my tmpId: no information to get
+ if (k != sid || x != tmpId)
+ sockIds[k][x] = { focus: clients[page][k][x].focus };
});
});
- socket.send(JSON.stringify({code:"pollclients", sockIds:sockIds}));
+ send(socket, { code: "pollclients", sockIds: sockIds });
break;
}
- case "pollgamers":
- {
+ case "pollclientsandgamers": {
+ // From Hall
let sockIds = {};
- Object.keys(clients).forEach(k => {
- Object.keys(clients[k]).forEach(x => {
- if ((k != sid || x != tmpId)
- && clients[k][x].page.indexOf("/game/") >= 0)
- {
- if (!sockIds[k])
- sockIds[k] = [x];
- else
- sockIds[k].push(x);
+ Object.keys(clients["/"]).forEach(k => {
+ sockIds[k] = {};
+ Object.keys(clients[page][k]).forEach(x => {
+ // Avoid polling my tmpId: no information to get
+ if (k != sid || x != tmpId) {
+ sockIds[k][x] = {
+ page: "/",
+ focus: clients[page][k][x].focus
+ };
}
});
});
- socket.send(JSON.stringify({code:"pollgamers", sockIds:sockIds}));
+ // NOTE: a "gamer" could also just be an observer
+ Object.keys(clients).forEach(p => {
+ if (p.indexOf("/game/") >= 0) {
+ Object.keys(clients[p]).forEach(k => {
+ if (!sockIds[k]) sockIds[k] = {};
+ Object.keys(clients[p][k]).forEach(x => {
+ if (k != sid || x != tmpId) {
+ sockIds[k][x] = {
+ page: p,
+ focus: clients[p][k][x].focus
+ };
+ }
+ });
+ });
+ }
+ });
+ 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":
- {
- // Identity only depends on sid, so select a tmpId at random
- const tmpIds = Object.keys(clients[obj.target]);
- const tmpId_idx = Math.floor(Math.random() * tmpIds.length);
- clients[obj.target][tmpIds[tmpId_idx]].sock.send(JSON.stringify(
- {code:"askidentity",from:[sid,tmpId]}));
- break;
- }
case "asklastate":
- clients[obj.target[0]][obj.target[1]].sock.send(JSON.stringify(
- {code:"asklastate",from:[sid,tmpId]}));
- break;
- case "askchallenge":
- clients[obj.target[0]][obj.target[1]].sock.send(JSON.stringify(
- {code:"askchallenge",from:[sid,tmpId]}));
- break;
- case "askgames":
- {
- // Check all clients playing, and send them a "askgame" message
- // game ID --> [ sid1 --> array of tmpIds, sid2 --> array of tmpIds]
- let gameSids = {};
- const regexpGid = /\/[a-zA-Z0-9]+$/;
- Object.keys(clients).forEach(k => {
- Object.keys(clients[k]).forEach(x => {
- if ((k != sid || x != tmpId)
- && clients[k][x].page.indexOf("/game/") >= 0)
- {
- const gid = clients[k][x].page.match(regexpGid)[0];
- if (!gameSids[gid])
- gameSids[gid] = [{k: [x]}];
- else if (k == Object.keys(gameSids[gid][0])[0])
- gameSids[gid][0][k].push(x);
- else if (gameSids[gid].length == 1)
- gameSids[gid].push({k: [x]});
- else
- Object.values(gameSids[gid][1]).push(x);
+ case "askchallenges":
+ case "askgame": {
+ const pg = obj.page || page; //required for askidentity and askgame
+ if (!!clients[pg] && !!clients[pg][obj.target]) {
+ let 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);
}
- });
- // Request only one client out of 2 (TODO: this is a bit heavy)
- // Alt: ask game to all, and filter later?
- Object.keys(gameSids).forEach(gid => {
- const L = gameSids[gid].length;
- const sidIdx = L > 1
- ? Math.floor(Math.random() * Math.floor(L))
- : 0;
- const tmpIdx = Object.values(gameSids[gid][sidIdx]
- const rid = gameSids[gid][sidIdx][tmpIdx];
- clients[sidIdx][tmpIdx].sock.send(JSON.stringify(
- {code:"askgame", from: [sid,tmpId]}));
- });
+ if (tmpIds.length > 0) {
+ const ttmpId = tmpIds[Math.floor(Math.random() * tmpIds.length)];
+ send(
+ clients[pg][obj.target][ttmpId].socket,
+ { code: obj.code, from: [sid,tmpId,page] }
+ );
+ }
+ }
break;
}
- case "askgame":
- clients[obj.target].sock.send(JSON.stringify(
- {code:"askgame", from:sid}));
- break;
- case "askfullgame":
- clients[obj.target].sock.send(JSON.stringify(
- {code:"askfullgame", from:sid}));
- break;
- case "fullgame":
- clients[obj.target].sock.send(JSON.stringify(
- {code:"fullgame", game:obj.game}));
- break;
- case "identity":
- clients[obj.target].sock.send(JSON.stringify(
- {code:"identity",user:obj.user}));
+
+ // Special situation of the previous "case":
+ // Full game can be asked to any observer.
+ case "askfullgame": {
+ if (!!clients[page]) {
+ let sids = Object.keys(clients[page]).filter(k => k != sid);
+ if (sids.length > 0) {
+ // Pick a SID at random in this set, and ask full game:
+ const rid = sids[Math.floor(Math.random() * sids.length)];
+ // ..to a random tmpId:
+ const tmpIds = Object.keys(clients[page][rid]);
+ const rtmpId = tmpIds[Math.floor(Math.random() * tmpIds.length)];
+ send(
+ clients[page][rid][rtmpId].socket,
+ { code: "askfullgame", from: [sid,tmpId] }
+ );
+ } else {
+ // I'm the only person who have the game for the moment:
+ send(socket, { code: "fullgame", data: { empty: true } });
+ }
+ }
break;
+ }
+
+ // Some Hall events: target all tmpId's (except mine),
case "refusechallenge":
- clients[obj.target].sock.send(JSON.stringify(
- {code:"refusechallenge", cid:obj.cid, from:sid}));
- break;
- case "deletechallenge":
- clients[obj.target].sock.send(JSON.stringify(
- {code:"deletechallenge", cid:obj.cid, from:sid}));
+ case "startgame":
+ Object.keys(clients[page][obj.target]).forEach(x => {
+ if (obj.target != sid || x != tmpId)
+ send(
+ clients[page][obj.target][x].socket,
+ { code: obj.code, data: obj.data }
+ );
+ });
break;
+
+ // Notify all room: mostly game events
+ case "newchat":
+ case "newchallenge":
+ case "deletechallenge_s":
case "newgame":
- clients[obj.target].sock.send(JSON.stringify(
- {code:"newgame", gameInfo:obj.gameInfo, cid:obj.cid}));
+ case "resign":
+ case "abort":
+ case "drawoffer":
+ case "rematchoffer":
+ case "draw":
+ // "newgame" message can provide a page (corr Game --> Hall)
+ notifyRoom(
+ obj.page || page, obj.code, {data: obj.data}, obj.excluded);
break;
- case "challenge":
- clients[obj.target].sock.send(JSON.stringify(
- {code:"challenge", chall:obj.chall, from:sid}));
+
+ case "rnewgame":
+ // A rematch game started:
+ notifyRoom(page, "newgame", {data: obj.data});
+ // Explicitely notify Hall if gametype == corr.
+ // Live games will be polled from Hall after gconnect event.
+ if (obj.data.cadence.indexOf('d') >= 0)
+ notifyRoom("/", "newgame", {data: obj.data});
break;
- case "game":
- if (!!obj.target)
- {
- clients[obj.target].sock.send(JSON.stringify(
- {code:"game", game:obj.game, from:sid}));
- }
- else
- {
- // Notify all room except opponent and me:
- notifyRoom("/", "game", {game:obj.game}, [obj.oppsid]);
+
+ case "newmove": {
+ const dataWithFrom = { from: [sid,tmpId], data: obj.data };
+ // Special case re-send newmove only to opponent:
+ if (!!obj.target && !!clients[page][obj.target]) {
+ Object.keys(clients[page][obj.target]).forEach(x => {
+ send(
+ clients[page][obj.target][x].socket,
+ Object.assign({ code: "newmove" }, dataWithFrom)
+ );
+ });
+ } else {
+ // NOTE: data.from is useful only to opponent
+ notifyRoom(page, "newmove", dataWithFrom);
}
break;
- case "newchat":
- notifyRoom(clients[sid].page, "newchat", {chat:obj.chat});
- break;
- // TODO: WebRTC instead in this case (most demanding?)
- // --> Or else: at least do a "notifyRoom" (also for draw, resign...)
- case "newmove":
- clients[obj.target].sock.send(JSON.stringify(
- {code:"newmove", move:obj.move}));
+ }
+ case "gotmove":
+ if (
+ !!clients[page][obj.target[0]] &&
+ !!clients[page][obj.target[0]][obj.target[1]]
+ ) {
+ send(
+ clients[page][obj.target[0]][obj.target[1]].socket,
+ { code: "gotmove" }
+ );
+ }
break;
- case "lastate":
- clients[obj.target].sock.send(JSON.stringify(
- {code:"lastate", state:obj.state}));
+
+ case "result":
+ // Special case: notify all, 'transroom': Game --> Hall
+ notifyRoom("/", "result", { gid: obj.gid, score: obj.score });
break;
- case "resign":
- clients[obj.target].sock.send(JSON.stringify(
- {code:"resign", side:obj.side}));
+
+ case "mabort": {
+ const gamePg = "/game/" + obj.gid;
+ if (!!clients[gamePg] && !!clients[gamePg][obj.target]) {
+ Object.keys(clients[gamePg][obj.target]).forEach(x => {
+ send(
+ clients[gamePg][obj.target][x].socket,
+ { code: "abort" }
+ );
+ });
+ }
break;
- case "abort":
- clients[obj.target].sock.send(JSON.stringify(
- {code:"abort"}));
+ }
+
+ case "notifyscore":
+ case "notifyturn":
+ case "notifynewgame":
+ if (!!clients["/mygames"]) {
+ obj.targets.forEach(t => {
+ const k = t.sid || idToSid[t.id];
+ if (!!clients["/mygames"][k]) {
+ Object.keys(clients["/mygames"][k]).forEach(x => {
+ send(
+ clients["/mygames"][k][x].socket,
+ { code: obj.code, data: obj.data }
+ );
+ });
+ }
+ });
+ }
break;
- case "drawoffer":
- clients[obj.target].sock.send(JSON.stringify(
- {code:"drawoffer"}));
+
+ case "getfocus":
+ case "losefocus":
+ if (
+ !!clients[page] &&
+ !!clients[page][sid] &&
+ !!clients[page][sid][tmpId]
+ ) {
+ clients[page][sid][tmpId].focus = (obj.code == "getfocus");
+ }
+ if (page == "/") notifyRoom("/", obj.code, { page: "/" }, [sid]);
+ else {
+ // Notify game room + Hall:
+ notifyRoom(page, obj.code, {}, [sid]);
+ notifyRoom("/", obj.code, { page: page }, [sid]);
+ }
break;
- case "draw":
- clients[obj.target].sock.send(JSON.stringify(
- {code:"draw", message:obj.message}));
+
+ // Passing, relaying something: from isn't needed,
+ // but target is fully identified (sid + tmpId)
+ case "challenges":
+ case "fullgame":
+ case "game":
+ case "identity":
+ case "lastate":
+ {
+ const pg = obj.target[2] || page; //required for identity and game
+ // NOTE: if in game we ask identity to opponent still in Hall, but
+ // leaving Hall, clients[pg] or clients[pg][target] could be undef.
+ if (!!clients[pg] && !!clients[pg][obj.target[0]]) {
+ send(
+ clients[pg][obj.target[0]][obj.target[1]].socket,
+ { code:obj.code, data:obj.data }
+ );
+ }
break;
+ }
}
};
const closeListener = () => {
- delete clients[sid];
+ // For browser or tab closing (including page reload):
+ doDisconnect();
};
- if (!!clients[sid])
- {
- // Turn off old sock through current client:
- clients[sid].sock.send(JSON.stringify({code:"duplicate"}));
- }
- // Potentially replace current connection:
- clients[sid] = {sock: socket, page: query["page"]};
+ // Update clients object: add new connexion
+ const newElt = { socket: socket, focus: true };
+ if (!clients[page])
+ clients[page] = { [sid]: {[tmpId]: newElt } };
+ else if (!clients[page][sid])
+ clients[page][sid] = { [tmpId]: newElt };
+ else
+ clients[page][sid][tmpId] = newElt;
+ // Also update helper correspondances
+ if (!idToSid[id]) idToSid[id] = sid;
+ if (!sidToPages[sid]) sidToPages[sid] = [];
+ const pgIndex = sidToPages[sid].findIndex(pg => pg == page);
+ if (pgIndex === -1) sidToPages[sid].push(page);
socket.on("message", messageListener);
socket.on("close", closeListener);
});
projects / vchess.git / blobdiff