// 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 page --> sid --> tmpId --> socket
// "page" is either "/" for hall or "/game/some_gid" for Game,
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;
- clients[page][k][x].send(JSON.stringify(Object.assign(
- {code:code, from:sid}, obj)));
+ if (k == sid && x == tmpId) return;
+ send(
+ clients[page][k][x],
+ Object.assign({code: code, from: sid}, obj)
+ );
});
});
};
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)
- {
+ if (Object.keys(clients[page][sid]).length == 0) {
delete clients[page][sid];
- if (Object.keys(clients[page]) == 0)
+ if (Object.keys(clients[page]).length == 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);
- if (!!obj.target)
- {
- // Check if receiver is connected, because there may be some lag
- // between a client disconnects and another notice.
- if (Array.isArray(obj.target))
- {
- if (!clients[page][obj.target[0]] ||
- !clients[page][obj.target[0]][obj.target[1]])
- {
- return;
- }
- }
- else if (!clients[page][obj.target])
- return;
- }
- 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":
- {
+ case "connect": {
notifyRoom(page, "connect");
if (page.indexOf("/game/") >= 0)
notifyRoom("/", "gconnect", {page:page});
}
case "disconnect":
// When page changes:
- deleteConnexion();
- if (!clients[page][sid])
- {
- // I effectively disconnected from this page:
- notifyRoom(page, "disconnect");
- if (page.indexOf("/game/") >= 0)
- notifyRoom("/", "gdisconnect", {page:page});
- }
+ doDisconnect();
break;
- case "pollclients": //from Hall or Game
- {
+ 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 => {
- // Poll myself if I'm on at least another tab (same page)
- if (k != sid || Object.keys(clients["/"][k]).length >= 2)
- sockIds.push(k);
+ // Avoid polling myself: no new information to get
+ if (k != sid) sockIds.push(k);
});
- socket.send(JSON.stringify({code:"pollclients", sockIds:sockIds}));
+ send(socket, {code: "pollclients", sockIds: sockIds});
break;
}
- case "pollclientsandgamers": //from Hall
- {
+ case "pollclientsandgamers": {
+ // From Hall
let sockIds = [];
Object.keys(clients["/"]).forEach(k => {
- // Poll myself if I'm on at least another tab (same page)
- if (k != sid || Object.keys(clients["/"][k]).length >= 2)
- sockIds.push({sid: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 != "/")
- {
+ if (p != "/") {
Object.keys(clients[p]).forEach(k => {
- if (k != sid)
- sockIds.push({sid:k, page:p}); //page needed for gamers
+ // 'page' indicator is needed for gamers
+ if (k != sid) sockIds.push({sid:k, page:p});
});
}
});
- socket.send(JSON.stringify({code:"pollclientsandgamers", sockIds:sockIds}));
+ send(socket, {code: "pollclientsandgamers", sockIds: sockIds});
break;
}
case "asklastate":
case "askchallenge":
case "askgame":
- case "askfullgame":
- {
- const tmpIds = Object.keys(clients[page][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);
+ case "askfullgame": {
+ const pg = obj.page || page; //required for askidentity and askgame
+ // In cas askfullgame to wrong SID for example, would crash:
+ if (!!clients[pg] && !!clients[pg][obj.target]) {
+ 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]}
+ );
}
- const tmpId_idx = Math.floor(Math.random() * tmpIds.length);
- clients[page][obj.target][tmpIds[tmpId_idx]].send(
- JSON.stringify({code:obj.code, from:[sid,tmpId]}));
break;
}
case "startgame":
Object.keys(clients[page][obj.target]).forEach(x => {
if (obj.target != sid || x != tmpId)
- {
- clients[page][obj.target][x].send(JSON.stringify(
- {code:obj.code, data:obj.data}));
- }
+ send(
+ clients[page][obj.target][x],
+ {code: obj.code, data: obj.data}
+ );
});
break;
case "newchallenge":
case "newgame":
case "deletechallenge":
- case "newmove":
case "resign":
case "abort":
case "drawoffer":
case "draw":
- notifyRoom(page, obj.code, {data:obj.data});
+ notifyRoom(page, obj.code, {data: obj.data});
+ break;
+
+ 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],
+ Object.assign({code: "newmove"}, dataWithFrom)
+ );
+ });
+ } else {
+ // NOTE: data.from is useful only to opponent
+ notifyRoom(page, "newmove", dataWithFrom);
+ }
+ break;
+ }
+ 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]],
+ {code: "gotmove", data: obj.data}
+ );
+ }
+ break;
+
+ case "result":
+ // Special case: notify all, 'transroom': Game --> Hall
+ notifyRoom("/", "result", {gid: obj.gid, score: obj.score});
+ break;
+
+ case "mconnect":
+ // Special case: notify some game rooms that
+ // I'm watching game state from MyGames
+ // TODO: this code is ignored for now
+ obj.gids.forEach(gid => {
+ const pg = "/game/" + gid;
+ Object.keys(clients[pg]).forEach(s => {
+ Object.keys(clients[pg][s]).forEach(x => {
+ send(
+ clients[pg][s][x],
+ {code: "mconnect", data: obj.data}
+ );
+ });
+ });
+ });
+ break;
+ case "mdisconnect":
+ // TODO
+ // Also TODO: pass newgame to MyGames, and gameover (result)
break;
// Passing, relaying something: from isn't needed,
case "game":
case "identity":
case "lastate":
- clients[page][obj.target[0]][obj.target[1]].send(JSON.stringify(
- {code:obj.code, data:obj.data}));
+ {
+ 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 undefined
+ if (!!clients[pg] && !!clients[pg][obj.target[0]])
+ send(clients[pg][obj.target[0]][obj.target[1]], {code:obj.code, data:obj.data});
break;
+ }
}
};
const closeListener = () => {
- // For tab or browser closing:
- deleteConnexion();
+ // For browser or tab closing (including page reload):
+ doDisconnect();
};
// Update clients object: add new connexion
if (!clients[page])