From: Benjamin Auder <benjamin.auder@somewhere>
Date: Wed, 12 Feb 2020 19:21:51 +0000 (+0100)
Subject: Fix trans-pages events askidentity and askgame
X-Git-Url: https://git.auder.net/DESCRIPTION?a=commitdiff_plain;h=8b152adaed809e759bb2507ade9d2273783c4a39;p=vchess.git

Fix trans-pages events askidentity and askgame
---

diff --git a/client/src/views/Hall.vue b/client/src/views/Hall.vue
index f120ec97..ae04b7d1 100644
--- a/client/src/views/Hall.vue
+++ b/client/src/views/Hall.vue
@@ -302,7 +302,7 @@ export default {
             if (s.sid != this.st.user.sid && !identityAsked[s.sid])
             {
               identityAsked[s.sid] = true;
-              this.send("askidentity", {target:s.sid});
+              this.send("askidentity", {target:s.sid, page:s.page || "/"});
             }
             if (!this.people[s.sid])
               this.$set(this.people, s.sid, {id:0, name:"", pages:[s.page || "/"]});
@@ -311,7 +311,7 @@ export default {
             if (!s.page) //peer is in Hall
               this.send("askchallenge", {target:s.sid});
             else //peer is in Game
-              this.send("askgame", {target:s.sid});
+              this.send("askgame", {target:s.sid, page:s.page});
           });
           break;
         }
@@ -326,7 +326,7 @@ export default {
             if (data.code == "connect")
               this.send("askchallenge", {target:data.from});
             else
-              this.send("askgame", {target:data.from});
+              this.send("askgame", {target:data.from, page:data.page});
           }
           else
           {
@@ -337,7 +337,7 @@ export default {
           if (this.people[data.from].id == 0)
           {
             this.newConnect[data.from] = true; //for self multi-connects tests
-            this.send("askidentity", {target:data.from});
+            this.send("askidentity", {target:data.from, page:data.page || "/"});
           }
           break;
         case "disconnect":
diff --git a/server/sockets.js b/server/sockets.js
index f1853b50..da748f06 100644
--- a/server/sockets.js
+++ b/server/sockets.js
@@ -13,6 +13,13 @@ function getJsonFromUrl(url)
   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,
@@ -30,8 +37,7 @@ module.exports = function(wss) {
         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)));
+          send(clients[page][k][x], Object.assign({code:code, from:sid}, obj));
         });
       });
     };
@@ -48,21 +54,6 @@ module.exports = function(wss) {
     };
     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)
       {
         // Wait for "connect" message to notify connection to the room,
@@ -91,7 +82,7 @@ module.exports = function(wss) {
           // Self multi-connect: manual removal + disconnect
           const doKill = (pg) => {
             Object.keys(clients[pg][obj.sid]).forEach(x => {
-              clients[pg][obj.sid][x].send(JSON.stringify({code: "killed"}));
+              send(clients[pg][obj.sid][x], {code: "killed"});
             });
             delete clients[pg][obj.sid];
           };
@@ -100,8 +91,7 @@ module.exports = function(wss) {
               if (k != obj.sid)
               {
                 Object.keys(clients[pg][k]).forEach(x => {
-                  clients[pg][k][x].send(JSON.stringify(Object.assign(
-                    {code:code, from:obj.sid}, o)));
+                  send(clients[pg][k][x], Object.assign({code:code, from:obj.sid}, o));
                 });
               }
             });
@@ -125,7 +115,7 @@ module.exports = function(wss) {
             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
@@ -146,7 +136,7 @@ module.exports = function(wss) {
               });
             }
           });
-          socket.send(JSON.stringify({code:"pollclientsandgamers", sockIds:sockIds}));
+          send(socket, {code:"pollclientsandgamers", sockIds:sockIds});
           break;
         }
 
@@ -158,7 +148,11 @@ module.exports = function(wss) {
         case "askgame":
         case "askfullgame":
         {
-          const tmpIds = Object.keys(clients[page][obj.target]);
+          // DEBUG:
+          //console.log(sid + " " + page + " " + obj.code + " " + obj.target + " " + obj.page);
+          //console.log(clients);
+          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);
@@ -166,8 +160,7 @@ module.exports = function(wss) {
               tmpIds.splice(idx_myTmpid, 1);
           }
           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]}));
+          send(clients[pg][obj.target][tmpIds[tmpId_idx]], {code:obj.code, from:[sid,tmpId,page]});
           break;
         }
 
@@ -176,10 +169,7 @@ module.exports = function(wss) {
         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;
 
@@ -203,9 +193,11 @@ module.exports = function(wss) {
         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
+          send(clients[pg][obj.target[0]][obj.target[1]], {code:obj.code, data:obj.data});
           break;
+        }
       }
     };
     const closeListener = () => {