From 8fa7260a5bbf332312fa3ba77e2a60d8b60054ac Mon Sep 17 00:00:00 2001
From: Vitaly Takmazov
Date: Sun, 7 Oct 2018 23:58:00 +0300
Subject: Server Side Events: server and webapp

---
 juick-server/src/main/assets/scripts.js | 71 +++++++--------------------------
 1 file changed, 15 insertions(+), 56 deletions(-)

(limited to 'juick-server/src/main/assets')

diff --git a/juick-server/src/main/assets/scripts.js b/juick-server/src/main/assets/scripts.js
index 1f2efd33..995a396a 100644
--- a/juick-server/src/main/assets/scripts.js
+++ b/juick-server/src/main/assets/scripts.js
@@ -122,27 +122,17 @@ function i18n(key, lang = undefined) {
         || key;
 }
 
-var ws,
-    pageTitle;
+var es, pageTitle;
 
-function initWS() {
-    let url = new URL('/ws/', window.location.href);
-    url.protocol = url.protocol.replace('http', 'ws');
+function initES() {
+    let url = new URL('/api/events', window.location.href);
     let hash = document.getElementById('body').getAttribute('data-hash');
     if (hash) {
         url += '?hash=' + hash;
-    } else {
-        let content = document.getElementById('content');
-        if (content) {
-            let pageMID = content.getAttribute('data-mid');
-            if (pageMID) {
-                url += pageMID;
-            }
-        }
     }
 
-    ws = new WebSocket(url);
-    ws.onopen = function() {
+    es = new EventSource(url);
+    es.onopen = function() {
         console.log('online');
         if (!document.querySelector('#wsthread')) {
             var d = document.createElement('div');
@@ -152,47 +142,18 @@ function initWS() {
             pageTitle = document.title;
         }
     };
-    ws.onclose = function() {
-        console.log('offline');
-        ws = false;
-        setTimeout(function() {
-            initWS();
-        }, 2000);
-    };
-    ws.onmessage = function(msg) {
-        if (msg.data == ' ') {
-            ws.send(' ');
-        } else {
-            try {
-                var jsonMsg = JSON.parse(msg.data);
-                console.log('data: ' + msg.data);
-                if (jsonMsg.service) {
-                    return;
-                }
-                wsIncomingReply(jsonMsg);
-            } catch (err) {
-                console.log(err);
+    es.onmessage = function(msg) {
+        try {
+            var jsonMsg = JSON.parse(msg.data);
+            console.log('data: ' + msg.data);
+            if (jsonMsg.service) {
+                return;
             }
+            wsIncomingReply(jsonMsg);
+        } catch (err) {
+            console.log(err);
         }
     };
-    var keepAlive = setInterval(wsSendKeepAlive, 90000);
-    window.addEventListener('beforeunload', () => {
-        clearInterval(keepAlive);
-        ws.close();
-    });
-}
-
-function wsSendKeepAlive() {
-    if (ws) {
-        ws.send(' ');
-    }
-}
-
-function wsShutdown() {
-    if (ws) {
-        ws.onclose = function() { };
-        ws.close();
-    }
 }
 
 function wsIncomingReply(msg) {
@@ -896,9 +857,7 @@ ready(function() {
             });
         }
     });
-    initWS();
-
-    window.addEventListener('pagehide', wsShutdown);
+    initES();
 
     killy.embedAll();
     var elSelector = 'header',
-- 
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