From 5e0c7ace1958d34af50f72561523bbabc55bfa05 Mon Sep 17 00:00:00 2001
From: "turowskipa64071@th-nuernberg.de" <turowskipa64071@th-nuernberg.de>
Date: Thu, 7 May 2020 14:15:46 +0200
Subject: [PATCH] Renamed Files Added Connector

---
 Connect.js    | 25 +++++++++++++++++++++++++
 HtmlPage.html | 12 ++++++------
 JavaScript.js |  1 -
 Server.js     | 36 ++++++++++++++++++++++++++++++++++++
 4 files changed, 67 insertions(+), 7 deletions(-)
 create mode 100644 Connect.js
 delete mode 100644 JavaScript.js
 create mode 100644 Server.js

diff --git a/Connect.js b/Connect.js
new file mode 100644
index 0000000..1087ce5
--- /dev/null
+++ b/Connect.js
@@ -0,0 +1,25 @@
+let socket = new WebSocket("wss://javascript.info/article/websocket/demo/hello");
+
+socket.onopen = function (e) {
+    alert("[open] Connection established");
+    alert("Sending to server");
+    socket.send("My name is John");
+};
+
+socket.onmessage = function (event) {
+    alert(`[message] Data received from server: ${event.data}`);
+};
+
+socket.onclose = function (event) {
+    if (event.wasClean) {
+        alert(`[close] Connection closed cleanly, code=${event.code} reason=${event.reason}`);
+    } else {
+        // e.g. server process killed or network down
+        // event.code is usually 1006 in this case
+        alert('[close] Connection died');
+    }
+};
+
+socket.onerror = function (error) {
+    alert(`[error] ${error.message}`);
+};
\ No newline at end of file
diff --git a/HtmlPage.html b/HtmlPage.html
index 65f5bf1..239791a 100644
--- a/HtmlPage.html
+++ b/HtmlPage.html
@@ -40,13 +40,13 @@
         <input type="submit" value="Go!">
     </form>
 
-
+    <th>Bezeichnung</th>
+    <th>Kaufort</th>
+    <th>Anz</th>
+    <th>E-Preis</th>
+    <th>G-Preis</th>
     <table class="table">
-        <th>Bezeichnung</th>
-        <th>Kaufort</th>
-        <th>Anz</th>
-        <th>E-Preis</th>
-        <th>G-Preis</th>
+
         <script type="text/javascript">
             //var mydata = JSON.parse(stadtbezirk);
             var sumpreis = 0;
diff --git a/JavaScript.js b/JavaScript.js
deleted file mode 100644
index 5f28270..0000000
--- a/JavaScript.js
+++ /dev/null
@@ -1 +0,0 @@
-
\ No newline at end of file
diff --git a/Server.js b/Server.js
new file mode 100644
index 0000000..7ca541d
--- /dev/null
+++ b/Server.js
@@ -0,0 +1,36 @@
+
+const http = require('http');
+const ws = require('ws');
+
+const wss = new ws.Server({ noServer: true });
+
+function accept(req, res) {
+    // all incoming requests must be websockets
+    if (!req.headers.upgrade || req.headers.upgrade.toLowerCase() != 'websocket') {
+        res.end();
+        return;
+    }
+
+    // can be Connection: keep-alive, Upgrade
+    if (!req.headers.connection.match(/\bupgrade\b/i)) {
+        res.end();
+        return;
+    }
+
+    wss.handleUpgrade(req, req.socket, Buffer.alloc(0), onConnect);
+}
+
+function onConnect(ws) {
+    ws.on('message', function (message) {
+        let name = message.match(/([\p{Alpha}\p{M}\p{Nd}\p{Pc}\p{Join_C}]+)$/gu) || "Guest";
+        ws.send(`Hello from server, ${name}!`);
+
+        setTimeout(() => ws.close(1000, "Bye!"), 50000);
+    });
+}
+
+if (!module.parent) {
+    http.createServer(accept).listen(8080);
+} else {
+    exports.accept = accept;
+}
\ No newline at end of file