From bad2e95d499b9679fc26ee9d04b4c454f10ff454 Mon Sep 17 00:00:00 2001
From: Tobias Berger <tobi.berger13@gmail.com>
Date: Fri, 7 Jan 2022 17:36:19 +0100
Subject: [PATCH] Initial commit

---
 .gitignore            |  3 +++
 .vscode/settings.json |  7 +++++++
 server.deno.ts        | 44 +++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 54 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 .vscode/settings.json
 create mode 100644 server.deno.ts

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..9907591
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+// compiled binaries
+*.deno
+*.exe
\ No newline at end of file
diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000..fd58e75
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,7 @@
+{
+  "deno.enable": true,
+  "deno.lint": true,
+  "deno.codeLens.implementations": true,
+  "deno.codeLens.references": true,
+  "deno.codeLens.referencesAllFunctions": true
+}
\ No newline at end of file
diff --git a/server.deno.ts b/server.deno.ts
new file mode 100644
index 0000000..0806703
--- /dev/null
+++ b/server.deno.ts
@@ -0,0 +1,44 @@
+import {
+  WebSocketServer
+} from "https://deno.land/x/websocket@v0.1.3/mod.ts";
+
+const port = 8989;
+const timeout = 15000;
+
+const server = new WebSocketServer(port);
+
+console.log("listening on port: " + port);
+
+function ackPkg() {
+  return JSON.stringify({
+    type: "ack",
+    date: Date.now(),
+  });
+}
+
+server.on("connection", function connection(socket) {
+  function close() {
+    socket.send("closing connection due to inactivity");
+    socket.close();
+  }
+
+  socket.on("message", function (message: string) {
+    console.log("message: " + message);
+    socket.send(
+      JSON.stringify({
+        date: Date.now(),
+        author: "ECHO Service",
+        content: message,
+      })
+    );
+    clearTimeout(closeTimeout);
+    closeTimeout = setTimeout(close, timeout);
+  });
+  socket.on("close", function close() {
+    console.log("closed a connection");
+  });
+
+  console.log("new client connected!");
+  socket.send("connected");
+  let closeTimeout = setTimeout(close, timeout);
+});