Update message and max delay

Dockerfile

@@ -2,6 +2,7 @@ FROM node:lts-alpine
 USER node
 WORKDIR /app
 ENV NODE_ENV production
+ENV TZ Europe/Warsaw
 COPY --chown=node:node index.mjs ./
 EXPOSE 3000
 CMD ["node", "./index.mjs"]

LICENSE

@@ -0,0 +1,24 @@
+This is free and unencumbered software released into the public domain.
+
+Anyone is free to copy, modify, publish, use, compile, sell, or
+distribute this software, either in source code form or as a compiled
+binary, for any purpose, commercial or non-commercial, and by any
+means.
+
+In jurisdictions that recognize copyright laws, the author or authors
+of this software dedicate any and all copyright interest in the
+software to the public domain. We make this dedication for the benefit
+of the public at large and to the detriment of our heirs and
+successors. We intend this dedication to be an overt act of
+relinquishment in perpetuity of all present and future rights to this
+software under copyright law.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+For more information, please refer to <https://unlicense.org/>

index.mjs

@@ -1,23 +1,43 @@
 import { createServer } from 'node:http';
-import { clearInterval, setInterval } from 'node:timers';
+import { setTimeout } from 'node:timers';
+
+const msg = 'Relax, take it easy! For there is nothing that we can do.';
+const minDelay = 3000;
+const maxDelay = 5000;
+const delayDiff = maxDelay - minDelay;
+const randomDelay = () => Math.floor(Math.random() * delayDiff + minDelay);
 
 const server = createServer((req, res) => {
-  console.log(
-    `Caught ${req.headers['x-forwarded-for']} on ${req.method} ${req.url}`
-  );
-
-  let msg = ':) you are an idiot hahahahaha :)';
+  const connOpenDate = new Date();
+  const dateText = connOpenDate.toLocaleString('pl');
+  const scannerIP = req.headers['x-forwarded-for'];
+  const host = req.headers['x-forwarded-host'];
+  const endpoint = `${req.method} ${req.url}`;
   let charIdx = 0;
-  let intervalId = setInterval(() => {
-    if (charIdx === msg.length) {
-      charIdx = 0;
-      res.write('\n');
-    } else {
-      res.write(msg[charIdx++]);
-    }
-  }, 3000);
 
-  res.once('close', () => clearInterval(intervalId));
+  console.log(`[${dateText}] ${scannerIP} targeted ${host} on ${endpoint}`);
+
+  const hang = () => {
+    if (res.closed) return;
+    else if (charIdx === msg.length) res.end('\n');
+    else res.write(msg[charIdx++]);
+
+    setTimeout(hang, randomDelay());
+  };
+
+  hang();
+
+  res.once('close', () => {
+    const connCloseDate = new Date();
+    const timeDiff = connCloseDate.getTime() - connOpenDate.getTime();
+    const dateText = connCloseDate.toLocaleString('pl');
+    const diffText = new Date(timeDiff).toISOString().substring(14, 19);
+
+    const hangResult =
+      charIdx === msg.length ? 'received the message' : 'aborted connection';
+
+    console.log(`[${dateText}] ${scannerIP} ${hangResult} after ${diffText}`);
+  });
 });
 
 server.listen(3000);