Specify a buffer size and the image to use

src/server.ts

@@ -18,15 +18,20 @@ const server = http.createServer((req, res) => {
   switch (req.url) {
     case '/run':
       const jobId = generateId();
-      const Code = "echo a";
-      const Image = "ghcr.io/moshell-lang/moshell:master";
-      const sizeStingIMage = Image.length;
+      const code = "echo a";
+      const image = "ghcr.io/moshell-lang/moshell:master";
+      const buffer = Buffer.allocUnsafe(jobId.length + image.length + code.length + 8);
+      buffer.write(jobId, 0);
+      buffer.writeUInt32BE(image.length, jobId.length);
+      buffer.writeUInt32BE(code.length, jobId.length + 4);
+      buffer.write(image, jobId.length + 8);
+      buffer.write(code, jobId.length + 8 + image.length);
       res.writeHead(200, {
         'Content-Type': 'text/event-stream',
         Connection: 'keep-alive',
         'Cache-Control': 'no-cache',
       });
-      sender.send(`${jobId}${sizeStingIMage}${Image}${Code}`).then(() => {
+      sender.send(buffer).then(() => {
         res.write('event: connected\n');
         res.write(`data: ${jobId}\n`);
         res.write('id: 0\n');