1 files changed, 25 insertions, 0 deletions
diff --git a/tools/node_tcp_promise.js b/tools/node_tcp_promise.js
new file mode 100644
index 000000000..c8fc54aba
--- /dev/null
+++ b/tools/node_tcp_promise.js
@@ -0,0 +1,25 @@
+// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
+// Note: this is a keep-alive server.
+const { Server } = require("net");
+const port = process.argv[2] || "4544";
+console.log("port", port);
+
+const response = Buffer.from(
+  "HTTP/1.1 200 OK\r\nContent-Length: 12\r\n\r\nHello World\n"
+);
+
+async function write(socket, buffer) {
+  let p = new Promise((resolve, reject) => {
+    socket.write(buffer, resolve);
+  });
+  return p;
+}
+
+Server(async socket => {
+  socket.on("error", _ => {
+    socket.destroy();
+  });
+  for await (const data of socket) {
+    write(socket, response);
+  }
+}).listen(port);