1 files changed, 29 insertions, 0 deletions
diff --git a/tools/deno_tcp_proxy.ts b/tools/deno_tcp_proxy.ts
new file mode 100644
index 000000000..96877fa20
--- /dev/null
+++ b/tools/deno_tcp_proxy.ts
@@ -0,0 +1,29 @@
+// Used for benchmarking Deno's tcp proxy perfromance. See tools/http_benchmark.py
+const addr = Deno.args[1] || "127.0.0.1:4500";
+const originAddr = Deno.args[2] || "127.0.0.1:4501";
+
+const listener = Deno.listen("tcp", addr);
+
+async function handle(conn: Deno.Conn): Promise<void> {
+  const origin = await Deno.dial("tcp", originAddr);
+  try {
+    await Promise.all([Deno.copy(conn, origin), Deno.copy(origin, conn)]);
+  } catch (err) {
+    if (err.message !== "read error" && err.message !== "write error") {
+      throw err;
+    }
+  } finally {
+    conn.close();
+    origin.close();
+  }
+}
+
+async function main(): Promise<void> {
+  console.log("Listening on", addr);
+  while (true) {
+    const conn = await listener.accept();
+    handle(conn);
+  }
+}
+
+main();