Genesis

test-send.mjs

@@ -0,0 +1,42 @@
+// Sends a sample ESC/POS receipt (with a GS V cut) to the proxy listener.
+// Useful to verify logging + forwarding.
+import net from "node:net";
+
+const host = process.env.LISTEN_HOST || "127.0.0.1";
+const port = Number(process.env.LISTEN_PORT || 9100);
+
+const ESC = 0x1b;
+const GS = 0x1d;
+
+const lines = [
+  Buffer.from([ESC, 0x40]), // init
+  Buffer.from([ESC, 0x61, 0x01]), // center
+  Buffer.from("KASSENBON\n", "latin1"),
+  Buffer.from([ESC, 0x61, 0x00]), // left
+  Buffer.from("Artikel 1          3.50 EUR\n", "latin1"),
+  Buffer.from("Artikel 2          1.20 EUR\n", "latin1"),
+  Buffer.from("--------------------------------\n", "latin1"),
+  Buffer.from("Summe             4.70 EUR\n", "latin1"),
+  Buffer.from([GS, 0x56, 0x00]), // cut (bladecut) -> job delimiter
+  // second job in same connection:
+  Buffer.from([ESC, 0x40]),
+  Buffer.from("TAGESABSCHLUSS\n", "latin1"),
+  Buffer.from([GS, 0x56, 0x01]), // another cut
+];
+
+const client = net.createConnection({ host, port }, () => {
+  console.log(`[test] connected to ${host}:${port}`);
+  for (const l of lines) client.write(l);
+  console.log("[test] sent sample jobs");
+  client.end();
+});
+
+client.on("error", (err) => {
+  console.error("[test] error:", err.message);
+  process.exit(1);
+});
+
+client.on("close", () => {
+  console.log("[test] done");
+  process.exit(0);
+});