fix(ext/node): implement dgram setBroadcast (#29195)

ext/net/01_net.js

@@ -27,6 +27,7 @@ import {
   op_net_recv_unixpacket,
   op_net_send_udp,
   op_net_send_unixpacket,
+  op_net_set_broadcast_udp,
   op_net_set_multi_loopback_udp,
   op_net_set_multi_ttl_udp,
   op_set_keepalive,
@@ -377,6 +378,12 @@ class Listener {
   }
 }
 
+const _setBroadcast = Symbol("setBroadcast");
+
+function setDatagramBroadcast(conn, broadcast) {
+  return conn[_setBroadcast](broadcast);
+}
+
 class DatagramConn {
   #rid = 0;
   #addr = null;
@@ -393,6 +400,10 @@ class DatagramConn {
     return this.#addr;
   }
 
+  [_setBroadcast](broadcast) {
+    op_net_set_broadcast_udp(this.#rid, broadcast);
+  }
+
   async joinMulticastV4(addr, multiInterface) {
     await op_net_join_multi_v4_udp(
       this.#rid,
@@ -688,6 +699,7 @@ export {
   Listener,
   listenOptionApiName,
   resolveDns,
+  setDatagramBroadcast,
   TcpConn,
   UnixConn,
   UpgradedConn,

ext/net/lib.rs

@@ -156,6 +156,7 @@ deno_core::extension!(deno_net,
     ops::op_net_leave_multi_v6_udp,
     ops::op_net_set_multi_loopback_udp,
     ops::op_net_set_multi_ttl_udp,
+    ops::op_net_set_broadcast_udp,
     ops::op_dns_resolve<P>,
     ops::op_set_nodelay,
     ops::op_set_keepalive,

ext/net/ops.rs

@@ -390,6 +390,23 @@ pub async fn op_net_set_multi_ttl_udp(
   Ok(())
 }
 
+#[op2(async)]
+pub async fn op_net_set_broadcast_udp(
+  state: Rc<RefCell<OpState>>,
+  #[smi] rid: ResourceId,
+  broadcast: bool,
+) -> Result<(), NetError> {
+  let resource = state
+    .borrow_mut()
+    .resource_table
+    .get::<UdpSocketResource>(rid)
+    .map_err(|_| NetError::SocketClosed)?;
+  let socket = RcRef::map(&resource, |r| &r.socket).borrow().await;
+  socket.set_broadcast(broadcast)?;
+
+  Ok(())
+}
+
 /// If this token is present in op_net_connect_tcp call and
 /// the hostname matches with one of the resolved IPs, then
 /// the permission check is performed against the original hostname.

ext/node/polyfills/internal_binding/udp_wrap.ts

@@ -300,8 +300,13 @@ export class UDP extends HandleWrap {
     return this.#doSend(req, bufs, count, args, AF_INET6);
   }
 
-  setBroadcast(_bool: 0 | 1): number {
+  setBroadcast(bool: 0 | 1): number {
-    notImplemented("udp.UDP.prototype.setBroadcast");
+    if (!this.#listener) {
+      return codeMap.get("EBADF")!;
+    }
+
+    net.setDatagramBroadcast(this.#listener, bool === 1);
+    return 0;
   }
 
   setMulticastInterface(_interfaceAddress: string): number {

tests/node_compat/config.jsonc

@@ -448,6 +448,7 @@
       "test-dgram-send-invalid-msg-type.js",
       "test-dgram-send-multi-buffer-copy.js",
       "test-dgram-send-multi-string-array.js",
+      "test-dgram-setBroadcast.js",
       "test-dgram-udp4.js",
       "test-dgram-udp6-send-default-host.js",
       "test-dgram-unref.js",

tests/node_compat/runner/TODO.md

@@ -1,7 +1,7 @@
 <!-- deno-fmt-ignore-file -->
 # Remaining Node Tests
 
-1163 tests out of 3993 have been ported from Node 23.9.0 (29.13% ported, 71.40% remaining).
+1164 tests out of 3993 have been ported from Node 23.9.0 (29.15% ported, 71.37% remaining).
 
 NOTE: This file should not be manually edited. Please edit `tests/node_compat/config.json` and run `deno task setup` in `tests/node_compat/runner` dir instead.
 
@@ -626,7 +626,6 @@ NOTE: This file should not be manually edited. Please edit `tests/node_compat/co
 - [parallel/test-dgram-send-empty-packet.js](https://github.com/nodejs/node/tree/v23.9.0/test/parallel/test-dgram-send-empty-packet.js)
 - [parallel/test-dgram-send-queue-info.js](https://github.com/nodejs/node/tree/v23.9.0/test/parallel/test-dgram-send-queue-info.js)
 - [parallel/test-dgram-sendto.js](https://github.com/nodejs/node/tree/v23.9.0/test/parallel/test-dgram-sendto.js)
-- [parallel/test-dgram-setBroadcast.js](https://github.com/nodejs/node/tree/v23.9.0/test/parallel/test-dgram-setBroadcast.js)
 - [parallel/test-dgram-setTTL.js](https://github.com/nodejs/node/tree/v23.9.0/test/parallel/test-dgram-setTTL.js)
 - [parallel/test-dgram-udp6-link-local-address.js](https://github.com/nodejs/node/tree/v23.9.0/test/parallel/test-dgram-udp6-link-local-address.js)
 - [parallel/test-dgram-unref-in-cluster.js](https://github.com/nodejs/node/tree/v23.9.0/test/parallel/test-dgram-unref-in-cluster.js)

tests/node_compat/test/parallel/test-dgram-setBroadcast.js

@@ -0,0 +1,32 @@
+// deno-fmt-ignore-file
+// deno-lint-ignore-file
+
+// Copyright Joyent and Node contributors. All rights reserved. MIT license.
+// Taken from Node 23.9.0
+// This file is automatically generated by `tests/node_compat/runner/setup.ts`. Do not modify this file manually.
+
+'use strict';
+
+const common = require('../common');
+const assert = require('assert');
+const dgram = require('dgram');
+
+{
+  // Should throw EBADF if the socket is never bound.
+  const socket = dgram.createSocket('udp4');
+
+  assert.throws(() => {
+    socket.setBroadcast(true);
+  }, /^Error: setBroadcast EBADF$/);
+}
+
+{
+  // Can call setBroadcast() after binding the socket.
+  const socket = dgram.createSocket('udp4');
+
+  socket.bind(0, common.mustCall(() => {
+    socket.setBroadcast(true);
+    socket.setBroadcast(false);
+    socket.close();
+  }));
+}