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worker: do not send message if port is closing #42357

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merged 1 commit into from Mar 18, 2022
Merged

worker: do not send message if port is closing #42357

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2 changes: 1 addition & 1 deletion src/node_messaging.cc
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Expand Up @@ -980,7 +980,7 @@ void MessagePort::PostMessage(const FunctionCallbackInfo<Value>& args) {
// Even if the backing MessagePort object has already been deleted, we still
// want to serialize the message to ensure spec-compliant behavior w.r.t.
// transfers.
if (port == nullptr) {
if (port == nullptr || port->IsHandleClosing()) {
Message msg;
USE(msg.Serialize(env, context, args[0], transfer_list, obj));
return;
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8 changes: 8 additions & 0 deletions test/parallel/test-worker-message-port-close.js
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Expand Up @@ -39,3 +39,11 @@ function dummy() {}
message: 'Cannot send data on closed MessagePort'
});
}

// Refs: https://github.com/nodejs/node/issues/42296
{
const ch = new MessageChannel();
ch.port1.onmessage = common.mustNotCall();
ch.port2.close();
ch.port2.postMessage('fhqwhgads');
}