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Code Issues Packages 1 Wiki Activity

fix(ext/node): cancel pending ipc writes on channel close (#26504)

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Fixes the issue described in
https://github.com/denoland/deno/issues/23882#issuecomment-2423316362.

The parent was starting to send a message right before the process would
exit, and the channel closed in the middle of the write. Unlike with
reads, we weren't cancelling the pending writes, which resulted in a
`Broken pipe` error surfacing to the user.
This commit is contained in:
Nathan Whitaker 2024-10-23 21:50:35 -07:00 committed by GitHub
parent 7c57105cc4
commit 27df42f659
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GPG key ID: B5690EEEBB952194
2 changed files with 23 additions and 5 deletions
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9
ext/node/ops/ipc.rs
View file

@ -216,10 +216,17 @@ mod impl_ {
queue_ok.set_index(scope, 0, v);
}
Ok(async move {
stream.clone().write_msg_bytes(&serialized).await?;
let cancel = stream.cancel.clone();
let result = stream
.clone()
.write_msg_bytes(&serialized)
.or_cancel(cancel)
.await;
// adjust count even on error
stream
.queued_bytes
.fetch_sub(serialized.len(), std::sync::atomic::Ordering::Relaxed);
result??;
Ok(())
})
}

19
ext/node/polyfills/internal/child_process.ts
View file

@ -1339,7 +1339,7 @@ export function setupChannel(target: any, ipc: number) {
}
}
process.nextTick(handleMessage, msg);
nextTick(handleMessage, msg);
}
} catch (err) {
if (
@ -1400,7 +1400,7 @@ export function setupChannel(target: any, ipc: number) {
if (!target.connected) {
const err = new ERR_IPC_CHANNEL_CLOSED();
if (typeof callback === "function") {
process.nextTick(callback, err);
nextTick(callback, err);
} else {
nextTick(() => target.emit("error", err));
}
@ -1416,7 +1416,18 @@ export function setupChannel(target: any, ipc: number) {
.then(() => {
control.unrefCounted();
if (callback) {
process.nextTick(callback, null);
nextTick(callback, null);
}
}, (err: Error) => {
control.unrefCounted();
if (err instanceof Deno.errors.Interrupted) {
// Channel closed on us mid-write.
} else {
if (typeof callback === "function") {
nextTick(callback, err);
} else {
nextTick(() => target.emit("error", err));
}
}
});
return queueOk[0];
@ -1433,7 +1444,7 @@ export function setupChannel(target: any, ipc: number) {
target.connected = false;
target[kCanDisconnect] = false;
control[kControlDisconnect]();
process.nextTick(() => {
nextTick(() => {
target.channel = null;
core.close(ipc);
target.emit("disconnect");