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(cherrypick) [Flight Reply] Reject any new Chunks not yet discovered at the time of reportGlobalError (#31840) #31849

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Original file line number Diff line number Diff line change
Expand Up @@ -250,4 +250,31 @@ describe('ReactFlightDOMReplyEdge', () => {
),
);
});

it('should abort when parsing an incomplete payload', async () => {
const infinitePromise = new Promise(() => {});
const controller = new AbortController();
const promiseForResult = ReactServerDOMClient.encodeReply(
{promise: infinitePromise},
{
signal: controller.signal,
},
);
controller.abort();
const body = await promiseForResult;

const decoded = await ReactServerDOMServer.decodeReply(
body,
webpackServerMap,
);

let error = null;
try {
await decoded.promise;
} catch (x) {
error = x;
}
expect(error).not.toBe(null);
expect(error.message).toBe('Connection closed.');
});
});
18 changes: 18 additions & 0 deletions packages/react-server/src/ReactFlightReplyServer.js
Original file line number Diff line number Diff line change
Expand Up @@ -173,6 +173,8 @@ export type Response = {
_prefix: string,
_formData: FormData,
_chunks: Map<number, SomeChunk<any>>,
_closed: boolean,
_closedReason: mixed,
_temporaryReferences: void | TemporaryReferenceSet,
};

Expand Down Expand Up @@ -261,6 +263,14 @@ function createResolvedModelChunk<T>(
return new Chunk(RESOLVED_MODEL, value, id, response);
}

function createErroredChunk<T>(
response: Response,
reason: mixed,
): ErroredChunk<T> {
// $FlowFixMe[invalid-constructor] Flow doesn't support functions as constructors
return new Chunk(ERRORED, null, reason, response);
}

function resolveModelChunk<T>(
chunk: SomeChunk<T>,
value: string,
Expand Down Expand Up @@ -501,6 +511,8 @@ function initializeModelChunk<T>(chunk: ResolvedModelChunk<T>): void {
// Report that any missing chunks in the model is now going to throw this
// error upon read. Also notify any pending promises.
export function reportGlobalError(response: Response, error: Error): void {
response._closed = true;
response._closedReason = error;
response._chunks.forEach(chunk => {
// If this chunk was already resolved or errored, it won't
// trigger an error but if it wasn't then we need to
Expand All @@ -522,6 +534,10 @@ function getChunk(response: Response, id: number): SomeChunk<any> {
if (backingEntry != null) {
// We assume that this is a string entry for now.
chunk = createResolvedModelChunk(response, (backingEntry: any), id);
} else if (response._closed) {
// We have already errored the response and we're not going to get
// anything more streaming in so this will immediately error.
chunk = createErroredChunk(response, response._closedReason);
} else {
// We're still waiting on this entry to stream in.
chunk = createPendingChunk(response);
Expand Down Expand Up @@ -1102,6 +1118,8 @@ export function createResponse(
_prefix: formFieldPrefix,
_formData: backingFormData,
_chunks: chunks,
_closed: false,
_closedReason: null,
_temporaryReferences: temporaryReferences,
};
return response;
Expand Down
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