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fix: fix the linux patch #2703

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merged 1 commit into from
Feb 6, 2024
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fix: fix the linux patch #2703

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22 changes: 8 additions & 14 deletions lib/fetch/index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -1099,16 +1099,12 @@ function fetchFinale (fetchParams, response) {

const byteStream = new ReadableStream({
readableStream: transformStream.readable,
async start () {
this._bodyReader = this.readableStream.getReader()
},
async pull (controller) {
// TODO(mcollina): removen this block, not sure why pull() is called twice
if (this.readableStream.locked) {
return
}

const reader = this.readableStream.getReader()

while (controller.desiredSize >= 0) {
const { done, value } = await reader.read()
const { done, value } = await this._bodyReader.read()

if (done) {
queueMicrotask(() => readableStreamClose(controller))
Expand Down Expand Up @@ -1910,8 +1906,8 @@ async function httpNetworkFetch (

// 11. Let pullAlgorithm be an action that resumes the ongoing fetch
// if it is suspended.
const pullAlgorithm = () => {
fetchParams.controller.resume()
const pullAlgorithm = async () => {
await fetchParams.controller.resume()
Comment on lines +1909 to +1910
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Contributor Author

@Uzlopak Uzlopak Feb 6, 2024 •
edited
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While debugging I realized that we call pullAlgorithm with an await but as pullAlgorithm is not an async function it basically "decouples" the promise logic and the await is pointless.

undici/lib/fetch/index.js

Line 1941 in cf4d90d

await pullAlgorithm(controller)

So with this change the await pullAlgorithm will actually have something to await.

}

// 12. Let cancelAlgorithm be an algorithm that aborts fetchParams’s
Expand Down Expand Up @@ -2026,9 +2022,7 @@ async function httpNetworkFetch (
// into stream.
const buffer = new Uint8Array(bytes)
if (buffer.byteLength) {
try {
fetchParams.controller.controller.enqueue(buffer)
} catch {}
fetchParams.controller.controller.enqueue(buffer)
}

// 8. If stream is errored, then terminate the ongoing fetch.
Expand All @@ -2039,7 +2033,7 @@ async function httpNetworkFetch (

// 9. If stream doesn’t need more data ask the user agent to suspend
// the ongoing fetch.
if (!fetchParams.controller.controller.desiredSize) {
if (fetchParams.controller.controller.desiredSize <= 0) {
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According to MDN desiredSize can go negative if the stream is oversaturized. !(-1) is false. And if desiredSize is 0, then we know we can not push data, anyway. 0 would actually mean, that the stream is closed. So is my change correct?

return
}
}
Expand Down
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