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fix(ext/http): fix crash in dropped Deno.serve requests (#21252)
Fixes #21250 We were attempting to recycle dropped resource responses too early.
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@ -2727,73 +2727,81 @@ Deno.test(
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},
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);
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for (const url of ["text", "file", "stream"]) {
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// Ensure that we don't panic when the incoming TCP request was dropped
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// https://github.com/denoland/deno/issues/20315 and that we correctly
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// close/cancel the response
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Deno.test({
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permissions: { read: true, write: true, net: true },
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name: `httpServerTcpCancellation_${url}`,
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fn: async function () {
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const ac = new AbortController();
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const streamCancelled = url == "stream" ? deferred() : undefined;
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const listeningPromise = deferred();
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const waitForAbort = deferred();
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const waitForRequest = deferred();
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const server = Deno.serve({
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port: servePort,
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signal: ac.signal,
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onListen: onListen(listeningPromise),
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handler: async (req: Request) => {
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let respBody = null;
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if (req.url.includes("/text")) {
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respBody = "text";
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} else if (req.url.includes("/file")) {
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respBody = (await makeTempFile(1024)).readable;
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} else if (req.url.includes("/stream")) {
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respBody = new ReadableStream({
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start(controller) {
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controller.enqueue(new Uint8Array([1]));
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},
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cancel(reason) {
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streamCancelled!.resolve(reason);
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},
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});
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} else {
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fail();
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}
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waitForRequest.resolve();
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await waitForAbort;
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// Allocate the request body
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req.body;
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return new Response(respBody);
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},
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});
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for (const delay of ["delay", "nodelay"]) {
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for (const url of ["text", "file", "stream"]) {
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// Ensure that we don't panic when the incoming TCP request was dropped
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// https://github.com/denoland/deno/issues/20315 and that we correctly
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// close/cancel the response
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Deno.test({
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permissions: { read: true, write: true, net: true },
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name: `httpServerTcpCancellation_${url}_${delay}`,
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fn: async function () {
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const ac = new AbortController();
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const streamCancelled = url == "stream" ? deferred() : undefined;
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const listeningPromise = deferred();
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const waitForAbort = deferred();
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const waitForRequest = deferred();
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const server = Deno.serve({
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port: servePort,
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signal: ac.signal,
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onListen: onListen(listeningPromise),
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handler: async (req: Request) => {
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let respBody = null;
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if (req.url.includes("/text")) {
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respBody = "text";
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} else if (req.url.includes("/file")) {
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respBody = (await makeTempFile(1024)).readable;
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} else if (req.url.includes("/stream")) {
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respBody = new ReadableStream({
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start(controller) {
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controller.enqueue(new Uint8Array([1]));
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},
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cancel(reason) {
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streamCancelled!.resolve(reason);
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},
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});
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} else {
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fail();
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}
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waitForRequest.resolve();
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await waitForAbort;
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await listeningPromise;
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if (delay == "delay") {
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await new Promise((r) => setTimeout(r, 1000));
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}
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// Allocate the request body
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req.body;
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return new Response(respBody);
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},
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});
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// Create a POST request and drop it once the server has received it
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const conn = await Deno.connect({ port: servePort });
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const writer = conn.writable.getWriter();
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await writer.write(new TextEncoder().encode(`POST /${url} HTTP/1.0\n\n`));
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await waitForRequest;
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await writer.close();
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await listeningPromise;
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waitForAbort.resolve();
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// Create a POST request and drop it once the server has received it
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const conn = await Deno.connect({ port: servePort });
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const writer = conn.writable.getWriter();
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await writer.write(
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new TextEncoder().encode(`POST /${url} HTTP/1.0\n\n`),
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);
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await waitForRequest;
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await writer.close();
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// Wait for cancellation before we shut the server down
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if (streamCancelled !== undefined) {
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await streamCancelled;
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}
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waitForAbort.resolve();
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// Since the handler has a chance of creating resources or running async
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// ops, we need to use a graceful shutdown here to ensure they have fully
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// drained.
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await server.shutdown();
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// Wait for cancellation before we shut the server down
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if (streamCancelled !== undefined) {
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await streamCancelled;
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}
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await server.finished;
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},
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});
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// Since the handler has a chance of creating resources or running async
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// ops, we need to use a graceful shutdown here to ensure they have fully
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// drained.
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await server.shutdown();
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await server.finished;
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},
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});
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}
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}
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Deno.test(
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@ -716,6 +716,8 @@ pub async fn op_http_set_response_body_resource(
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}
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};
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*http.needs_close_after_finish() = true;
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set_response(
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http.clone(),
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resource.size_hint().1.map(|s| s as usize),
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@ -726,7 +728,6 @@ pub async fn op_http_set_response_body_resource(
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},
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);
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*http.needs_close_after_finish() = true;
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http.response_body_finished().await;
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Ok(())
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}
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