fix streaming request bodies, terminate fetch if the body stream errors

components/net/fetch/methods.rs

@@ -23,7 +23,8 @@ use net_traits::request::{
     is_cors_safelisted_method, is_cors_safelisted_request_header, Origin, ResponseTainting, Window,
 };
 use net_traits::request::{
-    BodyChunkRequest, CredentialsMode, Destination, Referrer, Request, RequestMode,
+    BodyChunkRequest, BodyChunkResponse, CredentialsMode, Destination, Referrer, Request,
+    RequestMode,
 };
 use net_traits::response::{Response, ResponseBody, ResponseType};
 use net_traits::{FetchTaskTarget, NetworkError, ReferrerPolicy, ResourceFetchTiming};
@@ -641,7 +642,10 @@ fn scheme_fetch(
                 let (body_chan, body_port) = ipc::channel().unwrap();
                 let _ = stream.send(BodyChunkRequest::Connect(body_chan));
                 let _ = stream.send(BodyChunkRequest::Chunk);
-                body_port.recv().ok()
+                match body_port.recv().ok() {
+                    Some(BodyChunkResponse::Chunk(bytes)) => Some(bytes),
+                    _ => panic!("cert should be sent in a single chunk."),
+                }
             });
             let data = data.as_ref().and_then(|b| {
                 let idx = b.iter().position(|b| *b == b'&')?;

components/net/http_loader.rs

@@ -11,7 +11,7 @@ use crate::fetch::methods::{main_fetch, Data, DoneChannel, FetchContext, Target}
 use crate::hsts::HstsList;
 use crate::http_cache::{CacheKey, HttpCache};
 use crate::resource_thread::AuthCache;
-use crossbeam_channel::{unbounded, Sender};
+use crossbeam_channel::{unbounded, Receiver, Sender};
 use devtools_traits::{
     ChromeToDevtoolsControlMsg, DevtoolsControlMsg, HttpRequest as DevtoolsHttpRequest,
 };
@@ -30,6 +30,7 @@ use http::header::{
     CONTENT_TYPE,
 };
 use http::{HeaderMap, Request as HyperRequest};
+use hyper::header::TRANSFER_ENCODING;
 use hyper::{Body, Client, Method, Response as HyperResponse, StatusCode};
 use hyper_serde::Serde;
 use ipc_channel::ipc::{self, IpcSender};
@@ -40,7 +41,8 @@ use net_traits::quality::{quality_to_value, Quality, QualityItem};
 use net_traits::request::Origin::Origin as SpecificOrigin;
 use net_traits::request::{is_cors_safelisted_method, is_cors_safelisted_request_header};
 use net_traits::request::{
-    BodyChunkRequest, RedirectMode, Referrer, Request, RequestBuilder, RequestMode,
+    BodyChunkRequest, BodyChunkResponse, RedirectMode, Referrer, Request, RequestBuilder,
+    RequestMode,
 };
 use net_traits::request::{CacheMode, CredentialsMode, Destination, Origin};
 use net_traits::request::{ResponseTainting, ServiceWorkersMode};
@@ -61,7 +63,7 @@ use std::time::{Duration, SystemTime};
 use time::{self, Tm};
 use tokio::prelude::{future, Future, Sink, Stream};
 use tokio::runtime::Runtime;
-use tokio::sync::mpsc::channel;
+use tokio::sync::mpsc::{channel, Receiver as TokioReceiver, Sender as TokioSender};
 
 lazy_static! {
     pub static ref HANDLE: Mutex<Option<Runtime>> = Mutex::new(Some(Runtime::new().unwrap()));
@@ -405,16 +407,89 @@ fn auth_from_cache(
     }
 }
 
+/// Messages from the IPC route to the fetch worker,
+/// used to fill the body with bytes coming-in over IPC.
+enum BodyChunk {
+    /// A chunk of bytes.
+    Chunk(Vec<u8>),
+    /// Body is done.
+    Done,
+}
+
+/// The stream side of the body passed to hyper.
+enum BodyStream {
+    /// A receiver that can be used in Body::wrap_stream,
+    /// for streaming the request over the network.
+    Chunked(TokioReceiver<Vec<u8>>),
+    /// A body whose bytes are buffered
+    /// and sent in one chunk over the network.
+    Buffered(Receiver<BodyChunk>),
+}
+
+/// The sink side of the body passed to hyper,
+/// used to enqueue chunks.
+enum BodySink {
+    /// A Tokio sender used to feed chunks to the network stream.
+    Chunked(TokioSender<Vec<u8>>),
+    /// A Crossbeam sender used to send chunks to the fetch worker,
+    /// where they will be buffered
+    /// in order to ensure they are not streamed them over the network.
+    Buffered(Sender<BodyChunk>),
+}
+
+impl BodySink {
+    pub fn transmit_bytes(&self, bytes: Vec<u8>) {
+        match self {
+            BodySink::Chunked(ref sender) => {
+                let sender = sender.clone();
+                HANDLE
+                    .lock()
+                    .unwrap()
+                    .as_mut()
+                    .unwrap()
+                    .spawn(sender.send(bytes).map(|_| ()).map_err(|_| ()));
+            },
+            BodySink::Buffered(ref sender) => {
+                let _ = sender.send(BodyChunk::Chunk(bytes));
+            },
+        }
+    }
+
+    pub fn close(&self) {
+        match self {
+            BodySink::Chunked(ref sender) => {
+                let mut sender = sender.clone();
+                HANDLE
+                    .lock()
+                    .unwrap()
+                    .as_mut()
+                    .unwrap()
+                    .spawn(future::lazy(move || {
+                        if sender.close().is_err() {
+                            warn!("Failed to close network request sink.");
+                        }
+                        Ok(())
+                    }));
+            },
+            BodySink::Buffered(ref sender) => {
+                let _ = sender.send(BodyChunk::Done);
+            },
+        }
+    }
+}
+
 fn obtain_response(
     client: &Client<Connector, Body>,
     url: &ServoUrl,
     method: &Method,
-    request_headers: &HeaderMap,
+    request_headers: &mut HeaderMap,
     body: Option<IpcSender<BodyChunkRequest>>,
+    source_is_null: bool,
     pipeline_id: &Option<PipelineId>,
     request_id: Option<&str>,
     is_xhr: bool,
     context: &FetchContext,
+    fetch_terminated: Sender<bool>,
 ) -> Box<
     dyn Future<
         Item = (HyperResponse<Decoder>, Option<ChromeToDevtoolsControlMsg>),
@@ -435,13 +510,26 @@ fn obtain_response(
         .replace("}", "%7D");
 
     let request = if let Some(chunk_requester) = body {
-        // TODO: If body is a stream, append `Transfer-Encoding`/`chunked`,
-        // see step 4.2 of https://fetch.spec.whatwg.org/#concept-http-network-fetch
+        let (sink, stream) = if source_is_null {
+            // Step 4.2 of https://fetch.spec.whatwg.org/#concept-http-network-fetch
+            // TODO: this should not be set for HTTP/2(currently not supported?).
+            request_headers.insert(TRANSFER_ENCODING, HeaderValue::from_static("chunked"));
+
+            let (sender, receiver) = channel(1);
+            (BodySink::Chunked(sender), BodyStream::Chunked(receiver))
+        } else {
+            // Note: Hyper seems to already buffer bytes when the request appears not stream-able,
+            // see https://github.com/hyperium/hyper/issues/2232#issuecomment-644322104
+            //
+            // However since this doesn't appear documented, and we're using an ancient version,
+            // for now we buffer manually to ensure we don't stream requests
+            // to servers that might not know how to handle them.
+            let (sender, receiver) = unbounded();
+            (BodySink::Buffered(sender), BodyStream::Buffered(receiver))
+        };
 
         let (body_chan, body_port) = ipc::channel().unwrap();
 
-        let (sender, receiver) = channel(1);
-
         let _ = chunk_requester.send(BodyChunkRequest::Connect(body_chan));
 
         // https://fetch.spec.whatwg.org/#concept-request-transmit-body
@@ -453,32 +541,58 @@ fn obtain_response(
         ROUTER.add_route(
             body_port.to_opaque(),
             Box::new(move |message| {
-                let bytes: Vec<u8> = message.to().unwrap();
-                let chunk_requester = chunk_requester.clone();
-                let sender = sender.clone();
+                let bytes: Vec<u8> = match message.to().unwrap() {
+                    BodyChunkResponse::Chunk(bytes) => bytes,
+                    BodyChunkResponse::Done => {
+                        // Step 3, abort these parallel steps.
+                        let _ = fetch_terminated.send(false);
+                        sink.close();
+                        return;
+                    },
+                    BodyChunkResponse::Error => {
+                        // Step 4 and/or 5.
+                        // TODO: differentiate between the two steps,
+                        // where step 5 requires setting an `aborted` flag on the fetch.
+                        let _ = fetch_terminated.send(true);
+                        sink.close();
+                        return;
+                    },
+                };
 
                 devtools_bytes.lock().unwrap().append(&mut bytes.clone());
 
-                HANDLE.lock().unwrap().as_mut().unwrap().spawn(
-                    // Step 5.1.2.2
-                    // Transmit a chunk over the network(and blocking until this is done).
-                    sender
-                        .send(bytes)
-                        .map(move |_| {
-                            // Step 5.1.2.3
-                            // Request the next chunk.
-                            let _ = chunk_requester.send(BodyChunkRequest::Chunk);
-                            ()
-                        })
-                        .map_err(|_| ()),
-                );
+                // Step 5.1.2.2, transmit chunk over the network,
+                // currently implemented by sending the bytes to the fetch worker.
+                sink.transmit_bytes(bytes);
+
+                // Step 5.1.2.3
+                // Request the next chunk.
+                let _ = chunk_requester.send(BodyChunkRequest::Chunk);
             }),
         );
 
+        let body = match stream {
+            BodyStream::Chunked(receiver) => Body::wrap_stream(receiver),
+            BodyStream::Buffered(receiver) => {
+                // Accumulate bytes received over IPC into a vector.
+                let mut body = vec![];
+                loop {
+                    match receiver.recv() {
+                        Ok(BodyChunk::Chunk(mut bytes)) => {
+                            body.append(&mut bytes);
+                        },
+                        Ok(BodyChunk::Done) => break,
+                        Err(_) => warn!("Failed to read all chunks from request body."),
+                    }
+                }
+                body.into()
+            },
+        };
+
         HyperRequest::builder()
             .method(method)
             .uri(encoded_url)
-            .body(Body::wrap_stream(receiver))
+            .body(body)
     } else {
         HyperRequest::builder()
             .method(method)
@@ -1566,16 +1680,26 @@ fn http_network_fetch(
     // do not. Once we support other kinds of fetches we'll need to be more fine grained here
     // since things like image fetches are classified differently by devtools
     let is_xhr = request.destination == Destination::None;
+
+    // The receiver will receive true if there has been an error streaming the request body.
+    let (fetch_terminated_sender, fetch_terminated_receiver) = unbounded();
+
     let response_future = obtain_response(
         &context.state.client,
         &url,
         &request.method,
-        &request.headers,
-        request.body.as_mut().map(|body| body.take_stream()),
+        &mut request.headers,
+        request.body.as_ref().map(|body| body.take_stream()),
+        request
+            .body
+            .as_ref()
+            .map(|body| body.source_is_null())
+            .unwrap_or(false),
         &request.pipeline_id,
         request_id.as_ref().map(Deref::deref),
         is_xhr,
         context,
+        fetch_terminated_sender,
     );
 
     let pipeline_id = request.pipeline_id;
@@ -1585,6 +1709,22 @@ fn http_network_fetch(
         Err(error) => return Response::network_error(error),
     };
 
+    // Check if there was an error while streaming the request body.
+    //
+    // It's ok to block on the receiver,
+    // since we're already blocking on the response future above,
+    // so we can be sure that the request has already been processed,
+    // and a message is in the channel(or soon will be).
+    match fetch_terminated_receiver.recv() {
+        Ok(true) => {
+            return Response::network_error(NetworkError::Internal(
+                "Request body streaming failed.".into(),
+            ));
+        },
+        Ok(false) => {},
+        Err(_) => warn!("Failed to receive confirmation request was streamed without error."),
+    }
+
     if log_enabled!(log::Level::Info) {
         info!("{:?} response for {}", res.version(), url);
         for header in res.headers().iter() {

components/net/tests/http_loader.rs

@@ -33,8 +33,8 @@ use net::http_loader::determine_request_referrer;
 use net::resource_thread::AuthCacheEntry;
 use net::test::replace_host_table;
 use net_traits::request::{
-    BodyChunkRequest, BodySource, CredentialsMode, Destination, RequestBody, RequestBuilder,
-    RequestMode,
+    BodyChunkRequest, BodyChunkResponse, BodySource, CredentialsMode, Destination, RequestBody,
+    RequestBuilder, RequestMode,
 };
 use net_traits::response::{HttpsState, ResponseBody};
 use net_traits::{CookieSource, NetworkError, ReferrerPolicy};
@@ -108,7 +108,8 @@ fn create_request_body_with_content(content: Vec<u8>) -> RequestBody {
         Box::new(move |message| {
             let request = message.to().unwrap();
             if let BodyChunkRequest::Connect(sender) = request {
-                let _ = sender.send(content.clone());
+                let _ = sender.send(BodyChunkResponse::Chunk(content.clone()));
+                let _ = sender.send(BodyChunkResponse::Done);
             }
         }),
     );

components/net_traits/request.rs

@@ -124,16 +124,33 @@ pub enum BodySource {
 }
 
 /// Messages used to implement <https://fetch.spec.whatwg.org/#concept-request-transmit-body>
+/// which are sent from script to net.
+#[derive(Debug, Deserialize, Serialize)]
+pub enum BodyChunkResponse {
+    /// A chunk of bytes.
+    Chunk(Vec<u8>),
+    /// The body is done.
+    Done,
+    /// There was an error streaming the body,
+    /// terminate fetch.
+    Error,
+}
+
+/// Messages used to implement <https://fetch.spec.whatwg.org/#concept-request-transmit-body>
+/// which are sent from net to script
+/// (with the exception of Done, which is sent from script to script).
 #[derive(Debug, Deserialize, Serialize)]
 pub enum BodyChunkRequest {
     /// Connect a fetch in `net`, with a stream of bytes from `script`.
-    Connect(IpcSender<Vec<u8>>),
+    Connect(IpcSender<BodyChunkResponse>),
     /// Re-extract a new stream from the source, following a redirect.
     Extract(IpcReceiver<BodyChunkRequest>),
     /// Ask for another chunk.
     Chunk,
-    /// Signal the stream is done.
+    /// Signal the stream is done(sent from script to script).
     Done,
+    /// Signal the stream has errored(sent from script to script).
+    Error,
 }
 
 /// The net component's view into <https://fetch.spec.whatwg.org/#bodies>
@@ -173,7 +190,7 @@ impl RequestBody {
         }
     }
 
-    pub fn take_stream(&mut self) -> IpcSender<BodyChunkRequest> {
+    pub fn take_stream(&self) -> IpcSender<BodyChunkRequest> {
         self.chan.clone()
     }
 

components/script/body.rs

@@ -40,7 +40,9 @@ use js::rust::wrappers::JS_ParseJSON;
 use js::rust::HandleValue;
 use js::typedarray::{ArrayBuffer, CreateWith};
 use mime::{self, Mime};
-use net_traits::request::{BodyChunkRequest, BodySource as NetBodySource, RequestBody};
+use net_traits::request::{
+    BodyChunkRequest, BodyChunkResponse, BodySource as NetBodySource, RequestBody,
+};
 use script_traits::serializable::BlobImpl;
 use std::ptr;
 use std::rc::Rc;
@@ -49,7 +51,7 @@ use url::form_urlencoded;
 
 /// The Dom object, or ReadableStream, that is the source of a body.
 /// <https://fetch.spec.whatwg.org/#concept-body-source>
-#[derive(Clone)]
+#[derive(Clone, PartialEq)]
 pub enum BodySource {
     /// A ReadableStream comes with a null-source.
     Null,
@@ -59,6 +61,14 @@ pub enum BodySource {
     Object,
 }
 
+/// The reason to stop reading from the body.
+enum StopReading {
+    /// The stream has errored.
+    Error,
+    /// The stream is done.
+    Done,
+}
+
 /// The IPC route handler
 /// for <https://fetch.spec.whatwg.org/#concept-request-transmit-body>.
 /// This route runs in the script process,
@@ -69,7 +79,7 @@ struct TransmitBodyConnectHandler {
     stream: Trusted<ReadableStream>,
     task_source: NetworkingTaskSource,
     canceller: TaskCanceller,
-    bytes_sender: Option<IpcSender<Vec<u8>>>,
+    bytes_sender: Option<IpcSender<BodyChunkResponse>>,
     control_sender: IpcSender<BodyChunkRequest>,
     in_memory: Option<Vec<u8>>,
     in_memory_done: bool,
@@ -123,7 +133,14 @@ impl TransmitBodyConnectHandler {
                     BodyChunkRequest::Chunk => body_handler.transmit_source(),
                     // Note: this is actually sent from this process
                     // by the TransmitBodyPromiseHandler when reading stops.
-                    BodyChunkRequest::Done => body_handler.stop_reading(),
+                    BodyChunkRequest::Done => {
+                        body_handler.stop_reading(StopReading::Done);
+                    },
+                    // Note: this is actually sent from this process
+                    // by the TransmitBodyPromiseHandler when the stream errors.
+                    BodyChunkRequest::Error => {
+                        body_handler.stop_reading(StopReading::Error);
+                    },
                 }
             }),
         );
@@ -138,7 +155,7 @@ impl TransmitBodyConnectHandler {
     fn transmit_source(&mut self) {
         if self.in_memory_done {
             // Step 5.1.3
-            self.stop_reading();
+            self.stop_reading(StopReading::Done);
             return;
         }
 
@@ -153,29 +170,58 @@ impl TransmitBodyConnectHandler {
                 .bytes_sender
                 .as_ref()
                 .expect("No bytes sender to transmit source.")
-                .send(bytes.clone());
+                .send(BodyChunkResponse::Chunk(bytes.clone()));
             return;
         }
         warn!("Re-directs for file-based Blobs not supported yet.");
     }
 
     /// Take the IPC sender sent by `net`, so we can send body chunks with it.
-    fn start_reading(&mut self, sender: IpcSender<Vec<u8>>) {
+    /// Also the entry point to <https://fetch.spec.whatwg.org/#concept-request-transmit-body>
+    fn start_reading(&mut self, sender: IpcSender<BodyChunkResponse>) {
         self.bytes_sender = Some(sender);
+
+        // If we're using an actual ReadableStream, acquire a reader for it.
+        if self.source == BodySource::Null {
+            let stream = self.stream.clone();
+            let _ = self.task_source.queue_with_canceller(
+                task!(start_reading_request_body_stream: move || {
+                    // Step 1, Let body be request’s body.
+                    let rooted_stream = stream.root();
+
+                    // TODO: Step 2, If body is null.
+
+                    // Step 3, get a reader for stream.
+                    rooted_stream.start_reading().expect("Couldn't acquire a reader for the body stream.");
+
+                    // Note: this algorithm continues when the first chunk is requested by `net`.
+                }),
+                &self.canceller,
+            );
+        }
     }
 
     /// Drop the IPC sender sent by `net`
-    fn stop_reading(&mut self) {
-        // Note: this should close the corresponding receiver,
-        // and terminate the request stream in `net`.
-        self.bytes_sender = None;
+    fn stop_reading(&mut self, reason: StopReading) {
+        let bytes_sender = self
+            .bytes_sender
+            .take()
+            .expect("Stop reading called multiple times on TransmitBodyConnectHandler.");
+        match reason {
+            StopReading::Error => {
+                let _ = bytes_sender.send(BodyChunkResponse::Error);
+            },
+            StopReading::Done => {
+                let _ = bytes_sender.send(BodyChunkResponse::Done);
+            },
+        }
     }
 
-    /// The entry point to <https://fetch.spec.whatwg.org/#concept-request-transmit-body>
+    /// Step 4 and following of <https://fetch.spec.whatwg.org/#concept-request-transmit-body>
     fn transmit_body_chunk(&mut self) {
         if self.in_memory_done {
             // Step 5.1.3
-            self.stop_reading();
+            self.stop_reading(StopReading::Done);
             return;
         }
 
@@ -188,7 +234,7 @@ impl TransmitBodyConnectHandler {
 
         // In case of the data being in-memory, send everything in one chunk, by-passing SpiderMonkey.
         if let Some(bytes) = self.in_memory.clone() {
-            let _ = bytes_sender.send(bytes);
+            let _ = bytes_sender.send(BodyChunkResponse::Chunk(bytes));
             // Mark this body as `done` so that we can stop reading in the next tick,
             // matching the behavior of the promise-based flow
             self.in_memory_done = true;
@@ -197,27 +243,9 @@ impl TransmitBodyConnectHandler {
 
         let _ = self.task_source.queue_with_canceller(
             task!(setup_native_body_promise_handler: move || {
-                // Step 1, Let body be request’s body.
-                //
-                // TODO: We need the handle the body null case,
-                // here assuming body is something and we have the corresponding stream.
                 let rooted_stream = stream.root();
                 let global = rooted_stream.global();
 
-                // TODO: Step 2, If body is null,
-                // then queue a fetch task on request to process request end-of-body
-                // for request and abort these steps.
-
-                // TODO: queuing those "process request ..." tasks means we also need a handle on Request here.
-
-                // Step 3, get a reader for stream.
-                if rooted_stream.start_reading().is_err() {
-                    // Note: this can happen if script starts consuming request body
-                    // before fetch starts transmitting it.
-                    // Not in the spec.
-                    return;
-                }
-
                 // Step 4, the result of reading a chunk from body’s stream with reader.
                 let promise = rooted_stream.read_a_chunk();
 
@@ -225,14 +253,19 @@ impl TransmitBodyConnectHandler {
                 // are a combination of the promise native handler here,
                 // and the corresponding IPC route in `component::net::http_loader`.
                 let promise_handler = Box::new(TransmitBodyPromiseHandler {
-                    bytes_sender,
+                    bytes_sender: bytes_sender.clone(),
                     stream: rooted_stream.clone(),
+                    control_sender: control_sender.clone(),
+                });
+
+                let rejection_handler = Box::new(TransmitBodyPromiseRejectionHandler {
+                    bytes_sender,
+                    stream: rooted_stream,
                     control_sender,
                 });
 
-                let rejection_handler = Box::new(TransmitBodyPromiseRejectionHandler {stream: rooted_stream});
-
-                let handler = PromiseNativeHandler::new(&global, Some(promise_handler), Some(rejection_handler));
+                let handler =
+                    PromiseNativeHandler::new(&global, Some(promise_handler), Some(rejection_handler));
 
                 let realm = enter_realm(&*global);
                 let comp = InRealm::Entered(&realm);
@@ -248,7 +281,7 @@ impl TransmitBodyConnectHandler {
 #[derive(Clone, JSTraceable, MallocSizeOf)]
 struct TransmitBodyPromiseHandler {
     #[ignore_malloc_size_of = "Channels are hard"]
-    bytes_sender: IpcSender<Vec<u8>>,
+    bytes_sender: IpcSender<BodyChunkResponse>,
     stream: DomRoot<ReadableStream>,
     #[ignore_malloc_size_of = "Channels are hard"]
     control_sender: IpcSender<BodyChunkRequest>,
@@ -278,8 +311,7 @@ impl Callback for TransmitBodyPromiseHandler {
             Ok(chunk) => chunk,
             Err(_) => {
                 // Step 5.5, the "otherwise" steps.
-                // TODO: terminate fetch.
-                let _ = self.control_sender.send(BodyChunkRequest::Done);
+                let _ = self.control_sender.send(BodyChunkRequest::Error);
                 return self.stream.stop_reading();
             },
         };
@@ -287,7 +319,7 @@ impl Callback for TransmitBodyPromiseHandler {
         // Step 5.1 and 5.2, transmit chunk.
         // Send the chunk to the body transmitter in net::http_loader::obtain_response.
         // TODO: queue a fetch task on request to process request body for request.
-        let _ = self.bytes_sender.send(chunk);
+        let _ = self.bytes_sender.send(BodyChunkResponse::Chunk(chunk));
     }
 }
 
@@ -295,14 +327,18 @@ impl Callback for TransmitBodyPromiseHandler {
 /// <https://fetch.spec.whatwg.org/#concept-request-transmit-body>.
 #[derive(Clone, JSTraceable, MallocSizeOf)]
 struct TransmitBodyPromiseRejectionHandler {
+    #[ignore_malloc_size_of = "Channels are hard"]
+    bytes_sender: IpcSender<BodyChunkResponse>,
     stream: DomRoot<ReadableStream>,
+    #[ignore_malloc_size_of = "Channels are hard"]
+    control_sender: IpcSender<BodyChunkRequest>,
 }
 
 impl Callback for TransmitBodyPromiseRejectionHandler {
     /// <https://fetch.spec.whatwg.org/#concept-request-transmit-body>
     fn callback(&self, _cx: JSContext, _v: HandleValue, _realm: InRealm) {
         // Step 5.4, the "rejection" steps.
-        // TODO: terminate fetch.
+        let _ = self.control_sender.send(BodyChunkRequest::Error);
         return self.stream.stop_reading();
     }
 }
@@ -376,7 +412,14 @@ impl ExtractedBody {
                     BodyChunkRequest::Chunk => body_handler.transmit_body_chunk(),
                     // Note: this is actually sent from this process
                     // by the TransmitBodyPromiseHandler when reading stops.
-                    BodyChunkRequest::Done => body_handler.stop_reading(),
+                    BodyChunkRequest::Done => {
+                        body_handler.stop_reading(StopReading::Done);
+                    },
+                    // Note: this is actually sent from this process
+                    // by the TransmitBodyPromiseHandler when the stream errors.
+                    BodyChunkRequest::Error => {
+                        body_handler.stop_reading(StopReading::Error);
+                    },
                 }
             }),
         );

tests/wpt/metadata/fetch/api/basic/request-upload.any.js.ini

@@ -1,41 +1,9 @@
 [request-upload.any.html]
-  type: testharness
   [Fetch with POST with ReadableStream]
     expected: FAIL
 
-  [Fetch with POST with ReadableStream containing String]
-    expected: FAIL
-
-  [Fetch with POST with ReadableStream containing null]
-    expected: FAIL
-
-  [Fetch with POST with ReadableStream containing number]
-    expected: FAIL
-
-  [Fetch with POST with ReadableStream containing ArrayBuffer]
-    expected: FAIL
-
-  [Fetch with POST with ReadableStream containing Blob]
-    expected: FAIL
-
 
 [request-upload.any.worker.html]
-  type: testharness
   [Fetch with POST with ReadableStream]
     expected: FAIL
 
-  [Fetch with POST with ReadableStream containing String]
-    expected: FAIL
-
-  [Fetch with POST with ReadableStream containing null]
-    expected: FAIL
-
-  [Fetch with POST with ReadableStream containing number]
-    expected: FAIL
-
-  [Fetch with POST with ReadableStream containing ArrayBuffer]
-    expected: FAIL
-
-  [Fetch with POST with ReadableStream containing Blob]
-    expected: FAIL
-