1 files changed, 44 insertions, 1 deletions
diff --git a/components/script/fetch.rs b/components/script/fetch.rs
index c3003e658a0..d65b79291c5 100644
--- a/components/script/fetch.rs
+++ b/components/script/fetch.rs
@@ -20,7 +20,9 @@ use crate::dom::promise::Promise;
 use crate::dom::request::Request;
 use crate::dom::response::Response;
 use crate::dom::serviceworkerglobalscope::ServiceWorkerGlobalScope;
-use crate::network_listener::{self, NetworkListener, PreInvoke, ResourceTimingListener};
+use crate::network_listener::{
+    self, submit_timing_data, NetworkListener, PreInvoke, ResourceTimingListener,
+};
 use crate::task_source::TaskSourceName;
 use ipc_channel::ipc;
 use ipc_channel::router::ROUTER;
@@ -28,6 +30,7 @@ use js::jsapi::JSAutoCompartment;
 use net_traits::request::RequestBuilder;
 use net_traits::request::{Request as NetTraitsRequest, ServiceWorkersMode};
 use net_traits::CoreResourceMsg::Fetch as NetTraitsFetch;
+use net_traits::{CoreResourceMsg, CoreResourceThread, FetchResponseMsg};
 use net_traits::{FetchChannels, FetchResponseListener, NetworkError};
 use net_traits::{FetchMetadata, FilteredMetadata, Metadata};
 use net_traits::{ResourceFetchTiming, ResourceTimingType};
@@ -301,3 +304,43 @@ fn fill_headers_with_metadata(r: DomRoot<Response>, m: Metadata) {
     r.set_raw_status(m.status);
     r.set_final_url(m.final_url);
 }
+
+/// Convenience function for synchronously loading a whole resource.
+pub fn load_whole_resource(
+    request: RequestBuilder,
+    core_resource_thread: &CoreResourceThread,
+    global: &GlobalScope,
+) -> Result<(Metadata, Vec<u8>), NetworkError> {
+    let (action_sender, action_receiver) = ipc::channel().unwrap();
+    let url = request.url.clone();
+    core_resource_thread
+        .send(CoreResourceMsg::Fetch(
+            request,
+            FetchChannels::ResponseMsg(action_sender, None),
+        ))
+        .unwrap();
+
+    let mut buf = vec![];
+    let mut metadata = None;
+    loop {
+        match action_receiver.recv().unwrap() {
+            FetchResponseMsg::ProcessRequestBody | FetchResponseMsg::ProcessRequestEOF => (),
+            FetchResponseMsg::ProcessResponse(Ok(m)) => {
+                metadata = Some(match m {
+                    FetchMetadata::Unfiltered(m) => m,
+                    FetchMetadata::Filtered { unsafe_, .. } => unsafe_,
+                })
+            },
+            FetchResponseMsg::ProcessResponseChunk(data) => buf.extend_from_slice(&data),
+            FetchResponseMsg::ProcessResponseEOF(Ok(_)) => {
+                let metadata = metadata.unwrap();
+                if let Some(timing) = &metadata.timing {
+                    submit_timing_data(global, url, InitiatorType::Other, &timing);
+                }
+                return Ok((metadata, buf));
+            },
+            FetchResponseMsg::ProcessResponse(Err(e)) |
+            FetchResponseMsg::ProcessResponseEOF(Err(e)) => return Err(e),
+        }
+    }
+}