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Remove old implementation of XHR's fetch.

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This commit is contained in:
Josh Matthews 2015-03-05 09:29:04 -05:00
parent 01e66035ff
commit f7ac1f1876
1 changed files with 0 additions and 136 deletions
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136
components/script/dom/xmlhttprequest.rs
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@ -43,7 +43,6 @@ use js::jsapi::JS_ClearPendingException;
use js::jsval::{JSVal, NullValue, UndefinedValue};
use net_traits::ControlMsg::Load;
use net_traits::ProgressMsg::{Payload, Done};
use net_traits::{ResourceTask, ResourceCORSData, LoadData, LoadConsumer, AsyncResponseTarget};
use net_traits::{AsyncResponseListener, ResponseAction, Metadata};
use cors::{allow_cross_origin_request, CORSRequest, RequestMode, AsyncCORSResponseListener};
@ -54,7 +53,6 @@ use util::task::spawn_named;
use std::ascii::AsciiExt;
use std::borrow::ToOwned;
use std::cell::{RefCell, Cell};
use std::sync::mpsc::{Sender, Receiver, channel};
use std::default::Default;
use std::old_io::Timer;
use std::str::FromStr;
@ -114,11 +112,6 @@ impl XHRProgress {
}
}
enum TerminateReason {
AbortedOrReopened,
TimedOut,
}
#[dom_struct]
pub struct XMLHttpRequest {
eventtarget: XMLHttpRequestEventTarget,
@ -147,7 +140,6 @@ pub struct XMLHttpRequest {
global: GlobalField,
timer: DOMRefCell<Timer>,
fetch_time: Cell<i64>,
terminate_sender: DOMRefCell<Option<Sender<TerminateReason>>>,
timeout_target: DOMRefCell<Option<Box<ScriptChan+Send>>>,
generation_id: Cell<GenerationId>,
response_status: Cell<Result<(), ()>>,
@ -182,7 +174,6 @@ impl XMLHttpRequest {
global: GlobalField::from_rooted(&global),
timer: DOMRefCell::new(Timer::new().unwrap()),
fetch_time: Cell::new(0),
terminate_sender: DOMRefCell::new(None),
timeout_target: DOMRefCell::new(None),
generation_id: Cell::new(GenerationId(0)),
response_status: Cell::new(Ok(())),
@ -341,128 +332,6 @@ impl XMLHttpRequest {
};
resource_task.send(Load(load_data, LoadConsumer::Listener(listener))).unwrap();
}
#[allow(unsafe_code)]
fn fetch(xhr: JSRef<XMLHttpRequest>, resource_task: ResourceTask,
mut load_data: LoadData, terminate_receiver: Receiver<TerminateReason>,
cors_request: Result<Option<CORSRequest>,()>, gen_id: GenerationId)
-> ErrorResult {
macro_rules! notify_error_and_return(
($err:expr) => ({
xhr.process_partial_response(XHRProgress::Errored(gen_id, $err));
return Err($err)
});
);
macro_rules! terminate(
($reason:expr) => (
match $reason {
TerminateReason::AbortedOrReopened => {
return Err(Abort)
}
TerminateReason::TimedOut => {
notify_error_and_return!(Timeout);
}
}
);
);
match cors_request {
Err(_) => {
// Happens in case of cross-origin non-http URIs
notify_error_and_return!(Network);
}
Ok(Some(ref req)) => {
let (chan, cors_port) = channel();
let req2 = req.clone();
// TODO: this exists only to make preflight check non-blocking
// perhaps should be handled by the resource_loader?
spawn_named("XHR:Cors".to_owned(), move || {
let response = req2.http_fetch();
chan.send(response).unwrap();
});
select! (
response = cors_port.recv() => {
let response = response.unwrap();
if response.network_error {
notify_error_and_return!(Network);
} else {
load_data.cors = Some(ResourceCORSData {
preflight: req.preflight_flag,
origin: req.origin.clone()
});
}
},
reason = terminate_receiver.recv() => terminate!(reason.unwrap())
);
}
_ => {}
}
// Step 10, 13
let (start_chan, start_port) = channel();
resource_task.send(Load(load_data, LoadConsumer::Channel(start_chan))).unwrap();
let progress_port;
select! (
response = start_port.recv() => {
let response = response.unwrap();
match cors_request {
Ok(Some(ref req)) => {
match response.metadata.headers {
Some(ref h) if allow_cross_origin_request(req, h) => {},
_ => notify_error_and_return!(Network)
}
},
_ => {}
};
// XXXManishearth Clear cache entries in case of a network error
xhr.process_partial_response(XHRProgress::HeadersReceived(gen_id,
response.metadata.headers.clone(), response.metadata.status.clone()));
progress_port = response.progress_port;
},
reason = terminate_receiver.recv() => terminate!(reason.unwrap())
);
let mut buf = vec!();
loop {
// Under most circumstances, progress_port will contain lots of Payload
// events. Since select! does not have any fairness or priority, it
// might always remove the progress_port event, even when there is
// a terminate event waiting in the terminate_receiver. If this happens,
// a timeout or abort will take too long to be processed. To avoid this,
// in each iteration, we check for a terminate event before we block.
match terminate_receiver.try_recv() {
Ok(reason) => terminate!(reason),
Err(_) => ()
};
select! (
progress = progress_port.recv() => match progress.unwrap() {
Payload(data) => {
buf.push_all(data.as_slice());
xhr.process_partial_response(XHRProgress::Loading(
gen_id, ByteString::new(buf.clone())));
},
Done(Ok(())) => {
xhr.process_partial_response(XHRProgress::Done(gen_id));
return Ok(());
},
Done(Err(_)) => {
notify_error_and_return!(Network);
}
},
reason = terminate_receiver.recv() => terminate!(reason.unwrap())
);
}
}
}
impl<'a> XMLHttpRequestMethods for JSRef<'a, XMLHttpRequest> {
@ -732,8 +601,6 @@ impl<'a> XMLHttpRequestMethods for JSRef<'a, XMLHttpRequest> {
}
load_data.method = (*self.request_method.borrow()).clone();
let (terminate_sender, terminate_receiver) = channel();
*self.terminate_sender.borrow_mut() = Some(terminate_sender);
// CORS stuff
let global = self.global.root();
@ -1112,7 +979,6 @@ impl<'a> PrivateXMLHttpRequestHelpers for JSRef<'a, XMLHttpRequest> {
fn terminate_ongoing_fetch(self) {
let GenerationId(prev_id) = self.generation_id.get();
self.generation_id.set(GenerationId(prev_id + 1));
self.terminate_sender.borrow().as_ref().map(|s| s.send(TerminateReason::AbortedOrReopened));
*self.timeout_target.borrow_mut() = None;
self.response_status.set(Ok(()));
}
@ -1171,7 +1037,6 @@ impl<'a> PrivateXMLHttpRequestHelpers for JSRef<'a, XMLHttpRequest> {
// This will cancel all previous timeouts
let oneshot = self.timer.borrow_mut()
.oneshot(Duration::milliseconds(timeout as i64));
let terminate_sender = (*self.terminate_sender.borrow()).clone();
let timeout_target = (*self.timeout_target.borrow().as_ref().unwrap()).clone();
let global = self.global.root();
let xhr = Trusted::new(global.r().get_cx(), self, global.r().script_chan());
@ -1183,7 +1048,6 @@ impl<'a> PrivateXMLHttpRequestHelpers for JSRef<'a, XMLHttpRequest> {
xhr: xhr,
gen_id: gen_id,
})).unwrap();
terminate_sender.map(|s| s.send(TerminateReason::TimedOut));
},
Err(_) => {
// This occurs if xhr.timeout (the sender) goes out of scope (i.e, xhr went out of scope)