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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,133 @@ | ||
| /* This Source Code Form is subject to the terms of the Mozilla Public | ||
| * License, v. 2.0. If a copy of the MPL was not distributed with this | ||
| * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | ||
|
|
||
| //! The listener that encapsulates all state for an in-progress document request. | ||
| //! Any redirects that are encountered are followed. Whenever a non-redirect | ||
| //! response is received, it is forwarded to the appropriate script thread. | ||
|
|
||
| use hyper::header::Location; | ||
| use ipc_channel::ipc; | ||
| use ipc_channel::router::ROUTER; | ||
| use msg::constellation_msg::PipelineId; | ||
| use net::http_loader::{set_default_accept, set_default_accept_language}; | ||
| use net_traits::{CoreResourceMsg, FetchMetadata, FetchResponseMsg}; | ||
| use net_traits::{IpcSend, NetworkError, ResourceThreads}; | ||
| use net_traits::request::{Destination, RequestInit, Type}; | ||
| use net_traits::response::ResponseInit; | ||
| use std::sync::mpsc::Sender; | ||
|
|
||
| pub struct NetworkListener { | ||
| res_init: Option<ResponseInit>, | ||
| req_init: RequestInit, | ||
| pipeline_id: PipelineId, | ||
| resource_threads: ResourceThreads, | ||
| sender: Sender<(PipelineId, FetchResponseMsg)>, | ||
| should_send: bool, | ||
| } | ||
|
|
||
| impl NetworkListener { | ||
| pub fn new(req_init: RequestInit, | ||
| pipeline_id: PipelineId, | ||
| resource_threads: ResourceThreads, | ||
| sender: Sender<(PipelineId, FetchResponseMsg)>) -> NetworkListener { | ||
| NetworkListener { | ||
| res_init: None, | ||
| req_init, | ||
| pipeline_id, | ||
| resource_threads, | ||
| sender, | ||
| should_send: false | ||
| } | ||
| } | ||
|
|
||
| pub fn initiate_fetch(&self) { | ||
| let (ipc_sender, ipc_receiver) = ipc::channel().expect("Failed to create IPC channel!"); | ||
|
|
||
| let mut listener = NetworkListener { | ||
| res_init: self.res_init.clone(), | ||
| req_init: self.req_init.clone(), | ||
| resource_threads: self.resource_threads.clone(), | ||
| sender: self.sender.clone(), | ||
| pipeline_id: self.pipeline_id.clone(), | ||
| should_send: false, | ||
| }; | ||
|
|
||
| let msg = match self.res_init { | ||
| Some(ref res_init_) => CoreResourceMsg::FetchRedirect( | ||
| self.req_init.clone(), | ||
| res_init_.clone(), | ||
| ipc_sender), | ||
| None => { | ||
| set_default_accept(Type::None, Destination::Document, &mut listener.req_init.headers); | ||
| set_default_accept_language(&mut listener.req_init.headers); | ||
|
|
||
| CoreResourceMsg::Fetch( | ||
| listener.req_init.clone(), | ||
| ipc_sender) | ||
| } | ||
| }; | ||
|
|
||
| ROUTER.add_route(ipc_receiver.to_opaque(), box move |message| { | ||
| let msg = message.to(); | ||
| match msg { | ||
| Ok(FetchResponseMsg::ProcessResponse(res)) => listener.check_redirect(res), | ||
| Ok(msg_) => listener.send(msg_), | ||
| Err(e) => warn!("Error while receiving network listener message: {}", e), | ||
| }; | ||
| }); | ||
|
|
||
| if let Err(e) = self.resource_threads.sender().send(msg) { | ||
| warn!("Resource thread unavailable ({})", e); | ||
| } | ||
| } | ||
|
|
||
| fn check_redirect(&mut self, | ||
| message: Result<(FetchMetadata), NetworkError>) { | ||
| match message { | ||
| Ok(res_metadata) => { | ||
| let metadata = match res_metadata { | ||
| FetchMetadata::Filtered { ref unsafe_, .. } => unsafe_, | ||
| FetchMetadata::Unfiltered(ref m) => m, | ||
| }; | ||
|
|
||
| match metadata.headers { | ||
| Some(ref headers) if headers.has::<Location>() => { | ||
| if self.req_init.url_list.is_empty() { | ||
| self.req_init.url_list.push(self.req_init.url.clone()); | ||
| } | ||
| self.req_init.url_list.push(metadata.final_url.clone()); | ||
|
|
||
| self.req_init.referrer_url = metadata.referrer.clone(); | ||
| self.req_init.referrer_policy = metadata.referrer_policy; | ||
|
|
||
| self.res_init = Some(ResponseInit { | ||
| url: metadata.final_url.clone(), | ||
| headers: headers.clone().into_inner(), | ||
| referrer: metadata.referrer.clone(), | ||
| }); | ||
|
|
||
| self.initiate_fetch(); | ||
| }, | ||
| _ => { | ||
| // Response should be processed by script thread. | ||
| self.should_send = true; | ||
| self.send(FetchResponseMsg::ProcessResponse(Ok(res_metadata.clone()))); | ||
| } | ||
| }; | ||
| }, | ||
| Err(e) => { | ||
| self.should_send = true; | ||
| self.send(FetchResponseMsg::ProcessResponse(Err(e))) | ||
| } | ||
| }; | ||
| } | ||
|
|
||
| fn send(&mut self, msg: FetchResponseMsg) { | ||
| if self.should_send { | ||
| if let Err(e) = self.sender.send((self.pipeline_id, msg)) { | ||
| warn!("Failed to forward network message to pipeline {}: {:?}", self.pipeline_id, e); | ||
| } | ||
| } | ||
| } | ||
| } |
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