move websocket creation to resource task

components/net/websocket_loader.rs

@@ -0,0 +1,125 @@
+/* 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/. */
+
+use hyper::header::Host;
+use net_traits::MessageData;
+use net_traits::hosts::replace_hosts;
+use net_traits::{WebSocketCommunicate, WebSocketConnectData, WebSocketDomAction, WebSocketNetworkEvent};
+use std::sync::{Arc, Mutex};
+use std::thread;
+use util::task::spawn_named;
+use websocket::client::receiver::Receiver;
+use websocket::client::request::Url;
+use websocket::client::sender::Sender;
+use websocket::header::Origin;
+use websocket::message::Type;
+use websocket::result::WebSocketResult;
+use websocket::stream::WebSocketStream;
+use websocket::ws::receiver::Receiver as WSReceiver;
+use websocket::ws::sender::Sender as Sender_Object;
+use websocket::ws::util::url::parse_url;
+use websocket::{Client, Message};
+
+/// *Establish a WebSocket Connection* as defined in RFC 6455.
+fn establish_a_websocket_connection(resource_url: &Url, net_url: (Host, String, bool),
+                                    origin: String)
+    -> WebSocketResult<(Sender<WebSocketStream>, Receiver<WebSocketStream>)> {
+
+    let host = Host {
+        hostname: resource_url.serialize_host().unwrap(),
+        port: resource_url.port_or_default()
+    };
+
+    let mut request = try!(Client::connect(net_url));
+    request.headers.set(Origin(origin));
+    request.headers.set(host);
+
+    let response = try!(request.send());
+    try!(response.validate());
+
+    Ok(response.begin().split())
+}
+
+pub fn init(connect: WebSocketCommunicate, connect_data: WebSocketConnectData) {
+    spawn_named(format!("WebSocket connection to {}", connect_data.resource_url), move || {
+        // Step 8: Protocols.
+
+        // Step 9.
+
+        // URL that we actually fetch from the network, after applying the replacements
+        // specified in the hosts file.
+        let net_url_result = parse_url(&replace_hosts(&connect_data.resource_url));
+        let net_url = match net_url_result {
+            Ok(net_url) => net_url,
+            Err(e) => {
+                debug!("Failed to establish a WebSocket connection: {:?}", e);
+                let _ = connect.event_sender.send(WebSocketNetworkEvent::Close);
+                return;
+            }
+        };
+        let channel = establish_a_websocket_connection(&connect_data.resource_url,
+                                                       net_url,
+                                                       connect_data.origin);
+        let (ws_sender, mut receiver) = match channel {
+            Ok(channel) => {
+                let _ = connect.event_sender.send(WebSocketNetworkEvent::ConnectionEstablished);
+                channel
+            },
+            Err(e) => {
+                debug!("Failed to establish a WebSocket connection: {:?}", e);
+                let _ = connect.event_sender.send(WebSocketNetworkEvent::Close);
+                return;
+            }
+
+        };
+
+        let ws_sender = Arc::new(Mutex::new(ws_sender));
+
+        let ws_sender_incoming = ws_sender.clone();
+        let resource_event_sender = connect.event_sender;
+        thread::spawn(move || {
+            for message in receiver.incoming_messages() {
+                let message: Message = match message {
+                    Ok(m) => m,
+                    Err(_) => break,
+                };
+                let message = match message.opcode {
+                    Type::Text => MessageData::Text(String::from_utf8_lossy(&message.payload).into_owned()),
+                    Type::Binary => MessageData::Binary(message.payload.into_owned()),
+                    Type::Ping => {
+                        let pong = Message::pong(message.payload);
+                        ws_sender_incoming.lock().unwrap().send_message(&pong).unwrap();
+                        continue;
+                    },
+                    Type::Pong => continue,
+                    Type::Close => {
+                        ws_sender_incoming.lock().unwrap().send_message(&message).unwrap();
+                        let _ = resource_event_sender.send(WebSocketNetworkEvent::Close);
+                        break;
+                    },
+                };
+                let _ = resource_event_sender.send(WebSocketNetworkEvent::MessageReceived(message));
+            }
+        });
+
+        let ws_sender_outgoing = ws_sender.clone();
+        let resource_action_receiver = connect.action_receiver;
+        thread::spawn(move || {
+            while let Ok(dom_action) = resource_action_receiver.recv() {
+                match dom_action {
+                    WebSocketDomAction::SendMessage(MessageData::Text(data)) => {
+                        ws_sender_outgoing.lock().unwrap().send_message(&Message::text(data)).unwrap();
+                    },
+                    WebSocketDomAction::SendMessage(MessageData::Binary(data)) => {
+                        ws_sender_outgoing.lock().unwrap().send_message(&Message::binary(data)).unwrap();
+                    },
+                    WebSocketDomAction::Close(code, reason) => {
+                        ws_sender_outgoing.lock().unwrap()
+                        .send_message(&Message::close_because(code, reason)).unwrap();
+                    },
+                }
+            }
+        });
+    });
+}