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Merge pull request #128 from paullouisageneau/signaling-rust

Rewrite Rust signaling server example
Paul-Louis Ageneau 5 年之前
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327cc9e011

+ 3 - 0
README.md

@@ -196,3 +196,6 @@ ws->open("wss://my.websocket/service");
 
 ```
 
+## External resources
+- Rust wrappers for libdatachannel: [lerouxrgd/datachannel-rs](https://github.com/lerouxrgd/datachannel-rs)
+

+ 2 - 1
examples/README.md

@@ -1,10 +1,11 @@
 # Examples for libdatachannel
 
-This directory contains different WebRTC clients and WebSocket + JSON signaling servers.
+This directory contains different WebRTC clients and compatible WebSocket + JSON signaling servers.
 
 - [client](client) uses libdatachannel to implement WebRTC Data Channels with WebSocket signaling
 - [web](web) contains an equivalent implementation for web browsers and a node.js signaling server
 - [signaling-server-python](signaling-server-python) contains a similar signaling server in Python
+- [signaling-server-rust](signaling-server-rust) contains a similar signaling server in Rust (see [lerouxrgd/datachannel-rs](https://github.com/lerouxrgd/datachannel-rs) for Rust wrappers)
 
 Additionally, it contains two debugging tools for libdatachannel with copy-pasting as signaling:
 - [copy-paste](copy-paste) using the C++ API

+ 1 - 1
examples/client/main.cpp

@@ -49,7 +49,7 @@ shared_ptr<PeerConnection> createPeerConnection(const Configuration &config,
 string randomId(size_t length);
 
 int main(int argc, char **argv) {
-	rtc::InitLogger(LogLevel::Warning);
+	rtc::InitLogger(LogLevel::Debug);
 
 	Configuration config;
 	config.iceServers.emplace_back("stun:stun.l.google.com:19302"); // change to your STUN server

+ 1 - 1
examples/signaling-server-python/signaling-server.py

@@ -1,6 +1,6 @@
 #!/usr/bin/env python
 #
-# Signaling server example for libdatachannel
+# Python signaling server example for libdatachannel
 # Copyright (c) 2020 Paul-Louis Ageneau
 #
 # This program is free software: you can redistribute it and/or modify

文件差異過大導致無法顯示
+ 467 - 385
examples/signaling-server-rust/Cargo.lock


+ 8 - 12
examples/signaling-server-rust/Cargo.toml

@@ -1,18 +1,14 @@
 [package]
-name = "webrtc_server"
+name = "libdatachannel_signaling_server_example"
 version = "0.1.0"
-authors = ["Nico Chatzi <[email protected]>"]
+authors = ["Paul-Louis Ageneau"]
 edition = "2018"
 
 [dependencies]
-rocket = "0.4.4"
-rocket_cors = "0.5.0"
-serde = "1.0"
-serde_json = "1.0"
-serde_derive = "1.0"
-bincode = "1.2.1"
+tokio = { version = "*", features = ["full"] }
+tungstenite = "*"
+tokio-tungstenite = "*"
+futures-util = "*"
+futures-channel = "*"
+json = "*"
 
-[dependencies.rocket_contrib]
-version = "0.4.4"
-default-features = false
-features = ["json"]

+ 661 - 0
examples/signaling-server-rust/LICENSE

@@ -0,0 +1,661 @@
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+
+  13. Remote Network Interaction; Use with the GNU General Public License.
+
+  Notwithstanding any other provision of this License, if you modify the
+Program, your modified version must prominently offer all users
+interacting with it remotely through a computer network (if your version
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+3 of the GNU General Public License.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU Affero General Public License from time to time.  Such new versions
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+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
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+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
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+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
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+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published
+    by the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
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+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
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+specific requirements.
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<http://www.gnu.org/licenses/>.

+ 98 - 137
examples/signaling-server-rust/src/main.rs

@@ -1,147 +1,108 @@
-#![feature(proc_macro_hygiene, decl_macro)]
-
-#[macro_use]
-extern crate rocket;
-extern crate rocket_cors;
-#[macro_use]
-extern crate rocket_contrib;
-#[macro_use]
-extern crate serde_derive;
-
-extern crate bincode;
-
-use std::sync::Mutex;
-
-use rocket_contrib::json::{Json, JsonValue};
-
-use rocket::http::Method; // 1.
-
-use rocket_cors::{
-    AllowedHeaders, AllowedOrigins, Error, // 2.
-    Cors, CorsOptions // 3.
-};
-
-fn make_cors() -> Cors {
-    let allowed_origins = AllowedOrigins::some_exact(&[ // 4.
-        "http://localhost:8080",
-        "http://127.0.0.1:8080",
-        "http://localhost:8000",
-        "http://0.0.0.0:8000",
-    ]);
-
-    CorsOptions { // 5.
-        allowed_origins,
-        allowed_methods: vec![Method::Get, Method::Post].into_iter().map(From::from).collect(), // 1.
-        allowed_headers: AllowedHeaders::some(&[
-            "Authorization",
-            "Accept",
-            "Content-Type",
-            "User-Agent",
-            "Access-Control-Allow-Origin", // 6.
-        ]),
-        allow_credentials: true,
-        ..Default::default()
-    }
-    .to_cors()
-    .expect("error while building CORS")
-}
-
-type Data = Mutex<String>;
-
-#[derive(Serialize, Deserialize, Clone, PartialEq, Debug)]
-pub struct ChannelData {
-    pub description: String,
-    pub candidate: String,
-}
-
-impl Default for ChannelData {
-    fn default() -> ChannelData {
-        ChannelData {
-            description: "".to_owned(),
-            candidate: "".to_owned(),
+/*
+ * Rust signaling server example for libdatachannel
+ * Copyright (c) 2020 Paul-Louis Ageneau
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Affero General Public License as published
+ * by the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+extern crate tokio;
+extern crate tungstenite;
+extern crate futures_util;
+extern crate futures_channel;
+extern crate json;
+
+use std::env;
+use std::collections::HashMap;
+use std::sync::{Arc, Mutex};
+
+use tokio::net::{TcpListener, TcpStream};
+use tungstenite::protocol::Message;
+use tungstenite::handshake::server::{Request, Response};
+
+use futures_util::{future, pin_mut, StreamExt};
+use futures_util::stream::TryStreamExt;
+use futures_channel::mpsc;
+
+type Id = String;
+type Tx = mpsc::UnboundedSender<Message>;
+type ClientsMap = Arc<Mutex<HashMap<Id, Tx>>>;
+
+async fn handle(clients: ClientsMap, stream: TcpStream) {
+    let mut client_id = Id::new();
+    let callback = |req: &Request, response: Response| {
+        let path: &str = req.uri().path();
+        let tokens: Vec<&str> = path.split('/').collect();
+        client_id = tokens[1].to_string();
+        return Ok(response);
+    };
+
+    let websocket = tokio_tungstenite::accept_hdr_async(stream, callback)
+        .await.expect("WebSocket handshake failed");
+	println!("Client {} connected", &client_id);
+
+    let (tx, rx) = mpsc::unbounded();
+    clients.lock().unwrap().insert(client_id.clone(), tx);
+
+    let (outgoing, incoming) = websocket.split();
+    let forward = rx.map(Ok).forward(outgoing);
+    let process = incoming.try_for_each(|msg| {
+        if msg.is_text() {
+            let text = msg.to_text().unwrap();
+            println!("Client {} << {}", &client_id, &text);
+
+            // Parse
+            let mut content = json::parse(text).unwrap();
+            let remote_id = content["id"].to_string();
+            let mut locked = clients.lock().unwrap();
+
+            match locked.get_mut(&remote_id) {
+                Some(remote) => {
+                    // Format
+                    content.insert("id", client_id.clone()).unwrap();
+                    let text = json::stringify(content);
+
+                    // Send to remote
+                    println!("Client {} >> {}", &remote_id, &text);
+                    remote.unbounded_send(Message::text(text)).unwrap();
+                },
+                _ => println!("Client {} not found", &remote_id),
+            }
         }
-    }
-}
+        future::ok(())
+    });
 
-#[post("/json", data = "<payload>")]
-fn new(payload: String, state: rocket::State<Data>) -> JsonValue {
-    let mut data = state.lock().expect("state locked");
-    *data = payload;
-    json!({ "status": "ok" })
-}
+    pin_mut!(process, forward);
+    future::select(process, forward).await;
 
-#[get("/json")]
-fn get(state: rocket::State<Data>) -> Option<String> {
-    let data = state.lock().expect("state locked");
-    Some(data.clone())
+    println!("Client {} disconnected", &client_id);
+    clients.lock().unwrap().remove(&client_id);
 }
 
-#[catch(404)]
-fn not_found() -> JsonValue {
-    json!({
-        "status": "error",
-        "reason": "Resource was not found."
-    })
-}
+#[tokio::main]
+async fn main() -> Result<(), std::io::Error> {
+    let service = env::args().nth(1).unwrap_or("8000".to_string());
+    let endpoint = format!("127.0.0.1:{}", service);
 
-fn rocket() -> rocket::Rocket {
-    rocket::ignite()
-        .mount("/state", routes![new, get])
-        .register(catchers![not_found])
-        .manage(Mutex::new(String::new()))
-        .attach(make_cors())
-}
+    let mut listener = TcpListener::bind(endpoint)
+    	.await.expect("Listener binding failed");
 
-fn main() {
-    rocket().launch();
-}
+    let clients = ClientsMap::new(Mutex::new(HashMap::new()));
 
-#[cfg(test)]
-mod test {
-    use super::*;
-
-    use rocket::http::{ContentType, Status};
-    use rocket::local::Client;
-
-    #[test]
-    fn test_save_load() {
-        let data = ChannelData {
-            description: "v=0
-            o=- 3294530454 0 IN IP4 127.0.0.1
-            s=-
-            t=0 0
-            a=group:BUNDLE 0
-            m=application 9 UDP/DTLS/SCTP webrtc-datachannel
-            c=IN IP4 0.0.0.0
-            a=ice-ufrag:ntAX
-            a=ice-pwd:H59OKuJgItlvJZR5E78QYo
-            a=ice-options:trickle
-            a=mid:0
-            a=setup:actpass
-            a=dtls-id:1
-            a=fingerprint:sha-256 72:0E:8D:8C:9F:A2:E4:40:E7:2E:23:EF:F6:E7:89:94:0F:6B:78:9A:36:61:43:2C:6A:45:30:62:CB:68:B3:73
-            a=sctp-port:5000
-            a=max-message-size:262144".to_owned(),
-            candidate: "a=candidate:1 1 UDP 2122317823 10.0.1.83 55100 typ host".to_owned(),
-        };
-        println!("{:?}", data);
-        let client = Client::new(rocket()).unwrap();
-
-        let res = client
-            .post("/state/json")
-            .header(ContentType::JSON)
-            .remote("127.0.0.1:8000".parse().unwrap())
-            .body(serde_json::to_vec(&data).unwrap())
-            .dispatch();
-        assert_eq!(res.status(), Status::Ok);
-
-        let mut res = client
-            .get("/state/json")
-            .header(ContentType::JSON)
-            .dispatch();
-        assert_eq!(res.status(), Status::Ok);
-
-        let body = res.body().unwrap().into_string().unwrap();
-        println!("{}", body);
+    while let Ok((stream, _)) = listener.accept().await {
+        tokio::spawn(handle(clients.clone(), stream));
     }
+
+    return Ok(())
 }
+

部分文件因文件數量過多而無法顯示