feat(runner): Rust updates and improvements (#196)

## Description
- Updates to latest Rust 2024 🎉
- Make DataChannel messages ordered on nestri-server side
- Bugfixes and code improvements + formatting

## Type of Change

- [x] Bug fix (non-breaking change)
- [x] New feature (non-breaking change)

## Checklist

- [x] I have updated relevant documentation
- [x] My code follows the project's coding style
- [x] My changes generate no new warnings/errors

---------

Co-authored-by: DatCaptainHorse <DatCaptainHorse@users.noreply.github.com>
Co-authored-by: Wanjohi <elviswanjohi47@gmail.com>

.github/workflows/runner.yml

@@ -7,6 +7,7 @@ on:
         paths:
             - "containers/runner.Containerfile"
             - "packages/scripts/**"
+            - "packages/server/**"
             - ".github/workflows/runner.yml"
     schedule:
         - cron: 7 0 * * 1,3,6 # Regularly to keep that build cache warm
@@ -16,6 +17,7 @@ on:
             - "containers/runner.Containerfile"
             - ".github/workflows/runner.yml"
             - "packages/scripts/**"
+            - "packages/server/**"
         tags:
             - v*.*.*
     release:

packages/server/Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "nestri-server"
 version = "0.1.0-alpha.2"
-edition = "2021"
+edition = "2024"
 
 [[bin]]
 name = "nestri-server"

packages/server/src/args/encoding_args.rs

@@ -1,24 +1,24 @@
 use std::ops::Deref;
 
-#[derive(Debug, PartialEq, Eq)]
+#[derive(Debug, PartialEq, Eq, Clone)]
 pub struct RateControlCQP {
     /// Constant Quantization Parameter (CQP) quality level
     pub quality: u32,
 }
-#[derive(Debug, PartialEq, Eq)]
+#[derive(Debug, PartialEq, Eq, Clone)]
 pub struct RateControlVBR {
     /// Target bitrate in kbps
     pub target_bitrate: i32,
     /// Maximum bitrate in kbps
     pub max_bitrate: i32,
 }
-#[derive(Debug, PartialEq, Eq)]
+#[derive(Debug, PartialEq, Eq, Clone)]
 pub struct RateControlCBR {
     /// Target bitrate in kbps
     pub target_bitrate: i32,
 }
 
-#[derive(Debug, PartialEq, Eq)]
+#[derive(Debug, PartialEq, Eq, Clone)]
 pub enum RateControl {
     /// Constant Quantization Parameter
     CQP(RateControlCQP),

packages/server/src/enc_helper.rs

@@ -1,4 +1,5 @@
-use crate::gpu::{self, get_gpu_by_card_path, get_gpus_by_vendor, GPUInfo};
+use crate::args::encoding_args::RateControl;
+use crate::gpu::{self, GPUInfo, get_gpu_by_card_path, get_gpus_by_vendor};
 use gst::prelude::*;
 
 #[derive(Debug, Eq, PartialEq, Clone)]
@@ -245,7 +246,10 @@ pub fn encoder_gop_params(encoder: &VideoEncoderInfo, gop_size: u32) -> VideoEnc
     })
 }
 
-pub fn encoder_low_latency_params(encoder: &VideoEncoderInfo) -> VideoEncoderInfo {
+pub fn encoder_low_latency_params(
+    encoder: &VideoEncoderInfo,
+    rate_control: &RateControl,
+) -> VideoEncoderInfo {
     let mut encoder_optz = encoder_gop_params(encoder, 30);
 
     match encoder_optz.encoder_api {
@@ -283,13 +287,8 @@ pub fn encoder_low_latency_params(encoder: &VideoEncoderInfo) -> VideoEncoderInf
                 encoder_optz.set_parameter("tune", "zerolatency");
             }
             "svtav1enc" => {
-                encoder_optz.set_parameter("preset", "12");
-                let suffix = if encoder_optz.get_parameters_string().contains("cbr") {
-                    ":pred-struct=1"
-                } else {
-                    ""
-                };
-                encoder_optz.set_parameter("parameters-string", &format!("lookahead=0{}", suffix));
+                encoder_optz.set_parameter("preset", "11");
+                encoder_optz.set_parameter("parameters-string", "lookahead=0");
             }
             "av1enc" => {
                 encoder_optz.set_parameter("usage-profile", "realtime");

packages/server/src/main.rs

@@ -4,13 +4,13 @@ mod gpu;
 mod latency;
 mod messages;
 mod nestrisink;
-mod websocket;
 mod proto;
+mod websocket;
 
 use crate::args::encoding_args;
+use crate::gpu::GPUVendor;
 use crate::nestrisink::NestriSignaller;
 use crate::websocket::NestriWebSocket;
-use crate::gpu::GPUVendor;
 use futures_util::StreamExt;
 use gst::prelude::*;
 use gstrswebrtc::signaller::Signallable;
@@ -55,12 +55,19 @@ fn handle_gpus(args: &args::Args) -> Option<gpu::GPUInfo> {
             gpu = filtered_gpus.get(args.device.gpu_index as usize).cloned();
         } else {
             // get first GPU
-            gpu = filtered_gpus.into_iter().find(|g| *g.vendor() != GPUVendor::UNKNOWN);
+            gpu = filtered_gpus
+                .into_iter()
+                .find(|g| *g.vendor() != GPUVendor::UNKNOWN);
         }
     }
     if gpu.is_none() {
-        println!("No GPU found with the specified parameters: vendor='{}', name='{}', index='{}', card_path='{}'",
-                 args.device.gpu_vendor, args.device.gpu_name, args.device.gpu_index, args.device.gpu_card_path);
+        println!(
+            "No GPU found with the specified parameters: vendor='{}', name='{}', index='{}', card_path='{}'",
+            args.device.gpu_vendor,
+            args.device.gpu_name,
+            args.device.gpu_index,
+            args.device.gpu_card_path
+        );
         return None;
     }
     let gpu = gpu.unwrap();
@@ -83,7 +90,11 @@ fn handle_encoder_video(args: &args::Args) -> Option<enc_helper::VideoEncoderInf
             encoder.codec.to_str(),
             encoder.encoder_api.to_str(),
             encoder.encoder_type.to_str(),
-            if let Some(gpu) = &encoder.gpu_info { gpu.device_name() } else { "CPU" },
+            if let Some(gpu) = &encoder.gpu_info {
+                gpu.device_name()
+            } else {
+                "CPU"
+            },
         );
     }
     // Pick most suitable video encoder based on given arguments
@@ -99,8 +110,12 @@ fn handle_encoder_video(args: &args::Args) -> Option<enc_helper::VideoEncoderInf
         );
     }
     if video_encoder.is_none() {
-        println!("No video encoder found with the specified parameters: name='{}', vcodec='{}', type='{}'",
-                 args.encoding.video.encoder, args.encoding.video.codec, args.encoding.video.encoder_type);
+        println!(
+            "No video encoder found with the specified parameters: name='{}', vcodec='{}', type='{}'",
+            args.encoding.video.encoder,
+            args.encoding.video.codec,
+            args.encoding.video.encoder_type
+        );
         return None;
     }
     let video_encoder = video_encoder.unwrap();
@@ -113,7 +128,8 @@ fn handle_encoder_video_settings(
     args: &args::Args,
     video_encoder: &enc_helper::VideoEncoderInfo,
 ) -> enc_helper::VideoEncoderInfo {
-    let mut optimized_encoder = enc_helper::encoder_low_latency_params(&video_encoder);
+    let mut optimized_encoder =
+        enc_helper::encoder_low_latency_params(&video_encoder, &args.encoding.video.rate_control);
     // Handle rate-control method
     match &args.encoding.video.rate_control {
         encoding_args::RateControl::CQP(cqp) => {
@@ -240,14 +256,14 @@ async fn main() -> Result<(), Box<dyn Error>> {
         &match &args.encoding.audio.rate_control {
             encoding_args::RateControl::CBR(cbr) => cbr.target_bitrate * 1000i32,
             encoding_args::RateControl::VBR(vbr) => vbr.target_bitrate * 1000i32,
-            _ => 128i32,
+            _ => 128000i32,
         },
     );
 
     /* Video */
     // Video Source Element
     let video_source = gst::ElementFactory::make("waylanddisplaysrc").build()?;
-    video_source.set_property("render-node", &gpu.render_path());
+    video_source.set_property_from_str("render-node", gpu.render_path());
 
     // Caps Filter Element (resolution, fps)
     let caps_filter = gst::ElementFactory::make("capsfilter").build()?;
@@ -289,6 +305,7 @@ async fn main() -> Result<(), Box<dyn Error>> {
     let webrtcsink = BaseWebRTCSink::with_signaller(Signallable::from(signaller.clone()));
     webrtcsink.set_property_from_str("stun-server", "stun://stun.l.google.com:19302");
     webrtcsink.set_property_from_str("congestion-control", "disabled");
+    webrtcsink.set_property("do-retransmission", false);
 
     // Add elements to the pipeline
     pipeline.add_many(&[
@@ -343,7 +360,9 @@ async fn main() -> Result<(), Box<dyn Error>> {
     }
 
     // Optimize latency of pipeline
-    video_source.sync_state_with_parent().expect("failed to sync with parent");
+    video_source
+        .sync_state_with_parent()
+        .expect("failed to sync with parent");
     video_source.set_property("do-timestamp", &true);
     audio_source.set_property("do-timestamp", &true);
     pipeline.set_property("latency", &0u64);

packages/server/src/nestrisink/imp.rs

@@ -1,6 +1,6 @@
 use crate::messages::{
-    decode_message_as, encode_message, AnswerType, JoinerType, MessageAnswer, MessageBase,
-    MessageICE, MessageJoin, MessageSDP,
+    AnswerType, JoinerType, MessageAnswer, MessageBase, MessageICE, MessageJoin, MessageSDP,
+    decode_message_as, encode_message,
 };
 use crate::proto::proto::proto_input::InputType::{
     KeyDown, KeyUp, MouseKeyDown, MouseKeyUp, MouseMove, MouseMoveAbs, MouseWheel,
@@ -10,7 +10,7 @@ use crate::websocket::NestriWebSocket;
 use glib::subclass::prelude::*;
 use gst::glib;
 use gst::prelude::*;
-use gst_webrtc::{gst_sdp, WebRTCSDPType, WebRTCSessionDescription};
+use gst_webrtc::{WebRTCSDPType, WebRTCSessionDescription, gst_sdp};
 use gstrswebrtc::signaller::{Signallable, SignallableImpl};
 use prost::Message;
 use std::collections::HashSet;
@@ -144,8 +144,9 @@ impl Signaller {
                             &[
                                 &"nestri-data-channel",
                                 &gst::Structure::builder("config")
-                                    .field("ordered", &false)
+                                    .field("ordered", &true)
                                     .field("max-retransmits", &0u32)
+                                    .field("priority", "high")
                                     .build(),
                             ],
                         ),
@@ -337,12 +338,14 @@ impl ObjectSubclass for Signaller {
 impl ObjectImpl for Signaller {
     fn properties() -> &'static [glib::ParamSpec] {
         static PROPS: LazyLock<Vec<glib::ParamSpec>> = LazyLock::new(|| {
-            vec![glib::ParamSpecBoolean::builder("manual-sdp-munging")
+            vec![
+                glib::ParamSpecBoolean::builder("manual-sdp-munging")
                     .nick("Manual SDP munging")
                     .blurb("Whether the signaller manages SDP munging itself")
                     .default_value(false)
                     .read_only()
-                .build()]
+                    .build(),
+            ]
         });
 
         PROPS.as_ref()

packages/server/src/nestrisink/mod.rs

@@ -1,8 +1,8 @@
-use std::sync::Arc;
+use crate::websocket::NestriWebSocket;
 use gst::glib;
 use gst::subclass::prelude::*;
 use gstrswebrtc::signaller::Signallable;
-use crate::websocket::NestriWebSocket;
+use std::sync::Arc;
 
 mod imp;
 

packages/server/src/websocket.rs

@@ -1,17 +1,17 @@
-use crate::messages::{decode_message, encode_message, MessageBase, MessageLog};
+use crate::messages::{MessageBase, MessageLog, decode_message, encode_message};
+use futures_util::StreamExt;
 use futures_util::sink::SinkExt;
 use futures_util::stream::{SplitSink, SplitStream};
-use futures_util::StreamExt;
 use log::{Level, Log, Metadata, Record};
 use std::collections::HashMap;
 use std::error::Error;
 use std::sync::{Arc, RwLock};
 use std::time::Duration;
 use tokio::net::TcpStream;
-use tokio::sync::{mpsc, Mutex, Notify};
+use tokio::sync::{Mutex, Notify, mpsc};
 use tokio::time::sleep;
 use tokio_tungstenite::tungstenite::{Message, Utf8Bytes};
-use tokio_tungstenite::{connect_async, MaybeTlsStream, WebSocketStream};
+use tokio_tungstenite::{MaybeTlsStream, WebSocketStream, connect_async};
 
 type Callback = Box<dyn Fn(String) + Send + Sync>;
 type WSRead = SplitStream<WebSocketStream<MaybeTlsStream<TcpStream>>>;
@@ -95,7 +95,9 @@ impl NestriWebSocket {
                 while let Some(message_result) = ws_read.next().await {
                     match message_result {
                         Ok(message) => {
-                            let data = message.into_text().expect("failed to turn message into text");
+                            let data = message
+                                .into_text()
+                                .expect("failed to turn message into text");
                             let base_message = match decode_message(data.to_string()) {
                                 Ok(base_message) => base_message,
                                 Err(e) => {