creating monorepo with server

client/Cargo.toml

@@ -0,0 +1,12 @@
+[package]
+name = "client"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+shared = { path = "../shared" }
+cpal = "0.18.1"
+ringbuf = "0.5.1"
+serde = { version = "1.0.229", features = ["derive"] }
+serde_json = "1.0.151"
+tokio = { version = "1.53.1", features = ["full"] }

client/src/main.rs

@@ -0,0 +1,171 @@
+use cpal::traits::{DeviceTrait, HostTrait, StreamTrait};
+use ringbuf::{
+    HeapRb,
+    traits::{Consumer, Observer, Producer, Split},
+};
+use serde::{Deserialize, Serialize};
+use std::sync::Arc;
+use tokio::net::{TcpStream, UdpSocket};
+
+#[derive(Serialize, Deserialize, PartialEq)]
+enum ResponseStatus {
+    Ok,
+    Err,
+}
+
+#[derive(Serialize, Deserialize)]
+struct ConectionResponse {
+    status: ResponseStatus,
+    client_id: u32,
+}
+
+#[tokio::main]
+async fn main() {
+    let server_address = "127.0.0.1:8080";
+
+    let tcp_stream = TcpStream::connect(server_address)
+        .await
+        .expect("failed to connect using tcp");
+
+    tcp_stream.readable().await.expect("idk");
+    let mut tcp_buf = [0; 4096];
+
+    let mut session_client_id: u32 = 0;
+
+    match tcp_stream.try_read(&mut tcp_buf) {
+        Ok(n) => {
+            // let connection_response = str::from_utf8(&tcp_buf[0..n]).expect("failed to create str");
+
+            let connection_response: ConectionResponse =
+                serde_json::from_slice(&tcp_buf[0..n]).unwrap();
+
+            session_client_id = connection_response.client_id;
+
+            println!(
+                "tcp response status: {}, clientId: {}",
+                connection_response.status == ResponseStatus::Ok,
+                connection_response.client_id
+            );
+        }
+        Err(e) => eprintln!("failed to receive tcp packet: {}", e),
+    }
+
+    let socket = Arc::new(UdpSocket::bind("0.0.0.0:0").await.unwrap());
+
+    let output_socket = socket.clone();
+    let input_socket = socket.clone();
+
+    let host = cpal::default_host();
+
+    let input_device = host
+        .default_input_device()
+        .expect("no input device available");
+    let output_device = host
+        .default_output_device()
+        .expect("no output device available");
+
+    println!("input device: {}", input_device);
+    println!("output device: {}", output_device);
+
+    let config: cpal::StreamConfig = input_device
+        .default_input_config()
+        .expect("stream config init failed")
+        .into();
+
+    println!("stream config: {:?}", config);
+
+    let ring_buffer_ms = 150.0;
+    let ring_buffer_frames = (ring_buffer_ms / 1000.0) * config.sample_rate as f32;
+    let ring_buffer_samples = ring_buffer_frames as usize * config.channels as usize;
+
+    let ring_buffer_size = ring_buffer_samples;
+
+    let microphone_ring_buffer = HeapRb::<f32>::new(ring_buffer_size);
+    let (mut microphone_producer, mut microphone_consumer) = microphone_ring_buffer.split();
+
+    let speaker_ring_buffer = HeapRb::<f32>::new(ring_buffer_size);
+    let (mut speaker_producer, mut speaker_consumer) = speaker_ring_buffer.split();
+
+    let input_data_fn = move |data: &[f32], _: &cpal::InputCallbackInfo| {
+        for &sample in data {
+            if microphone_producer.try_push(sample).is_err() {}
+        }
+    };
+
+    let output_data_fn = move |data: &mut [f32], _: &cpal::OutputCallbackInfo| {
+        for sample in data {
+            *sample = match speaker_consumer.try_pop() {
+                Some(s) => s,
+                None => 0.0,
+            };
+        }
+    };
+
+    let err_fn = |err| eprintln!("stream error: {}", err);
+
+    let input_stream = input_device
+        .build_input_stream(config, input_data_fn, err_fn, None)
+        .expect("building input stream failed");
+    let output_stream = output_device
+        .build_output_stream(config, output_data_fn, err_fn, None)
+        .expect("building output stream failed");
+
+    input_stream.play().expect("failed to play input stream");
+    output_stream.play().expect("failed to play output stream");
+
+    tokio::spawn(async move {
+        let frames_needed = ((20.0 / 1000.0) * config.sample_rate as f32) as usize;
+        let mut frame_buffer = vec![0.0; frames_needed];
+
+        loop {
+            if microphone_consumer.occupied_len() >= frames_needed {
+                microphone_consumer.pop_slice(&mut frame_buffer);
+
+                let mut payload = Vec::with_capacity(frames_needed * 4);
+
+                payload.extend(session_client_id.to_be_bytes());
+
+                for sample in &frame_buffer {
+                    payload.extend_from_slice(&sample.to_le_bytes());
+                }
+
+                let _ = output_socket.send_to(&payload, server_address).await;
+            } else {
+                tokio::time::sleep(std::time::Duration::from_millis(2)).await;
+            }
+        }
+    });
+
+    tokio::spawn(async move {
+        let mut receive_buffer = vec![0u8; 4096];
+
+        loop {
+            match input_socket.recv_from(&mut receive_buffer).await {
+                Ok((len, _)) => {
+                    if len < 4 {
+                        continue;
+                    }
+
+                    let id_bytes: [u8; 4] = receive_buffer[0..4].try_into().unwrap();
+                    let client_id = u32::from_be_bytes(id_bytes);
+
+                    let audio_packet = &receive_buffer[4..len];
+
+                    let mut decoded_samples = Vec::with_capacity(audio_packet.len() / 4);
+
+                    for chunk in audio_packet.chunks_exact(4) {
+                        let bytes: [u8; 4] = chunk.try_into().unwrap();
+
+                        decoded_samples.push(f32::from_le_bytes(bytes));
+                    }
+
+                    speaker_producer.push_slice(&decoded_samples);
+                }
+                Err(e) => eprintln!("failed to receive udp packet: {}", e),
+            }
+        }
+    });
+
+    tokio::signal::ctrl_c().await.expect("failed to close");
+    println!("shutting down");
+}