use std::time::Duration; use futures_util::{SinkExt, StreamExt}; use tokio::{ net::{TcpListener, TcpStream}, sync::broadcast::{channel, Receiver, Sender}, }; use tokio_tungstenite::{tungstenite::Message, WebSocketStream}; use crate::Listener; const BUFFER_LENGTH: usize = 1000000; const MAX_TOLERATED_MESSAGE_COUNT: usize = 10; pub async fn start() { let socket = TcpListener::bind("192.168.1.2:2424").await.unwrap(); let (record_producer, record_consumer) = channel(BUFFER_LENGTH); let streamer_socket = TcpListener::bind("192.168.1.2:2525").await.unwrap(); if let Ok((streamer_tcp, streamer_info)) = streamer_socket.accept().await { let ws_stream = tokio_tungstenite::accept_async(streamer_tcp).await.unwrap(); println!("New Streamer: {:#?}", streamer_info); tokio::spawn(streamer_stream(record_producer, ws_stream)); } let (message_producer, message_consumer) = channel(BUFFER_LENGTH); let (buffered_producer, _) = channel(BUFFER_LENGTH); tokio::spawn(message_organizer(message_producer.clone(), record_consumer)); tokio::spawn(buffer_layer(message_consumer, buffered_producer.clone())); tokio::spawn(status_checker(buffered_producer.clone())); while let Ok((tcp_stream, listener_info)) = socket.accept().await { let ws_stream = tokio_tungstenite::accept_async(tcp_stream).await.unwrap(); println!("New Listener: {}", listener_info); let new_listener = Listener { ip: listener_info.ip(), port: listener_info.port(), }; tokio::spawn(stream( new_listener, ws_stream, buffered_producer.subscribe(), )); } } async fn status_checker(buffered_producer: Sender) { let mut listener_counter = buffered_producer.receiver_count(); //let mut buffer_len = buffered_producer.len(); loop { tokio::time::sleep(Duration::from_secs(3)).await; if buffered_producer.receiver_count() != 0 { if buffered_producer.len() > 2 { println!("Bottleneck: {}", buffered_producer.len()); } if listener_counter != buffered_producer.receiver_count() { listener_counter = buffered_producer.receiver_count(); println!("Listener(s): {}", listener_counter); } } } } async fn buffer_layer(mut message_consumer: Receiver, buffered_producer: Sender) { loop { tokio::time::sleep(Duration::from_millis(50)).await; while message_consumer.len() > 0 { match message_consumer.recv().await { Ok(message) => match buffered_producer.send(message) { Ok(_) => { } Err(_) => {} }, Err(_) => {} } } } } async fn streamer_stream( record_producer: Sender, mut ws_stream: WebSocketStream, ) { while let Some(message_with_question) = ws_stream.next().await { match message_with_question { Ok(message) => { //println!("{}", message.len()); match record_producer.send(message) { Ok(_) => {} Err(_) => {} } } Err(_) => {} } } } async fn message_organizer( message_producer: Sender, mut record_consumer: Receiver, ) { loop { match record_consumer.recv().await { Ok(single_message) => match message_producer.send(single_message) { Ok(_) => {} Err(_) => {} }, Err(_) => {} } tokio::time::sleep(Duration::from_millis(50)).await; } } async fn stream( listener: Listener, mut ws_stream: WebSocketStream, mut buffered_consumer: Receiver, ) { while let Ok(message) = buffered_consumer.recv().await { if buffered_consumer.len() > MAX_TOLERATED_MESSAGE_COUNT { println!( "{} Forced to Disconnect | Reason -> Slow Consumer", format!("{}:{}", listener.ip, listener.port) ); break; } match ws_stream.send(message).await { Ok(_) => { if let Err(_) = ws_stream.flush().await { println!( "{} is Disconnected", format!("{}:{}", listener.ip, listener.port) ); break; } } Err(_) => { println!( "{} is Disconnected", format!("{}:{}", listener.ip, listener.port) ); break; } } } }