preserving tcp connection
This commit is contained in:
+105
-37
@@ -1,10 +1,10 @@
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use shared::{AudioStreamInfo, ResponseStatus, TcpRequest, TcpRequestData, TcpResponse};
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use std::sync::Arc;
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use std::{collections::HashMap, net::SocketAddr};
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use tokio::io::AsyncWriteExt;
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use tokio::io::{AsyncReadExt, AsyncWriteExt};
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use tokio::{
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net::{TcpListener, UdpSocket},
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sync::RwLock,
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sync::{RwLock, broadcast},
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};
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struct Client {
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@@ -13,15 +13,24 @@ struct Client {
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audio_streams: Option<Vec<AudioStreamInfo>>,
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}
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#[derive(Clone, Debug)]
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enum ServerEvent {
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NewStream(u32),
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UserConnected(u32),
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UserDisconnected(u32),
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ClosedStream(u32),
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}
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type State = Arc<RwLock<HashMap<u32, Client>>>;
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#[tokio::main]
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async fn main() {
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let listen_address = "0.0.0.0:8080";
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let (global_event_tx, _) = broadcast::channel::<ServerEvent>(16);
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let state: State = Arc::new(RwLock::new(HashMap::new()));
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let tcp_state = state.clone();
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let udp_state = state.clone();
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let tcp_listener = TcpListener::bind(listen_address)
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@@ -67,42 +76,101 @@ async fn main() {
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let (mut tcp_stream, tcp_address) =
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tcp_listener.accept().await.expect("failed to accept tcp");
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tcp_stream.readable().await.expect("idk");
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let mut tcp_buf = [0; 4096];
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let tcp_state = state.clone();
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match tcp_stream.try_read(&mut tcp_buf) {
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Ok(n) => match serde_json::from_slice::<TcpRequest>(&tcp_buf[0..n]) {
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Ok(request) => match request.data {
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TcpRequestData::NewConnection => {
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let client_id = next_client_id;
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next_client_id += 1;
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tcp_state.write().await.insert(
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client_id,
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Client {
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tcp_addr: tcp_address,
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udp_addr: None,
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audio_streams: None,
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let global_event_tx_clone = global_event_tx.clone();
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let mut global_event_rx = global_event_tx.subscribe();
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tokio::spawn(async move {
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let mut current_client_id: u32 = 0;
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let mut tcp_buf = [0; 4096];
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loop {
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tokio::select! {
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socket_result = tcp_stream.read(&mut tcp_buf) => {
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match socket_result {
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Ok(0) => {
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let _ = global_event_tx_clone.send(ServerEvent::UserDisconnected(current_client_id));
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println!("client disconnected: {}", tcp_address);
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break;
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}
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Ok(n) => match serde_json::from_slice::<TcpRequest>(&tcp_buf[0..n]) {
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Ok(request) => match request.data {
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TcpRequestData::NewConnection => {
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current_client_id = next_client_id;
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next_client_id += 1;
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tcp_state.write().await.insert(
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current_client_id,
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Client {
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tcp_addr: tcp_address,
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udp_addr: None,
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audio_streams: None,
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},
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);
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let _ = global_event_tx_clone.send(ServerEvent::UserConnected(current_client_id));
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println!("new client: {}, from: {}", current_client_id, tcp_address);
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let _ = tcp_stream
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.write_all(
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serde_json::to_string(&TcpResponse {
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status: ResponseStatus::Ok,
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data: shared::TcpResponseData::NewConnection {
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client_id: current_client_id,
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},
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})
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.expect("failed to parse response json TcpRequestData::NewConnection")
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.as_bytes(),
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)
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.await;
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}
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_ => eprintln!("i dont support other requests yet"),
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},
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Err(e) => eprintln!("failed to parse tcp packet: {}", e),
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},
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);
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println!("new client: {}, from: {}", client_id, tcp_address);
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let _ = tcp_stream
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.write_all(
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serde_json::to_string(&TcpResponse {
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status: ResponseStatus::Ok,
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data: shared::TcpResponseData::NewConnection {
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client_id: client_id,
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},
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})
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.expect("failed to parse response json")
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.as_bytes(),
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)
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.await;
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Err(e) => eprintln!("failed to receive tcp packet: {}", e),
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}
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}
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_ => eprintln!("i dont support other requests yet"),
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},
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Err(e) => eprintln!("failed to parse tcp packet: {}", e),
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},
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Err(e) => eprintln!("failed to receive tcp packet: {}", e),
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}
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event_result = global_event_rx.recv() => {
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match event_result {
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Ok(event) => {
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match event {
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ServerEvent::UserConnected(new_user_id) => {
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let _ = tcp_stream
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.write_all(
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serde_json::to_string(&TcpResponse {
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status: ResponseStatus::Ok,
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data: shared::TcpResponseData::UserConnected {
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user_id: new_user_id
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},
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})
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.expect("failed to parse response json ServerEvent::UserConnected")
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.as_bytes(),
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)
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.await;
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}
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ServerEvent::UserDisconnected(user_id) => {
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let _ = tcp_stream
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.write_all(
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serde_json::to_string(&TcpResponse {
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status: ResponseStatus::Ok,
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data: shared::TcpResponseData::UserDisconnected {
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user_id: user_id
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},
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})
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.expect("failed to parse response json ServerEvent::UserConnected")
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.as_bytes(),
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)
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.await;
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}
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_ => {
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println!("lkdahjsf");
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}
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}
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}
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Err(e) => eprintln!("error: {}", e),
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}
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}
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}
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}
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});
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}
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}
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