Base protocol

client.js

@@ -0,0 +1,18 @@
+setInterval(() => {
+    const ws = new WebSocket('ws://localhost:7080');
+
+    function sendMessage(message) {
+        ws.send(JSON.stringify({ type: 'send_message', params: message }));
+    }
+
+    ws.onopen = () => {
+        console.log('WebSocket connection established');
+        sendMessage('Hello, Server!');
+    };
+
+    ws.onmessage = (event) => {
+        const message = JSON.parse(event.data);
+        console.log('Received:', message);
+        ws.close();
+    };
+}, 100)

src/client.rs

@@ -4,7 +4,10 @@ use std::{
     sync::{Arc, Mutex},
 };
 
-use tungstenite::{Message, WebSocket, accept};
+use anyhow::Error;
+use tungstenite::{Message, Utf8Bytes, WebSocket, accept};
+
+use crate::types::{FromClient, ToClient, WsMessage};
 
 #[derive(Clone)]
 pub struct Client(Arc<Mutex<WebSocket<TcpStream>>>);
@@ -34,11 +37,29 @@ impl Hash for Client {
 }
 
 impl Client {
-    pub fn read(&self) -> crate::Result<Message> {
-        self.0.lock().unwrap().read().map_err(|e| e.into())
+    pub fn read(&self) -> crate::Result<Option<WsMessage<FromClient>>> {
+        match self.0.lock().unwrap().read()? {
+            Message::Text(t) => {
+                let v = t.to_string();
+                match serde_json::from_str(&v) {
+                    Ok(f) => Ok(Some(WsMessage::FromClient(f))),
+                    Err(_) => Ok(Some(WsMessage::String(v))),
+                }
             }
 
-    pub fn send(&self, m: Message) -> crate::Result<()> {
-        self.0.lock().unwrap().send(m).map_err(|e| e.into())
+            Message::Binary(b) => Ok(Some(WsMessage::Binary(b))),
+
+            Message::Close(_) => Ok(None),
+
+            m => Err(Error::msg(format!("Invalid websocket format: {m}"))),
+        }
+    }
+
+    pub fn send(&self, m: ToClient) -> crate::Result<()> {
+        self.0
+            .lock()
+            .unwrap()
+            .send(Message::Text(Utf8Bytes::from(serde_json::to_string(&m)?)))
+            .map_err(|e| e.into())
     }
 }

src/lib.rs

@@ -11,12 +11,17 @@ pub mod loader;
 pub mod logger;
 pub mod macros;
 pub mod plugin;
+pub mod types;
 pub mod vfs;
 
 pub use anyhow::Result;
 pub use tungstenite;
 
-use crate::{client::Client, plugin::DynPlugin};
+use crate::{
+    client::Client,
+    plugin::DynPlugin,
+    types::{ToClient, data},
+};
 pub use once_cell;
 
 #[derive(serde::Serialize, serde::Deserialize)]
@@ -116,20 +121,29 @@ impl Server {
 
         // The main req/res loop
         loop {
-            let req = client.read()?;
-
+            match client.read()? {
+                Some(req) => {
+                    println!("Request: {:?}", req);
                     for plugin in self.plugins.lock().unwrap().iter_mut() {
                         plugin.on_request(&req, self);
                     }
 
-            if req.is_close() {
-                self.clients.lock().unwrap().remove(&client);
-                break;
+                    for c in self.clients.lock().unwrap().iter() {
+                        if c == &client {
+                            self.wrap_err(
+                                &client,
+                                c.send(ToClient::Message(data::Message {
+                                    from: format!("Server"),
+                                    contents: format!("Hello"),
+                                })),
+                            )?;
+                        }
+                    }
                 }
 
-            for c in self.clients.lock().unwrap().iter() {
-                if c != &client {
-                    self.wrap_err(&client, c.send(req.clone()))?;
+                None => {
+                    self.clients.lock().unwrap().remove(&client);
+                    break;
                 }
             }
         }

src/plugin.rs

@@ -1,15 +1,16 @@
 use std::sync::Arc;
 
-use tungstenite::Message;
-
-use crate::Server;
+use crate::{
+    Server,
+    types::{FromClient, WsMessage},
+};
 
 pub type DynPlugin = Box<dyn Plugin + Send + Sync>;
 
 pub trait Plugin {
     fn init(&mut self, server: &Arc<Server>);
     #[allow(unused_variables)]
-    fn on_request(&mut self, msg: &Message, server: &Arc<Server>) -> bool {
+    fn on_request(&mut self, msg: &WsMessage<FromClient>, server: &Arc<Server>) -> bool {
         false
     }
 }

src/types.rs

@@ -0,0 +1,40 @@
+use serde::{Deserialize, Serialize};
+use tungstenite::Bytes;
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(tag = "type", content = "params", rename_all = "snake_case")]
+pub enum FromClient {
+    SendMessage(String),
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(tag = "type", content = "params", rename_all = "snake_case")]
+pub enum FromServer {}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(tag = "type", content = "params", rename_all = "snake_case")]
+pub enum ToClient {
+    Message(data::Message),
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(tag = "type", content = "params", rename_all = "snake_case")]
+pub enum ToServer {}
+
+/// WebSocket for client messages
+#[derive(Debug, Clone)]
+pub enum WsMessage<T: Serialize + for<'de> Deserialize<'de>> {
+    FromClient(T),
+    Binary(Bytes),
+    String(String),
+}
+
+pub mod data {
+    use serde::{Deserialize, Serialize};
+
+    #[derive(Debug, Clone, Serialize, Deserialize)]
+    pub struct Message {
+        pub from: String,
+        pub contents: String,
+    }
+}