update default config

config.yaml

@@ -1,6 +1,6 @@
 bind:
-  addr: 127.0.0.1
-  listen: 8080
+  addr: 0.0.0.0
+  listen: 80
 
 server:
   info: "Powered by Rust"

src/config.rs

@@ -35,7 +35,7 @@ fn init_config() -> Config {
     let default_config = Config {
         bind: BindConfig {
             addr: "0.0.0.0".to_owned(),
-            listen: 8080,
+            listen: 80,
         },
         server: ServerConfig {
             info: "Powered by Rust".to_owned(),

src/main.rs

@@ -210,8 +210,11 @@ async fn handle_connection(mut stream: TcpStream) -> io::Result<(i32, String)> {
 #[derive(Parser)]
 #[command(version, about, long_about = None)]
 struct Args {
-    #[arg(short, long, default_value = "")]
-    config: String,
+    #[arg(short, long, default_value = None, help = "set config file path")]
+    config: Option<String>,
+
+    #[arg(short, long, default_value = None, help = "set the listening port")]
+    port: Option<i32>,
 }
 
 #[tokio::main]
@@ -225,10 +228,14 @@ async fn main() -> Result<(), Box<dyn Error>> {
     }
 
     let arg = Args::parse();
-    *CONFIG_PATH.lock()? = arg.config;
-
-    let listener =
-        TcpListener::bind(format!("{}:{}", CONFIG.bind.addr, CONFIG.bind.listen)).await?;
+    *CONFIG_PATH.lock()? = arg.config.unwrap_or(String::new());
+
+    let listener = TcpListener::bind(format!(
+        "{}:{}",
+        CONFIG.bind.addr,
+        arg.port.unwrap_or(CONFIG.bind.listen)
+    ))
+    .await?;
 
     loop {
         let (mut stream, addr) = listener.accept().await?;