send user agent

src/main.rs

@@ -9,7 +9,7 @@ use tokio_tungstenite::{
     connect_async_with_config,
     tungstenite::{
         client::IntoClientRequest,
-        http::header::{AUTHORIZATION, HeaderValue},
+        http::header::{AUTHORIZATION, HeaderValue, USER_AGENT},
         Message,
     },
 };
@@ -69,6 +69,11 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
                 request.headers_mut().insert(AUTHORIZATION, auth_value);
             }
 
+            let user_agent = format!("{}/{}", env!("CARGO_PKG_NAME"), env!("CARGO_PKG_VERSION"));
+            request
+                .headers_mut()
+                .insert(USER_AGENT, HeaderValue::from_str(&user_agent).unwrap());
+
             info!("[{}] Connecting to {}", letter, url);
 
             if debug_enabled {