try conn

src/lib.rs

@@ -18,10 +18,14 @@ pub struct QuadWs {
     channel: WsChannnel,
 }
 impl QuadWs {
-    pub fn new(url: String) -> Self {
-        Self {
-            channel: ws_open_rust(url).unwrap()
+    pub fn new(url: String) -> Option<Self> {
+        let conn = ws_open_rust(url);
+        if conn.is_none() {
+            return None;
         }
+        Some(Self {
+            channel: conn.unwrap(),
+        })
     }
     pub fn write(&mut self, data: Vec<u8>) -> bool {
         ws_write_rust(&mut self.channel, data)