diff --git a/src/main.rs b/src/main.rs
index e7a11a9..8c1ef0b 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,3 +1,18 @@
+use std::process::exit;
+
+mod parser;
 fn main() {
-    println!("Hello, world!");
+    let protocol = parser::get_uri_format("vmess://");
+    match protocol {
+        Some(parser::protocols::Vless) => {
+            println!("The protocol was Vless");
+        }
+        Some(_) => {
+            println!("Some recognizable protocol")
+        }
+        None => {
+            println!("The protocol is not supported");
+            exit(0);
+        }
+    }
 }
diff --git a/src/parser/mod.rs b/src/parser/mod.rs
new file mode 100644
index 0000000..0b4f269
--- /dev/null
+++ b/src/parser/mod.rs
@@ -0,0 +1,18 @@
+pub enum protocols {
+    Vmess,
+    Vless,
+    Shadowsocks,
+    Trojan,
+    Socks,
+    Http,
+}
+
+pub fn get_uri_format(uri: &str) -> Option<protocols> {
+    if uri.starts_with("vmess://") {
+        return Some(protocols::Vmess);
+    }
+    if uri.starts_with("vless://") {
+        return Some(protocols::Vless);
+    }
+    return None;
+}