main.rs: add show local ip

Cargo.toml

@@ -2,8 +2,8 @@
 name = "breedenter-rust"
 version = "0.1.5"
 edition = "2021"
-authors = ["wwng <[email protected]>"]
+authors = ["wwng <[email protected]>"]
 description = "A rust version of breedenter."
 
 [dependencies]
-open = "3.2.0"
+open = "3.2.0"

src/main.rs

@@ -3,7 +3,26 @@ use std::io::Read;
 use std::net::UdpSocket;
 use std::thread;
 use std::time::Duration;
+
+fn localip_get() -> Option<String> {
+    let socket = match UdpSocket::bind("0.0.0.0:0") {
+        Ok(s) => s,
+        Err(_) => return None,
+    };
+
+    match socket.connect("192.168.1.1:80") {
+        Ok(()) => (),
+        Err(_) => return None,
+    };
+
+    match socket.local_addr() {
+        Ok(addr) => return Some(addr.ip().to_string()),
+        Err(_) => return None,
+    };
+}
+
 fn main() -> std::io::Result<()> {
+    println!("Local IP: {}", localip_get().unwrap());
     let socket = UdpSocket::bind("0.0.0.0:37540")?;
     socket.set_broadcast(true)?;
     socket.set_nonblocking(true).unwrap();