Init.

.gitignore

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+/target

Cargo.lock

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+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "my_udp_server"
+version = "0.1.0"

Cargo.toml

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+[package]
+name = "my_udp_server"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]

src/main.rs

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+// UDP server
+use std::net::UdpSocket;
+
+
+fn main() -> std::io::Result<()> {
+    let socket_result: Result<UdpSocket, std::io::Error> = UdpSocket::bind("127.0.0.1:7878");
+    let mut socket: UdpSocket = match socket_result {
+        Ok(s) => s,
+        Err(e) => {
+            println!("Failed to bind socket: {}", e);
+            return Err(e);
+        }
+    };
+    
+    println!("UDP server listening on 127.0.0.1:7878");
+    
+    // Buffer for incoming data (512 bytes)
+    let mut buffer: [u8; 512] = [0; 512];
+
+
+    loop {
+        // Receive data from the client
+        let (bytes_received, src_addr) = socket.recv_from(&mut buffer)?;
+        println!(
+            "Received {} bytes from {}: {}",
+            bytes_received,
+            src_addr,
+            String::from_utf8_lossy(&buffer[..bytes_received])
+        );
+
+
+        // Echo the data back to the client
+        socket.send_to(&buffer[..bytes_received], src_addr)?;
+    }
+}