ask for server ip

src/main.rs

@@ -3,6 +3,7 @@ use std::{net::{UdpSocket, SocketAddr}, io::Write};
 use serde::{Serialize, Deserialize};
 use sha3::{Digest, Sha3_512};
 use sha2::Sha512;
+use std::io::{self, BufRead};
 
 mod big_array;
 use big_array::BigArray;
@@ -28,10 +29,26 @@ struct Packet {
     payload: [u8; MAX_PAYLOAD_U], //488 bytes
 } //512 bytes
 
+fn read_stdin(message: String) -> String {
+    print!("{}", message);
+    io::stdout().flush().unwrap();
+
+    let mut buffer = String::new();
+    let stdin = io::stdin();
+    let mut handle = stdin.lock();
+
+    handle.read_line(&mut buffer).unwrap();
+    buffer.trim().to_string()
+}
+
 fn main() {
 
     let timeout = 1;
-    let server_ip = "213.47.107.152:1337";
+    let mut server_ip = read_stdin("Enter server ip: ".to_string());//e.g. 213.47.107.152:1337
+    if server_ip.find(":").is_none() {
+        server_ip.push_str(":1337"); //default port
+    }
+
 
     let filename = "data.bin";