make dyn-ip server configurable

src/packets.rs

@@ -1,3 +1,5 @@
+use std::net::SocketAddr;
+
 use anyhow::bail;
 use bytemuck::{Pod, Zeroable};
 use tokio::{
@@ -156,7 +158,12 @@ impl Packet {
     }
 }
 
-pub async fn dyn_ip_update(number: u32, pin: u16, port: u16) -> anyhow::Result<std::net::Ipv4Addr> {
+pub async fn dyn_ip_update(
+    server: &SocketAddr,
+    number: u32,
+    pin: u16,
+    port: u16,
+) -> anyhow::Result<std::net::Ipv4Addr> {
     println!("dyn ip update: number={number} port={port}...");
 
     let mut packet = Packet::default();
@@ -171,7 +178,7 @@ pub async fn dyn_ip_update(number: u32, pin: u16, port: u16) -> anyhow::Result<s
     packet.data.extend_from_slice(&pin.to_le_bytes());
     packet.data.extend_from_slice(&port.to_le_bytes());
 
-    let mut socket = tokio::net::TcpStream::connect(("127.0.0.1", 11811)).await?;
+    let mut socket = tokio::net::TcpStream::connect(server).await?;
 
     let (mut reader, mut writer) = socket.split();