misc: repurpose udpclient to create raw packet dump files

src/bin/udpclient.rs

@@ -1,18 +1,39 @@
 use f1_game_packet_parser::parse;
 use std::error::Error;
+use std::fs::File;
+use std::io::{BufWriter, Write};
 use std::net::UdpSocket;
+use std::path::PathBuf;
 
 fn main() -> Result<(), Box<dyn Error>> {
     let addr = "127.0.0.1:20777";
     let socket = UdpSocket::bind(addr)?;
-    let mut buf = [0u8; 2048];
+    let mut buf = [0u8; 1464];
 
     println!("UDP client is listening on {}", addr);
 
     loop {
-        let (msg_len, _) = socket.recv_from(&mut buf)?;
+        let (amt, _) = socket.recv_from(&mut buf)?;
-        let msg = &buf[..msg_len];
 
-        parse(msg)?;
+        let raw_data = &buf[..amt];
+        let packet = parse(raw_data)?;
+        let file_path = PathBuf::from(format!(
+            "tests/data/{}-{:0>2}{}.bin",
+            packet.header.packet_format,
+            packet.header.packet_id as u8,
+            if let Some(event) = &packet.event {
+                format!("-{}", event.code)
+            } else {
+                "".to_string()
+            }
+        ));
+
+        if !file_path.exists() {
+            let bin_file = File::create(file_path)?;
+            let mut writer = BufWriter::new(bin_file);
+
+            writer.write_all(raw_data)?;
+            writer.flush()?;
+        }
     }
 }