From 45ec502ecaa45878ec356b22c850cf58053e29ff Mon Sep 17 00:00:00 2001
From: devdesk <tami@tami.org.il>
Date: Fri, 19 Jan 2024 23:39:20 +0200
Subject: [PATCH] add a rust replay example, packet has identical data, src
 port, dest port, dest address
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

existing:

397	2041.095533360	192.168.0.1	192.168.0.255	UDP	252	8091 → 8092 [BAD UDP LENGTH 217 > IP PAYLOAD LENGTH] Len=209

new:

396	2008.927877440	192.168.0.1	192.168.0.255	UDP	70	8091 → 8092 Len=28

old bytes:

0000   ff ff ff ff ff ff 00 01 6c 59 f0 0a 08 00 45 00   ........lY....E.
0010   00 38 28 1d 00 00 80 11 90 47 c0 a8 00 01 c0 a8   .8(......G......
0020   00 ff 1f 9b 1f 9c 00 d9 00 00 01 20 01 80 1b 40   ........... ...@
0030   00 20 00 00 00 00 00 00 00 0f 00 00 00 01 00 00   . ..............
0040   01 00 00 20 2b 00 00 00 00 00 00 00 00 00 00 00   ... +...........
0050   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................
0060   00 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff   ................
0070   ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff   ................
0080   ff 00 00 00 00 00 00 00 02 01 00 00 00 00 00 00   ................
0090   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................
00a0   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................
00b0   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................
00c0   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................
00d0   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................
00e0   00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................
00f0   00 00 00 00 00 00 00 00 00 00 00 00               ............

new bytes:

0000   ff ff ff ff ff ff a8 20 66 11 cb 49 08 00 45 00   ....... f..I..E.
0010   00 38 2b 75 40 00 40 11 8c ef c0 a8 00 01 c0 a8   .8+u@.@.........
0020   00 ff 1f 9b 1f 9c 00 24 82 86 01 20 01 80 1b 40   .......$... ...@
0030   00 20 00 00 00 00 00 00 00 0f 00 00 00 01 00 00   . ..............
0040   01 00 00 20 2b 00                                 ... +.
---
 examples/replay.rs | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 examples/replay.rs

diff --git a/examples/replay.rs b/examples/replay.rs
new file mode 100644
index 0000000..eeba1dc
--- /dev/null
+++ b/examples/replay.rs
@@ -0,0 +1,17 @@
+use std::net::UdpSocket;
+
+fn main() -> std::io::Result<()> {
+    {
+        let socket = UdpSocket::bind("192.168.0.1:8091")?;
+
+        // Receives a single datagram message on the socket. If `buf` is too small to hold
+        // the message, it will be cut off.
+        let buf = [
+            1, 0x20, 1, 0x80, 0x1b, 0x40, 0, 0x20, 0, 0, 0, 0, 0, 0, 0, 0x0f, 0, 0, 0, 1, 0, 0, 1,
+            0, 0, 0x20, 0x2b, 0,
+        ];
+        socket.set_broadcast(true)?;
+        socket.send_to(&buf, "192.168.0.255:8092")?;
+    }
+    Ok(())
+}