Fix parse UDP and TCP packets correctly

Author: MarkusPettersson98

test/test-manager/src/network_monitor.rs

@@ -76,9 +76,9 @@ impl Codec {
 
         let mut source = SocketAddr::new(IpAddr::V4(packet.get_source()), 0);
         let mut destination = SocketAddr::new(IpAddr::V4(packet.get_destination()), 0);
+        let mut payload = vec![];
 
         let protocol = packet.get_next_level_protocol();
-
         match protocol {
             IpHeaderProtocols::Tcp => {
                 let seg = TcpPacket::new(packet.payload()).or_else(|| {
@@ -87,6 +87,7 @@ impl Codec {
                 })?;
                 source.set_port(seg.get_source());
                 destination.set_port(seg.get_destination());
+                payload = seg.payload().to_vec();
             }
             IpHeaderProtocols::Udp => {
                 let seg = UdpPacket::new(packet.payload()).or_else(|| {
@@ -95,13 +96,12 @@ impl Codec {
                 })?;
                 source.set_port(seg.get_source());
                 destination.set_port(seg.get_destination());
+                payload = seg.payload().to_vec();
             }
             IpHeaderProtocols::Icmp => {}
             proto => log::debug!("ignoring v4 packet, transport/protocol type {proto}"),
         }
 
-        let payload = packet.payload().to_vec();
-
         Some(ParsedPacket {
             source,
             destination,