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// SPDX-License-Identifier: MIT
use netlink_packet_core::{NLM_F_DUMP, NLM_F_REQUEST};
use netlink_packet_route::{
rtnl::{LinkMessage, RtnlMessage},
NetlinkMessage,
};
fn main() {
// Create the netlink message, that contains the rtnetlink
// message
let mut packet =
NetlinkMessage::from(RtnlMessage::GetLink(LinkMessage::default()));
// Set a few fields in the packet's header
packet.header.flags = NLM_F_DUMP | NLM_F_REQUEST;
packet.header.sequence_number = 1;
// Before serializing the packet, it is very important to call
// finalize() to ensure the header of the message is consistent
// with its payload. Otherwise, a panic may occur when calling
// `serialize()`
packet.finalize();
// Prepare a buffer to serialize the packet. Note that we never
// set explicitely `packet.header.length` above. This was done
// automatically when we called `finalize()`
let mut buf = vec![0; packet.header.length as usize];
// Serialize the packet
packet.serialize(&mut buf[..]);
// Deserialize the packet
let deserialized_packet = NetlinkMessage::<RtnlMessage>::deserialize(&buf)
.expect("Failed to deserialize message");
// Normally, the deserialized packet should be exactly the same
// than the serialized one.
assert_eq!(deserialized_packet, packet);
println!("{packet:?}");
}
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