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// This example explicitly creates and uses a single-threaded tokio
// runtime. See streamlisten_mt.rs for an example using tokio macros
// and multiple threads.
//
use futures::StreamExt;
use pcap::{Active, Capture, Device, Error, Packet, PacketCodec, PacketStream};
pub struct SimpleDumpCodec;
impl PacketCodec for SimpleDumpCodec {
type Item = String;
fn decode(&mut self, packet: Packet) -> Self::Item {
format!("{:?}", packet)
}
}
async fn start_new_stream(device: Device) -> PacketStream<Active, SimpleDumpCodec> {
match new_stream(device) {
Ok(stream) => stream,
Err(e) => {
println!("{:?}", e);
std::process::exit(1);
}
}
}
fn new_stream(device: Device) -> Result<PacketStream<Active, SimpleDumpCodec>, Error> {
// get the default Device
println!("Using device {}", device.name);
let cap = Capture::from_device(device)?
.immediate_mode(true)
.open()?
.setnonblock()?;
cap.stream(SimpleDumpCodec {})
}
fn main() {
let rt = tokio::runtime::Builder::new_current_thread()
.enable_io()
.build()
.unwrap();
let device = Device::lookup()
.expect("device lookup failed")
.expect("no device available");
let stream = rt.block_on(start_new_stream(device));
let fut = stream.for_each(move |s| {
println!("{:?}", s);
futures::future::ready(())
});
rt.block_on(fut);
}
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