1 // Copyright 2024 Google LLC 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // https://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 use capture::pcap; 16 use std::io::Cursor; 17 use std::time::Instant; 18 use tokio; 19 use tokio::io::BufReader; 20 use tokio::runtime::Runtime; 21 dns_benchmark()22async fn dns_benchmark() { 23 const DATA: &[u8] = include_bytes!("../../capture/data/dns.cap"); 24 25 let mut reader = BufReader::new(Cursor::new(DATA)); 26 let header = pcap::read_file_header(&mut reader).await.unwrap(); 27 assert_eq!(header.linktype, pcap::LinkType::Ethernet.into()); 28 let mut dns_manager = http_proxy::DnsManager::new(); 29 loop { 30 match pcap::read_record(&mut reader).await { 31 Ok((_hdr, record)) => { 32 dns_manager.add_from_ethernet_slice(&record); 33 } 34 Err(e) if e.kind() == std::io::ErrorKind::UnexpectedEof => { 35 break; 36 } 37 Err(e) => { 38 println!("Error: {:?}", e); 39 assert!(false); 40 } 41 } 42 } 43 } 44 main()45fn main() { 46 let iterations = 50_000; 47 let rt = Runtime::new().unwrap(); 48 let handle = rt.handle(); 49 for _ in 0..5 { 50 let time_start = Instant::now(); 51 for _ in 0..iterations { 52 handle.block_on(dns_benchmark()); 53 } 54 let elapsed_time = time_start.elapsed(); 55 println!( 56 "** Time per iteration {}us", 57 (elapsed_time.as_micros() as f64) / (iterations as f64) 58 ); 59 } 60 } 61