use rquest::tls::Impersonate; #[tokio::main] async fn main() -> Result<(), rquest::Error> { // Build a client to mimic Edge127 let client = rquest::Client::builder() .impersonate(Impersonate::Edge127) .tls_info(true) .build()?; // Use the API you're already familiar with let resp = client.get("https://tls.peet.ws/api/all").send().await?; if let Some(val) = resp.extensions().get::() { if let Some(peer_cert_der) = val.peer_certificate() { assert!(!peer_cert_der.is_empty()); } } Ok(()) }