You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: getsess.rs
    path of file: ./repos/geph4-client/src/connect/tunnel
    
    the code of the file until where you have to start completion: use bytes::Bytes;
use ed25519_dalek::ed25519::signature::Signature;
use ed25519_dalek::{PublicKey, Verifier};
use futures_in
    
async fn connect_udp(desc: BridgeDescriptor, meta: String) -> anyhow::Result<ObfsUdpPipe> {
    let cookie: ObfsUdpPublic =
        bincode::deserialize(&desc.cookie).context("cannot decode pipe cookie")?;
    ObfsUdpPipe::connect(desc.endpoint, cookie, &meta)
        .timeout(Duration::from_secs(30))
        .await
        .context("pipe connection timeout")?
}