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: tcp_stream.rs
    path of file: ./repos/tunshell/tunshell-client/src/server
    
    the code of the file until where you have to start completion: use crate::Config;
use anyhow::{bail, Context as AnyhowContext, Result};
use std::{time::Duration, net::ToSocketAddrs};
use tokio::{
    io::{AsyncReadExt, AsyncWriteExt},
    net::TcpStream,
};

pub struct TcpServerStream {
    inner: TcpStream
}

impl TcpServerStream {
    pub fn inner(self) -> TcpStream {
        self.inner
    }

    pub async fn connect(config: &Config, port: u16) -> Result<Self> {
        let network_stream = if let Ok(http_proxy) = std::env::var("HTTP_PROXY") {
            log::info!("Connecting to relay server via http proxy {}", http_proxy);

            connect_via_http_proxy(config, port, http_proxy).await?
        } else {
            log::info!("Connecting to relay server over TCP");
            let relay_addr = (conf
    
    pub async fn connect(config: &Config, port: u16) -> Result<Self> {
        let network_stream = if let Ok(http_proxy) = std::env::var("HTTP_PROXY") {
            log::info!("Connecting to relay server via http proxy {}", http_proxy);

            connect_via_http_proxy(config, port, http_proxy).await?
        } else {
            log::info!("Connecting to relay server over TCP");
            let relay_addr = (config.relay_host(), port)
                .to_socket_addrs()?
                .next()
                .unwrap();

            TcpStream::connect(relay_addr).await?
        };

        if let Err(err) = network_stream.set_keepalive(Some(Duration::from_secs(30))) {
            log::warn!("failed to set tcp keepalive: {}", err);
        }

        Ok(Self {
            inner: network_stream,
        })
    }