(stream: &mut TcpStream)
| 48 | mod tls_terminate; |
| 49 | |
| 50 | async fn take_sni(stream: &mut TcpStream) -> Result<(Option<String>, Vec<u8>)> { |
| 51 | let mut buffer = vec![0u8; 4096]; |
| 52 | let mut data_len = 0; |
| 53 | loop { |
| 54 | // read data from stream |
| 55 | let n = stream |
| 56 | .read(&mut buffer[data_len..]) |
| 57 | .await |
| 58 | .context("failed to read from incoming tcp stream")?; |
| 59 | if n == 0 { |
| 60 | break; |
| 61 | } |
| 62 | data_len += n; |
| 63 | |
| 64 | if let Some(sni) = extract_sni(&buffer[..data_len]) { |
| 65 | let sni = String::from_utf8(sni.to_vec()).context("sni: invalid utf-8")?; |
| 66 | debug!("got sni: {sni}"); |
| 67 | buffer.truncate(data_len); |
| 68 | return Ok((Some(sni), buffer)); |
| 69 | } |
| 70 | } |
| 71 | buffer.truncate(data_len); |
| 72 | Ok((None, buffer)) |
| 73 | } |
| 74 | |
| 75 | #[derive(Debug)] |
| 76 | struct DstInfo { |
no test coverage detected