Function deltachat::net::connect_tcp_inner

pub(crate) async fn connect_tcp_inner(
    addr: SocketAddr,
) -> Result<Pin<Box<TimeoutStream<TcpStream>>>>

Returns a TCP connection stream with read/write timeouts set and Nagle’s algorithm disabled with TCP_NODELAY.

TCP_NODELAY ensures writing to the stream always results in immediate sending of the packet to the network, which is important to reduce the latency of interactive protocols such as IMAP.