Function encode_v2 

pub fn encode_v2(
    command: ProxyCommand,
    source: Option<SocketAddr>,
    destination: Option<SocketAddr>,
    tlvs: &[Tlv<'_>],
    with_crc: bool,
    out: &mut [u8],
) -> Result<usize, ProxyError>

Available on crate feature proxy only.

Writes a v2 header; returns its length. None for either address sends UNSPEC, which is what ProxyCommand::Local means. with_crc adds a CRC32C TLV.

use net_io::{ProxyCommand, ProxyParser, ProxyProgress, ProxyVersions};
let mut out = [0u8; 64];
let n = net_io::encode_v2(
    ProxyCommand::Proxy,
    Some("192.0.2.1:5000".parse().unwrap()),
    Some("192.0.2.2:80".parse().unwrap()),
    &[],
    true,
    &mut out,
)?;
assert!(n > 16);

Errors

FamilyMismatch, OutputTooSmall, V2LengthTooLarge when it cannot fit 65,535 bytes.