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//! Declare the TargetPort type.
use serde::{Deserialize, Serialize};
use std::fmt;
/// A port that we want to connect to as a client.
///
/// Ordinarily, this is a TCP port, plus a flag to indicate whether we
/// must support IPv4 or IPv6.
#[derive(
Clone, Copy, Debug, Deserialize, Eq, PartialEq, Hash, PartialOrd, Ord, Serialize, Default,
)]
#[non_exhaustive]
pub struct TargetPort {
/// True if this is a request to connect to an IPv6 address
pub ipv6: bool,
/// The port that the client wants to connect to
pub port: u16,
}
impl TargetPort {
/// Create a request to make sure that a circuit supports a given
/// ipv4 exit port.
pub fn ipv4(port: u16) -> TargetPort {
TargetPort { ipv6: false, port }
/// ipv6 exit port.
pub fn ipv6(port: u16) -> TargetPort {
TargetPort { ipv6: true, port }
/// Return true if this port is supported by the provided Relay.
pub fn is_supported_by(&self, r: &tor_netdir::details::RelayDetails<'_>) -> bool {
if self.ipv6 {
r.supports_exit_port_ipv6(self.port)
} else {
r.supports_exit_port_ipv4(self.port)
impl fmt::Display for TargetPort {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{}{}", self.port, if self.ipv6 { "v6" } else { "v4" })