#![cfg_attr(docsrs, feature(doc_auto_cfg, doc_cfg))]

#![doc = include_str!("../README.md")]

// @@ begin lint list maintained by maint/add_warning @@

#![allow(renamed_and_removed_lints)] // @@REMOVE_WHEN(ci_arti_stable)

#![allow(unknown_lints)] // @@REMOVE_WHEN(ci_arti_nightly)

#![warn(missing_docs)]

#![warn(noop_method_call)]

#![warn(unreachable_pub)]

#![warn(clippy::all)]

#![deny(clippy::await_holding_lock)]

#![deny(clippy::cargo_common_metadata)]

#![deny(clippy::cast_lossless)]

#![deny(clippy::checked_conversions)]

#![warn(clippy::cognitive_complexity)]

#![deny(clippy::debug_assert_with_mut_call)]

#![deny(clippy::exhaustive_enums)]

#![deny(clippy::exhaustive_structs)]

#![deny(clippy::expl_impl_clone_on_copy)]

#![deny(clippy::fallible_impl_from)]

#![deny(clippy::implicit_clone)]

#![deny(clippy::large_stack_arrays)]

#![warn(clippy::manual_ok_or)]

#![deny(clippy::missing_docs_in_private_items)]

#![warn(clippy::needless_borrow)]

#![warn(clippy::needless_pass_by_value)]

#![warn(clippy::option_option)]

#![deny(clippy::print_stderr)]

#![deny(clippy::print_stdout)]

#![warn(clippy::rc_buffer)]

#![deny(clippy::ref_option_ref)]

#![warn(clippy::semicolon_if_nothing_returned)]

#![warn(clippy::trait_duplication_in_bounds)]

#![deny(clippy::unchecked_duration_subtraction)]

#![deny(clippy::unnecessary_wraps)]

#![warn(clippy::unseparated_literal_suffix)]

#![deny(clippy::unwrap_used)]

#![deny(clippy::mod_module_files)]

#![allow(clippy::let_unit_value)] // This can reasonably be done for explicitness

#![allow(clippy::uninlined_format_args)]

#![allow(clippy::significant_drop_in_scrutinee)] // arti/-/merge_requests/588/#note_2812945

#![allow(clippy::result_large_err)] // temporary workaround for arti#587

#![allow(clippy::needless_raw_string_hashes)] // complained-about code is fine, often best

#![allow(clippy::needless_lifetimes)] // See arti#1765

//! <!-- @@ end lint list maintained by maint/add_warning @@ -->

// TODO #2010: Remove this global allow, and either propagate it to the functions that need it,

// or make those functions less complex.

#![allow(clippy::cognitive_complexity)]

// TODO #1645 (either remove this, or decide to have it everywhere)

#![cfg_attr(

    not(all(feature = "full", feature = "experimental")),

    allow(unused, unreachable_pub)

)]

#[cfg(feature = "bench")]

pub mod bench_utils;

pub mod channel;

mod congestion;

mod crypto;

pub mod memquota;

pub mod stream;

pub(crate) mod tunnel;

mod util;

pub use util::err::{Error, ResolveError};

pub use util::skew::ClockSkew;

pub use channel::params::ChannelPaddingInstructions;

pub use congestion::params as ccparams;

pub use crypto::cell::{HopNum, HopNumDisplay};

pub use tunnel::circuit;

/// A Result type for this crate.

pub type Result<T> = std::result::Result<T, Error>;

use std::fmt::Debug;

use tor_memquota::{

    mq_queue::{self, ChannelSpec as _},

    HasMemoryCost,

};

use tor_rtcompat::DynTimeProvider;

#[doc(hidden)]

pub use {derive_deftly, tor_memquota};

/// Timestamp object that we update whenever we get incoming traffic.

///

/// Used to implement [`time_since_last_incoming_traffic`]

static LAST_INCOMING_TRAFFIC: util::ts::AtomicOptTimestamp = util::ts::AtomicOptTimestamp::new();

/// Called whenever we receive incoming traffic.

///

/// Used to implement [`time_since_last_incoming_traffic`]

#[inline]

/// Return the amount of time since we last received "incoming traffic".

///

/// This is a global counter, and is subject to interference from

/// other users of the `tor_proto`.  Its only permissible use is for

/// checking how recently we have been definitely able to receive

/// incoming traffic.

///

/// When enabled, this timestamp is updated whenever we receive a valid

/// cell, and whenever we complete a channel handshake.

///

/// Returns `None` if we never received "incoming traffic".

/// Make an MPSC queue, of any type, that participates in memquota, but a fake one for testing

#[cfg(any(test, feature = "testing"))] // Used by Channel::new_fake which is also feature=testing

/// Return a list of the protocols [supported](tor_protover::doc_supported)

/// by this crate, running as a client.

    use tor_protover::named::*;

    // WARNING: REMOVING ELEMENTS FROM THIS LIST CAN BE DANGEROUS!

    // SEE [`tor_protover::doc_changing`]

#[cfg(test)]

mod test {

    // @@ begin test lint list maintained by maint/add_warning @@

    #![allow(clippy::bool_assert_comparison)]

    #![allow(clippy::clone_on_copy)]

    #![allow(clippy::dbg_macro)]

    #![allow(clippy::mixed_attributes_style)]

    #![allow(clippy::print_stderr)]

    #![allow(clippy::print_stdout)]

    #![allow(clippy::single_char_pattern)]

    #![allow(clippy::unwrap_used)]

    #![allow(clippy::unchecked_duration_subtraction)]

    #![allow(clippy::useless_vec)]

    #![allow(clippy::needless_pass_by_value)]

    //! <!-- @@ end test lint list maintained by maint/add_warning @@ -->

    use super::*;

    #[test]

    fn protocols() {

        let pr = supported_client_protocols();

        let expected = "FlowCtrl=1 Link=4-5 LinkAuth=3 Relay=2-4".parse().unwrap();

        assert_eq!(pr, expected);

    }

}