mirror of https://github.com/smol-rs/nb-connect
Initial commit
This commit is contained in:
commit
a7d9f52d18
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@ -0,0 +1 @@
|
|||
github: stjepang
|
|
@ -0,0 +1,51 @@
|
|||
name: Build and test
|
||||
|
||||
on:
|
||||
push:
|
||||
branches:
|
||||
- master
|
||||
pull_request:
|
||||
|
||||
jobs:
|
||||
build_and_test:
|
||||
runs-on: ${{ matrix.os }}
|
||||
strategy:
|
||||
fail-fast: false
|
||||
matrix:
|
||||
os: [ubuntu-latest]
|
||||
rust: [nightly, beta, stable]
|
||||
steps:
|
||||
- uses: actions/checkout@v2
|
||||
|
||||
- name: Set current week of the year in environnement
|
||||
if: startsWith(matrix.os, 'ubuntu') || startsWith(matrix.os, 'macOS')
|
||||
run: echo "::set-env name=CURRENT_WEEK::$(date +%V)"
|
||||
|
||||
- name: Set current week of the year in environnement
|
||||
if: startsWith(matrix.os, 'windows')
|
||||
run: echo "::set-env name=CURRENT_WEEK::$(Get-Date -UFormat %V)"
|
||||
|
||||
- name: Install latest ${{ matrix.rust }}
|
||||
uses: actions-rs/toolchain@v1
|
||||
with:
|
||||
toolchain: ${{ matrix.rust }}
|
||||
profile: minimal
|
||||
override: true
|
||||
|
||||
- name: Run cargo check
|
||||
uses: actions-rs/cargo@v1
|
||||
with:
|
||||
command: check
|
||||
args: --all --bins --examples --tests --all-features
|
||||
|
||||
- name: Run cargo check (without dev-dependencies to catch missing feature flags)
|
||||
if: startsWith(matrix.rust, 'nightly')
|
||||
uses: actions-rs/cargo@v1
|
||||
with:
|
||||
command: check
|
||||
args: -Z features=dev_dep
|
||||
|
||||
- name: Run cargo test
|
||||
uses: actions-rs/cargo@v1
|
||||
with:
|
||||
command: test
|
|
@ -0,0 +1,26 @@
|
|||
name: Lint
|
||||
|
||||
on:
|
||||
push:
|
||||
branches:
|
||||
- master
|
||||
pull_request:
|
||||
|
||||
jobs:
|
||||
clippy:
|
||||
runs-on: ubuntu-latest
|
||||
steps:
|
||||
- uses: actions/checkout@v2
|
||||
|
||||
- name: Set current week of the year in environnement
|
||||
run: echo "::set-env name=CURRENT_WEEK::$(date +%V)"
|
||||
|
||||
- uses: actions-rs/toolchain@v1
|
||||
with:
|
||||
toolchain: stable
|
||||
profile: minimal
|
||||
components: clippy
|
||||
- uses: actions-rs/clippy-check@v1
|
||||
with:
|
||||
token: ${{ secrets.GITHUB_TOKEN }}
|
||||
args: --all-features -- -W clippy::all
|
|
@ -0,0 +1,20 @@
|
|||
name: Security audit
|
||||
|
||||
on:
|
||||
push:
|
||||
branches:
|
||||
- master
|
||||
pull_request:
|
||||
|
||||
jobs:
|
||||
security_audit:
|
||||
runs-on: ubuntu-latest
|
||||
steps:
|
||||
- uses: actions/checkout@v2
|
||||
|
||||
- name: Set current week of the year in environnement
|
||||
run: echo "::set-env name=CURRENT_WEEK::$(date +%V)"
|
||||
|
||||
- uses: actions-rs/audit-check@v1
|
||||
with:
|
||||
token: ${{ secrets.GITHUB_TOKEN }}
|
|
@ -0,0 +1,2 @@
|
|||
/target
|
||||
Cargo.lock
|
|
@ -0,0 +1,3 @@
|
|||
# Version 1.0.0
|
||||
|
||||
- Initial version
|
|
@ -0,0 +1,25 @@
|
|||
[package]
|
||||
name = "nb-connect"
|
||||
version = "1.0.0"
|
||||
authors = [
|
||||
"Stjepan Glavina <stjepang@gmail.com>",
|
||||
"Jayce Fayne <jayce.fayne@mailbox.org>",
|
||||
]
|
||||
edition = "2018"
|
||||
description = "Non-blocking TCP or Unix connect"
|
||||
license = "Apache-2.0 OR MIT"
|
||||
repository = "https://github.com/stjepang/nb-connect"
|
||||
homepage = "https://github.com/stjepang/nb-connect"
|
||||
documentation = "https://docs.rs/nb-connect"
|
||||
keywords = ["TcpStream", "UnixStream", "socket2", "polling"]
|
||||
categories = ["asynchronous", "network-programming", "os"]
|
||||
readme = "README.md"
|
||||
|
||||
[target."cfg(unix)".dependencies]
|
||||
libc = "0.2.77"
|
||||
|
||||
[target.'cfg(windows)'.dependencies]
|
||||
winapi = { version = "0.3.9", features = ["handleapi", "ws2tcpip"] }
|
||||
|
||||
[dev-dependencies]
|
||||
polling = "1.0.2"
|
|
@ -0,0 +1,201 @@
|
|||
Apache License
|
||||
Version 2.0, January 2004
|
||||
http://www.apache.org/licenses/
|
||||
|
||||
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
|
||||
|
||||
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Permission is hereby granted, free of charge, to any
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|
|
@ -0,0 +1,57 @@
|
|||
# nb-connect
|
||||
|
||||
[![Build](https://github.com/stjepang/nb-connect/workflows/Build%20and%20test/badge.svg)](
|
||||
https://github.com/stjepang/nb-connect/actions)
|
||||
[![License](https://img.shields.io/badge/license-MIT%2FApache--2.0-blue.svg)](
|
||||
https://github.com/stjepang/nb-connect)
|
||||
[![Cargo](https://img.shields.io/crates/v/nb-connect.svg)](
|
||||
https://crates.io/crates/nb-connect)
|
||||
[![Documentation](https://docs.rs/nb-connect/badge.svg)](
|
||||
https://docs.rs/nb-connect)
|
||||
|
||||
Non-blocking TCP or Unix connect.
|
||||
|
||||
This crate allows you to create a [`TcpStream`] or a [`UnixStream`] in a non-blocking way,
|
||||
without waiting for the connection to become fully established.
|
||||
|
||||
[`TcpStream`]: https://doc.rust-lang.org/stable/std/net/struct.TcpStream.html
|
||||
[`UnixStream`]: https://doc.rust-lang.org/stable/std/os/unix/net/struct.UnixStream.html
|
||||
|
||||
## Examples
|
||||
|
||||
```rust
|
||||
use polling::{Event, Poller};
|
||||
use std::time::Duration;
|
||||
|
||||
// Create a pending TCP connection.
|
||||
let stream = nb_connect::tcp(([127, 0, 0, 1], 80))?;
|
||||
|
||||
// Create a poller that waits for the stream to become writable.
|
||||
let poller = Poller::new()?;
|
||||
poller.insert(&stream);
|
||||
poller.interest(&stream, Event::writable(0))?;
|
||||
|
||||
// Wait for at most 1 second.
|
||||
if poller.wait(&mut Vec::new(), Some(Duration::from_secs(1)))? == 0 {
|
||||
println!("timeout");
|
||||
} else if let Some(err) = stream.take_error()? {
|
||||
println!("error: {}", err);
|
||||
} else {
|
||||
println!("connected");
|
||||
}
|
||||
```
|
||||
|
||||
## License
|
||||
|
||||
Licensed under either of
|
||||
|
||||
* Apache License, Version 2.0 ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
|
||||
* MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
|
||||
|
||||
at your option.
|
||||
|
||||
#### Contribution
|
||||
|
||||
Unless you explicitly state otherwise, any contribution intentionally submitted
|
||||
for inclusion in the work by you, as defined in the Apache-2.0 license, shall be
|
||||
dual licensed as above, without any additional terms or conditions.
|
|
@ -0,0 +1,338 @@
|
|||
//! Non-blocking TCP or Unix connect.
|
||||
//!
|
||||
//! This crate allows you to create a [`TcpStream`] or a [`UnixStream`] in a non-blocking way,
|
||||
//! without waiting for the connection to become fully established.
|
||||
//!
|
||||
//! [`TcpStream`]: https://doc.rust-lang.org/stable/std/net/struct.TcpStream.html
|
||||
//! [`UnixStream`]: https://doc.rust-lang.org/stable/std/os/unix/net/struct.UnixStream.html
|
||||
//!
|
||||
//! # Examples
|
||||
//!
|
||||
//! ```
|
||||
//! use polling::{Event, Poller};
|
||||
//! use std::time::Duration;
|
||||
//!
|
||||
//! // Create a pending TCP connection.
|
||||
//! let stream = nb_connect::tcp(([127, 0, 0, 1], 80))?;
|
||||
//!
|
||||
//! // Create a poller that waits for the stream to become writable.
|
||||
//! let poller = Poller::new()?;
|
||||
//! poller.insert(&stream);
|
||||
//! poller.interest(&stream, Event::writable(0))?;
|
||||
//!
|
||||
//! // Wait for at most 1 second.
|
||||
//! if poller.wait(&mut Vec::new(), Some(Duration::from_secs(1)))? == 0 {
|
||||
//! println!("timeout");
|
||||
//! } else if let Some(err) = stream.take_error()? {
|
||||
//! println!("error: {}", err);
|
||||
//! } else {
|
||||
//! println!("connected");
|
||||
//! }
|
||||
//! # std::io::Result::Ok(())
|
||||
//! ```
|
||||
|
||||
#![warn(missing_docs, missing_debug_implementations, rust_2018_idioms)]
|
||||
|
||||
use std::io;
|
||||
use std::mem::{self, MaybeUninit};
|
||||
use std::net::{SocketAddr, TcpStream};
|
||||
use std::ptr;
|
||||
|
||||
#[cfg(unix)]
|
||||
use {
|
||||
libc::{sockaddr, sockaddr_storage, socklen_t},
|
||||
std::os::unix::net::UnixStream,
|
||||
std::os::unix::prelude::{FromRawFd, RawFd},
|
||||
std::path::Path,
|
||||
};
|
||||
|
||||
#[cfg(windows)]
|
||||
use {
|
||||
std::os::windows::io::FromRawSocket,
|
||||
winapi::shared::ws2def::{SOCKADDR as sockaddr, SOCKADDR_STORAGE as sockaddr_storage},
|
||||
winapi::um::ws2tcpip::socklen_t,
|
||||
};
|
||||
|
||||
/// A raw socket address.
|
||||
struct Addr {
|
||||
storage: sockaddr_storage,
|
||||
len: socklen_t,
|
||||
}
|
||||
|
||||
impl Addr {
|
||||
/// Creates a raw socket address from `SocketAddr`.
|
||||
fn new(addr: SocketAddr) -> Self {
|
||||
let (addr, len): (*const sockaddr, socklen_t) = match &addr {
|
||||
SocketAddr::V4(addr) => (addr as *const _ as *const _, mem::size_of_val(addr) as _),
|
||||
SocketAddr::V6(addr) => (addr as *const _ as *const _, mem::size_of_val(addr) as _),
|
||||
};
|
||||
unsafe { Self::from_raw_parts(addr, len) }
|
||||
}
|
||||
|
||||
/// Creates an `Addr` from its raw parts.
|
||||
unsafe fn from_raw_parts(addr: *const sockaddr, len: socklen_t) -> Self {
|
||||
let mut storage = MaybeUninit::<sockaddr_storage>::uninit();
|
||||
ptr::copy_nonoverlapping(
|
||||
addr as *const _ as *const u8,
|
||||
&mut storage as *mut _ as *mut u8,
|
||||
len as usize,
|
||||
);
|
||||
Self {
|
||||
storage: storage.assume_init(),
|
||||
len,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(unix)]
|
||||
fn connect(addr: Addr, family: libc::c_int, protocol: libc::c_int) -> io::Result<RawFd> {
|
||||
/// Calls a libc function and results in `io::Result`.
|
||||
macro_rules! syscall {
|
||||
($fn:ident $args:tt) => {{
|
||||
let res = unsafe { libc::$fn $args };
|
||||
if res == -1 {
|
||||
Err(std::io::Error::last_os_error())
|
||||
} else {
|
||||
Ok(res)
|
||||
}
|
||||
}};
|
||||
}
|
||||
|
||||
// On linux, we pass the `SOCK_CLOEXEC` flag to atomically create the socket and set it as
|
||||
// CLOEXEC.
|
||||
#[cfg(target_os = "linux")]
|
||||
let fd = syscall!(socket(
|
||||
family,
|
||||
libc::SOCK_STREAM | libc::SOCK_CLOEXEC,
|
||||
protocol
|
||||
))?;
|
||||
|
||||
// On other systems, we first create the socket and then set it as CLOEXEC.
|
||||
#[cfg(not(target_os = "linux"))]
|
||||
let fd = {
|
||||
let fd = syscall!(socket(family, libc::SOCK_STREAM, protocol))?;
|
||||
let flags = syscall!(fcntl(fd, libc::F_GETFD))? | libc::FD_CLOEXEC;
|
||||
syscall!(fcntl(fd, libc::F_SETFD, flags))?;
|
||||
|
||||
#[cfg(any(target_os = "macos", target_os = "ios"))]
|
||||
{
|
||||
let payload = &1i32 as *const i32 as *const libc::c_void;
|
||||
syscall!(setsockopt(
|
||||
fd,
|
||||
libc::SOL_SOCKET,
|
||||
libc::SO_NOSIGPIPE,
|
||||
payload,
|
||||
std::mem::size_of::<i32>() as libc::socklen_t,
|
||||
))?;
|
||||
}
|
||||
fd
|
||||
};
|
||||
|
||||
// Put socket into non-blocking mode.
|
||||
let flags = syscall!(fcntl(fd, libc::F_GETFL))? | libc::O_NONBLOCK;
|
||||
syscall!(fcntl(fd, libc::F_SETFL, flags))?;
|
||||
|
||||
// Start connecting.
|
||||
match syscall!(connect(fd, &addr.storage as *const _ as *const _, addr.len)) {
|
||||
Ok(_) => {}
|
||||
Err(err) if err.raw_os_error() == Some(libc::EINPROGRESS) => {}
|
||||
Err(err) if err.kind() == io::ErrorKind::WouldBlock => {}
|
||||
Err(err) => return Err(err),
|
||||
}
|
||||
|
||||
Ok(fd)
|
||||
}
|
||||
|
||||
/// Creates a pending Unix connection to the specified path.
|
||||
///
|
||||
/// The returned Unix stream will be in non-blocking mode and in the process of connecting to the
|
||||
/// specified path.
|
||||
///
|
||||
/// The stream becomes writable when connected.
|
||||
///
|
||||
/// # Examples
|
||||
///
|
||||
/// ```no_run
|
||||
/// use polling::{Event, Poller};
|
||||
/// use std::time::Duration;
|
||||
///
|
||||
/// // Create a pending Unix connection.
|
||||
/// let stream = nb_connect::unix("/tmp/socket")?;
|
||||
///
|
||||
/// // Create a poller that waits for the stream to become writable.
|
||||
/// let poller = Poller::new()?;
|
||||
/// poller.insert(&stream);
|
||||
/// poller.interest(&stream, Event::writable(0))?;
|
||||
///
|
||||
/// // Wait for at most 1 second.
|
||||
/// if poller.wait(&mut Vec::new(), Some(Duration::from_secs(1)))? == 0 {
|
||||
/// println!("timeout");
|
||||
/// } else {
|
||||
/// println!("connected");
|
||||
/// }
|
||||
/// # std::io::Result::Ok(())
|
||||
/// ```
|
||||
#[cfg(unix)]
|
||||
pub fn unix<P: AsRef<Path>>(path: P) -> io::Result<UnixStream> {
|
||||
use std::cmp::Ordering;
|
||||
use std::os::unix::ffi::OsStrExt;
|
||||
|
||||
let addr = unsafe {
|
||||
let mut addr = mem::zeroed::<libc::sockaddr_un>();
|
||||
addr.sun_family = libc::AF_UNIX as libc::sa_family_t;
|
||||
|
||||
let bytes = path.as_ref().as_os_str().as_bytes();
|
||||
|
||||
match (bytes.get(0), bytes.len().cmp(&addr.sun_path.len())) {
|
||||
// Abstract paths don't need a null terminator
|
||||
(Some(&0), Ordering::Greater) => {
|
||||
return Err(io::Error::new(
|
||||
io::ErrorKind::InvalidInput,
|
||||
"path must be no longer than SUN_LEN",
|
||||
));
|
||||
}
|
||||
(Some(&0), _) => {}
|
||||
(_, Ordering::Greater) | (_, Ordering::Equal) => {
|
||||
return Err(io::Error::new(
|
||||
io::ErrorKind::InvalidInput,
|
||||
"path must be shorter than SUN_LEN",
|
||||
));
|
||||
}
|
||||
_ => {}
|
||||
}
|
||||
|
||||
for (dst, src) in addr.sun_path.iter_mut().zip(bytes) {
|
||||
*dst = *src as libc::c_char;
|
||||
}
|
||||
// null byte for pathname is already there since we zeroed up front
|
||||
|
||||
let base = &addr as *const _ as usize;
|
||||
let path = &addr.sun_path as *const _ as usize;
|
||||
let sun_path_offset = path - base;
|
||||
|
||||
let mut len = sun_path_offset + bytes.len();
|
||||
match bytes.get(0) {
|
||||
Some(&0) | None => {}
|
||||
Some(_) => len += 1,
|
||||
}
|
||||
Addr::from_raw_parts(&addr as *const _ as *const _, len as libc::socklen_t)
|
||||
};
|
||||
|
||||
let fd = connect(addr, libc::AF_UNIX, 0)?;
|
||||
unsafe { Ok(UnixStream::from_raw_fd(fd)) }
|
||||
}
|
||||
|
||||
/// Creates a pending TCP connection to the specified address.
|
||||
///
|
||||
/// The returned TCP stream will be in non-blocking mode and in the process of connecting to the
|
||||
/// specified address.
|
||||
///
|
||||
/// The stream becomes writable when connected.
|
||||
///
|
||||
/// # Examples
|
||||
///
|
||||
/// ```
|
||||
/// use polling::{Event, Poller};
|
||||
/// use std::time::Duration;
|
||||
///
|
||||
/// // Create a pending TCP connection.
|
||||
/// let stream = nb_connect::tcp(([127, 0, 0, 1], 80))?;
|
||||
///
|
||||
/// // Create a poller that waits for the stream to become writable.
|
||||
/// let poller = Poller::new()?;
|
||||
/// poller.insert(&stream);
|
||||
/// poller.interest(&stream, Event::writable(0))?;
|
||||
///
|
||||
/// // Wait for at most 1 second.
|
||||
/// if poller.wait(&mut Vec::new(), Some(Duration::from_secs(1)))? == 0 {
|
||||
/// println!("timeout");
|
||||
/// } else if let Some(err) = stream.take_error()? {
|
||||
/// println!("error: {}", err);
|
||||
/// } else {
|
||||
/// println!("connected");
|
||||
/// }
|
||||
/// # std::io::Result::Ok(())
|
||||
/// ```
|
||||
pub fn tcp<A: Into<SocketAddr>>(addr: A) -> io::Result<TcpStream> {
|
||||
tcp_connect(addr.into())
|
||||
}
|
||||
|
||||
#[cfg(unix)]
|
||||
fn tcp_connect(addr: SocketAddr) -> io::Result<TcpStream> {
|
||||
let addr = addr.into();
|
||||
let fd = connect(
|
||||
Addr::new(addr),
|
||||
if addr.is_ipv6() {
|
||||
libc::AF_INET6
|
||||
} else {
|
||||
libc::AF_INET
|
||||
},
|
||||
libc::IPPROTO_TCP,
|
||||
)?;
|
||||
unsafe { Ok(TcpStream::from_raw_fd(fd)) }
|
||||
}
|
||||
|
||||
#[cfg(windows)]
|
||||
fn tcp_connect(addr: SocketAddr) -> io::Result<TcpStream> {
|
||||
use std::net::UdpSocket;
|
||||
use std::sync::Once;
|
||||
|
||||
use winapi::ctypes::{c_int, c_ulong};
|
||||
use winapi::shared::minwindef::DWORD;
|
||||
use winapi::shared::ntdef::HANDLE;
|
||||
use winapi::shared::ws2def::{AF_INET, AF_INET6, IPPROTO_TCP, SOCK_STREAM};
|
||||
use winapi::um::handleapi::SetHandleInformation;
|
||||
use winapi::um::winsock2 as sock;
|
||||
|
||||
static INIT: Once = Once::new();
|
||||
INIT.call_once(|| {
|
||||
// Initialize winsock through the standard library by just creating a dummy socket.
|
||||
// Whether this is successful or not we drop the result as libstd will be sure to have
|
||||
// initialized winsock.
|
||||
let _ = UdpSocket::bind("127.0.0.1:34254");
|
||||
});
|
||||
|
||||
const HANDLE_FLAG_INHERIT: DWORD = 0x00000001;
|
||||
const WSA_FLAG_OVERLAPPED: DWORD = 0x01;
|
||||
|
||||
let family = if addr.is_ipv6() { AF_INET6 } else { AF_INET };
|
||||
let addr = Addr::new(addr);
|
||||
|
||||
unsafe {
|
||||
let socket = match sock::WSASocketW(
|
||||
family,
|
||||
SOCK_STREAM,
|
||||
IPPROTO_TCP as _,
|
||||
ptr::null_mut(),
|
||||
0,
|
||||
WSA_FLAG_OVERLAPPED,
|
||||
) {
|
||||
sock::INVALID_SOCKET => {
|
||||
return Err(io::Error::from_raw_os_error(sock::WSAGetLastError()))
|
||||
}
|
||||
socket => socket,
|
||||
};
|
||||
|
||||
// Set no inherit.
|
||||
if SetHandleInformation(socket as HANDLE, HANDLE_FLAG_INHERIT, 0) == 0 {
|
||||
return Err(io::Error::last_os_error());
|
||||
}
|
||||
|
||||
// Put socket into nonblocking mode.
|
||||
let mut nonblocking = true as c_ulong;
|
||||
if sock::ioctlsocket(socket, sock::FIONBIO as c_int, &mut nonblocking) != 0 {
|
||||
return Err(io::Error::last_os_error());
|
||||
}
|
||||
|
||||
// Start connecting.
|
||||
match sock::connect(socket, &addr.storage as *const _ as *const _, addr.len) {
|
||||
0 => {}
|
||||
_ => match io::Error::from_raw_os_error(sock::WSAGetLastError()) {
|
||||
err if err.kind() == io::ErrorKind::WouldBlock => {}
|
||||
err => return Err(err),
|
||||
},
|
||||
}
|
||||
|
||||
Ok(TcpStream::from_raw_socket(socket as _))
|
||||
}
|
||||
}
|
Loading…
Reference in New Issue