netstat2 0.9.1

netstat2
=======
[![Latest version](https://img.shields.io/crates/v/netstat2.svg)](https://crates.io/crates/netstat2)
[![Documentation](https://docs.rs/netstat2/badge.svg)](https://docs.rs/netstat2)
![License](https://img.shields.io/crates/l/netstat2.svg)

Cross-platform library to retrieve network sockets information.
Aims to be optimal by using low-level OS APIs instead of command line utilities.
Provides unified interface and returns data structures which may have additional fields depending on platform.

```toml
# Cargo.toml
[dependencies]
netstat2 = "0.9"
```

This is a fork based on the [netstat](https://crates.io/crates/netstat) crate by [ivxvm](https://github.com/ivxvm).

## Example

```rust
use netstat2::{get_sockets_info, AddressFamilyFlags, ProtocolFlags, ProtocolSocketInfo};

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let af_flags = AddressFamilyFlags::IPV4 | AddressFamilyFlags::IPV6;
    let proto_flags = ProtocolFlags::TCP | ProtocolFlags::UDP;
    let sockets_info = get_sockets_info(af_flags, proto_flags)?;
    
    for si in sockets_info {
        match si.protocol_socket_info {
            ProtocolSocketInfo::Tcp(tcp_si) => println!(
                "TCP {}:{} -> {}:{} {:?} - {}",
                tcp_si.local_addr,
                tcp_si.local_port,
                tcp_si.remote_addr,
                tcp_si.remote_port,
                si.associated_pids,
                tcp_si.state
            ),
            ProtocolSocketInfo::Udp(udp_si) => println!(
                "UDP {}:{} -> *:* {:?}",
                udp_si.local_addr, udp_si.local_port, si.associated_pids
            ),
        }
    }

    Ok(())
}
```

## Details

- On Windows, this library library uses [GetExtendedTcpTable](https://docs.microsoft.com/en-us/windows/desktop/api/iphlpapi/nf-iphlpapi-getextendedtcptable) & [GetExtendedUdpTable](https://docs.microsoft.com/en-us/windows/desktop/api/iphlpapi/nf-iphlpapi-getextendedudptable) (iphlpapi), 
with an option to use the older [GetTcpTable](https://docs.microsoft.com/en-us/windows/desktop/api/iphlpapi/nf-iphlpapi-gettcptable) & [GeUdpTable](https://docs.microsoft.com/en-us/windows/desktop/api/iphlpapi/nf-iphlpapi-getudptable).
- On Linux and Android, it uses [NETLINK_INET_DIAG](http://manpages.ubuntu.com/manpages/bionic/en/man7/sock_diag.7.html) protocol and performs pid lookup by traversing `procfs`.
- On macOS and iOS, it uses [proc_pidfdinfo](https://opensource.apple.com/source/xnu/xnu-1504.7.4/bsd/kern/proc_info.c.auto.html).

## 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)

## 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.