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Rust crate providing a cross platform interface for interacting with the routing table

Home Page: https://docs.rs/net-route/

Rust 72.24% C 27.76%

linux macos networking routing-table rust windows

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xutianyi1999 matt3o12 adamierymenko arsenron xgzeng aschey lisoboss flier gregor-netdebug dawson-jones hsqstephenzhang vendettareborn

net-route's Issues

The `Handle::add` returns an error on macOs when setting the route to `0.0.0.0/0`

The way of setting routes to make all traffic reach the specified tun interface is suggested to be:

 let if_name = CString::new("utun6")?;
let tun_ifindex = unsafe{
	libc::if_nametoindex(if_name.as_ptr())
};
let handle = Handle::new()?;
let route = Route::new("0.0.0.0".parse().unwrap(), 0).with_ifindex(tun_ifindex);
handle.add(&route).await  // #1

However, #1 just returns an error Err(Custom { kind: AlreadyExists, error: "rtm_errno 17" }). If set the routing with Route::new("20.0.0.0".parse().unwrap(), 24).with_ifindex(tun_ifindex); then it's OK.

In both case, there is a panic at

.cargo/registry/src/index.crates.io-6f17d22bba15001f/net-route-0.2.11/src/platform_impl/macos/macos.rs:254:25:
index out of bounds: the len is 12 but the index is 12
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

IPv6 is broken on macOS

IPv6 LAN-local routes come back with either /0 or /128 prefix and no interface index. I'm investigating to see if I can do a PR.

Make the routing table recoverable after the program exits with exceptions

I found that the routing table cannot be recovered once the program setting the routing table with net-route exits without being correct to call delete API, the only approach is to restart the system. net-route seems can record the original associated setting to disk such that the routing table can be recoverable after the next time the program run.

Doesn't compile on macOS 14.2.1

OS: macOS 14.2.1 (23C71)
CPU: Apple M1

error[E0560]: struct `bind::rt_metrics` has no field named `rmx_state`
   --> /Users/frost/.cargo/registry/src/index.crates.io-6f17d22bba15001f/net-route-0.2.8/src/platform_impl/macos/macos.rs:231:13
    |
231 |             rmx_state: 0,
    |             ^^^^^^^^^ `bind::rt_metrics` does not have this field
    |
    = note: all struct fields are already assigned

error[E0308]: mismatched types
   --> /Users/frost/.cargo/registry/src/index.crates.io-6f17d22bba15001f/net-route-0.2.8/src/platform_impl/macos/macos.rs:232:25
    |
232 |             rmx_filler: [0u32; 3],
    |                         ^^^^^^^^^ expected an array with a fixed size of 4 elements, found one with 3 elements

new rt_metrics struct

struct rt_metrics {
	u_int32_t       rmx_locks;      /* Kernel leaves these values alone */
	u_int32_t       rmx_mtu;        /* MTU for this path */
	u_int32_t       rmx_hopcount;   /* max hops expected */
	int32_t         rmx_expire;     /* lifetime for route, e.g. redirect */
	u_int32_t       rmx_recvpipe;   /* inbound delay-bandwidth product */
	u_int32_t       rmx_sendpipe;   /* outbound delay-bandwidth product */
	u_int32_t       rmx_ssthresh;   /* outbound gateway buffer limit */
	u_int32_t       rmx_rtt;        /* estimated round trip time */
	u_int32_t       rmx_rttvar;     /* estimated rtt variance */
	u_int32_t       rmx_pksent;     /* packets sent using this route */
	u_int32_t       rmx_filler[4];  /* will be used for TCP's peer-MSS cache */
};

Setting route `0.0.0.0/1` makes the `bind_device_by_index_v4` of socket2 unusable

When setting 0.0.0.0/1, almost traffic are routing to tun, and bind_device_by_index_v4 is used to make the socket binding to the specified network interface such that the traffic of the socket does not pass through the routing table. However, it seems not work when using net-route, the approach does work when using tproxy-config.

The error is

called Result::unwrap() on an Err value: Os { code: 51, kind: NetworkUnreachable, message: "Network is unreachable" }

Add methods to `Route` to enable setting ifindex by name & reading interface name via the index

How to route all traffic to a specified tun device by using this library?

How do I achieve this target by using this crate? Honestly, the documentation is lack, I don't know how to do.

recv data would block

use futures::StreamExt;
use net_route::Handle;

#[tokio::main]
async fn main() -> std::io::Result<()> {
    let handle = Handle::new()?;
    let stream = handle.route_listen_stream();

    futures::pin_mut!(stream);

    println!("Listening for route events, press Ctrl+C to cancel...");
    while let Some(value) = stream.next().await {
        println!("{:?}", value);
    }
    Ok(())
}

this is code from examples/listen.rs, It would block when you switch the wifi, this bug is 100% reproducible

Why doesn't macOS directly use rt_msghdr->rtm_index as the interface index?

I'm new to this, but it seems like rt_msghdr->rtm_index in macOS is the interface index
I want to get the actual interface used by each route, just like netstat -nr

I used Go before and it did the same thing https://cs.opensource.google/go/x/net/+/master:route/route_classic.go;drc=d23d9bc549229fd1a9d375dc91141fcf1385d257;l=47

bindings.rs: No such file or directory (os error 2) on macOs

target/debug/build/net-route-02f35d3dceb1c1e4/out/bindings.rs: No such file or directory (os error 2)
  |
5 | include!(concat!(env!("OUT_DIR"), "/bindings.rs"));
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  |
  = note: this error originates in the macro `include` (in Nightly builds, run with -Z macro-backtrace for more info)

johnyburd / net-route Goto Github PK

net-route's People

Contributors

Stargazers

Watchers

Forkers

net-route's Issues

The `Handle::add` returns an error on macOs when setting the route to `0.0.0.0/0`

IPv6 is broken on macOS

Make the routing table recoverable after the program exits with exceptions

Doesn't compile on macOS 14.2.1

Setting route `0.0.0.0/1` makes the `bind_device_by_index_v4` of socket2 unusable

Add methods to `Route` to enable setting ifindex by name & reading interface name via the index

How to route all traffic to a specified tun device by using this library?

recv data would block

Why doesn't macOS directly use rt_msghdr->rtm_index as the interface index?

bindings.rs: No such file or directory (os error 2) on macOs

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