diff options
author | David Barsky <me@davidbarsky.com> | 2019-12-21 11:30:00 -0500 |
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committer | Carl Lerche <me@carllerche.com> | 2019-12-21 08:30:00 -0800 |
commit | de5ec6e1bcbb428ee672d7965c0656e628adde46 (patch) | |
tree | 7b3ed0002fb0f2a332639b4ab8e1584501f6c115 /tokio/tests/net_lookup_host.rs | |
parent | 3dcd76a38feff3188e1a94f39c4f5feaaa5bdf61 (diff) |
dns: provide `lookup_host` function (#1870)
`ToSocketAddrs` is a sealed trait pending changes in Rust that will allow
defining async trait fns. Until then, `net::lookup_host` is provided as a way
to convert a `T: ToSocketAddrs` into `SocketAddr`s.
Diffstat (limited to 'tokio/tests/net_lookup_host.rs')
-rw-r--r-- | tokio/tests/net_lookup_host.rs | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/tokio/tests/net_lookup_host.rs b/tokio/tests/net_lookup_host.rs new file mode 100644 index 00000000..4d064029 --- /dev/null +++ b/tokio/tests/net_lookup_host.rs @@ -0,0 +1,36 @@ +use tokio::net; +use tokio_test::assert_ok; + +use std::io; +use std::net::{IpAddr, Ipv4Addr, Ipv6Addr, SocketAddr}; + +#[tokio::test] +async fn lookup_socket_addr() { + let addr: SocketAddr = "127.0.0.1:8000".parse().unwrap(); + + let actual = assert_ok!(net::lookup_host(addr).await).collect::<Vec<_>>(); + assert_eq!(vec![addr], actual); +} + +#[tokio::test] +async fn lookup_str_socket_addr() { + let addr: SocketAddr = "127.0.0.1:8000".parse().unwrap(); + + let actual = assert_ok!(net::lookup_host("127.0.0.1:8000").await).collect::<Vec<_>>(); + assert_eq!(vec![addr], actual); +} + +#[tokio::test] +async fn resolve_dns() -> io::Result<()> { + let mut hosts = net::lookup_host("localhost:3000").await?; + let host = hosts.next().unwrap(); + + let expected = if host.is_ipv4() { + SocketAddr::new(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 3000) + } else { + SocketAddr::new(IpAddr::V6(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1)), 3000) + }; + assert_eq!(host, expected); + + Ok(()) +} |