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https://github.com/denoland/deno.git
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10e4b2e140
Yearly tradition of creating extra noise in git.
156 lines
3.8 KiB
Rust
156 lines
3.8 KiB
Rust
// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
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use deno_core::error::AnyError;
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use std::net::SocketAddr;
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use std::net::ToSocketAddrs;
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use tokio::net::lookup_host;
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/// Resolve network address *asynchronously*.
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pub async fn resolve_addr(
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hostname: &str,
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port: u16,
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) -> Result<impl Iterator<Item = SocketAddr> + '_, AnyError> {
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let addr_port_pair = make_addr_port_pair(hostname, port);
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let result = lookup_host(addr_port_pair).await?;
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Ok(result)
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}
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/// Resolve network address *synchronously*.
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pub fn resolve_addr_sync(
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hostname: &str,
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port: u16,
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) -> Result<impl Iterator<Item = SocketAddr>, AnyError> {
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let addr_port_pair = make_addr_port_pair(hostname, port);
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let result = addr_port_pair.to_socket_addrs()?;
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Ok(result)
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}
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fn make_addr_port_pair(hostname: &str, port: u16) -> (&str, u16) {
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// Default to localhost if given just the port. Example: ":80"
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if hostname.is_empty() {
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return ("0.0.0.0", port);
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}
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// If this looks like an ipv6 IP address. Example: "[2001:db8::1]"
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// Then we remove the brackets.
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let addr = hostname.trim_start_matches('[').trim_end_matches(']');
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(addr, port)
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use std::net::Ipv4Addr;
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use std::net::Ipv6Addr;
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use std::net::SocketAddrV4;
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use std::net::SocketAddrV6;
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#[tokio::test]
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async fn resolve_addr1() {
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let expected = vec![SocketAddr::V4(SocketAddrV4::new(
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Ipv4Addr::new(127, 0, 0, 1),
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80,
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))];
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let actual = resolve_addr("127.0.0.1", 80)
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.await
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.unwrap()
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.collect::<Vec<_>>();
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assert_eq!(actual, expected);
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}
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#[tokio::test]
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async fn resolve_addr2() {
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let expected = vec![SocketAddr::V4(SocketAddrV4::new(
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Ipv4Addr::new(0, 0, 0, 0),
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80,
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))];
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let actual = resolve_addr("", 80).await.unwrap().collect::<Vec<_>>();
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assert_eq!(actual, expected);
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}
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#[tokio::test]
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async fn resolve_addr3() {
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let expected = vec![SocketAddr::V4(SocketAddrV4::new(
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Ipv4Addr::new(192, 0, 2, 1),
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25,
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))];
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let actual = resolve_addr("192.0.2.1", 25)
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.await
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.unwrap()
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.collect::<Vec<_>>();
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assert_eq!(actual, expected);
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}
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#[tokio::test]
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async fn resolve_addr_ipv6() {
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let expected = vec![SocketAddr::V6(SocketAddrV6::new(
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Ipv6Addr::new(0x2001, 0xdb8, 0, 0, 0, 0, 0, 1),
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8080,
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0,
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0,
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))];
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let actual = resolve_addr("[2001:db8::1]", 8080)
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.await
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.unwrap()
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.collect::<Vec<_>>();
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assert_eq!(actual, expected);
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}
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#[tokio::test]
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async fn resolve_addr_err() {
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assert!(resolve_addr("INVALID ADDR", 1234).await.is_err());
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}
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#[test]
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fn resolve_addr_sync1() {
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let expected = vec![SocketAddr::V4(SocketAddrV4::new(
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Ipv4Addr::new(127, 0, 0, 1),
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80,
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))];
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let actual = resolve_addr_sync("127.0.0.1", 80)
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.unwrap()
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.collect::<Vec<_>>();
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assert_eq!(actual, expected);
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}
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#[test]
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fn resolve_addr_sync2() {
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let expected = vec![SocketAddr::V4(SocketAddrV4::new(
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Ipv4Addr::new(0, 0, 0, 0),
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80,
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))];
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let actual = resolve_addr_sync("", 80).unwrap().collect::<Vec<_>>();
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assert_eq!(actual, expected);
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}
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#[test]
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fn resolve_addr_sync3() {
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let expected = vec![SocketAddr::V4(SocketAddrV4::new(
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Ipv4Addr::new(192, 0, 2, 1),
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25,
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))];
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let actual = resolve_addr_sync("192.0.2.1", 25)
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.unwrap()
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.collect::<Vec<_>>();
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assert_eq!(actual, expected);
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}
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#[test]
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fn resolve_addr_sync_ipv6() {
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let expected = vec![SocketAddr::V6(SocketAddrV6::new(
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Ipv6Addr::new(0x2001, 0xdb8, 0, 0, 0, 0, 0, 1),
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8080,
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0,
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0,
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))];
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let actual = resolve_addr_sync("[2001:db8::1]", 8080)
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.unwrap()
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.collect::<Vec<_>>();
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assert_eq!(actual, expected);
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}
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#[test]
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fn resolve_addr_sync_err() {
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assert!(resolve_addr_sync("INVALID ADDR", 1234).is_err());
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}
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}
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