nrf_modem/
embedded_nal_async.rs

1use crate::DnsQuery;
2
3/// Modem struct implementing [`embedded-nal-async`] traits.
4///
5/// Only available with `feature = "embedded-nal-async"`.
6///
7/// NOTE: Reverse DNS lookups are not supported.
8/// The `get_host_by_address()` function will always report an error.
9#[derive(Copy, Clone, Debug)]
10#[cfg_attr(feature = "defmt", derive(defmt::Format))]
11pub struct ModemNal;
12
13impl embedded_nal_async::Dns for ModemNal {
14    type Error = crate::Error;
15
16    async fn get_host_by_name(
17        &self,
18        hostname: &str,
19        addr_type: embedded_nal_async::AddrType,
20    ) -> Result<core::net::IpAddr, Self::Error> {
21        let query = DnsQuery::new(hostname).with_address_type(addr_type.into());
22        crate::dns::resolve_dns(query).await
23    }
24
25    async fn get_host_by_address(
26        &self,
27        _addr: core::net::IpAddr,
28        _result: &mut [u8],
29    ) -> Result<usize, Self::Error> {
30        Err(crate::Error::ReverseDnsLookupNotSupported)
31    }
32}
33
34impl embedded_nal_async::TcpConnect for ModemNal {
35    type Error = crate::Error;
36
37    type Connection<'a> = crate::TcpStream;
38
39    async fn connect<'a>(
40        &'a self,
41        remote: core::net::SocketAddr,
42    ) -> Result<Self::Connection<'a>, Self::Error> {
43        crate::TcpStream::connect(remote).await
44    }
45}
46
47impl From<embedded_nal_async::AddrType> for crate::dns::AddrType {
48    fn from(value: embedded_nal_async::AddrType) -> Self {
49        match value {
50            embedded_nal_async::AddrType::Either => Self::Any,
51            embedded_nal_async::AddrType::IPv4 => Self::V4,
52            embedded_nal_async::AddrType::IPv6 => Self::V6,
53        }
54    }
55}
nrf_modem/embedded_nal_async.rs

nrf_modem/
embedded_nal_async.rs
