Simpler DNS

Cargo.lock

@@ -20,10 +20,16 @@ dependencies = [
 ]
 
 [[package]]
-name = "autocfg"
+name = "base64"
-version = "1.0.1"
+version = "0.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cdb031dd78e28731d87d56cc8ffef4a8f36ca26c38fe2de700543e627f8a464a"
+checksum = "904dfeac50f3cdaba28fc6f57fdcddb75f49ed61346676a78c4ffe55877802fd"
+
+[[package]]
+name = "bitflags"
+version = "1.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
 [[package]]
 name = "bumpalo"
@@ -31,6 +37,12 @@ version = "3.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a4a45a46ab1f2412e53d3a0ade76ffad2025804294569aae387231a0cd6e0899"
 
+[[package]]
+name = "bytes"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c4872d67bab6358e59559027aa3b9157c53d9358c51423c17554809a8858e0f8"
+
 [[package]]
 name = "cc"
 version = "1.0.72"
@@ -43,31 +55,12 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
-[[package]]
-name = "chrono"
-version = "0.4.19"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "670ad68c9088c2a963aaa298cb369688cf3f9465ce5e2d4ca10e6e0098a1ce73"
-dependencies = [
- "libc",
- "num-integer",
- "num-traits",
- "time",
- "winapi",
-]
-
 [[package]]
 name = "data-encoding"
 version = "2.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3ee2393c4a91429dffb4bedf19f4d6abf27d8a732c8ce4980305d782e5426d57"
 
-[[package]]
-name = "endian-type"
-version = "0.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c34f04666d835ff5d62e058c3995147c06f42fe86ff053337632bca83e42702d"
-
 [[package]]
 name = "enum-as-inner"
 version = "0.3.3"
@@ -159,6 +152,17 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "hostname"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3c731c3e10504cc8ed35cfe2f1db4c9274c3d35fa486e3b31df46f068ef3e867"
+dependencies = [
+ "libc",
+ "match_cfg",
+ "winapi",
+]
+
 [[package]]
 name = "idna"
 version = "0.2.3"
@@ -170,6 +174,27 @@ dependencies = [
  "unicode-normalization",
 ]
 
+[[package]]
+name = "instant"
+version = "0.1.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7a5bbe824c507c5da5956355e86a746d82e0e1464f65d862cc5e71da70e94b2c"
+dependencies = [
+ "cfg-if",
+]
+
+[[package]]
+name = "ipconfig"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f7e2f18aece9709094573a9f24f483c4f65caa4298e2f7ae1b71cc65d853fad7"
+dependencies = [
+ "socket2",
+ "widestring",
+ "winapi",
+ "winreg",
+]
+
 [[package]]
 name = "ipnet"
 version = "2.3.1"
@@ -197,6 +222,21 @@ version = "0.2.112"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1b03d17f364a3a042d5e5d46b053bbbf82c92c9430c592dd4c064dc6ee997125"
 
+[[package]]
+name = "linked-hash-map"
+version = "0.5.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7fb9b38af92608140b86b693604b9ffcc5824240a484d1ecd4795bacb2fe88f3"
+
+[[package]]
+name = "lock_api"
+version = "0.4.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "712a4d093c9976e24e7dbca41db895dabcbac38eb5f4045393d17a95bdfb1109"
+dependencies = [
+ "scopeguard",
+]
+
 [[package]]
 name = "log"
 version = "0.4.14"
@@ -206,12 +246,33 @@ dependencies = [
  "cfg-if",
 ]
 
+[[package]]
+name = "lru-cache"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "31e24f1ad8321ca0e8a1e0ac13f23cb668e6f5466c2c57319f6a5cf1cc8e3b1c"
+dependencies = [
+ "linked-hash-map",
+]
+
+[[package]]
+name = "match_cfg"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ffbee8634e0d45d258acb448e7eaab3fce7a0a467395d4d9f228e3c1f01fb2e4"
+
 [[package]]
 name = "matches"
 version = "0.1.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a3e378b66a060d48947b590737b30a1be76706c8dd7b8ba0f2fe3989c68a853f"
 
+[[package]]
+name = "memchr"
+version = "2.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "308cc39be01b73d0d18f82a0e7b2a3df85245f84af96fdddc5d202d27e47b86a"
+
 [[package]]
 name = "mio"
 version = "0.7.14"
@@ -239,18 +300,9 @@ name = "nemicosm"
 version = "0.1.0"
 dependencies = [
  "anyhow",
- "rustls",
+ "rustls 0.20.2",
- "trust-dns-client",
+ "trust-dns-resolver",
- "webpki-roots",
+ "webpki-roots 0.22.2",
-]
-
-[[package]]
-name = "nibble_vec"
-version = "0.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "77a5d83df9f36fe23f0c3648c6bbb8b0298bb5f1939c8f2704431371f4b84d43"
-dependencies = [
- "smallvec",
 ]
 
 [[package]]
@@ -262,25 +314,6 @@ dependencies = [
  "winapi",
 ]
 
-[[package]]
-name = "num-integer"
-version = "0.1.44"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d2cc698a63b549a70bc047073d2949cce27cd1c7b0a4a862d08a8031bc2801db"
-dependencies = [
- "autocfg",
- "num-traits",
-]
-
-[[package]]
-name = "num-traits"
-version = "0.2.14"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9a64b1ec5cda2586e284722486d802acf1f7dbdc623e2bfc57e65ca1cd099290"
-dependencies = [
- "autocfg",
-]
-
 [[package]]
 name = "num_cpus"
 version = "1.13.1"
@@ -297,6 +330,31 @@ version = "1.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "da32515d9f6e6e489d7bc9d84c71b060db7247dc035bbe44eac88cf87486d8d5"
 
+[[package]]
+name = "parking_lot"
+version = "0.11.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7d17b78036a60663b797adeaee46f5c9dfebb86948d1255007a1d6be0271ff99"
+dependencies = [
+ "instant",
+ "lock_api",
+ "parking_lot_core",
+]
+
+[[package]]
+name = "parking_lot_core"
+version = "0.8.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d76e8e1493bcac0d2766c42737f34458f1c8c50c0d23bcb24ea953affb273216"
+dependencies = [
+ "cfg-if",
+ "instant",
+ "libc",
+ "redox_syscall",
+ "smallvec",
+ "winapi",
+]
+
 [[package]]
 name = "percent-encoding"
 version = "2.1.0"
@@ -330,6 +388,12 @@ dependencies = [
  "unicode-xid",
 ]
 
+[[package]]
+name = "quick-error"
+version = "1.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a1d01941d82fa2ab50be1e79e6714289dd7cde78eba4c074bc5a4374f650dfe0"
+
 [[package]]
 name = "quote"
 version = "1.0.14"
@@ -339,16 +403,6 @@ dependencies = [
  "proc-macro2",
 ]
 
-[[package]]
-name = "radix_trie"
-version = "0.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c069c179fcdc6a2fe24d8d18305cf085fdbd4f922c041943e203685d6a1c58fd"
-dependencies = [
- "endian-type",
- "nibble_vec",
-]
-
 [[package]]
 name = "rand"
 version = "0.8.4"
@@ -389,6 +443,25 @@ dependencies = [
  "rand_core",
 ]
 
+[[package]]
+name = "redox_syscall"
+version = "0.2.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8383f39639269cde97d255a32bdb68c047337295414940c68bdd30c2e13203ff"
+dependencies = [
+ "bitflags",
+]
+
+[[package]]
+name = "resolv-conf"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "52e44394d2086d010551b14b53b1f24e31647570cd1deb0379e2c21b329aba00"
+dependencies = [
+ "hostname",
+ "quick-error",
+]
+
 [[package]]
 name = "ring"
 version = "0.16.20"
@@ -404,6 +477,19 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "rustls"
+version = "0.19.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "35edb675feee39aec9c99fa5ff985081995a06d594114ae14cbe797ad7b7a6d7"
+dependencies = [
+ "base64",
+ "log",
+ "ring",
+ "sct 0.6.1",
+ "webpki 0.21.4",
+]
+
 [[package]]
 name = "rustls"
 version = "0.20.2"
@@ -412,8 +498,24 @@ checksum = "d37e5e2290f3e040b594b1a9e04377c2c671f1a1cfd9bfdef82106ac1c113f84"
 dependencies = [
  "log",
  "ring",
- "sct",
+ "sct 0.7.0",
- "webpki",
+ "webpki 0.22.0",
+]
+
+[[package]]
+name = "scopeguard"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
+
+[[package]]
+name = "sct"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b362b83898e0e69f38515b82ee15aa80636befe47c3b6d3d89a911e78fc228ce"
+dependencies = [
+ "ring",
+ "untrusted",
 ]
 
 [[package]]
@@ -438,6 +540,17 @@ version = "1.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1ecab6c735a6bb4139c0caafd0cc3635748bbb3acf4550e8138122099251f309"
 
+[[package]]
+name = "socket2"
+version = "0.3.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "122e570113d28d773067fab24266b66753f6ea915758651696b6e35e49f88d6e"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "winapi",
+]
+
 [[package]]
 name = "spin"
 version = "0.5.2"
@@ -475,16 +588,6 @@ dependencies = [
  "syn",
 ]
 
-[[package]]
-name = "time"
-version = "0.1.43"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ca8a50ef2360fbd1eeb0ecd46795a87a19024eb4b53c5dc916ca1fd95fe62438"
-dependencies = [
- "libc",
- "winapi",
-]
-
 [[package]]
 name = "tinyvec"
 version = "1.5.1"
@@ -506,7 +609,9 @@ version = "1.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fbbf1c778ec206785635ce8ad57fe52b3009ae9e0c9f574a728f3049d3e55838"
 dependencies = [
+ "bytes",
  "libc",
+ "memchr",
  "mio",
  "num_cpus",
  "pin-project-lite",
@@ -514,23 +619,14 @@ dependencies = [
 ]
 
 [[package]]
-name = "trust-dns-client"
+name = "tokio-rustls"
-version = "0.20.3"
+version = "0.22.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fea72219106741b56ebab5e58e506beb657e1ed5d568a987141a9659124474f9"
+checksum = "bc6844de72e57df1980054b38be3a9f4702aba4858be64dd700181a8a6d0e1b6"
 dependencies = [
- "cfg-if",
+ "rustls 0.19.1",
- "chrono",
- "data-encoding",
- "futures-channel",
- "futures-util",
- "lazy_static",
- "log",
- "radix_trie",
- "rand",
- "thiserror",
  "tokio",
- "trust-dns-proto",
+ "webpki 0.21.4",
 ]
 
 [[package]]
@@ -558,6 +654,47 @@ dependencies = [
  "url",
 ]
 
+[[package]]
+name = "trust-dns-resolver"
+version = "0.20.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f6ad17b608a64bd0735e67bde16b0636f8aa8591f831a25d18443ed00a699770"
+dependencies = [
+ "cfg-if",
+ "futures-util",
+ "ipconfig",
+ "lazy_static",
+ "log",
+ "lru-cache",
+ "parking_lot",
+ "resolv-conf",
+ "rustls 0.19.1",
+ "smallvec",
+ "thiserror",
+ "tokio",
+ "tokio-rustls",
+ "trust-dns-proto",
+ "trust-dns-rustls",
+ "webpki-roots 0.21.1",
+]
+
+[[package]]
+name = "trust-dns-rustls"
+version = "0.20.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "808b76640354180e411074e9874632e73aa2a5206b7a621928834ae791e9628b"
+dependencies = [
+ "futures-channel",
+ "futures-io",
+ "futures-util",
+ "log",
+ "rustls 0.19.1",
+ "tokio",
+ "tokio-rustls",
+ "trust-dns-proto",
+ "webpki 0.21.4",
+]
+
 [[package]]
 name = "unicode-bidi"
 version = "0.3.7"
@@ -673,6 +810,16 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "webpki"
+version = "0.21.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b8e38c0608262c46d4a56202ebabdeb094cef7e560ca7a226c6bf055188aa4ea"
+dependencies = [
+ "ring",
+ "untrusted",
+]
+
 [[package]]
 name = "webpki"
 version = "0.22.0"
@@ -683,15 +830,30 @@ dependencies = [
  "untrusted",
 ]
 
+[[package]]
+name = "webpki-roots"
+version = "0.21.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aabe153544e473b775453675851ecc86863d2a81d786d741f6b76778f2a48940"
+dependencies = [
+ "webpki 0.21.4",
+]
+
 [[package]]
 name = "webpki-roots"
 version = "0.22.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "552ceb903e957524388c4d3475725ff2c8b7960922063af6ce53c9a43da07449"
 dependencies = [
- "webpki",
+ "webpki 0.22.0",
 ]
 
+[[package]]
+name = "widestring"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c168940144dd21fd8046987c16a46a33d5fc84eec29ef9dcddc2ac9e31526b7c"
+
 [[package]]
 name = "winapi"
 version = "0.3.9"
@@ -713,3 +875,12 @@ name = "winapi-x86_64-pc-windows-gnu"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+
+[[package]]
+name = "winreg"
+version = "0.6.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b2986deb581c4fe11b621998a5e53361efe6b48a151178d0cd9eeffa4dc6acc9"
+dependencies = [
+ "winapi",
+]

Cargo.toml

@@ -8,5 +8,7 @@ edition = "2021"
 [dependencies]
 anyhow = "1.0.52"
 rustls = "0.20.2"
-trust-dns-client = "0.20.3"
+trust-dns-resolver = { version = "0.20.3", features = ["dns-over-rustls"] }
 webpki-roots = "0.22.2"
+
+[features]

src/main.rs

@@ -1,9 +1,10 @@
 use std::str::FromStr;
 
 use anyhow::{bail, Result};
-use trust_dns_client::client::{Client, SyncClient};
+use trust_dns_resolver::{
-use trust_dns_client::rr::{DNSClass, Name, RData, RecordType};
+    config::{ResolverConfig, ResolverOpts},
-use trust_dns_client::udp::UdpClientConnection;
+    Resolver,
+};
 
 fn main() -> Result<()> {
     let (port, host) = resolve_dns("daeken.dev")?;
@@ -14,35 +15,29 @@ fn main() -> Result<()> {
     Ok(())
 }
 
+// TODO: How to cache this?
 fn resolve_dns(server: &str) -> Result<(u16, String)> {
-    let name = Name::from_str(&format!("_hypercosm._tls.{}", server))?;
+    let name = format!("_hypercosm._tls.{}", server);
 
-    let resp = make_dns_client()?.query(&name, DNSClass::IN, RecordType::SRV)?;
+    let resp = make_dns_client()?
+        .srv_lookup(name)?
+        .into_iter()
+        .collect::<Vec<_>>();
 
     // TODO: Ensure exactly 1 result: I think.
-    let ans = resp.answers()[0].rdata();
+    let srv = &resp[0];
 
-    if let RData::SRV(srv) = ans {
+    // TODO: Handle priority and weight.
-        // TODO: Handle priority and weight.
+    let port = srv.port();
+    // TODO: Should this be ascii or utf8
+    let name = srv.target().to_ascii();
 
-        let port = srv.port();
+    Ok((port, name))
-
-        // TODO: Should this be ascii or utf8
-        let name = srv.target().to_ascii();
-
-        Ok((port, name))
-    } else {
-        bail!("Invalid DNS responce");
-    }
 }
 
-fn make_dns_client() -> Result<impl Client> {
+fn make_dns_client() -> Result<Resolver> {
-    // TODO: Make this use TLS
+    Ok(Resolver::new(
-
+        ResolverConfig::cloudflare_tls(),
-    let addr = "1.1.1.1:53".parse()?;
+        ResolverOpts::default(),
-    let conn = UdpClientConnection::new(addr)?;
+    )?)
-
-    let client = SyncClient::new(conn);
-
-    Ok(client)
 }