feat: implemented/imported dns-websys

Cargo.toml

@@ -39,7 +39,7 @@ mdns = ["libp2p/mdns"]
 
 keypair_base64_encoding = ["dep:base64"]
 
-dns = ["libp2p/dns"]
+dns = ["libp2p/dns", "dep:parking_lot", "dep:serde", "dep:serde_json", "dep:url", "dep:js-sys", "dep:web-sys"]
 tls = ["libp2p/tls"]
 noise = ["libp2p/noise"]
 tcp = ["libp2p/tcp"]
@@ -91,6 +91,7 @@ libp2p-webrtc = { version = "=0.9.0-alpha.1", features = ["pem"] }
 libp2p-webrtc-websys = "0.4.0"
 other-error = "0.1.1"
 pollable-map = "0.1.7"
+parking_lot = "0.12"
 pem = { version = "3.0.5" }
 cbor4ii = { version = "1.2.2", features = ["serde1"] }
 rand = "0.8.5"
@@ -102,14 +103,26 @@ send_wrapper = "0.6.0"
 serde = { version = "1.0.219" }
 serde-wasm-bindgen = "0.6.5"
 serde_bytes = "0.11.19"
+serde_json = "1"
 sqlx = { version = "0.8", default-features = false, features = ["runtime-tokio", "sqlite"] }
 thiserror = "2.0.18"
 tracing = { version = "0.1.41" }
 zeroize = "1.8.1"
 
 tokio = { default-features = false, version = "1.47.1" }
+js-sys = "0.3"
+url = "2"
 wasm-bindgen = "0.2"
 wasm-bindgen-futures = { version = "0.4.50" }
+web-sys = { version = "0.3", features = [
+    "AbortSignal",
+    "Headers",
+    "Request",
+    "RequestInit",
+    "Response",
+    "Window",
+    "WorkerGlobalScope",
+] }
 web-time = "1.1.0"
 
 
@@ -156,10 +169,15 @@ futures-timer = { workspace = true, features = ["wasm-bindgen"] }
 getrandom = { workspace = true, features = ["js"] }
 getrandom_03 = { workspace = true, features = ["wasm_js"] }
 idb = { workspace = true, optional = true }
+js-sys = { workspace = true, optional = true }
 libp2p = { features = ["macros", "serde", "wasm-bindgen"], workspace = true }
 libp2p-webrtc-websys = { workspace = true, optional = true }
+parking_lot = { workspace = true, optional = true }
 send_wrapper = { workspace = true, features = ["futures"] }
 serde-wasm-bindgen.workspace = true
+serde_json = { workspace = true, optional = true }
 tokio = { default-features = false, features = ["sync", "macros"], workspace = true }
+url = { workspace = true, optional = true }
 wasm-bindgen.workspace = true
 wasm-bindgen-futures.workspace = true
+web-sys = { workspace = true, optional = true }

examples/browser-webrtc/src/lib.rs

@@ -22,7 +22,7 @@ pub async fn run(address: String) -> Result<(), JsError> {
         .set_swarm_config(|c| c.with_idle_connection_timeout(Duration::from_secs(30)))
         .set_swarm_event_callback({
             let body = body.clone();
-            move |_, e, _| {
+            move |_, _, e, _| {
                 body.append_p(&format!("{e:?}"))
                     .expect("failed to append <p>");
             }

src/builder.rs

@@ -1,6 +1,9 @@
 mod executor;
 pub(crate) mod transport;
 
+#[cfg(all(feature = "dns", target_arch = "wasm32"))]
+pub(crate) mod dns_websys;
+
 #[cfg(feature = "request-response")]
 use crate::behaviour::request_response::RequestResponseConfig;
 #[cfg(feature = "dns")]
@@ -812,6 +815,19 @@ where
         self
     }
 
+    /// Enables DNS with a specific resolver and configuration
+    #[cfg(target_arch = "wasm32")]
+    #[cfg(feature = "dns")]
+    pub fn enable_dns_with_resolver_and_config<F>(mut self, resolver: DnsResolver, f: F) -> Self
+    where
+        F: FnOnce(dns_websys::Config) -> dns_websys::Config + 'static,
+    {
+        self.transport_config.dns_resolver = Some(resolver);
+        self.transport_config.dns_config_fn = Box::new(f);
+        self.transport_config.enable_dns = true;
+        self
+    }
+
     /// Enables WebRTC transport
     #[cfg(feature = "webrtc")]
     pub fn enable_webrtc(mut self) -> Self {