Use tokio built in dns

Cargo.toml

@@ -13,7 +13,7 @@ edition = "2018"
 
 [features]
 default = ["connect", "tls"]
-connect = ["tokio-dns-unofficial", "tokio-net", "stream"]
+connect = ["tokio-net", "stream"]
 tls = ["tokio-tls", "native-tls", "stream", "tungstenite/tls"]
 stream = ["bytes"]
 
@@ -37,11 +37,6 @@ version = "0.4.8"
 optional = true
 version = "0.2.0"
 
-[dependencies.tokio-dns-unofficial]
-optional = true
-#version = "0.4.0"
-git = "https://github.com/sbstp/tokio-dns.git"
-
 [dependencies.tokio-net]
 optional = true
 version = "0.2.0-alpha.6"

src/connect.rs

@@ -125,7 +125,7 @@ where
         .port_or_known_default()
         .expect("Bug: port unknown");
 
-    let try_socket = tokio_dns::TcpStream::connect((domain.as_str(), port)).await;
+    let try_socket = TcpStream::connect((domain.as_str(), port)).await;
     let socket = try_socket.map_err(Error::Io)?;
     client_async_tls(request, socket).await
 }

src/lib.rs

@@ -355,6 +355,5 @@ mod tests {
 
         is_unpin::<WebSocketStream<tokio::net::TcpStream>>();
         is_unpin::<WebSocketStream<AutoStream<tokio::net::TcpStream>>>();
-        is_unpin::<WebSocketStream<AutoStream<tokio_dns::TcpStream>>>();
     }
 }