Changed location of HTTP clients

src/content/tutorials/server/fetch-data.md

@@ -40,6 +40,21 @@ as well as Dart's JSON support in the [`dart:convert`][convert-docs] library
 to fetch, decode, then use JSON-formatted data
 retrieved from an HTTP server.
 
+{{site.alert.secondary}}
+  Two other packages exist with platform-specific implementations for mobile.
+
+  * [cronet_http]({{site.pub-pkg}}/cronet_http)
+    provides access to the Android [Cronet][] HTTP client.
+  * [cupertino_http]({{site.pub-pkg}}/cupertino_http)
+    provides access to Apple's [Foundation URL Loading System][furl].
+
+  To learn more about their capabilities,
+  consult the package documentation.
+
+{{site.alert.end}}
+
+[Cronet]: {{site.android-dev}}guide/topics/connectivity/cronet/reference/org/chromium/net/package-summary
+[furl]: {{site.apple-dev}}/documentation/foundation/url_loading_system
 [JSON]: https://www.json.org/
 
 ## Background concepts
@@ -133,13 +148,6 @@ The `package:http` library provides a cross-platform solution
 for making composable HTTP requests,
 with optional fine-grained control.
 
-:::note
-You should avoid directly using `dart:io` or `dart:html`
-to make HTTP requests.
-Those libraries are platform-dependent
-and tied to a single implementation.
-:::
-
 To add a dependency on `package:http`,
 run the following [`dart pub add`][] command
 from the top of your repo:

src/content/tutorials/server/httpserver.md

@@ -9,13 +9,6 @@ prevpage:
 
 Dart resources for writing HTTP servers include:
 
-## Packages
-
-* [cronet_http]({{site.pub-pkg}}/cronet_http)
-  Provides access to the Android [Cronet][] HTTP client.
-* [cupertino_http]({{site.pub-pkg}}/cupertino_http)
-  Provides access to Apple's [Foundation URL Loading System][furl].
-
 ## Documentation
 
 * [Using Google Cloud][] has information on Google Cloud products
@@ -44,6 +37,3 @@ Dart resources for writing HTTP servers include:
 [simple-sample]: https://github.com/dart-lang/samples/tree/main/server/simple
 [Using Google APIs]: /guides/google-apis
 [Using Google Cloud]: /server/google-cloud
-
-[Cronet]: {{site.android-dev}}guide/topics/connectivity/cronet/reference/org/chromium/net/package-summary
-[furl]: {{site.apple-dev}}/documentation/foundation/url_loading_system