diff --git a/BUILD.gn b/BUILD.gn
index 60545ce..d6647ee 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -48,7 +48,6 @@
     "runtime/bin:process_test",
     "runtime/bin:run_vm_tests",
     "runtime/vm:kernel_platform_files($host_toolchain)",
-    "samples/ffi/http:fake_http",
     "utils/dartdev:dartdev",
     "utils/dds:dds",
     "utils/kernel-service:kernel-service",
diff --git a/samples/ffi/http/.gitignore b/samples/ffi/http/.gitignore
deleted file mode 100644
index a18c42e..0000000
--- a/samples/ffi/http/.gitignore
+++ /dev/null
@@ -1,6 +0,0 @@
-.dart_tool
-.packages
-pubspec.lock
-lib/libfake_http.so
-lib/libfake_http.dylib
-lib/fake_http.dll
diff --git a/samples/ffi/http/BUILD.gn b/samples/ffi/http/BUILD.gn
deleted file mode 100644
index b8b98e6..0000000
--- a/samples/ffi/http/BUILD.gn
+++ /dev/null
@@ -1,9 +0,0 @@
-# Copyright (c) 2023, the Dart project authors.  Please see the AUTHORS file
-# for details. All rights reserved. Use of this source code is governed by a
-# BSD-style license that can be found in the LICENSE file.
-
-shared_library("fake_http") {
-  sources = [ "lib/fake_http.cc" ]
-  include_dirs = [ "." ]
-  ldflags = [ "-rdynamic" ]
-}
diff --git a/samples/ffi/http/README.md b/samples/ffi/http/README.md
deleted file mode 100644
index 023a324..0000000
--- a/samples/ffi/http/README.md
+++ /dev/null
@@ -1,12 +0,0 @@
-This is an example that shows how to use `NativeCallable.listener` to interact
-with a multi threaded native API.
-
-The native API is a fake HTTP library with some hard coded requests and
-responses. To build the dynamic library, run this command:
-
-```bash
-c++ -shared -fpic lib/fake_http.cc -lstdc++ -o lib/libfake_http.so
-```
-
-On Windows the output library should be `lib/fake_http.dll` and on Mac it should
-be `lib/libfake_http.dylib`.
diff --git a/samples/ffi/http/lib/dylib_utils.dart b/samples/ffi/http/lib/dylib_utils.dart
deleted file mode 100644
index e3ba4ab..0000000
--- a/samples/ffi/http/lib/dylib_utils.dart
+++ /dev/null
@@ -1,21 +0,0 @@
-// Copyright (c) 2023, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-import 'dart:ffi';
-import 'dart:io' show File, Platform;
-
-Uri dylibPath(String name, Uri path) {
-  if (Platform.isLinux || Platform.isAndroid || Platform.isFuchsia) {
-    return path.resolve("lib$name.so");
-  }
-  if (Platform.isMacOS) return path.resolve("lib$name.dylib");
-  if (Platform.isWindows) return path.resolve("$name.dll");
-  throw Exception("Platform not implemented");
-}
-
-DynamicLibrary dlopenPlatformSpecific(String name, {List<Uri>? paths}) =>
-    DynamicLibrary.open((paths ?? [Uri()])
-        .map((path) => dylibPath(name, path))
-        .firstWhere((lib) => File(lib.toFilePath()).existsSync())
-        .path);
diff --git a/samples/ffi/http/lib/fake_http.cc b/samples/ffi/http/lib/fake_http.cc
deleted file mode 100644
index 21a2987..0000000
--- a/samples/ffi/http/lib/fake_http.cc
+++ /dev/null
@@ -1,48 +0,0 @@
-// Copyright (c) 2023, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-#include <atomic>
-#include <chrono>
-#include <cstring>
-#include <thread>
-
-#if defined(_WIN32)
-#define DART_EXPORT extern "C" __declspec(dllexport)
-#else
-#define DART_EXPORT                                                            \
-  extern "C" __attribute__((visibility("default"))) __attribute((used))
-#endif
-
-constexpr char kExampleRequest[] = R"(
-GET / HTTP/1.1
-Host: www.example.com
-)";
-
-constexpr char kExampleResponse[] = R"(
-HTTP/1.1 200 OK
-Content-Length: 54
-Content-Type: text/html; charset=UTF-8
-
-<html>
-  <body>
-    Hello world!
-  </body>
-</html>
-)";
-
-DART_EXPORT void http_get(const char* uri, void (*onResponse)(const char*)) {
-  std::thread([onResponse]() {
-    std::this_thread::sleep_for(std::chrono::seconds(3));
-    onResponse(strdup(kExampleResponse));
-  }).detach();
-}
-
-DART_EXPORT void http_serve(void (*onRequest)(const char*)) {
-  std::thread([onRequest]() {
-    while (true) {
-      std::this_thread::sleep_for(std::chrono::seconds(1));
-      onRequest(strdup(kExampleRequest));
-    }
-  }).detach();
-}
diff --git a/samples/ffi/http/lib/http.dart b/samples/ffi/http/lib/http.dart
deleted file mode 100644
index 1fde486..0000000
--- a/samples/ffi/http/lib/http.dart
+++ /dev/null
@@ -1,97 +0,0 @@
-// Copyright (c) 2023, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-import 'dart:async';
-import 'dart:ffi';
-import 'dart:io';
-
-import 'package:ffi/ffi.dart';
-
-import 'dylib_utils.dart';
-
-// Runs a simple HTTP GET request using a native HTTP library that runs
-// the request on a background thread.
-Future<String> httpGet(String uri) async {
-  // Create the NativeCallable.listener.
-  final completer = Completer<String>();
-  void onResponse(Pointer<Utf8> responsePointer) {
-    completer.complete(responsePointer.toDartString());
-    calloc.free(responsePointer);
-  }
-
-  final callback = NativeCallable<HttpCallback>.listener(onResponse);
-
-  // Invoke the native HTTP API. Our example HTTP library runs our GET
-  // request on a background thread, and calls the callback on that same
-  // thread when it receives the response.
-  final uriPointer = uri.toNativeUtf8();
-  nativeHttpGet(uriPointer, callback.nativeFunction);
-  calloc.free(uriPointer);
-
-  // Wait for the response.
-  final response = await completer.future;
-
-  // Remember to close the NativeCallable once the native API is finished
-  // with it, otherwise this isolate will stay alive indefinitely.
-  callback.close();
-
-  return response;
-}
-
-// Start a HTTP server on a background thread.
-void httpServe(void Function(String) onRequest) {
-  // Create the NativeCallable.listener.
-  void onNativeRequest(Pointer<Utf8> requestPointer) {
-    onRequest(requestPointer.toDartString());
-    calloc.free(requestPointer);
-  }
-
-  final callback = NativeCallable<HttpCallback>.listener(onNativeRequest);
-
-  // Invoke the native function to start the HTTP server. Our example
-  // HTTP library will start a server on a background thread, and pass
-  // any requests it receives to out callback.
-  nativeHttpServe(callback.nativeFunction);
-
-  // The server will run indefinitely, and the callback needs to stay
-  // alive for that whole time, so we can't close the callback here.
-  // But we also don't want the callback to keep the isolate alive
-  // forever, so we set keepIsolateAlive to false.
-  callback.keepIsolateAlive = false;
-}
-
-// Load the native functions from a DynamicLibrary.
-late final DynamicLibrary dylib = dlopenPlatformSpecific('fake_http', paths: [
-  Platform.script.resolve('../lib/'),
-  Uri.file(Platform.resolvedExecutable),
-]);
-typedef HttpCallback = Void Function(Pointer<Utf8>);
-
-typedef HttpGetFunction = void Function(
-    Pointer<Utf8>, Pointer<NativeFunction<HttpCallback>>);
-typedef HttpGetNativeFunction = Void Function(
-    Pointer<Utf8>, Pointer<NativeFunction<HttpCallback>>);
-final nativeHttpGet =
-    dylib.lookupFunction<HttpGetNativeFunction, HttpGetFunction>('http_get');
-
-typedef HttpServeFunction = void Function(
-    Pointer<NativeFunction<HttpCallback>>);
-typedef HttpServeNativeFunction = Void Function(
-    Pointer<NativeFunction<HttpCallback>>);
-final nativeHttpServe = dylib
-    .lookupFunction<HttpServeNativeFunction, HttpServeFunction>('http_serve');
-
-Future<void> main() async {
-  print('Sending GET request...');
-  final response = await httpGet('http://example.com');
-  print('Received a response: $response');
-
-  print('Starting HTTP server...');
-  httpServe((String request) {
-    print('Received a request: $request');
-  });
-
-  await Future.delayed(Duration(seconds: 10));
-  print('All done');
-}
diff --git a/samples/ffi/http/pubspec.yaml b/samples/ffi/http/pubspec.yaml
deleted file mode 100644
index 2798023..0000000
--- a/samples/ffi/http/pubspec.yaml
+++ /dev/null
@@ -1,12 +0,0 @@
-name: http
-version: 0.0.1
-publish_to: none
-
-environment:
-  sdk: '>=3.0.0 <4.0.0'
-
-dependencies:
-  ffi: ^2.1.0
-
-dev_dependencies:
-  test: ^1.21.1
diff --git a/samples/ffi/http/test/http_test.dart b/samples/ffi/http/test/http_test.dart
deleted file mode 100644
index 509d8dd..0000000
--- a/samples/ffi/http/test/http_test.dart
+++ /dev/null
@@ -1,25 +0,0 @@
-// Copyright (c) 2023, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-import 'dart:async';
-import 'dart:io';
-
-import 'package:ffi/ffi.dart';
-import 'package:test/test.dart';
-
-import '../lib/http.dart';
-
-Future<void> main() async {
-  test('httpGet', () async {
-    final response = await httpGet('http://example.com');
-    expect(response, contains('Hello world!'));
-  });
-
-  test('httpServe', () async {
-    final completer = Completer<String>();
-    httpServe((request) => completer.complete(request));
-    final request = await completer.future;
-    expect(request, contains('www.example.com'));
-  });
-}
diff --git a/sdk/lib/ffi/ffi.dart b/sdk/lib/ffi/ffi.dart
index a24c7a0..45e014c 100644
--- a/sdk/lib/ffi/ffi.dart
+++ b/sdk/lib/ffi/ffi.dart
@@ -214,83 +214,6 @@
   ///
   /// This callback must be [close]d when it is no longer needed. The [Isolate]
   /// that created the callback will be kept alive until [close] is called.
-  ///
-  /// For example:
-  ///
-  /// ```dart
-  /// import 'dart:async';
-  /// import 'dart:ffi';
-  /// import 'package:ffi/ffi.dart';
-  ///
-  /// // Runs a simple HTTP GET request using a native HTTP library that runs
-  /// // the request on a background thread.
-  /// Future<String> httpGet(String uri) async {
-  ///   // Create the NativeCallable.listener.
-  ///   final completer = Completer<String>();
-  ///   void onResponse(Pointer<Utf8> responsePointer) {
-  ///     completer.complete(responsePointer.toDartString());
-  ///     calloc.free(responsePointer);
-  ///   }
-  ///   final callback = NativeCallable<HttpCallback>.listener(onResponse);
-  ///
-  ///   // Invoke the native HTTP API. Our example HTTP library runs our GET
-  ///   // request on a background thread, and calls the callback on that same
-  ///   // thread when it receives the response.
-  ///   final uriPointer = uri.toNativeUtf8();
-  ///   nativeHttpGet(uriPointer, callback.nativeFunction);
-  ///   calloc.free(uriPointer);
-  ///
-  ///   // Wait for the response.
-  ///   final response = await completer.future;
-  ///
-  ///   // Remember to close the NativeCallable once the native API is finished
-  ///   // with it, otherwise this isolate will stay alive indefinitely.
-  ///   callback.close();
-  ///
-  ///   return response;
-  /// }
-  ///
-  /// // Start a HTTP server on a background thread.
-  /// void httpServe(void Function(String) onRequest) {
-  ///   // Create the NativeCallable.listener.
-  ///   void onNativeRequest(Pointer<Utf8> requestPointer) {
-  ///     onRequest(requestPointer.toDartString());
-  ///     calloc.free(requestPointer);
-  ///   }
-  ///   final callback = NativeCallable<HttpCallback>.listener(onNativeRequest);
-  ///
-  ///   // Invoke the native function to start the HTTP server. Our example
-  ///   // HTTP library will start a server on a background thread, and pass
-  ///   // any requests it receives to out callback.
-  ///   nativeHttpServe(callback.nativeFunction);
-  ///
-  ///   // The server will run indefinitely, and the callback needs to stay
-  ///   // alive for that whole time, so we can't close the callback here.
-  ///   // But we also don't want the callback to keep the isolate alive
-  ///   // forever, so we set keepIsolateAlive to false.
-  ///   callback.keepIsolateAlive = false;
-  /// }
-  ///
-  /// // Load the native functions from a DynamicLibrary.
-  /// late final DynamicLibrary dylib = DynamicLibrary.process();
-  /// typedef HttpCallback = Void Function(Pointer<Utf8>);
-  ///
-  /// typedef HttpGetFunction = void Function(
-  ///     Pointer<Utf8>, Pointer<NativeFunction<HttpCallback>>);
-  /// typedef HttpGetNativeFunction = Void Function(
-  ///     Pointer<Utf8>, Pointer<NativeFunction<HttpCallback>>);
-  /// final nativeHttpGet =
-  ///     dylib.lookupFunction<HttpGetNativeFunction, HttpGetFunction>(
-  ///         'http_get');
-  ///
-  /// typedef HttpServeFunction = void Function(
-  ///     Pointer<NativeFunction<HttpCallback>>);
-  /// typedef HttpServeNativeFunction = Void Function(
-  ///     Pointer<NativeFunction<HttpCallback>>);
-  /// final nativeHttpServe =
-  ///     dylib.lookupFunction<HttpServeNativeFunction, HttpServeFunction>(
-  ///         'http_serve');
-  /// ```
   factory NativeCallable.listener(
       @DartRepresentationOf("T") Function callback) {
     throw UnsupportedError("NativeCallable cannot be constructed dynamically.");