http sample

src/mono/sample/wasi/Directory.Build.targets

@@ -16,13 +16,13 @@
     -->
     <Exec WorkingDirectory="bin/wasi-wasm/AppBundle"
           Condition="'$(WasmBuildNative)' != 'true'"
-          Command="$(WasmtimeDir)wasmtime$(_ExeExt) $(MONO_LOG_LEVEL) --dir . dotnet.wasm $(_SampleProjectName)" IgnoreExitCode="true" />
+          Command="$(WasmtimeDir)wasmtime$(_ExeExt) $(MONO_LOG_LEVEL) -S http --dir . dotnet.wasm $(_SampleProjectName)" IgnoreExitCode="true" />
     <Exec WorkingDirectory="bin/wasi-wasm/AppBundle"
           Condition="'$(WasmBuildNative)' == 'true' and '$(WasmSingleFileBundle)' != 'true'"
-          Command="$(WasmtimeDir)wasmtime$(_ExeExt) $(MONO_LOG_LEVEL) --dir . dotnet.wasm" IgnoreExitCode="true" />
+          Command="$(WasmtimeDir)wasmtime$(_ExeExt) $(MONO_LOG_LEVEL) -S http --dir . dotnet.wasm" IgnoreExitCode="true" />
     <Exec WorkingDirectory="bin/wasi-wasm/AppBundle"
           Condition="'$(WasmSingleFileBundle)' == 'true'"
-          Command="$(WasmtimeDir)wasmtime$(_ExeExt) $(MONO_LOG_LEVEL) $([System.IO.Path]::ChangeExtension($(_SampleAssembly), '.wasm'))" IgnoreExitCode="true" />
+          Command="$(WasmtimeDir)wasmtime$(_ExeExt) $(MONO_LOG_LEVEL) -S http $([System.IO.Path]::ChangeExtension($(_SampleAssembly), '.wasm'))" IgnoreExitCode="true" />
   </Target>
 
   <Import Project="$(RepositoryEngineeringDir)testing\wasi-provisioning.targets" />

src/mono/sample/wasi/http-p2/Program.cs

@@ -0,0 +1,57 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+using System;
+using System.Net.Http.Headers;
+using System.Net.Http;
+using System.Threading.Tasks;
+using System.Threading;
+using System.Runtime.CompilerServices;
+
+public class Test
+{
+    public static int Main(string[] args)
+    {
+        var task = Work();
+        while (!task.IsCompleted)
+        {
+            WasiEventLoop.DispatchWasiEventLoop();
+        }
+        var exception = task.Exception;
+        if (exception is not null)
+        {
+            throw exception;
+        }
+
+        return 0;
+    }
+
+    public static async Task Work()
+    {
+        using HttpClient client = new();
+        client.Timeout = Timeout.InfiniteTimeSpan;
+        client.DefaultRequestHeaders.Accept.Clear();
+        client.DefaultRequestHeaders.Accept.Add(
+            new MediaTypeWithQualityHeaderValue("application/vnd.github.v3+json"));
+        client.DefaultRequestHeaders.Add("User-Agent", ".NET Foundation Repository Reporter");
+
+        var query="https://api.github.com/orgs/dotnet/repos?per_page=1";
+        var json = await client.GetStringAsync(query);
+
+        Console.WriteLine();
+        Console.WriteLine("GET "+query);
+        Console.WriteLine();
+        Console.WriteLine(json);
+    }
+
+    private static class WasiEventLoop
+    {
+        internal static void DispatchWasiEventLoop()
+        {
+            CallDispatchWasiEventLoop((Thread)null!);
+
+            [UnsafeAccessor(UnsafeAccessorKind.StaticMethod, Name = "DispatchWasiEventLoop")]
+            static extern void CallDispatchWasiEventLoop(Thread t);
+        }
+    }
+}

src/mono/sample/wasi/http-p2/Wasip2.Http.Console.Sample.csproj

@@ -0,0 +1,11 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <TargetFramework>$(NetCoreAppCurrent)</TargetFramework>
+    <!-- 
+    <WasmSingleFileBundle>true</WasmSingleFileBundle>
+    <InvariantGlobalization>true</InvariantGlobalization>
+    -->
+  </PropertyGroup>
+
+  <Target Name="RunSample" DependsOnTargets="RunSampleWithWasmtime" />
+</Project>