System.Net.Http.HttpClient F# snippets (dotnet#8078)

Author: albert-du

snippets/fsharp/System.Net.Http/HttpClient/fs.fsproj

@@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <Compile Include="source.fs" />
+  </ItemGroup>
+</Project>

snippets/fsharp/System.Net.Http/HttpClient/source.fs

@@ -0,0 +1,25 @@
+// <Snippet1>
+open System.Net.Http
+
+// HttpClient is intended to be instantiated once per application, rather than per-use. See Remarks.
+let client = new HttpClient()
+
+let main =
+    task {
+        // Call asynchronous network methods in a try/catch block to handle exceptions.
+        try
+            let! response = client.GetAsync "http://www.contoso.com/"
+            response.EnsureSuccessStatusCode() |> ignore
+            let! responseBody = response.Content.ReadAsStringAsync()
+            // Above three lines can be replaced with new helper method below
+            // let! responseBody = client.GetStringAsync uri
+
+            printfn $"{responseBody}"
+        with
+        | :? HttpRequestException as e ->
+            printfn "\nException Caught!"
+            printfn $"Message :{e.Message} "
+    }
+
+main.Wait()
+// </Snippet1>

xml/System.Net.Http/HttpClient.xml

@@ -84,6 +84,12 @@ public class GoodController : ApiController
 }
 ```
 
+```fsharp
+type GoodController() =
+    inherit ApiController()
+    let httpClient = new HttpClient()
+```
+
 ```vb
   Public Class GoodController
     Inherits ApiController  
@@ -131,6 +137,7 @@ Certain aspects of <xref:System.Net.Http.HttpClient>'s behavior are customizable
 
 ## Examples  
  :::code language="csharp" source="~/snippets/csharp/System.Net.Http/HttpClient/source.cs" id="Snippet1":::  
+ :::code language="fsharp" source="~/snippets/fsharp/System.Net.Http/HttpClient/source.fs" id="Snippet1":::  
  :::code language="vb" source="~/snippets/visualbasic/VS_Snippets_Misc/system.net.http.httpclient/vb/source.vb" id="Snippet1":::
 
  The preceding code example uses an `async Task Main()` entry point. That feature requires C# 7.1 or later.