Add new System.Net.Http.Json project/namespace

src/libraries/System.Net.Http.Json/Directory.Build.props

@@ -0,0 +1,7 @@
+<Project>
+  <Import Project="..\Directory.Build.props" />
+  <PropertyGroup>
+    <StrongNameKeyId>Open</StrongNameKeyId>
+    <IsNETCoreApp>true</IsNETCoreApp>
+  </PropertyGroup>
+</Project>

src/libraries/System.Net.Http.Json/System.Net.Http.Json.sln

@@ -0,0 +1,60 @@
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.29806.167
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "System.Net.Http.Json", "src\System.Net.Http.Json.csproj", "{1D422B1D-D7C4-41B9-862D-EB3D98DF37DE}"
+	ProjectSection(ProjectDependencies) = postProject
+		{132BF813-FC40-4D39-8B6F-E55D7633F0ED} = {132BF813-FC40-4D39-8B6F-E55D7633F0ED}
+	EndProjectSection
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "System.Net.Http.Json", "ref\System.Net.Http.Json.csproj", "{132BF813-FC40-4D39-8B6F-E55D7633F0ED}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "src", "src", "{E107E9C1-E893-4E87-987E-04EF0DCEAEFD}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "ref", "ref", "{2E666815-2EDB-464B-9DF6-380BF4789AD4}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "tests", "tests", "{1B471D80-205C-4E9C-8D36-601275080642}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "System.Net.Http.Json.Functional.Tests", "tests\FunctionalTests\System.Net.Http.Json.Functional.Tests.csproj", "{DC607A29-7C8D-4933-9AEB-23CF696B2BC6}"
+	ProjectSection(ProjectDependencies) = postProject
+		{1D422B1D-D7C4-41B9-862D-EB3D98DF37DE} = {1D422B1D-D7C4-41B9-862D-EB3D98DF37DE}
+	EndProjectSection
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "System.Net.Http.Json.Unit.Tests", "tests\UnitTests\System.Net.Http.Json.Unit.Tests.csproj", "{54A8AEE1-BEF2-454A-B1A1-548D73F25F0E}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{1D422B1D-D7C4-41B9-862D-EB3D98DF37DE}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{1D422B1D-D7C4-41B9-862D-EB3D98DF37DE}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{1D422B1D-D7C4-41B9-862D-EB3D98DF37DE}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{1D422B1D-D7C4-41B9-862D-EB3D98DF37DE}.Release|Any CPU.Build.0 = Release|Any CPU
+		{132BF813-FC40-4D39-8B6F-E55D7633F0ED}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{132BF813-FC40-4D39-8B6F-E55D7633F0ED}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{132BF813-FC40-4D39-8B6F-E55D7633F0ED}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{132BF813-FC40-4D39-8B6F-E55D7633F0ED}.Release|Any CPU.Build.0 = Release|Any CPU
+		{DC607A29-7C8D-4933-9AEB-23CF696B2BC6}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{DC607A29-7C8D-4933-9AEB-23CF696B2BC6}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{DC607A29-7C8D-4933-9AEB-23CF696B2BC6}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{DC607A29-7C8D-4933-9AEB-23CF696B2BC6}.Release|Any CPU.Build.0 = Release|Any CPU
+		{54A8AEE1-BEF2-454A-B1A1-548D73F25F0E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{54A8AEE1-BEF2-454A-B1A1-548D73F25F0E}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{54A8AEE1-BEF2-454A-B1A1-548D73F25F0E}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{54A8AEE1-BEF2-454A-B1A1-548D73F25F0E}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(NestedProjects) = preSolution
+		{1D422B1D-D7C4-41B9-862D-EB3D98DF37DE} = {E107E9C1-E893-4E87-987E-04EF0DCEAEFD}
+		{132BF813-FC40-4D39-8B6F-E55D7633F0ED} = {2E666815-2EDB-464B-9DF6-380BF4789AD4}
+		{DC607A29-7C8D-4933-9AEB-23CF696B2BC6} = {1B471D80-205C-4E9C-8D36-601275080642}
+		{54A8AEE1-BEF2-454A-B1A1-548D73F25F0E} = {1B471D80-205C-4E9C-8D36-601275080642}
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {5100F629-0FAB-4C6F-9A54-95AE9565EE0D}
+	EndGlobalSection
+EndGlobal

src/libraries/System.Net.Http.Json/pkg/System.Net.Http.Json.pkgproj

@@ -0,0 +1,10 @@
+<Project DefaultTargets="Build">
+  <Import Project="$([MSBuild]::GetPathOfFileAbove(Directory.Build.props))" />
+  <ItemGroup>
+    <ProjectReference Include="..\ref\System.Net.Http.Json.csproj">
+      <SupportedFramework>net461;netcoreapp2.0;uap10.0.16299;$(AllXamarinFrameworks)</SupportedFramework>
+    </ProjectReference>
+    <ProjectReference Include="..\src\System.Net.Http.Json.csproj" />
+  </ItemGroup>
+  <Import Project="$([MSBuild]::GetPathOfFileAbove(Directory.Build.targets))" />
+</Project>

src/libraries/System.Net.Http.Json/ref/System.Net.Http.Json.cs

@@ -0,0 +1,44 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+// ------------------------------------------------------------------------------
+// Changes to this file must follow the https://aka.ms/api-review process.
+// ------------------------------------------------------------------------------
+
+namespace System.Net.Http.Json
+{
+    public static partial class HttpClientJsonExtensions
+    {
+        public static System.Threading.Tasks.Task<object?> GetFromJsonAsync(this System.Net.Http.HttpClient client, string? requestUri, System.Type type, System.Text.Json.JsonSerializerOptions? options, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }
+        public static System.Threading.Tasks.Task<object?> GetFromJsonAsync(this System.Net.Http.HttpClient client, string? requestUri, System.Type type, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }
+        public static System.Threading.Tasks.Task<object?> GetFromJsonAsync(this System.Net.Http.HttpClient client, System.Uri? requestUri, System.Type type, System.Text.Json.JsonSerializerOptions? options, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }
+        public static System.Threading.Tasks.Task<object?> GetFromJsonAsync(this System.Net.Http.HttpClient client, System.Uri? requestUri, System.Type type, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }
+        public static System.Threading.Tasks.Task<TValue> GetFromJsonAsync<TValue>(this System.Net.Http.HttpClient client, string? requestUri, System.Text.Json.JsonSerializerOptions? options, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }
+        public static System.Threading.Tasks.Task<TValue> GetFromJsonAsync<TValue>(this System.Net.Http.HttpClient client, string? requestUri, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }
+        public static System.Threading.Tasks.Task<TValue> GetFromJsonAsync<TValue>(this System.Net.Http.HttpClient client, System.Uri? requestUri, System.Text.Json.JsonSerializerOptions? options, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }
+        public static System.Threading.Tasks.Task<TValue> GetFromJsonAsync<TValue>(this System.Net.Http.HttpClient client, System.Uri? requestUri, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }
+        public static System.Threading.Tasks.Task<System.Net.Http.HttpResponseMessage> PostAsJsonAsync<TValue>(this System.Net.Http.HttpClient client, string? requestUri, TValue value, System.Text.Json.JsonSerializerOptions? options = null, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }
+        public static System.Threading.Tasks.Task<System.Net.Http.HttpResponseMessage> PostAsJsonAsync<TValue>(this System.Net.Http.HttpClient client, string? requestUri, TValue value, System.Threading.CancellationToken cancellationToken) { throw null; }
+        public static System.Threading.Tasks.Task<System.Net.Http.HttpResponseMessage> PostAsJsonAsync<TValue>(this System.Net.Http.HttpClient client, System.Uri? requestUri, TValue value, System.Text.Json.JsonSerializerOptions? options = null, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }
+        public static System.Threading.Tasks.Task<System.Net.Http.HttpResponseMessage> PostAsJsonAsync<TValue>(this System.Net.Http.HttpClient client, System.Uri? requestUri, TValue value, System.Threading.CancellationToken cancellationToken) { throw null; }
+        public static System.Threading.Tasks.Task<System.Net.Http.HttpResponseMessage> PutAsJsonAsync<TValue>(this System.Net.Http.HttpClient client, string? requestUri, TValue value, System.Text.Json.JsonSerializerOptions? options = null, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }
+        public static System.Threading.Tasks.Task<System.Net.Http.HttpResponseMessage> PutAsJsonAsync<TValue>(this System.Net.Http.HttpClient client, string? requestUri, TValue value, System.Threading.CancellationToken cancellationToken) { throw null; }
+        public static System.Threading.Tasks.Task<System.Net.Http.HttpResponseMessage> PutAsJsonAsync<TValue>(this System.Net.Http.HttpClient client, System.Uri? requestUri, TValue value, System.Text.Json.JsonSerializerOptions? options = null, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }
+        public static System.Threading.Tasks.Task<System.Net.Http.HttpResponseMessage> PutAsJsonAsync<TValue>(this System.Net.Http.HttpClient client, System.Uri? requestUri, TValue value, System.Threading.CancellationToken cancellationToken) { throw null; }
+    }
+    public static partial class HttpContentJsonExtensions
+    {
+        public static System.Threading.Tasks.Task<object?> ReadFromJsonAsync(this System.Net.Http.HttpContent content, System.Type type, System.Text.Json.JsonSerializerOptions? options = null, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }
+        public static System.Threading.Tasks.Task<T> ReadFromJsonAsync<T>(this System.Net.Http.HttpContent content, System.Text.Json.JsonSerializerOptions? options = null, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }
+    }
+    public sealed partial class JsonContent : System.Net.Http.HttpContent
+    {
+        internal JsonContent() { }
+        public System.Type ObjectType { get { throw null; } }
+        public object? Value { get { throw null; } }
+        public static System.Net.Http.Json.JsonContent Create(object? inputValue, System.Type inputType, System.Net.Http.Headers.MediaTypeHeaderValue? mediaType = null, System.Text.Json.JsonSerializerOptions? options = null) { throw null; }
+        public static System.Net.Http.Json.JsonContent Create<T>(T inputValue, System.Net.Http.Headers.MediaTypeHeaderValue? mediaType = null, System.Text.Json.JsonSerializerOptions? options = null) { throw null; }
+        protected override System.Threading.Tasks.Task SerializeToStreamAsync(System.IO.Stream stream, System.Net.TransportContext? context) { throw null; }
+        protected override bool TryComputeLength(out long length) { throw null; }
+    }
+}

src/libraries/System.Net.Http.Json/ref/System.Net.Http.Json.csproj

@@ -0,0 +1,18 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <TargetFrameworks>netstandard2.0;$(NetCoreAppCurrent)</TargetFrameworks>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="System.Net.Http.Json.cs" />
+  </ItemGroup>
+  <ItemGroup Condition="'$(TargetFramework)' == '$(NetCoreAppCurrent)'">
+    <Compile Include="System.Net.Http.Json.netcoreapp.cs" />
+    <ProjectReference Include="..\..\System.Runtime\ref\System.Runtime.csproj" />
+    <ProjectReference Include="..\..\System.Net.Http\ref\System.Net.Http.csproj" />
+    <ProjectReference Include="..\..\System.Net.Primitives\ref\System.Net.Primitives.csproj" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\..\System.Text.Json\ref\System.Text.Json.csproj" />
+  </ItemGroup>
+</Project>

src/libraries/System.Net.Http.Json/ref/System.Net.Http.Json.netcoreapp.cs

@@ -0,0 +1,11 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace System.Net.Http.Json
+{
+    public sealed partial class JsonContent : System.Net.Http.HttpContent
+    {
+        protected override System.Threading.Tasks.Task SerializeToStreamAsync(System.IO.Stream stream, System.Net.TransportContext? context, System.Threading.CancellationToken cancellationToken) { throw null; }
+    }
+}

src/libraries/System.Net.Http.Json/src/Resources/Strings.resx

@@ -0,0 +1,135 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+
+    Version 2.0
+
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+
+    Example:
+
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <data name="Argument_InvalidOffLen" xml:space="preserve">
+    <value>Offset and length were out of bounds for the array or count is greater than the number of elements from index to the end of the source collection.</value>
+  </data>
+  <data name="CharSetInvalid" xml:space="preserve">
+    <value>The character set provided in ContentType is invalid.</value>
+  </data>
+  <data name="CharSetNotSupported" xml:space="preserve">
+    <value>The character set provided in ContentType is not supported.</value>
+  </data>
+  <data name="ContentTypeNotSupported" xml:space="preserve">
+    <value>The provided ContentType is not supported; the supported types are 'application/json' and the structured syntax suffix 'application/+json'.</value>
+  </data>
+  <data name="SerializeWrongType" xml:space="preserve">
+    <value>The specified type {0} must derive from the specific value's type {1}.</value>
+  </data>
+</root>