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Caching WCF javascript proxy on browser

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4 Apr 2012CPOL3 min read 40.3K   236   17  
WCF Javascript Proxies (Service.svc/js) are never cached. They get generated and downloaded on every page view thus increasing page download time and server CPU. Here's an HttpModule to cache WCF Javascript Proxy on browser and respond with HTTP 304, if unchanged.
<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <PropertyGroup>
    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
    <ProductVersion>
    </ProductVersion>
    <SchemaVersion>2.0</SchemaVersion>
    <ProjectGuid>{82030C51-136B-4B72-AAC0-6B568D10A2FD}</ProjectGuid>
    <ProjectTypeGuids>{349c5851-65df-11da-9384-00065b846f21};{fae04ec0-301f-11d3-bf4b-00c04f79efbc}</ProjectTypeGuids>
    <OutputType>Library</OutputType>
    <AppDesignerFolder>Properties</AppDesignerFolder>
    <RootNamespace>WcfService1</RootNamespace>
    <AssemblyName>WcfService1</AssemblyName>
    <TargetFrameworkVersion>v3.5</TargetFrameworkVersion>
    <UseIISExpress>true</UseIISExpress>
  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
    <DebugSymbols>true</DebugSymbols>
    <DebugType>full</DebugType>
    <Optimize>false</Optimize>
    <OutputPath>bin\</OutputPath>
    <DefineConstants>DEBUG;TRACE</DefineConstants>
    <ErrorReport>prompt</ErrorReport>
    <WarningLevel>4</WarningLevel>
  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
    <DebugType>pdbonly</DebugType>
    <Optimize>true</Optimize>
    <OutputPath>bin\</OutputPath>
    <DefineConstants>TRACE</DefineConstants>
    <ErrorReport>prompt</ErrorReport>
    <WarningLevel>4</WarningLevel>
  </PropertyGroup>
  <ItemGroup>
    <Reference Include="System" />
    <Reference Include="System.Configuration" />
    <Reference Include="System.Core" />
    <Reference Include="System.Data" />
    <Reference Include="System.Drawing" />
    <Reference Include="System.EnterpriseServices" />
    <Reference Include="System.Runtime.Serialization" />
    <Reference Include="System.ServiceModel" />
    <Reference Include="System.ServiceModel.Web" />
    <Reference Include="System.Web" />
    <Reference Include="System.Web.Extensions" />
    <Reference Include="System.Web.Mobile" />
    <Reference Include="System.Web.Services" />
    <Reference Include="System.Xml" />
    <Reference Include="System.Xml.Linq" />
  </ItemGroup>
  <ItemGroup>
    <Content Include="Default.aspx" />
    <Content Include="Global.asax" />
    <Content Include="Service1.svc" />
    <Content Include="Web.config" />
    <Content Include="Web.Debug.config">
      <DependentUpon>Web.config</DependentUpon>
    </Content>
    <Content Include="Web.Release.config">
      <DependentUpon>Web.config</DependentUpon>
    </Content>
  </ItemGroup>
  <ItemGroup>
    <Compile Include="Default.aspx.cs">
      <DependentUpon>Default.aspx</DependentUpon>
      <SubType>ASPXCodeBehind</SubType>
    </Compile>
    <Compile Include="Default.aspx.designer.cs">
      <DependentUpon>Default.aspx</DependentUpon>
    </Compile>
    <Compile Include="Global.asax.cs">
      <DependentUpon>Global.asax</DependentUpon>
    </Compile>
    <Compile Include="JavascriptProxyCacheModule.cs" />
    <Compile Include="Service1.svc.cs">
      <DependentUpon>Service1.svc</DependentUpon>
    </Compile>
    <Compile Include="IService1.cs" />
    <Compile Include="Properties\AssemblyInfo.cs" />
  </ItemGroup>
  <ItemGroup>
    <Folder Include="App_Data\" />
  </ItemGroup>
  <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
  <Import Project="$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v10.0\WebApplications\Microsoft.WebApplication.targets" />
  <ProjectExtensions>
    <VisualStudio>
      <FlavorProperties GUID="{349c5851-65df-11da-9384-00065b846f21}">
        <WebProjectProperties>
          <UseIIS>True</UseIIS>
          <AutoAssignPort>True</AutoAssignPort>
          <DevelopmentServerPort>62071</DevelopmentServerPort>
          <DevelopmentServerVPath>/</DevelopmentServerVPath>
          <IISUrl>http://localhost:60462/</IISUrl>
          <NTLMAuthentication>False</NTLMAuthentication>
          <UseCustomServer>False</UseCustomServer>
          <CustomServerUrl>
          </CustomServerUrl>
          <SaveServerSettingsInUserFile>False</SaveServerSettingsInUserFile>
          <EnableWcfTestClientForSVCDefaultValue>True</EnableWcfTestClientForSVCDefaultValue>
        </WebProjectProperties>
      </FlavorProperties>
    </VisualStudio>
  </ProjectExtensions>
  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
       Other similar extension points exist, see Microsoft.Common.targets.
  <Target Name="BeforeBuild">
  </Target>
  <Target Name="AfterBuild">
  </Target>
  -->
</Project>

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License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


Written By
Architect BT, UK (ex British Telecom)
United Kingdom United Kingdom

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