Upload Files using WCF Rest Service

1. Interface Class

 [ServiceContract]  
 public interface IUpload  
 {  
     /// <summary>  
     /// Upload, runs synchronously service side.  
     /// </summary>  
     /// <param name="token">An application arbitrary piece of data. Can be used for request obfuscation.</param>  
     /// <param name="data">The data being uploaded.</param>  
     [OperationContract]  
     [WebInvoke(UriTemplate = "upload/{token}", BodyStyle = WebMessageBodyStyle.Wrapped, RequestFormat = WebMessageFormat.Json,  
           ResponseFormat = WebMessageFormat.Json)]  
     void Upload(string token, Stream data);    
  }   

2. Service Implementation Class

 public class UploadDataService : IUpload  
 {  
   public void Upload(string token, Stream data)  
   {  
       StreamToFile(data);  
   }  
   
   private void StreamToFile(Stream data)  
   {  
       // get full path to and create the directory to save file in  
       var arrBytes = ConvertStreamToByteArray(data);  
       File.WriteAllBytes(@"C:\Foo.data", arrBytes);  
   }
  
   private static byte[] ConvertStreamToByteArray(Stream input)  
   {  
     byte[] buffer = new byte[16 * 1024];  
     using (MemoryStream ms = new MemoryStream())  
     {  
        int read;  
        while ((read = input.Read(buffer, 0, buffer.Length)) > 0)  
        {  
           ms.Write(buffer, 0, read);  
        }  
        return ms.ToArray();  
       }  
     }
  
    private static byte[] ConvertStreamToByteArray(Stream input)  
    {  
      using (var streamReader = new MemoryStream())  
      {  
        input.CopyTo(streamReader);  
        return streamReader.ToArray();  
      }  
     }  
   }  
 }  

Here I added two methods to convert stream into a byte array. You can use one of methods in your implementation.

3. Service Configuration

 <?xml version="1.0"?>  
 <configuration>  
  <appSettings>  
   <add key="aspnet:UseTaskFriendlySynchronizationContext" value="true" />  
  </appSettings>  
  <system.web>  
   <compilation debug="true" targetFramework="4.5" />  
   <httpRuntime targetFramework="4.5"/>  
  </system.web>  
  <system.serviceModel>  
   <bindings>  
    <webHttpBinding>  
     <binding name="streamWebHttpBinding" maxReceivedMessageSize="1000000000000" receiveTimeout="01:00:00" sendTimeout="01:00:00" transferMode="Streamed" />  
     <!--<binding name="streamWebHttpBinding" receiveTimeout="01:00:00" sendTimeout="01:00:00" transferMode="Streamed" />-->  
    </webHttpBinding>  
   </bindings>  
   <behaviors>  
    <serviceBehaviors>  
     <behavior name="LargeUploadBehavior">  
      <serviceDebug includeExceptionDetailInFaults="true"/>  
     </behavior>  
    </serviceBehaviors>  
    <endpointBehaviors>  
     <behavior name ="RestBehavior">  
      <webHttp/>  
     </behavior>  
    </endpointBehaviors>  
   </behaviors>  
   <services>  
    <service name ="WcfService1.UploadDataService" behaviorConfiguration="LargeUploadBehavior">  
     <endpoint behaviorConfiguration="RestBehavior" address="" contract="WcfService1.IUpload" binding="webHttpBinding" bindingConfiguration="streamWebHttpBinding" />  
     </service>   
   </services>  
   <serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true" />  
  </system.serviceModel>  
  <system.webServer>  
   <modules runAllManagedModulesForAllRequests="true"/>  
   <directoryBrowse enabled="true"/>  
  </system.webServer>  
 </configuration>