Uploading an image using WCF RESTFul service full working example

Tomer picture Tomer · Feb 26, 2012 · Viewed 17.9k times · Source

As part of a pretty large application I need to provide a REST Service that uploads an image. Since the whole application is .NET, I've been trying to find an working example of a WCF RESTFul Service that does that but couldn't (Which defines the whole configurations). There are handful of examples online but I couldn't (thanks to my lack of knowledge in WCF) make none of them work. (I keep getting exceptions thrown).

I'll be happy to get linked to a working one.

Answer

Rajesh picture Rajesh · Feb 27, 2012

Please find a sample below:

On Server:

Interface:

[WebInvoke]
string PostImage(Stream stream);

My Implementation class:

public string PostImage(Stream stream)
        {
            byte[] buffer = new byte[10000];
            stream.Read(buffer, 0, 10000);
            FileStream f = new FileStream("C:\\temp\\sample.jpg", FileMode.OpenOrCreate);
            f.Write(buffer, 0, buffer.Length);
            f.Close();
            stream.Close();
            return "Recieved the image on server";
        }

NOTE: Make sure that your WCF Service application app pools identity has write access to the c:\Temp location to write the file. Alternatively you can replace the logic to save the image to db or any other way you want it to.

My web.config on server:

<services>
      <service name="XMLService.Service1" behaviorConfiguration="default">
        <endpoint address="" behaviorConfiguration="web" binding="webHttpBinding" bindingConfiguration="RestBinding" name="Service1" contract="XMLService.IService1" />
      </service>
</services>
<behaviors>
      <endpointBehaviors>
        <behavior name="web">
          <webHttp />
        </behavior>
  <serviceBehaviors>        
    <behavior name="default">
      <dataContractSerializer maxItemsInObjectGraph="2147483647" />
      <serviceMetadata httpGetEnabled="true" />
      <serviceDebug includeExceptionDetailInFaults="true" />
    </behavior>
  </serviceBehaviors>
</behaviors>
<webHttpBinding>
<binding name="RestBinding">
     <readerQuotas maxStringContentLength="5242880" maxArrayLength="16384" maxBytesPerRead="4096" />
     <security mode="None">            
     </security>
     </binding>
</webHttpBinding>

Now on my client i have the following code:

var client = new RestClient();
client.BaseUrl = "http://localhost/XMLService/Service1.svc";
var request = new RestRequest(method) { DateFormat = DataFormat.Xml.ToString(), Resource = resourceUrl };
if(requestBody !=null)
      request.AddParameter("objCompositeType", requestBody);
request.AddFile("stream", image, "Array.png");    
var response = client.Execute(request);
string responseString;
if (response.StatusCode == HttpStatusCode.OK)
{
     responseString = HttpUtility.HtmlDecode(response.Content);
}
else
{
     responseString = response.StatusDescription + " --------------------" + HttpUtility.HtmlDecode(response.Content);
}

I am using a 3rd party tool RestSharp to post my request to the REST Service.

My request in fiddler looks as shown:

POST http://localhost/XMLService/Service1.svc/PostImage HTTP/1.1
Accept: application/json, application/xml, text/json, text/x-json, text/javascript, text/xml
User-Agent: RestSharp 102.0.0.0
Host: rajeshwin7
Content-Type: multipart/form-data; boundary=-----------------------------28947758029299
Content-Length: 2300
Accept-Encoding: gzip, deflate
Connection: Keep-Alive

-------------------------------28947758029299
Content-Disposition: form-data; name="stream"; filename="download.jpg"
Content-Type: application/octet-stream

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��U5)8��儞��8k��N�f����8�ʧu�S�M9��I�K8M�xY���������������j�EZӖ�[Y�O�ۓ(t�ޥH�W�K2�~�M�cn�����M_�����&�K��g������夳�l;��}%A�if�f��Q�MB{1�xofs�u�sX�qsW���T��)V���ʦ'��<���饎S���Y�t
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-------------------------------28947758029299--

And when i perform a POST of the above request i get the below response:

HTTP/1.1 200 OK
Cache-Control: private
Content-Length: 105
Content-Type: application/xml; charset=utf-8
Server: Microsoft-IIS/7.5
Set-Cookie: ASP.NET_SessionId=fdbg45tergdsfg434t; path=/; HttpOnly
X-AspNet-Version: 4.0.30319
X-Powered-By: ASP.NET
Date: Mon, 27 Feb 2012 12:05:32 GMT

<string xmlns="http://schemas.microsoft.com/2003/10/Serialization/">Recieved the image on server</string>