WCF + Ajax, Access-Control-Allow-Origin

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I have problem with ajax query, i try make post query for wcf service and this don't work.
I got next error in my browser:
xmlhttprequest cannot load "myUrl" request header field is not allowed by access-control-allow-headers
Here my project (on github)

My Service, have next code in global.asax

C#

protected void Application_BeginRequest(object sender, EventArgs e)
    {

        EnableCrossDomainAjaxCall();
    }

    private void EnableCrossDomainAjaxCall()
    {
        HttpContext.Current.Response.AddHeader("Access-Control-Allow-Origin", "*");

        if (HttpContext.Current.Request.HttpMethod == "OPTIONS")
        {
            HttpContext.Current.Response.AddHeader("Access-Control-Allow-Methods", "GET, POST");
            HttpContext.Current.Response.AddHeader("Access-Control-Allow-Headers", "Content-Type, Accept");
            HttpContext.Current.Response.AddHeader("Access-Control-Max-Age", "1728000");
            HttpContext.Current.Response.End();
        }
    }

Service contract

C#

[ServiceContract]
public interface IService1
{
    [OperationContract()]
    [WebInvoke(Method = "GET", UriTemplate = "/GetTestData", ResponseFormat = WebMessageFormat.Json, RequestFormat = WebMessageFormat.Json)]
    List<Data.Test> GetTestData();

    [OperationContract]
    [WebInvoke(Method = "POST", ResponseFormat = WebMessageFormat.Json, RequestFormat = WebMessageFormat.Json)]
    void AddTestData(Data.Test value);
}

And svc code

C#

[AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
public class Service1 : IService1
{
    //static data for test
    private static List<Data.Test> _data = new List<Data.Test>() { new Data.Test() { ID = 0, Name = "a" }, new Data.Test() { ID = 1, Name = "B" } };
    public List<Data.Test> GetTestData()
    {
        return _data;
    }

    public void AddTestData(Data.Test value)
    {
        _data.Add(value);
    }
}

and my query

JavaScript

function SendData() {
    var Json = { 'id': $("#id").val(), 'name': $("#name").val() };
    $.ajax({
        type: "Post",
        url: "http://localhost:10468/Service1.svc/AddTestData",
        data: JSON.stringify(Json), 
        contentType: "application/json;charset-uf8", 
        dataType: "json", 
        success: function (msg) {
        },
        error: function (err) {
        }
    });
}

I don't knowe whay it's not working. Help me please.
P.S. Sorry for my english.

Posted 1-Oct-14 11:14am

Владимир Ротарь

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4 solutions

Solution 1

Enable CORS on your WCF service in IIS.

For IIS 7

http://enable-cors.org/server_iis7.html[http://enable-cors.org/server_iis7.html[^]]

for IIS 6

http://enable-cors.org/server_iis6.html[http://enable-cors.org/server_iis6.html[^]]

Posted 1-Oct-14 13:58pm

virang_21

Solution 2

I have this config in my service project.
My config:

XML

<configuration>

  <system.web>
    <compilation debug="true" strict="false" explicit="true" targetframework="4.0" />
    <customerrors mode="Off" />
  </system.web>
  <system.servicemodel>
    <bindings>
      <webhttpbinding>
        <binding name="CORSWebHttpBinding" crossdomainscriptaccessenabled="True" maxreceivedmessagesize="2147483647" maxbuffersize="2147483647">
          <readerquotas maxdepth="32" maxstringcontentlength="2147483647" maxarraylength="2147483647" maxbytesperread="2147483647" maxnametablecharcount="2147483647" />
          <security mode="None">
            <transport clientcredentialtype="None" />
          </security>
        </binding>
      </webhttpbinding>
    </bindings>
    <services>
      <service name="WcfServiceHost.Service1" behaviorconfiguration="CORSServiceBehavior">
        <endpoint address="" binding="webHttpBinding" bindingconfiguration="CORSWebHttpBinding" behaviorconfiguration="EndpBehavior" contract="WcfServiceHost.IService1" />
      </service>
    </services>
    <behaviors>
      <servicebehaviors>
        <behavior name="CORSServiceBehavior">
          <servicemetadata httpgetenabled="true" />
          <servicedebug includeexceptiondetailinfaults="true" />
        </behavior>
      </servicebehaviors>
      <endpointbehaviors>
        <behavior name="EndpBehavior">
          <webhttp />
        </behavior>
      </endpointbehaviors>
    </behaviors>
    <servicehostingenvironment multiplesitebindingsenabled="true" />
    <standardendpoints>
      <webscriptendpoint>
        <standardendpoint name="" crossdomainscriptaccessenabled="true" />
      </webscriptendpoint>
    </standardendpoints>
  </system.servicemodel>
  <system.webserver>
    <httpprotocol>
      <customheaders>
        <add name="Access-Control-Allow-Origin" value="*" />
        <add name="Access-Control-Allow-Headers" value="Content-Type" />
        <add name="Access-Control-Allow-Methods" value="POST,GET,OPTIONS" />
        <add name="Access-Control-Max-Age" value="1728000" />
      </customheaders>
    </httpprotocol>
    <modules runallmanagedmodulesforallrequests="true" />
  </system.webserver>

</configuration>

Posted 1-Oct-14 21:35pm

Владимир Ротарь

Solution 3

I find problem, this error only in chrome, ie work fine. How do it in chrome?

Posted 2-Oct-14 0:45am

Владимир Ротарь

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Владимир Ротарь · Accepted Answer · 2014-10-02T01:03:00

I fix this problem.
Need add this parameters ("Origin, X-Requested-With, Content-Type, Accept") in "Access-Control-Allow-Headers"

C#

protected void Application_BeginRequest(object sender, EventArgs e)
        {
            
            EnableCrossDomainAjaxCall();
        }

        private void EnableCrossDomainAjaxCall()
        {
            HttpContext.Current.Response.AddHeader("Access-Control-Allow-Origin", "*");

            if (HttpContext.Current.Request.HttpMethod == "OPTIONS")
            {
                HttpContext.Current.Response.AddHeader("Access-Control-Allow-Methods", "GET, POST");
                HttpContext.Current.Response.AddHeader("Access-Control-Allow-Credentials", "true");
                HttpContext.Current.Response.AddHeader("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");
                HttpContext.Current.Response.AddHeader("Access-Control-Max-Age", "1728000");
                HttpContext.Current.Response.End();
            }
        }