HI,
It been 2 days i am trying to deploy a web service in IIS on windows 10. My requirements was to call the web service from Javascript in another domain so i need to use JSONP. I downloaded a sample code from internet and then completed by development with
Web Services running in one Visual Studio development environment and web application in another. I am using Visual Studio 2015 and the web service project i downloaded, i open it as web project and it work OK. one thing that was in the web services as
a special Module class that was needed to make sure that JSONP is working when a call comes in.
Now i want to configure it in IIS on windows 10. I did the simple steps and created a website and point it to my directory. Now my javascript code in web site cannot make connection with web service running in IIS
I suspect this is something to do with Module that handles JSONP. I am dying now to get it working by tomorrow so a immediate help will be highly appreciated.
Here is my web.config file
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<appSettings />
<connectionStrings />
<system.web>
<compilation debug="true" defaultLanguage="c#">
<assemblies>
<add assembly="System.Core, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
<add assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
</assemblies>
</compilation>
</system.web>
<system.codedom>
<compilers>
<compiler language="c#;cs;csharp" extension=".cs" warningLevel="4" type="Microsoft.CSharp.CSharpCodeProvider, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
<providerOption name="CompilerVersion" value="v3.5" />
<providerOption name="WarnAsError" value="false" />
</compiler>
</compilers>
</system.codedom>
<system.webServer>
<httpErrors errorMode="Detailed" />
<asp scriptErrorSentToBrowser="true" />
<validation validateIntegratedModeConfiguration="false" />
<modules>
<remove name="ScriptModule" />
<add name="JSONPModule" type="JsonpHttpModule, App_Code" />
</modules>
<handlers>
<add name="ScriptHandlerFactory" verb="*" path="*.asmx" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
</handlers>
</system.webServer>
</configuration>
Here is my IHTTPHandler code file and my web service had only one web method
using System;
using System.Web;
using System.IO;
using System.Text;
public class JsonpHttpModule : IHttpModule
{
private const string JSON_CONTENT_TYPE = "application/json; charset=utf-8";
#region IHttpModule Members
public void Dispose()
{
}
public void Init(HttpApplication app)
{
app.BeginRequest += OnBeginRequest;
app.ReleaseRequestState += OnReleaseRequestState;
}
#endregion
bool _Apply(HttpRequest request)
{
if (!request.Url.AbsolutePath.Contains(".asmx")) return false;
if ("json" != request.QueryString.Get("format")) return false;
return true;
}
public void OnBeginRequest(object sender, EventArgs e)
{
HttpApplication app = (HttpApplication)sender;
if (!_Apply(app.Context.Request)) return;
if (string.IsNullOrEmpty(app.Context.Request.ContentType))
{
app.Context.Request.ContentType = JSON_CONTENT_TYPE;
}
}
public void OnReleaseRequestState(object sender, EventArgs e)
{
HttpApplication app = (HttpApplication)sender;
if (!_Apply(app.Context.Request)) return;
app.Context.Response.Filter = new JsonResponseFilter(app.Context.Response.Filter, app.Context);
}
}
public class JsonResponseFilter : Stream
{
private readonly Stream _responseStream;
private HttpContext _context;
public JsonResponseFilter(Stream responseStream, HttpContext context)
{
_responseStream = responseStream;
_context = context;
}
public override bool CanRead { get { return true; } }
public override bool CanSeek { get { return true; } }
public override bool CanWrite { get { return true; } }
public override long Length { get { return 0; } }
public override long Position { get; set; }
public override void Write(byte[] buffer, int offset, int count)
{
var b1 = Encoding.UTF8.GetBytes(_context.Request.Params["callback"] + "(");
_responseStream.Write(b1, 0, b1.Length);
_responseStream.Write(buffer, offset, count);
var b2 = Encoding.UTF8.GetBytes(");");
_responseStream.Write(b2, 0, b2.Length);
}
public override void Close()
{
_responseStream.Close();
}
public override void Flush()
{
_responseStream.Flush();
}
public override long Seek(long offset, SeekOrigin origin)
{
return _responseStream.Seek(offset, origin);
}
public override void SetLength(long length)
{
_responseStream.SetLength(length);
}
public override int Read(byte[] buffer, int offset, int count)
{
return _responseStream.Read(buffer, offset, count);
}
}
Shahzad