asp.net HTTPHandler prevents page from loading

问题

I have an ASP:NET web project with a simple HTTPHandler which filters out requests from outside IPs. The code itself works, but the HTTPHandler prevents my page from loading. No error. No infinite load. There's just a blank page.

If I remove the reference in the config, it loads perfectly fine. It's definitely caused by the HTTPHandler. I've also stepped through the handler and the code is definitely reached, it's just that when the handler is done, the page doesn't load like it should.

Here is the code.

public class SecurityHttpHandler : IHttpHandler
{
    public bool IsReusable
    {
        get { return false; }
    }

    public void ProcessRequest(HttpContext context)
    {
        string ipAddress = context.Request.UserHostAddress;
        if (!IsValidIpAddress(ipAddress))
        {
            context.Response.StatusCode = 403; 
        }
    }

    private bool IsValidIpAddress(string ipAddress)
    {
        return true; //for the time being, this will always return true
    }

    public void Dispose() {  } //clean
}

The handler exists in another project (i have a reference to the assembly) and the httphandler is registered in my webprojects web.config as such:

    <handlers>
        <add name="SecurityHttpHandler" verb="*" 
        path="*Default.aspx" 
        type="MyProjects.CommonResources.Web.SecurityHttpHandler" 
        resourceType="Unspecified" />
    </handlers>

I'm running IIS 7.5 in integrated mode. .net framework 4.0.

Let me know if I should add more code. I excluded the code from my web-project as the handler itself seems to be the cause early in the asp.net pipeline.

来源：https://stackoverflow.com/questions/27124737/asp-net-httphandler-prevents-page-from-loading

标签

ASP.NET

.net

iis

httphandler