CODEWITHSUNDEEP
c#.netwebrequest
user2632193
user2632193

Reputation: 11

Is there another solution to WebResponse 403 error?

There are many posts on WebResponse 403 error but my situation is a little different. I have created a console application that will run as a task on my server. The console application passes user emails in WebRequest and waits for WebResponse to receive the uri with the returning parameters. The code below worked perfectly a few days ago but one of the other programmers added a new parameter for a return web address. I know for a fact that this is causing the 403 error because if I paste the uri in IE with new parameter it works. But since I have a console application a return web address is something I cannot do, at least I don't think so.

Unfortunately the programmer said that he cannot change it back and said that there is a way to receive the uri or the entire page content and I can process it that way. I still have no clue what he was talking about because StreamReader requires a WebResponse and pretty much all other solutions I could think of.

Even though I get a 403 error the response still has the uri with the parameters I need because I can see it in IE in the web address. So all I need is the response uri. I would appreciate any help you have to offer. Below is the method giving me problems.

String employeeInfo = "";
try
{
    HttpWebRequest request = (HttpWebRequest)WebRequest
        .Create("http://example.com/subsub.aspx?instprod=xxx&vabid=emailaddress");
    using (HttpWebResponse webResponse = 
        (HttpWebResponse)request.GetResponse()) //Error occurs here. 403 Forbidden
    {
        Uri myUri = new Uri(webResponse.ResponseUri.ToString());
        String queryParamerter = myUri.Query;
        employeeInfo = HttpUtility.ParseQueryString(queryParamerter).Get("vres");
        if (employeeInfo != "N/A")
        {
            return employeeInfo;
        }
        else
        {
            employeeInfo = "0";
            return employeeInfo;
        }
    }
}
catch (WebException)
{
    employeeInfo = "0";
    return employeeInfo;
}

Upvotes: 0

Views: 1082

Answers (1)

mason
mason

Reputation: 32701

Let's follow Jim Mischel's idea. We'll handle the WebException and use the Response property of the exception.

String employeeInfo = "";
try
{
    HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://example.com/subsub.aspx?instprod=xxx&vabid=emailaddress");
    using (HttpWebResponse webResponse = (HttpWebResponse)request.GetResponse()) //Error occurs here. 403 Forbidden
    {
        Uri myUri = new Uri(webResponse.ResponseUri.ToString());
        String queryParamerter = myUri.Query;
        employeeInfo = HttpUtility.ParseQueryString(queryParamerter).Get("vres");
        if (employeeInfo != "N/A")
        {
            return employeeInfo;
        }
        else
        {
            employeeInfo = "0";
            return employeeInfo;
        }
    }
}
catch (WebException ex)
{
    HttpWebResponse response = ex.Response as HttpWebResponse;
    if(response.StatusCode != HttpStatusCode.Forbidden)
    {
        throw;
    }
    Uri myUri = new Uri(response.ResponseUri.ToString());
    String queryParamerter = myUri.Query;
    employeeInfo = HttpUtility.ParseQueryString(queryParamerter).Get("vres");
    if (employeeInfo != "N/A")
    {
        return employeeInfo;
    }
    else
    {
        employeeInfo = "0";
        return employeeInfo;
    }  
}

Upvotes: 2

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