HttpWebRequest does not escape uri

04-28-2008 12:58 PM |

Take an escaped (url encoded) uri, pass it into System.Uri.

It gets unescaped, and this seems normal .NET behavior. But HttpWebRequest actually will try to fetch the unescpaed uri (which won't work correctly in this case and many others.)

A temporary workaround is to double UrlEncode the uri before passing it to System.Uri. But I think this must indicate a bug in HttpWebRequest.

Re: HttpWebRequest does not escape uri

04-30-2008 1:57 AM |

Hi:

  Have you tried this overload method to initialize the uri?

Uri(string uriString,bool dontEscape)

Regards

Re: HttpWebRequest does not escape uri

05-23-2008 3:25 PM |

Allen,

You suggested an overload that isn' t in the SL2 System.Uri class.  In .Net, that API is no obsoled: http://msdn.microsoft.com/en-us/library/9zh9wcb3.aspx

I have run into this problem as well as the web service that I am working with expects escaped information in the URI.

Michael

Re: HttpWebRequest does not escape uri

06-04-2008 11:53 AM |

This really drives me crazy. I have to pass some variables in the querystring and it’s not working every time, even if I double escape the values.
Is there a solution?

Re: HttpWebRequest does not escape uri

11-19-2008 12:48 PM |

 Was a solution ever found for this?  I have bumped into a similar issue.

Re: HttpWebRequest does not escape uri

11-19-2008 12:54 PM |

double-encoding or triple-encoding was my solution.

Michael

Re: HttpWebRequest does not escape uri

11-20-2008 2:25 AM |

My solution was more a workaround, sending the parameters in a xml string with the request.

        Dim _Page As Page = App.Current.RootVisual

        Dim _Request As New HttpHelper(_Page.GetApplicationURL & "Test.aspx", Me.Dispatcher)
        _Request.Method = "POST"
        _Request.ContentType = "text/xml"

        _Request.RequestText = "<?xml version='1.0'?>" & _
          "<Daten>" & _
          "<ID>" + ReplaceSign(Path) + "</ID>" & _
          "</Daten>"

        AddHandler _Request.RequestReady, AddressOf Me.TestCallBack
        _Request.Execute()

     Private Function ReplaceSign(ByVal FeldWert As String) As String
        FeldWert = FeldWert.Replace("&", "&amp;")
        FeldWert = FeldWert.Replace("<", "&lt;")
        FeldWert = FeldWert.Replace(">", "&gt;")

        Return FeldWert
    End Function

 On the server I read the input with this code:

        Dim objXML As XmlDocument = New XmlDocument()
        objXML.Load(Request.InputStream)

        Response.write(objXML.SelectSingleNode("Daten/ID").InnerText)

Re: HttpWebRequest does not escape uri

11-24-2008 1:41 PM |

I'm not able to reproduce this issue, and the fact that so many of you seem to be hitting this is making me wonder if I understand the problem to begin with.

I tried issuing a GET to each of the following URLs using HttpWebRequest (I was testing eith IE7 on Vista, using SL2.0 RTW bits):

• http://foo.com/vijay/devatha/buffer%20test.aspx
• http://foo.com/vijay/devatha/te%20st.txt?foo.com=%3dboobar

In each case, I found that the Uris were sent across the wire as-is; i.e., HttpWebRequest does no encoding/decoding/mangling of any kind. "%3d" was sent as "%3d", not as "=". Is that not what you're seeing or expecting?

Thanks!