.NET Cookie Parsing

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  • Mike C#
    #1

    .NET Cookie Parsing

    Is there a decent cookie parser out there somewhere? I keep running into
    cookies that .NET can't handle. I've also found a couple of other parsers
    but they're choking as well.


    Tags: None
    • Mike C#
      #2
      Re: .NET Cookie Parsing

      As I dig a little deeper into it, it appears that .NET is parsing the
      Set-Cookie header properly. The cookies are even split up properly in the
      private members deep down. But somehow they're getting *mangled* on their
      way back up when you try to actually access them. This doesn't make a lot
      of sense to me. Anyone had any experience with this? Hints, tips? Thanks.

      "Mike C#" <xyz@xyz.comwro te in message
      news:uG22b61nIH A.4292@TK2MSFTN GP04.phx.gbl...
      Is there a decent cookie parser out there somewhere? I keep running into
      cookies that .NET can't handle. I've also found a couple of other parsers
      but they're choking as well.
      >

        Comment

        • Patrice
          #3
          Re: .NET Cookie Parsing

          Do you have a bare bone repro for this ?

          I had this once in classic ASP if you put characters that are themselves
          used to separate cookies one from the other or to separate the cookie name
          and value. Encoding those values should fix the problem.

          --
          Patrice


          "Mike C#" <xyz@xyz.coma écrit dans le message de news:
          OJz9mL3nIHA.337 6@TK2MSFTNGP05. phx.gbl...
          As I dig a little deeper into it, it appears that .NET is parsing the
          Set-Cookie header properly. The cookies are even split up properly in the
          private members deep down. But somehow they're getting *mangled* on their
          way back up when you try to actually access them. This doesn't make a lot
          of sense to me. Anyone had any experience with this? Hints, tips?
          Thanks.
          >
          "Mike C#" <xyz@xyz.comwro te in message
          news:uG22b61nIH A.4292@TK2MSFTN GP04.phx.gbl...
          >Is there a decent cookie parser out there somewhere? I keep running into
          >cookies that .NET can't handle. I've also found a couple of other
          >parsers but they're choking as well.
          >>
          >
          >

            Comment

            • Mike C#
              #4
              Re: .NET Cookie Parsing

              I did some investigation, it turns out that the CookieCollectio n uses a
              too-simple string split function instead of actually attempting to "parse"
              the cookie. So any cookies that contain commas get mangled. I then tried
              to grab the data from the Set-Cookie header, but those values get mangled in
              a similar fashion. What's really annoying is that I can see the properly
              parsed values in Visual Studio, way down in the private members of the
              headers collection, but they're not exposed anywhere except in the Visual
              Studio watch window. I ended up creating my own better parser to handle it.
              The website I was playing around with was Expedia.com, BTW. I imagine there
              are probably a lot of other websites that use commas in cookies - they
              should fix the handling behaviour in .NET.

              "Patrice" <http://www..chez.com/scribe/wrote in message
              news:4809e3d4$0 $895$ba4acef3@n ews.orange.fr.. .
              Do you have a bare bone repro for this ?
              >
              I had this once in classic ASP if you put characters that are themselves
              used to separate cookies one from the other or to separate the cookie name
              and value. Encoding those values should fix the problem.
              >
              --
              Patrice
              >
              >
              "Mike C#" <xyz@xyz.coma écrit dans le message de news:
              OJz9mL3nIHA.337 6@TK2MSFTNGP05. phx.gbl...
              >As I dig a little deeper into it, it appears that .NET is parsing the
              >Set-Cookie header properly. The cookies are even split up properly in the
              >private members deep down. But somehow they're getting *mangled* on
              >their way back up when you try to actually access them. This doesn't
              >make a lot of sense to me. Anyone had any experience with this? Hints,
              >tips? Thanks.
              >>
              >"Mike C#" <xyz@xyz.comwro te in message
              >news:uG22b61nI HA.4292@TK2MSFT NGP04.phx.gbl.. .
              >>Is there a decent cookie parser out there somewhere? I keep running
              >>into cookies that .NET can't handle. I've also found a couple of other
              >>parsers but they're choking as well.
              >>>
              >>
              >>
              >
              >

                Comment

                • Bill Woodruff
                  #5
                  Re: .NET Cookie Parsing

                  Mike C# wrote :

                  "I ended up creating my own better parser to handle it."

                  Hi Mike,

                  I imagine there are many people, besides myself, who would really appreciate
                  a brief tutorial and your solution if you have the time, inclination, and
                  freedom from contractual constraint, that would allow you to post an article
                  on CodeProject or a similar venue, or share code.

                  thanks, Bill


                    Comment

                    • Mike C#
                      #6
                      Re: .NET Cookie Parsing

                      "Bill Woodruff" <billw@dotscien ce.comwrote in message
                      news:u5cjFKpoIH A.5096@TK2MSFTN GP02.phx.gbl...
                      Mike C# wrote :
                      >
                      "I ended up creating my own better parser to handle it."
                      >
                      Hi Mike,
                      >
                      I imagine there are many people, besides myself, who would really
                      appreciate
                      a brief tutorial and your solution if you have the time, inclination, and
                      freedom from contractual constraint, that would allow you to post an
                      article
                      on CodeProject or a similar venue, or share code.
                      >
                      This particular piece of code was part of a work for hire, so I can't post
                      it without permission. I'll discuss with the person I'm writing it for and
                      see if they're willing to allow it. If not, I may write another version of
                      the solution (time permitting) and post that. I really believe the absolute
                      best solution would be for the .NET team to fix the problem in the
                      Framework, but until then I guess we just have to make do with custom
                      parsing solutions :(


                        Comment

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