What domain should I give this cookie?

I'm trying to call a web service from a c# application, with sessionID.

In order to do this I need to set the "Domain" header in a cookie.

In Fiddler it looks like - "ASP.NET_SessionId=izdtd4tbzczsa3nlt5ujrbf5" (no domain is specified in the cookie).

The web service is at - "http://[some ip goes here]:8989/MyAPI.asmx".

I've tried:

http://[ip] ,

http://[ip]:8989 ,

http://[ip]:8989/MyAPI.asmx

All of these cause runtime error.

I've also tried the ip alone (i.e. 100.10.10.10) , which doesn't cause a runtime error, and sets the cookie, but the cookie is never sent when I invoke a web method.

Here's my code for setting the domain:

if (!string.IsNullOrEmpty(currentSessionID))
{
   req.CookieContainer=new CookieContainer();
   Cookie cookie = new Cookie("ASP.NET_SessionId", currentSessionID);
   cookie.Domain = GetCookieUrl();  //<- What should this be?
   req.CookieContainer.Add(cookie);
}

So what should the domain be?

Thanks.开发者_运维技巧

I believe it should simply be [ip]. Drop the http:// part of what you've tried.

According to this page on MSDN, your code should be

cookie.Domain = "100.10.10.10";

Next, exactly what error are you getting? Also, are you confusing a Compile error with a Runtime error? I find it hard to believe you are getting a compilation error as Domain is a String property which means you can put pretty much anything into it.

Finally, why are you sending a cookie to a web service? The normal way is to pass everything in the form post or on the query string.

Update

BTW, if you absolutely must add a cookie to the header in order to pass it to a web service, the way you do this is (taken from here):

byte[] buffer = Encoding.ASCII.GetBytes("fareId=123456"); //the data you want to send to the web service
HttpWebRequest WebReq = (HttpWebRequest)WebRequest.Create(url);
WebReq.Method = "POST";
WebReq.ContentType = "application/x-www-form-urlencoded";
WebReq.ContentLength = buffer.Length;
WebReq.Headers["Cookie"] = "ASP.NET_SessionId=izdtd4tbzczsa3nlt5ujrbf5"

Stream PostData = WebReq.GetRequestStream();

Note that this sets the header inline with the request without instantiating a "cookie" object. The Domain property of a cookie is to help ensure the cookie is only sent to the domain listed. However, if you are initiating the request and trying to append a cookie to it, then the best way is to just add it as a string to the request headers.

The reason the cookie was not sent is that the request's content length should be set after adding the cookie, and not before.
The domain is the ip alone.

// Simple function to get cookie domain
private string GetCookieDomain(string uri)
{
    Uri req_uri = new Uri(uri);
    return req_uri.GetComponents(UriComponents.Host, UriFormat.Unescaped);
}