c# - Cookies dropped / lost on HttpWebRequest GetReponse -


occasionally program appeared fail on making http post. narrowed down cookie apparently being lost.

some investigation, narrowed down

httpwebresponse response = (httpwebresponse)http.getresponse();

strange thing is, doesn't happen time, typically when method first run, ok (after force re-addition of cookie.

i have seemingly hacked solution works case (but concerned break other cases, way hack solutions).

var cookiesprepull = cookies.getcookies(http.requesturi); httpwebresponse response = (httpwebresponse)http.getresponse(); foreach (cookie cookiepre in cookiesprepull) {     bool bexist = false;     foreach (cookie cookiepost in cookies.getcookies(http.requesturi))     {         if (cookiepre.name == cookiepost.name)         {             bexist = true;             break;         }     }     if (!bexist)     {         cookies.add(cookiepre);     } }

what trying understand why cookie dropped getresponse call. examining in fiddler, nothing mentioned cookie. cookie code set 2 cookies. 1 exists, 1 doesn't.

the cookie hasn't expired. @ complete loss on this

cheers

try using cookiecollection , cookiecontainer maintain cookies:

cookiecontainer container = new cookiecontainer(); cookiecollection cookies = new cookiecollection();  httpwebrequest request = (httpwebrequest)webrequest.create("http://somesite.com/login"); request.cookiecontainer = container;  httpwebresponse response = (httpwebresponse)request.getresponse(); cookies = response.cookies; // capture cookies response  request = (httpwebrequest)webrequest.create("http://somesite.com/profile"); request.cookiecontainer = container; request.cookiecontainer.add(cookies); // add cookies previous response new request  response = (httpwebresponse)request.getresponse(); cookies = response.cookies; // capture cookies response

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