c# - Collecting cookies that are not set by HttpWebResponse -


i need scrape table of info site have valid credentials because owners of site not provide api.

i performed login , saved traffic fiddler, , trying replicate key steps.
i'm going show steps i've done far, , stuck.

log base url

cookiecontainer jar = new cookiecontainer(); request = (httpwebrequest)webrequest.create(urlbase); request.cookiecontainer = jar; httpwebresponse response = (httpwebresponse)request.getresponse(); newurl = response.responseuri.tostring();

along return cookie set. when @ cookiecontainer has count of 1 after call.
interestingly response object not contain cookie - think okay because can use jar.

2nd call

i'm not yet @ page name , password presented, doesn't happen until 4th call. 

httpwebrequest request = (httpwebrequest)webrequest.create(urlbase +  secondcallfolderaddition);  cookiecollection bakery = new cookiecollection();  request.keepalive = true; request.headers.add("upgrade-insecure-requests", @"1"); //request.useragent = "mozilla/5.0 (windows nt 6.1; wow64) applewebkit/537.36 (khtml, gecko) chrome/59.0.3071.115 safari/537.36 opr/46.0.2597.57"; request.accept = "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp, image/apng,*/*;q=0.8"; request.headers.set(httprequestheader.acceptencoding, "gzip, deflate, br"); request.headers.set(httprequestheader.acceptlanguage, "en-us,en;q=0.8"); httpwebresponse response = (httpwebresponse)request.getresponse(); string newurl = response.responseuri.tostring();

i ok status, , response looks compared original fiddler traffic capture. in original 2nd call not set cookie, , no cookie set here.

third call

but here's lost: browser sent cookie data 3 values (i've obfuscated):

__utma=1.123456789.123456789.123456789.123456789.1 olfsk=olfsk12345678901234567890123456789 hblid=abcdl11abcabxabc1aabv1flfx1re1os

i don't know values set. seem relate google analytics (from articles i've found) don't know how collect them can attach them call make.

httpwebrequest request = (httpwebrequest)webrequest.create(newurl);  request.keepalive = true; request.headers.add("upgrade-insecure-requests", "1"); request.useragent = "mozilla/5.0 (windows nt 6.1; wow64) applewebkit/537.36 (khtml, gecko) chrome/59.0.3071.115 safari/537.36 opr/46.0.2597.57"; request.accept = "text/html,application/xhtml+xml,application/xml;  q=0.9,image/webp,image/apng,*/*;q=0.8";  request.headers.set(httprequestheader.acceptencoding, "gzip, deflate, br"); request.headers.set(httprequestheader.acceptlanguage, "en-us,en;q=0.8");  ///request.headers.set(httprequestheader.cookie,  @"__utma=1.123456789.123456789.123456789.123456789.1;  olfsk=olfsk12345678901234567890123456789;  hblid=abcdl11abcabxabc1aabv1flfx1re1os");  httpwebresponse response = (httpwebresponse)request.getresponse();  string newurl = response.responseuri.tostring();

please note commented out line cookie data - i've tried line un-commented also.

what happens i never response call.

i appreciative of insights.
guessing cookie data in third call needed, , is set client-side script gets collected between 2nd , 3rd call - new , unsure.
- if set on client side, how can valid cookies me past roadblock. (these roadblock coming in next call, more cookies used not see set in server response - not there yet.)

i know can solve using webbrowser object, seems clumsy solution. there less clumsy way go? there other objects or libraries should try? (restsharp? postman? webrequest object instead of httpwerequest?)


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