.net - SignalR Hub client - bypass cloudflare with ClearanceDelegate -


i trying bypass cloudflare check implemented on bittrex.com signalr hub endpoint.

i using utility create clearencedelegate: https://github.com/elcattivo/cloudflareutilities

this working regular httprequestmessages, trying hub connect.

i have attached _cfduid , cf_clearance cookies, , added user-agent header identical initial request, though still cant connect... same 503 if had done nothing.

is there possibly way force hubconnection obj use initial httpclient or handler?

        var handler = new clearancehandler();         var client = new httpclient(handler);         var hubconnection = new hubconnection("https://www.bittrex.com/");          try         {              httprequestmessage msg = new httprequestmessage()             {                 requesturi = new uri("https://www.bittrex.com/"),                 method = httpmethod.get             };               httpresponsemessage response = await client.sendasync(msg);             if (response.issuccessstatuscode)             {                 console.writeline("success");             }                ienumerable<string> heads;             if (msg.headers.trygetvalues("user-agent", out heads))             {                 foreach (string s in heads)                 {                     console.writeline(s);                     //outputs: "client/1.0"                      //add user-agent header hubconnection                     hubconnection.headers.add("user-agent", s);                 }             }               hubconnection.cookiecontainer = new cookiecontainer();             ienumerable<string> cookies;              //set "_cfduid" , "cf_clearance" cookies recieved on hubconnection             if (response.headers.trygetvalues("set-cookie", out cookies))             {                 foreach (var c in cookies)                 {                     uri target = new uri("https://www.bittrex.com/");                     hubconnection.cookiecontainer.setcookies(target, c);                 }             }           }         catch (aggregateexception ex) when (ex.innerexception cloudflareclearanceexception)         {             console.writeline(ex.innerexception.message);         }           console.writeline("connecting");             //try connect hub attached cookies , user-agent header:         await hubconnection.start();          btrexhubproxy.on<marketdataupdate>("updateexchangestate", update =>          btrexrobot.updateenqueue(update));         //btrexhubproxy.on<summariesupdate>("updatesummarystate", update =>  console.writeline("full summary: "));         btrexhubproxy = hubconnection.createhubproxy("corehub");


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