public CFeService(string authTaxid, string authToken, string mfeSerieNumber, string pathToSaveCFeXML) { CFeDictionary = new Dictionary <string, string>(); MFeSerialNumber = mfeSerieNumber; PathToSaveCFeXmls = pathToSaveCFeXML; ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12; AuthToken = authToken; HttpRequest = new HttpRequest(); HttpRequest.AppendHeader("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36"); HttpRequest.AppendHeader("X-AUTHENTICATION-TAXID", authTaxid); HttpRequest.AppendHeader("X-AUTHENTICATION-TOKEN", AuthToken); HttpRequest.AppendHeader("Origin", "http://cfe.sefaz.ce.gov.br"); HttpRequest.AppendHeader("Referer", "http://cfe.sefaz.ce.gov.br/mfe/portal"); HttpRequest.AppendHeader("DNT", "1"); }