SIPSorcery.SIP.SIPRequest.Copy C# (CSharp) Method

        public SIPRequest Copy()
        {
            return ParseSIPRequest(this.ToString());
        }

        private SIPRequest GetAuthenticatedRegistrationRequest(SIPRequest registerRequest, SIPResponse sipResponse)
        {
            try
            {
                SIPAuthorisationDigest authRequest = sipResponse.Header.AuthenticationHeader.SIPDigest;
                m_lastServerNonce = authRequest.Nonce;
                string username = (m_authUsername != null) ? m_authUsername : m_sipAccountAOR.User;
                authRequest.SetCredentials(username, m_password, registerRequest.URI.ToString(), SIPMethodsEnum.REGISTER.ToString());

                SIPRequest regRequest = registerRequest.Copy();
                regRequest.LocalSIPEndPoint = registerRequest.LocalSIPEndPoint;
                regRequest.Header.Vias.TopViaHeader.Branch = CallProperties.CreateBranchId();
                regRequest.Header.From.FromTag = CallProperties.CreateNewTag();
                regRequest.Header.To.ToTag = null;
                regRequest.Header.CSeq = ++m_cseq;

                regRequest.Header.AuthenticationHeader = new SIPAuthenticationHeader(authRequest);
                regRequest.Header.AuthenticationHeader.SIPDigest.Response = authRequest.Digest;

                //if (RequestSwitchboardToken)
                //{
                //    regRequest.Header.SwitchboardTokenRequest = m_expiry;
                //}

                return regRequest;
            }
            catch (Exception excp)
            {
                logger.Error("Exception GetAuthenticatedRegistrationRequest. " + excp.Message);
                throw excp;
            }
        }