CgwMonitorManage.T28181.SipSDKInterface.SIP_SDK_INVITE C# (CSharp) Method

        public static extern EM_SIP_RESULT SIP_SDK_INVITE(string pAccount, string pSdpBody, ref int iResponseID, StringBuilder strRemoteBody);

        /// <summary>
        /// 该函数用于发送SIP Invite消息
        /// </summary>
        /// <param name="pAccount">对方账号</param>
        /// <param name="pSdpBody">SDP描述字符串</param>
        public EM_SIP_RESULT SIP_SDK_INVITE(string pAccount, string pSdpBody, ref int iResponseID, StringBuilder strRemoteBody)
        {
            NLogEx.LoggerEx logEx = new NLogEx.LoggerEx(log);
            logEx.Trace("Enter: SipStackAdapter.SIP_SDK_INVITE().");
            iResponseID = 0;
            EM_SIP_RESULT iRet = EM_SIP_RESULT.RET_FAILURE;

            try
            {
                iRet = SipSDKInterface.SIP_SDK_INVITE(pAccount, pSdpBody, ref iResponseID, strRemoteBody);
                SIP_SDK_ACK(iResponseID);
                if (iRet != EM_SIP_RESULT.RET_SUCCESS)
                {
                    logEx.Error("SipStackAdapter.SIP_SDK_INVITE ,pSdpBody:{0}", pSdpBody);
                }
                else
                {
                    logEx.Info("SipStackAdapter.SIP_SDK_INVITE ,iResponseID={0}", iResponseID);
                }
            }
            catch (System.Exception ex)
            {
                logEx.Error("SipStackAdapter.SIP_SDK_INVITE ,Exception:{0}", ex.ToString());
                iRet = EM_SIP_RESULT.RET_FAILURE;
            }
            return(iRet);
        }