示例#1
0
void OpenTxSimulator::stop()
{
  StopMainThread();
#if defined(CPUARM)  
  StopAudioThread();
#endif
  StopEepromThread();
}
示例#2
0
文件: tcsip.cpp 项目: sipper123/sip2
//////////////////////////////////////////////////////
//This fucntion implements the state transitions for
//SIP messages coming from the network.
int ProcessSipMsg(UCHAR* rxStr, char* result)
{
  if (!(rxStr && result)) return -1;
  memset(result, 0, MAX_STR_LEN);

  int  msgType = 0;
  char* msg = (char*)rxStr;
  char msgExtra[MAX_STR_LEN]={0};
  msgType = GetSockMsgType(msg, msgExtra);
  if (msgType < 0)
  {
    //Some non SIP message arrived here. Ignore.
    return -1;
  }

  /* change the mode only if it is none; otherwise leave it as it is */
  if (g_sip_mode==SIP_NONE && msgType==MSG_INVITE)
      g_sip_mode =SIP_SERVER;

  /* client */
  if (g_sip_mode == SIP_CLIENT)
  {
    if (g_sip_state==SIP_IDLE)
    {
      printf("Invalid condition in the state machine!\n");
      return -1;
      /*
      if (msgType==MSG_INVITE)
      {
      } 
      else if (msgType==MSG_BYE)
      {
      } 
      else if (msgType==MSG_ACK)
      {
      } 
      else if (msgType==MSG_RESPONSE)
      {
      } 
      */
    }
    else if (g_sip_state==SIP_CONX_PENDING)
    {
      if (msgType==MSG_INVITE)
      {
        //486 busy
        sprintf((char*)g_txBuffer, RESPONSE_MSG, 486, "Busy", g_SessionData.remoteRestHdr, "\0");
        int c_len = strlen((char*)g_txBuffer);
        c_len--;
        oSocSIP.SendTo(g_txBuffer, &c_len);
      } 
      else if (msgType==MSG_BYE)
      {
        printf("Invalid condition in the state machine!\n");
        return -1;
      } 
      else if (msgType==MSG_ACK)
      {
        printf("Invalid condition in the state machine!\n");
        return -1;
      } 
      else if (msgType==MSG_RESPONSE)
      {
        int code = atoi(msgExtra);
        switch (code/100)
        {
          case 1://1xx message
            strcpy(result, msgExtra);
            return 0;
          case 2:
            {
              sprintf((char*)g_txBuffer, ACK_HDR, g_SessionData.ToAdrs, g_SessionData.MyHost, SIP_PORT, 
                                           g_SessionData.From, g_SessionData.FromAdrs, g_SessionData.To, g_SessionData.ToAdrs, 
                                           g_SessionData.CallID, ++g_sip_seq);
              int c_len = strlen((char*)g_txBuffer);
              oSocSIP.SendTo(g_txBuffer, &c_len);
              g_sip_state = SIP_CONNECTED;
              if (oSocRTP.Initialize(g_SessionData.RemoteHost, RTP_PORT, RTP_PORT) < 0)
              {
                strcpy(result, "Error initializing RTP socket..");
                g_sip_done = true; 
                return -1;
              }
              //g_run_rtp = true;
              StartAudioThread();
          
              strcpy(result, "Remote user has accepted your invite. Starting voice session....");
            }
            break;
          case 3:
            strcpy(result, msgExtra);
            return 0;
          case 4:
            strcpy(result, msgExtra);
            ClearSessionData();
            oSocSIP.ClearRemoteInfo();
            g_sip_state = SIP_IDLE;
            g_sip_mode  = SIP_NONE;
            return -1;
          case 5:
            strcpy(result, msgExtra);
            return 0;
          case 6:
            strcpy(result, msgExtra);
            ClearSessionData();
            oSocSIP.ClearRemoteInfo();
            g_sip_state = SIP_IDLE;
            g_sip_mode  = SIP_NONE;
            return -1;
          default:
            break;
        }
      } 
    }
    else if (g_sip_state==SIP_CONNECTED)
    {
      if (msgType==MSG_INVITE)
      {
        sprintf((char*)g_txBuffer, RESPONSE_MSG, 486, "Busy", g_SessionData.remoteRestHdr, "\0");
        int c_len = strlen((char*)g_txBuffer);
        c_len--;
        oSocSIP.SendTo(g_txBuffer, &c_len);
      } 
      else if (msgType==MSG_BYE)
      {
        //g_run_rtp = false;
        sprintf((char*)g_txBuffer, RESPONSE_MSG, 200, "OK", g_SessionData.remoteRestHdr, g_SessionData.remoteRestBdy);
        int c_len = strlen((char*)g_txBuffer);
        oSocSIP.SendTo(g_txBuffer, &c_len);

        StopAudioThread();

        oSocSIP.ClearRemoteInfo();
        ClearSessionData();
        g_sip_state = SIP_IDLE;
        g_sip_mode  = SIP_NONE;
        strcpy(result, "Remote party says BYE. Closing connection..");
      } 
      else if (msgType==MSG_ACK)
      {
        printf("Invalid state\n"); return -1;
      } 
      else if (msgType==MSG_RESPONSE)
      {
        int code = atoi(msgExtra);
        switch (code/100)
        {
          case 1://1xx message
            strcpy(result, msgExtra);
            return 0;
          case 2:
            {
              //Nothing..
            }
            break;
          case 3:
            strcpy(result, msgExtra);
            return 0;
          case 4:
            strcpy(result, msgExtra);
            ClearSessionData();
            oSocSIP.ClearRemoteInfo();
            g_sip_state = SIP_IDLE;
            g_sip_mode  = SIP_NONE;
            return -1;
          case 5:
            strcpy(result, msgExtra);
            return 0;
          case 6:
            strcpy(result, msgExtra);
            ClearSessionData();
            oSocSIP.ClearRemoteInfo();
            g_sip_state = SIP_IDLE;
            g_sip_mode  = SIP_NONE;
            return -1;
          default:
            break;
        }
      } 
    }
    else if (g_sip_state==SIP_DISCONX_PENDING)
    {
      if (msgType==MSG_INVITE)
      {
        sprintf((char*)g_txBuffer, RESPONSE_MSG, 486, "Busy", g_SessionData.remoteRestHdr, "\0");
        int c_len = strlen((char*)g_txBuffer);
        c_len--;
        oSocSIP.SendTo(g_txBuffer, &c_len);
      } 
      else if (msgType==MSG_BYE)
      {
        //g_run_rtp = false;
        //g_au_started= true;
        sprintf((char*)g_txBuffer, RESPONSE_MSG, 200, "OK", g_SessionData.remoteRestHdr, g_SessionData.remoteRestBdy);
        int c_len = strlen((char*)g_txBuffer);
        oSocSIP.SendTo(g_txBuffer, &c_len);

        StopAudioThread();

        oSocSIP.ClearRemoteInfo();
        ClearSessionData();
        g_sip_state = SIP_IDLE;
        g_sip_mode  = SIP_NONE;
        strcpy(result, "Remote party says BYE. Closing connection..");
      } 
      else if (msgType==MSG_ACK)
      {
        printf("Invalid state\n"); return -1;
      } 
      else if (msgType==MSG_RESPONSE)
      {
        int code = atoi(msgExtra);
        switch (code/100)
        {
          case 1://1xx message
            strcpy(result, msgExtra);
            return 0;
          case 2:
            {
              oSocSIP.ClearRemoteInfo();
              ClearSessionData();
              g_sip_state = SIP_IDLE;
              g_sip_mode  = SIP_NONE;
            }
            break;
          case 3:
            strcpy(result, msgExtra);
            return 0;
          case 4:
            strcpy(result, msgExtra);
            ClearSessionData();
            oSocSIP.ClearRemoteInfo();
            g_sip_state = SIP_IDLE;
            g_sip_mode  = SIP_NONE;
            return -1;
          case 5:
            strcpy(result, msgExtra);
            return 0;
          case 6:
            strcpy(result, msgExtra);
            ClearSessionData();
            oSocSIP.ClearRemoteInfo();
            g_sip_state = SIP_IDLE;
            g_sip_mode  = SIP_NONE;
            return -1;
          default:
            break;
        }
      } 
    }
  }
  else
  /* server */
  if (g_sip_mode == SIP_SERVER)
  {
    if (g_sip_state==SIP_IDLE)
    {
      if (msgType==MSG_INVITE)
      {
        CopySessionData(rxStr);
        oSocSIP.SetRemoteInfo(g_SessionData.RemoteHost, SIP_PORT );

        sprintf((char*)g_txBuffer, RESPONSE_MSG, 180, "Ringing", g_SessionData.remoteRestHdr, "\0");
        int c_len = strlen((char*)g_txBuffer);
        c_len--;
        oSocSIP.SendTo(g_txBuffer, &c_len);
        printf("You have got an incoming call from %s. Do you want to accept? [accept/reject]", g_SessionData.RemoteHost);fflush(stdout);
        g_sip_state = SIP_CONX_PENDING;
        return 0;
      } 
      else if (msgType==MSG_BYE)
      {
        //invalid...
      } 
      else if (msgType==MSG_ACK)
      {
        //invalid..
      } 
      else if (msgType==MSG_RESPONSE)
      {
        //invalid..
      } 
    }
    else if (g_sip_state==SIP_CONX_PENDING)
    {
      if (msgType==MSG_INVITE)
      {
        sprintf((char*)g_txBuffer, RESPONSE_MSG, 486, "Busy", g_SessionData.remoteRestHdr, "\0");
        int c_len = strlen((char*)g_txBuffer);
        c_len--;
        oSocSIP.SendTo(g_txBuffer, &c_len);
      } 
      else if (msgType==MSG_BYE)
      {
        printf("Invalid state\n"); return -1;
      } 
      else if (msgType==MSG_ACK)
      {
        sprintf(result, "Remote user at [%s] confirmed your acceptance. Starting audio communication...", g_SessionData.RemoteHost);
        if (oSocRTP.Initialize(g_SessionData.RemoteHost, RTP_PORT, RTP_PORT) < 0)
        {
           strcpy(result, "Error initializing RTP socket..");
           g_sip_done = true; 
           return -1;
        }
        //g_run_rtp = true;
        StartAudioThread();
        g_sip_state = SIP_CONNECTED;
      } 
      else if (msgType==MSG_RESPONSE)
      {
        int code = atoi(msgExtra);
        switch (code/100)
        {
          case 1://1xx message
            //invalid
            return 0;
          case 2:
            {
              //invalid 
            }
            break;
          case 3:
            //invalid
            return 0;
          case 4:
            strcpy(result, msgExtra);
            ClearSessionData();
            oSocSIP.ClearRemoteInfo();
            g_sip_state = SIP_IDLE;
            g_sip_mode  = SIP_NONE;
            return -1;
          case 5:
            strcpy(result, msgExtra);
            return 0;
          case 6:
            strcpy(result, msgExtra);
            ClearSessionData();
            oSocSIP.ClearRemoteInfo();
            g_sip_state = SIP_IDLE;
            g_sip_mode  = SIP_NONE;
            return -1;
          default:
            break;
        }
      } 
    }
    else if (g_sip_state==SIP_CONNECTED)
    {
      if (msgType==MSG_INVITE)
      {
        sprintf((char*)g_txBuffer, RESPONSE_MSG, 486, "Busy", g_SessionData.remoteRestHdr, "\0");
        int c_len = strlen((char*)g_txBuffer);
        c_len--;
        oSocSIP.SendTo(g_txBuffer, &c_len);
      } 
      else if (msgType==MSG_BYE)
      {
        //g_run_rtp = false;
        StopAudioThread();
        //g_au_started= true;
        sprintf((char*)g_txBuffer, RESPONSE_MSG, 200, "OK", g_SessionData.remoteRestHdr, g_SessionData.remoteRestBdy);
        int c_len = strlen((char*)g_txBuffer);
        oSocSIP.SendTo(g_txBuffer, &c_len);

        oSocSIP.ClearRemoteInfo();
        ClearSessionData();
        g_sip_state = SIP_IDLE;
        g_sip_mode  = SIP_NONE;
        strcpy(result, "Remote party says BYE. Closing connection..");
      } 
      else if (msgType==MSG_ACK)
      {
        //invalid..
      } 
      else if (msgType==MSG_RESPONSE)
      {
        int code = atoi(msgExtra);
        switch (code/100)
        {
          case 1://1xx message
            //invalid
            return 0;
          case 2:
            {
              //invalid 
            }
            break;
          case 3:
            strcpy(result, msgExtra);
            return 0;
          case 4:
            strcpy(result, msgExtra);
            ClearSessionData();
            oSocSIP.ClearRemoteInfo();
            g_sip_state = SIP_IDLE;
            g_sip_mode  = SIP_NONE;
            return -1;
          case 5:
            strcpy(result, msgExtra);
            return 0;
          case 6:
            strcpy(result, msgExtra);
            ClearSessionData();
            oSocSIP.ClearRemoteInfo();
            g_sip_state = SIP_IDLE;
            g_sip_mode  = SIP_NONE;
            return -1;
          default:
            break;
        }
      } 
    }
    else if (g_sip_state==SIP_DISCONX_PENDING)
    {
      if (msgType==MSG_INVITE)
      {
        sprintf((char*)g_txBuffer, RESPONSE_MSG, 486, "Busy", g_SessionData.remoteRestHdr, "\0");
        int c_len = strlen((char*)g_txBuffer);
        c_len--;
        oSocSIP.SendTo(g_txBuffer, &c_len);
      } 
      else if (msgType==MSG_BYE)
      {
        //g_run_rtp = false;
        //g_au_started= true;
        sprintf((char*)g_txBuffer, RESPONSE_MSG, 200, "OK", g_SessionData.remoteRestHdr, g_SessionData.remoteRestBdy);
        int c_len = strlen((char*)g_txBuffer);
        oSocSIP.SendTo(g_txBuffer, &c_len);
        StopAudioThread();

        oSocSIP.ClearRemoteInfo();
        ClearSessionData();
        g_sip_state = SIP_IDLE;
        g_sip_mode  = SIP_NONE;
        strcpy(result, "Remote party says BYE. Closing connection..");
      } 
      else if (msgType==MSG_ACK)
      {
        //invalid..
      } 
      else if (msgType==MSG_RESPONSE)
      {
        int code = atoi(msgExtra);
        switch (code/100)
        {
          case 1://1xx message
            strcpy(result, msgExtra);
            return 0;
          case 2:
            {
              oSocSIP.ClearRemoteInfo();
              ClearSessionData();
              g_sip_state = SIP_IDLE;
              g_sip_mode  = SIP_NONE;
            }
            break;
          case 3:
            strcpy(result, msgExtra);
            return 0;
          case 4:
            strcpy(result, msgExtra);
            ClearSessionData();
            oSocSIP.ClearRemoteInfo();
            g_sip_state = SIP_IDLE;
            g_sip_mode  = SIP_NONE;
            return -1;
          case 5:
            strcpy(result, msgExtra);
            return 0;
          case 6:
            strcpy(result, msgExtra);
            ClearSessionData();
            oSocSIP.ClearRemoteInfo();
            g_sip_state = SIP_IDLE;
            g_sip_mode  = SIP_NONE;
            return -1;
          default:
            break;
        }
      } 
    }
  }

  return 0;
}
示例#3
0
文件: tcsip.cpp 项目: sipper123/sip2
///////////////////////////////////////////////////
//This function implements the state diagram for
//user inputs
int ProcessUserCommand(char* command, char* result)
{
  if (!(command && result)) return -1;
  memset(result, 0, MAX_STR_LEN);

  int  cmdType = 0;
  char msgExtra[MAX_STR_LEN];
  cmdType = GetCommandType(command, msgExtra);
  if (cmdType < 0)
  {
    strcpy(result,"Please use one of the following commands:\n"
                  "       invite user@host  : To initiate a session with host\n"
                  "       accept            : To accept a request from remote host\n"
                  "       reject            : To reject a request from remote host\n"
                  "       bye               : To terminate an open session\n"
                  "       exit              : To terminate the program\n");
    return -1;
  }

  /* change the mode only if it is none; otherwise leave it as it is */
  if (g_sip_mode==SIP_NONE && cmdType==CMD_INVITE)
      g_sip_mode =SIP_CLIENT;

  /* client */
  if (g_sip_mode == SIP_CLIENT)
  {
    if (g_sip_state==SIP_IDLE)
    {
      if (cmdType==CMD_INVITE)
      { //Client at idle receives invite user@host: createSession;SetRemote sockaddr in oSocSIP, cook buffer and send.
        CreateSessionData(msgExtra);
         
        if (oSocSIP.SetRemoteInfo(g_SessionData.RemoteHost, SIP_PORT)<0)
        {
          strcpy(result, "Invalid host entered");
          return -1;
        }
        sprintf((char*)g___Buffer, INVITE_MSG, g_SessionData.From, (DWORD)lrand48(), (DWORD)lrand48(), g_SessionData.MyHost, g_SessionData.MyHost, SIP_PORT);
        int c_len = strlen((char*)g___Buffer);
        sprintf((char*)g_txBuffer, INVITE_HDR, g_SessionData.ToAdrs, g_SessionData.MyHost, SIP_PORT, g_SessionData.From, g_SessionData.FromAdrs, g_SessionData.To, g_SessionData.ToAdrs, g_SessionData.CallID, ++g_sip_seq, c_len);
        strcat((char*)g_txBuffer, (char*)g___Buffer);
        c_len = strlen((char*)g_txBuffer);
        oSocSIP.SendTo(g_txBuffer, &c_len);

        g_sip_state = SIP_CONX_PENDING;
      }
      else if (cmdType==CMD_ACCEPT)
      {
        strcpy(result, "Nothing to accept");
        return -1;
      }
      else if (cmdType==CMD_REJECT)
      {
        strcpy(result, "Nothing to reject");
        return -1;
      }
      else if (cmdType==CMD_BYE)
      {
        strcpy(result, "No active session to close");
        return -1;
      }
      else if (cmdType==CMD_EXIT)
      {
         g_sip_done = true;  
         //g_run_rtp = false;
         StopAudioThread();
         return 0;
      }
    }
    else if (g_sip_state==SIP_CONX_PENDING)
    {
      if (cmdType==CMD_INVITE)
      {
        strcpy(result, "Connection already in progress. Cannot invite now.");
        return -1;
      }
      else if (cmdType==CMD_ACCEPT)
      {
        strcpy(result, "Nothing to accept");
        return -1;
      }
      else if (cmdType==CMD_REJECT)
      {
        strcpy(result, "Nothing to reject");
        return -1;
      }
      else if (cmdType==CMD_BYE)
      {
        strcpy(result, "Connection in progress. Please try again");
        return -1;
      }
      else if (cmdType==CMD_EXIT)
      {
        strcpy(result, "Connection in progress. Please try again");
        return -1;
      }
    }
    else if (g_sip_state==SIP_CONNECTED)
    {
      if (cmdType==CMD_INVITE)
      {
        strcpy(result, "You are already connected. Please close this session (with bye) first before initiating a new session.");
        return -1;
      }
      else if (cmdType==CMD_ACCEPT)
      {
        strcpy(result, "You are already connected. Nothing to accept");
        return -1;
      }
      else if (cmdType==CMD_REJECT)
      {
        strcpy(result, "You are already connected. Nothing to reject");
        return -1;
      }
      else if (cmdType==CMD_BYE)
      {
        sprintf((char*)g_txBuffer, BYE_HDR, g_SessionData.ToAdrs, g_SessionData.MyHost, SIP_PORT, g_SessionData.From, g_SessionData.FromAdrs,
                                     g_SessionData.To, g_SessionData.ToAdrs, g_SessionData.CallID, ++g_sip_seq);

        int c_len = strlen((char*)g_txBuffer);
        oSocSIP.SendTo(g_txBuffer, &c_len);
        //g_run_rtp = false;
        StopAudioThread();
        //g_au_started = true;
        g_sip_state = SIP_DISCONX_PENDING;
      }
      else if (cmdType==CMD_EXIT)
      {
        strcpy(result, "You are currently connected. Please close this session (with bye) first, and then exit.");
        return -1;
      }
    }
    else if (g_sip_state==SIP_DISCONX_PENDING)
    {
      if (cmdType==CMD_INVITE)
      {
        strcpy(result, "Disconnection in progress. Please try again.");
        return -1;
      }
      else if (cmdType==CMD_ACCEPT)
      {
        strcpy(result, "Disconnection in progress. Nothing to accept.");
        return -1;
      }
      else if (cmdType==CMD_REJECT)
      {
        strcpy(result, "Disconnection in progress. Nothing to reject.");
        return -1;
      }
      else if (cmdType==CMD_BYE)
      {
        strcpy(result, "Disconnection in progress. Please try again.");
        return -1;
      }
      else if (cmdType==CMD_EXIT)
      {
        strcpy(result, "Disconnection in progress. Please try again.");
        return -1;
      }
    }
  }
  else
  /* server mode */
  if (g_sip_mode == SIP_SERVER)
  {
    if (g_sip_state==SIP_IDLE)
    {
      if (cmdType==CMD_INVITE)
      {
        printf("Invalid condition in the state machine!\n");
        return -1;
      }
      else if (cmdType==CMD_ACCEPT)
      {
        strcpy(result, "Nothing to accept");
        return -1;
      }
      else if (cmdType==CMD_REJECT)
      {
        strcpy(result, "Nothing to reject");
        return -1;
      }
      else if (cmdType==CMD_BYE)
      {
        strcpy(result, "No active session to close");
        return -1;
      }
      else if (cmdType==CMD_EXIT)
      {
         g_sip_done = true;  
         //g_run_rtp = false;
         StopAudioThread();
         return 0;
      }
    }
    else if (g_sip_state==SIP_CONX_PENDING)
    {
      if (cmdType==CMD_INVITE)
      {
        strcpy(result, "Connection already in progress. Cannot invite now.");
        return -1;
      }
      else if (cmdType==CMD_ACCEPT)
      {
        sprintf((char*)g_txBuffer, RESPONSE_MSG, 200, "OK", g_SessionData.remoteRestHdr, g_SessionData.remoteRestBdy);
        int c_len = strlen((char*)g_txBuffer);
        oSocSIP.SendTo(g_txBuffer, &c_len);
      }
      else if (cmdType==CMD_REJECT)
      {
        sprintf((char*)g_txBuffer, RESPONSE_MSG, 603, "Decline", g_SessionData.remoteRestHdr, "\0");
        int c_len = strlen((char*)g_txBuffer);
        c_len--;
        oSocSIP.SendTo(g_txBuffer, &c_len);
        g_sip_state = SIP_IDLE;
        g_sip_mode  = SIP_NONE;
      }
      else if (cmdType==CMD_BYE)
      {
        printf("Invalid condition in the state machine!\n");
        return -1;
      }
      else if (cmdType==CMD_EXIT)
      {
        strcpy(result, "Connection in progress. Please try again");
        return -1;
      }
    }
    else if (g_sip_state==SIP_CONNECTED)
    {
      if (cmdType==CMD_INVITE)
      {
        strcpy(result, "You are already connected. Please close this session (with bye) first before initiating a new session.");
        return -1;
      }
      else if (cmdType==CMD_ACCEPT)
      {
        strcpy(result, "You are already connected. Nothing to accept");
        return -1;
      }
      else if (cmdType==CMD_REJECT)
      {
        strcpy(result, "You are already connected. Nothing to reject");
        return -1;
      }
      else if (cmdType==CMD_BYE)
      {
        /*
           This is what i actually need to do. but resorting to short cut @@@@
        sprintf(g_txBuffer, BYE_HDR, g_SessionData.ToAdrs, g_SessionData.MyHost, g_SessionData.From, g_SessionData.FromAdrs,
                                     g_SessionData.To, g_SessionData.ToAdrs, g_SessionData.CallID, ++g_sip_seq);
        */
        sprintf((char*)g_txBuffer, "BYE %s SIP/2.0\n%s\n", g_SessionData.uri, g_SessionData.remoteRestHdr);
        int c_len = strlen((char*)g_txBuffer);
        oSocSIP.SendTo(g_txBuffer, &c_len);
        // g_run_rtp = false;
        StopAudioThread();
        //g_au_started= true;
        g_sip_state = SIP_DISCONX_PENDING;
      }
      else if (cmdType==CMD_EXIT)
      {
        strcpy(result, "You are currently connected. Please close this session (with bye) first, and then exit.");
        return -1;
      }
    }
    else if (g_sip_state==SIP_DISCONX_PENDING)
    {
      if (cmdType==CMD_INVITE)
      {
        strcpy(result, "Disconnection in progress. Please try again.");
        return -1;
      }
      else if (cmdType==CMD_ACCEPT)
      {
        strcpy(result, "Disconnection in progress. Nothing to accept.");
        return -1;
      }
      else if (cmdType==CMD_REJECT)
      {
        strcpy(result, "Disconnection in progress. Nothing to reject.");
        return -1;
      }
      else if (cmdType==CMD_BYE)
      {
        strcpy(result, "Disconnection in progress. Please try again.");
        return -1;
      }
      else if (cmdType==CMD_EXIT)
      {
        strcpy(result, "Disconnection in progress. Please try again.");
        return -1;
      }
    }
  }
  else
  if (g_sip_mode == SIP_NONE)
  {
    if( g_sip_state == SIP_IDLE)
    {
      if (cmdType==CMD_ACCEPT)
      {
        strcpy(result, "Nothing to accept");
        return 0;
      }
      else if (cmdType==CMD_REJECT)
      {
        strcpy(result, "Nothing to accept");
        return 0;
      }
      else if (cmdType==CMD_EXIT)
      {
         g_sip_done = true;  
         //g_run_rtp  = false;
         StopAudioThread();
         return 0;
      }
    }
  }

  return 0;
}