how to get tcp/ip server handle, the client is ARM7

[DavidNI]

Hi to all:

i am trying to use TCP/IP to connect with ARM  , which connection between server(PXI tester) and client(ARM) has been confirmed using ARM vendor program,it is OK!

so i want use LabWindows program to complete this function, but i confront some problems. the errcode is -12 that means no connection established, I list all my test program for you,please help me trap the problem (there is no *.UIR, USING CVI  functionn directly).

I dont know how to get the right conversationHandle, when i invoke TCP_server_send() and the program  breaks in ServerTCPWrite (), TCP_server_init() is OK

could you tell me how to resolve this problem.

THANK you very much

tcp_main.h:

int TCP_server_init(void) ;
int TCP_servr_terminated(void);
int TCP_server_send(void);
int TCP_server_receiver(void);

typedef struct
{
 int x;
 double y;
 int z;
 char c;
}XYZ  ;

//=======================================

tcp_main.c:

#include <userint.h>
#include <ansi_c.h>
#include <cvirte.h>
#include <tcpsupp.h>
#include "tcp_main.h"

#define SERVERPORT   (2000)

static unsigned int conversationHandle;

int  serverCallBack (unsigned handle, int event, int errCode, void *callbackData);

int main (int argc, char *argv[])
{
 int iRtn = 0;
 if (InitCVIRTE (0, argv, 0) == 0)
  return -1;    /* out of memory */
 
  iRtn = TCP_server_init() ;
  iRtn = TCP_server_send();
  iRtn = TCP_server_receiver();
  iRtn = TCP_servr_terminated();
 return 0;
}

//================================================
int TCP_server_init(void)
{
 int iRtn = 0;
 char buff[256] ={'0'};
 
 iRtn =  RegisterTCPServer (SERVERPORT, serverCallBack, 0);
 ProcessTCPEvents();
 if(iRtn < 0)
 {
  MessagePopup("TCP Server", "RegisterTCPServer FAIL!") ;
 }
 else
 {
  GetTCPHostAddr (buff, 256);
  GetTCPHostName (buff, 256);
 }
// ProcessSystemEvents();
// ProcessTCPEvents();
 return 0;
}

//===================================================
int TCP_servr_terminated(void)
{
 
 if (conversationHandle)
 {
  DisconnectTCPClient (conversationHandle);
 }
 conversationHandle = 0;
   
  
 UnregisterTCPServer (SERVERPORT);
 return 0;
 
}

//=================================================
int TCP_server_send(void)
{
 
 char *err = NULL;
 int iLength = 0;
 XYZ xyz;
 xyz.x = 1;
 xyz.y =10.9;
 xyz.z = 5;
 xyz.c = 'c';
 iLength = sizeof(xyz) ;
// ProcessTCPEvents();
 if(ServerTCPWrite (conversationHandle,(char*)&xyz,iLength ,  0)< 0)
 {
     MessagePopup("TCP server","TCP write error"); 
 }
 return 0;
 
}
//=================================================
int TCP_server_receiver(void)
{
  int iRtn;
  //char sbuffer[1000];
  XYZ xyzRec;
  iRtn = ServerTCPRead (conversationHandle, &xyzRec, sizeof(xyzRec), 0);
 
  return iRtn;
}

//=======================================
int  serverCallBack (unsigned handle, int event, int errCode, void *callbackData)
{
 char recbuf[512];
 char addBuf[31];
 int  readSize = 0;
 char nameBuf[50];
 int iRtn;
 switch (event)
 {
 // ProcessTCPEvents();
 
  case TCP_CONNECT:
   
   conversationHandle = handle;
   iRtn = GetTCPPeerAddr (conversationHandle, addBuf, 31);
  // GetTCPPeerName (conversationHandle, nameBuf, 50);
   SetTCPDisconnectMode (conversationHandle, TCP_DISCONNECT_AUTO);
   
   break;
   
   
  case TCP_DISCONNECT:
   if (handle == conversationHandle)
   {
    conversationHandle = 0;
   
   }
   break;
  
 
  case TCP_DATAREADY:
  if((readSize = ServerTCPRead (conversationHandle, recbuf, 512, 0)) < 0)
  {
   MessagePopup("TCP server","TCP read ERR"); 
  }
  
  
   break;
 }
 ProcessTCPEvents();
 return 0;
}