[UDT] about "UDT::select"

[XU, L. <xul...@gm...>]

Hello!

I've been using UDT on Windows-XP recently. I found it easy to use. But whe=
n
I use the function "UDT::select" in my program(on MS visual
studio.net2003),  I got a run-time error :
*****************************************
Debug Assertion Failed!
Program: e:\try.cpp
File: dbgheap.c
Line: 1132

Expression: _CrtIsValidHeapPointer(pUserData)
******************************************

We cannot find where the problem is. Could you please kindly take the bothe=
r
to have a look at this and help to find out the reason? Look forward to you=
r
help! Thanks a million.

Best,

Leslie

The source code file is as follows:

////////////////////////////////////////////////////////////////////
#include <iostream>
#include <udt.h>


using namespace std;

using namespace UDT;

int main()
{

 UDTSOCKET serv2 =3D UDT::socket(AF_INET, SOCK_STREAM, 0);
 sockaddr_in my_addr2;
 my_addr2.sin_family =3D AF_INET;
 my_addr2.sin_port =3D htons(22222);
 my_addr2.sin_addr.s_addr =3D INADDR_ANY;

 cout<<"server open: "<<serv2<<endl;
 if (UDT::ERROR =3D=3D UDT::bind(serv2, (sockaddr*)&my_addr2, sizeof(my_add=
r2)))
 {
  cout << "bind: " << UDT::getlasterror().getErrorMessage();
  return 0;
 }
 UDT::listen(serv2, 10);

 int namelen;
 sockaddr_in their_addr;

 UDTSOCKET recver =3D UDT::accept(serv2, (sockaddr*)&their_addr, &namelen);
 if(UDT::ERROR !=3D recver)
  cout<<"new client coming..."<< recver <<endl;

 timeval tv;
 UDSET tempfds;

 tv.tv_sec =3D 2;
 tv.tv_usec =3D 0;

 UD_ZERO(&tempfds);
 UD_SET(recver, &tempfds);

 if( UD_ISSET(recver, &tempfds))
  cout<<"yes!"<<endl;
 bool done =3D false;
 int i =3D 0;

 Sleep(5000);
 while(!done)
 {
  int res =3D UDT::select(0, &tempfds, NULL, NULL, &tv);

  if(res =3D=3D 0 && res !=3D (UDT::ERROR))
  {
   cout<<++i<<": "<<"time out!"<<endl;
   tv.tv_sec =3D 2;
   tv.tv_usec =3D 0;
   UD_ZERO(&tempfds);
   UD_SET(recver, &tempfds);
   continue;
  }
  else if( UD_ISSET(recver, &tempfds) )
  {
   cout<<"good!"<<endl;
   done =3D true;
  }
  else
  {
   cout<<"what's up?"<<endl;
   break;
  }

 }
 UDT::close(serv2);
 return 0;
}

///////////////////////////////////////////////////////////////////////