代理开发时候为什么一旦有大的图片或者有弹出窗口就会死机

下面是从服务器接收后发到客户。是在一个线程里面
char tempb[BUFSIZE];
while(1){
j=recv(proxyToServer.m_socket,tempb,BUFSIZE-1,0)；
    if(j<=0){
shutdown(b.m_socket,0x02);
  shutdown(acc.m_socket,0x02);
  closesocket(b.m_socket);
  closesocket(acc.m_socket);
return 1l;
    break;
   }
  }
    iRe=acc.send(tempb,j,0);
memset(tempb,'\0',j);
  if(iRe<=0){
  shutdown(proxyToServer.m_socket,0x02);
  shutdown(acc.m_socket,0x02);
  closesocket(b.m_socket);
  closesocket(acc.m_socket);
return 1l;
  }