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VC++即时通讯系统设计英文论文第8页

更新时间：2010-6-17: 来源：毕业论文

即时通讯系统设计英文论文
AI.1.1 Create socket and listen to the client:
Code:
void CHHSeverApp::OnServerStart()
{
// TODO: Add your command handler code here
if(!AfxSocketInit())
{
  AfxMessageBox(IDP_SOCKETS_INIT_FAILED);
}
m_listenSocket.Create(6767);
m_listenSocket.Listen();
}
AI.1.2 Add the connected client socket to the socket list:
Code:
BOOL CClientSocketList::Add(CClientSocket *add,CString ID)
{
add->m_ID=ID;
CClientSocket *tmp=Head;
if(!Head)
{
  Head=add;
  return true;
}
while(tmp->Next)tmp=tmp->Next;
tmp->Next=add;
add->Front=tmp;
return true;
}

AI.1.3 Delete the closed client socket from the socket list:
Code:
BOOL CClientSocketList::Delete(CClientSocket *del)
{
CClientSocket *tmp=Head;
if(!Head)
{
  return FALSE;
}
while(tmp!=del&&tmp->Next!=0) tmp=tmp->Next;
if(tmp!=del)
  return FALSE;//break;//errors
else
{
  if(tmp->Front)
   if(tmp->Next)
   {
    tmp->Front->Next=tmp->Next;
    tmp->Next->Front=tmp->Front;
   }
   else
   {
    tmp->Front->Next=NULL;
   }
  else
   if(tmp->Next)
   {
    Head=tmp->Next;
    tmp->Next->Front=NULL;
   }
   else
   {
    Head=NULL;
   }

}
return TRUE;
}
AI.1.4 Create the userInfo table:
Code:
http://www.youerw.com/
  CString info;
  info.Format("%s",buff);
  info=info.Mid(5);

  long id ;
  CString strId ;
  id = ReturnID();              //2.get the new user ID
  if(id == -1)
  {
   strId = "1000" ;
   info="#"+strId+"|"+info;
  }
  else
  {
   strId.Format("%d",++id);
   info="#"+strId+"|"+info;
  }

  AddUserInfo(info);//3.write new user info into the file

  char idChar[100];
  CString idStr;
  idStr="0x01"+strId;
  sprintf(idChar,"%s",idStr);
  cs->Send(idChar,100);     //4.return the new ID
}

long CClientSocket::ReturnID() //return the last ID in the userInfo table
{
  CString fPath = GetCurPath() + ";
  CFile aFile;
  CFileStatus status;
  if( CFile::GetStatus( fPath, status ) )
  {
   // Open the file without the Create flag
   aFile.Open( fPath, CFile::modeReadWrite );