?
Solved

Communication problem with CSocket -  CSocketFile - CArchive

Posted on 2002-05-29
7
Medium Priority
?
604 Views
Last Modified: 2013-11-20
Hi,
I try to implement a small socket app, a server and a client. The server just should print out, what the client send to him.
I think that the connections stand, but the communication doesn't work. If I try to read from the archive at the server side, it throws an ugly error, if i try to evaluate Archive::IsBufferEmpty, it's always empty. But the client permanently send the string "hallo" and flushes.
I have no any ideas left, here comes the code :

bool CSocket1Dlg::Server()
{
     CSocket ServerSocket;

     UpdateData();

     if( ! m_Socket.Create( m_iPort ) )
     {
          AfxMessageBox( _T("Couldn't create Serversocket"));
          return false;
     }
     if( ! m_Socket.Listen() )
     {
          AfxMessageBox( _T("Couldn't listen at Serversocket"));
          return false;
     }
     m_Socket.Accept( ServerSocket );

     CSocketFile SockFile( & m_Socket );
     CArchive     Archive( & SockFile, CArchive::load );

     while( 1 )
     {
          if( ! Archive.IsBufferEmpty() )
          {
               Archive >> m_sEditRead;

               m_EditRead.UpdateData( false );
               m_EditRead.RedrawWindow();
          }
     }

     return true;
}

bool CSocket1Dlg::Client()
{
     CString s("H A L L O");
     UpdateData();

     if( ! m_Socket.Create() )
     {
          AfxMessageBox( _T("Couldn't create Clientsocket"));
          return false;
     }
     m_Socket.Connect( getIPAdressString(), m_iPort );

     CSocketFile SockFile( & m_Socket );
     CArchive     Archive( & SockFile, CArchive::store );

     while( 1 )
     {
          Archive << s;
          Archive.Flush();
     }

     return true;
}

thanxs a lot
0
Comment
Question by:DennisWood
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 2
7 Comments
 
LVL 23

Expert Comment

by:Roshan Davis
ID: 7041453
How you run client and server in the same thread.

u are using the infinite loop .
So the server never get a chance to connect...

Roshmon
0
 
LVL 22

Expert Comment

by:ambience
ID: 7041476
are you using multiple threads ? , if not then you should.

try spawning the server thread first and maybe with a higher priority than the client thread.

Or better yet put a delay in client, so as to give the server a fair chance to catch up.
0
 

Author Comment

by:DennisWood
ID: 7042102
Sorry, it looks a little bit confusing, in fact it's one application, but i start two instances, one as client, the other one as server. The infinite loops is just while i'm still testing, but all networkfunctionality is in the two methodes. Nothing gets initializied in another part.
0
Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 22

Accepted Solution

by:
ambience earned 400 total points
ID: 7043606
CSocketFile SockFile( & m_Socket );

change that to

CSocketFile SockFile( & ServerSocket);
   
0
 

Author Comment

by:DennisWood
ID: 7044937
OK I'll try it, would maybe take until monday, cause I don't have windowsaccess
0
 

Author Comment

by:DennisWood
ID: 7046397
Sorry, but it still won't work. I'm really out of any idea solving this problem.
0
 

Author Comment

by:DennisWood
ID: 7066764
Now I've just have a "workaround", byletting the CArchive away.
0

Featured Post

Moving data to the cloud? Find out if you’re ready

Before moving to the cloud, it is important to carefully define your db needs, plan for the migration & understand prod. environment. This wp explains how to define what you need from a cloud provider, plan for the migration & what putting a cloud solution into practice entails.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In this article, I'll describe -- and show pictures of -- some of the significant additions that have been made available to programmers in the MFC Feature Pack for Visual C++ 2008.  These same feature are in the MFC libraries that come with Visual …
Have you tried to learn about Unicode, UTF-8, and multibyte text encoding and all the articles are just too "academic" or too technical? This article aims to make the whole topic easy for just about anyone to understand.
This video will show you how to get GIT to work in Eclipse.   It will walk you through how to install the EGit plugin in eclipse and how to checkout an existing repository.
In this video we outline the Physical Segments view of NetCrunch network monitor. By following this brief how-to video, you will be able to learn how NetCrunch visualizes your network, how granular is the information collected, as well as where to f…
Suggested Courses
Course of the Month11 days, 17 hours left to enroll

752 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question