Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

Help For CAsyncSockt..?

Posted on 1998-06-16
2
Medium Priority
?
165 Views
Last Modified: 2013-11-20
Anybody can tell you how to use CAsyncSockt in Non-Blocking mode..? If Possible any sample code also..The doubt is how to use the notification messages.

Thanx In Advance
Sanesh
0
Comment
Question by:sanesh
[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
  • 2
2 Comments
 
LVL 32

Accepted Solution

by:
jhance earned 200 total points
ID: 1317997
It's pretty simple:

1) Derive your own class from CAsyncSocket, say myAsyncSocket so that you can override the OnXXX functions to receive the notification messages. Do this by using the ClassWizard, Add new class dialog.  Be sure to select CAsyncSocket as the base class.

2) Add an instance of myAsyncsocket to your application.

3) Using the ClassWizard in VC++, add the message maps for the notifications you want to receive.

4) Implement your OnXXX functions.  It seems the biggest confusion is about OnSend.  It notifies that it is OK to send data, NOT that the data has been sent.

0
 
LVL 32

Expert Comment

by:jhance
ID: 1317998
Oops, I forgot to include:

Call IOCtl(FIONBIO, &dwNoblock); (with dwNoblock a DWORD != 0)
to make the socket non-blocking, then call

AsyncSelect() to enable the notifications you want to receive.  

Remember to set the lEvent paramter in Create to 0 so that you can call IOCtl on the object.
0

Featured Post

Survive A High-Traffic Event with Percona

Your application or website rely on your database to deliver information about products and services to your customers. You can’t afford to have your database lose performance, lose availability or become unresponsive – even for just a few minutes.

Question has a verified solution.

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

Introduction: Displaying information on the statusbar.   Continuing from the third article about sudoku.   Open the project in visual studio. Status bar – let’s display the timestamp there.  We need to get the timestamp from the document s…
Ready to get certified? Check out some courses that help you prepare for third-party exams.
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, Percona Director of Solution Engineering Jon Tobin discusses the function and features of Percona Server for MongoDB. How Percona can help Percona can help you determine if Percona Server for MongoDB is the right solution for …

721 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