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

x
?
Solved

How to handke mutiple Winsock Clients messages?

Posted on 2008-10-11
2
Medium Priority
?
240 Views
Last Modified: 2013-11-23
Hi Experts,
My Delphi 6 application need to listen to a TCP port and respond to multi clients messages accordingly.

This is the protocol of the communication.

Connection Request from client , 16 bytes
A B C L 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00

I need to respond with 16 bytes
A B C R  0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00

Then Client will Send 16 + Commad No of Bytes which will be in 8 to 11
A B C L  0x00 0x00 0x00 0x00 8 9 10 11 0x00 0x00 0x00 0x00 ...

I need to respond this with same No of bytes
A B C R  0x00 0x00 0x00 0x00 8 9 10 11 0x00 0x00 0x00 0x00 ...

Finally  Disconnection from Client.
A B C L 0x01 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00

I'm VERY new to winsock and TCP comunication. It would be very helpful if it is a detailed working sample.

When I use a Network Snipper WireShark the data for Connection looks is like this
41 42 43 4c 00 00 00 00 00 00 00 00 00 00 00 00

Thanks
PCSC
0
Comment
Question by:pcssecure
[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 Comments
 
LVL 15

Accepted Solution

by:
mikelittlewood earned 2000 total points
ID: 22694206
Take a look at the indy components and demos at http://www.indyproject.org/index.en.aspx
0
 

Author Comment

by:pcssecure
ID: 22695904
I'm seeing something wrong in the format. So re-posting again.
0

Featured Post

Enroll in September's Course of the Month

This month’s featured course covers 16 hours of training in installation, management, and deployment of VMware vSphere virtualization environments. It's free for Premium Members, Team Accounts, and Qualified Experts!

Question has a verified solution.

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

Navigation is an important part of web design from a usability perspective. But it is often a pain when it comes to a developer’s perspective. By navigation, it often means menuing. This is less theory and more practical of how to get a specific gro…
There is an easy way, in .NET, to centralize the treatment of all unexpected errors. First of all, instead of launching the application directly in a Form, you need first to write a Sub called Main, in a module. Then, set the Startup Object to th…
The viewer will learn how to use the return statement in functions in C++. The video will also teach the user how to pass data to a function and have the function return data back for further processing.
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.

670 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