Solved

TCP Internals

Posted on 1998-01-13
5
502 Views
Last Modified: 2013-12-26
Yes, it's really 400 points. And it's a tough one. :)

I need to know the general design of TCP internals. That is, what in general happens on the TCP level between calls to open and close a socket. How it sends IP datagrams. How it works with SYN / ACK packets etc.

In particular, I am interested in what else TCP is doing other than calling IP API. Allocating memory, obviously. Does it use timers? Other system calls? Interrupts?

There are no books available for me on this topic. So I look for a few pages of explanations. Thanks.
0
Comment
Question by:simonff
  • 2
  • 2
5 Comments
 
LVL 5

Expert Comment

by:yonat
ID: 1295913
First of all, get "Interneting with TCP/IP" by Stevens. All three volumes. TCP is in volume I, but all volumes are highly recommended.

As for what the TCP layer does:
1. Collects the "payload" parts of IP packets into a continuous buffer.
2. In order to do 1 above, re-orders any out-of-order IP packets.
3. In order to do 1 above, ensure that no IP packets are missing (usualy using a "moving window", and yes - timers).

For more info on implementing TCP stacks, see another book by Stevens, I think it's called "Unix Networking" or something like this.


0
 

Author Comment

by:simonff
ID: 1295914
Thanks, Yonat. Unfortunately, as I said, I cannot get a hold of any books in time. Ordering them takes about a month here in Moscow, Russia.
0
 
LVL 32

Accepted Solution

by:
jhance earned 400 total points
ID: 1295915
Have you explored the resources at www.linux.org.  There is a lot of information about how the linux networking stuff works and you can also download complete source code to working tcp/ip protocol drivers.
0
 

Author Comment

by:simonff
ID: 1295916
Thanks, but this information is all high-level, either just describing TCP and IP without delving into the implementation, or telling how to program with sockets.
0
 
LVL 5

Expert Comment

by:yonat
ID: 1295917
Ah you want to program with sockets - go to www.sockets.com (It is MS Windows specific). They have lots of docus and sample programs.

BTW, the second Stevens book I mentioned is called "Unix Network Programming", and it is very recommended. I'm sure you can find these books in any university library.
0

Featured Post

Announcing the Most Valuable Experts of 2016

MVEs are more concerned with the satisfaction of those they help than with the considerable points they can earn. They are the types of people you feel privileged to call colleagues. Join us in honoring this amazing group of Experts.

Question has a verified solution.

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

Introduction: Dialogs (2) modeless dialog and a worker thread.  Handling data shared between threads.  Recursive functions. Continuing from the tenth article about sudoku.   Last article we worked with a modal dialog to help maintain informat…
Exception Handling is in the core of any application that is able to dignify its name. In this article, I'll guide you through the process of writing a DRY (Don't Repeat Yourself) Exception Handling mechanism, using Aspect Oriented Programming.
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.

828 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