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Stop-and-Wait Protocol
Bid Request Id: 19294

Posted by:	ajd (3 ratings) (Software buyer rating 10)
Posted:	6/16/2002 9:47:35 PM EST
Bidding Closes:	6/17/2002 11:00:00 PM EST
Viewed:	123 times

Phase:	100% of work was accepted by buyer. Coder account has been credited.
Max Accepted Bid:	Bidding is closed
Project Type:	Personal Project / Homework Help
Bidding Type:	Open Auction
Categories:	Language Specific, C++ / C, UNIX, Network, Network Design, Network Implementation

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Description:
Project 3: Stop-and-Wait Protocol
Due date: June 19th, 2002

When this project has been completed, the following outcomes should be realized.

Complete understanding of protocol 2 of handout
Able to implement round trip message passing
Use of UDP datagrams
Use of sockets for I/O
Understanding the role of ports and IP addresses for socket programming
Understanding of the data structures involved using the socket library
Understanding distributed processing (compared to multiprocessing)
Understanding of the Stop-and-Wait Protocol
Better understanding of protocol architecture. In particular, the services provided to the network layer and the physical layer services used by this protocol.
Your assignment is to implement the Stop-and-Wait Protocol 2 (assumes error free transmission). This protocol can be found in the handout of protocols. You also have a handout with TCP/IP system calls for sending and receiving UDP datagram.

This project requires two programs. One program should model the sender and the other should model the receiver given in the protocol handout. One main() should have the same layout as the sender of the protocol, and the other main() should have the same layout as the receiver of the protocol. By layout I mean the same function calls (your code provides the functions), e.g., from_network_layer() and the same while loop. Your variables declarations and formal parameters will differ from the protocol. Each main () should behave as a driver program. All variables should be declared in main() and passed to the appropriate functions. You may not have global variables!

The sender executable and the receiver executable should each execute on a different machine.

The call from_network_layer() obtains data to send. For your implementation of this function, I suggest prompting the user for a value to send. The call to_network_layer() passes the received data to the above layer. I suggest your implementation of this function simply writes the message received to the screen. You must provide these two functions.

The minimum system calls you will need are:

socket()
bind()
gethostbyname()
gethostname()
sendto()
recvfrom()

Your grade will be based on the correct implementation of this assignment. A program that does not compile and run receives a zero.

Deliverables:
Complete and fully-functional working program(s) in executable form as well as complete source code of all work done.

Complete copyrights to all work purchased.

Platform:
Must be written in pure ANSI C and compile on Unix platform.

Must be 100% finished and received by buyer on:
Time legal notes: All times are expressed in the time zone of the site EST (GMT - 5). If the buyer omitted a time, then the deadline is 11:59:59 PM EST on the indicated date.
6/19/2002 11:00:00 PM

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Name Bid Amount Date Coder Rating

This bid was accepted by the buyer!

kurtn
(16 ratings)
in Norcross, Georgia
United States

$40 6/17/2002 3:39:31 AM EST 9.81
(Excellent)

I can have this program completed for you within 24 hours of acceptance of my bid (if not earlier), and have it compile/run on all Unix platforms.
I have over 7 years of experience performing software development in C, C++, and Java.