Implement Birman-Schiper-Stephenson protocol for the casual ordering of messages

Question

Implement Birman-Schiper-Stephenson protocol for the casual ordering of messages

Create 10 processes and make them communicate with each other using TCP. A common file, “setup.txt” will be given to describe the address and port number of each process to listen incoming connection request. The format of the file should be, for instance,

===

1              127.0.0.1              5000

2              127.0.0.1              5001

3              127.0.0.1              5002

4              127.0.0.1              5003

.

.

.

10           127.0.0.1              5009

===

Explanation / Answer

1.ALL MESSAGES ARE TIME STAMPED BY THE SENDING PROCESS (THIS TIME IS SEPERATE FROM THE GLOBAL TIME TALKED ABOUT IN THE PREVIOUS SECTION .INSTEAD EACH ELEMENT OF THE VECTOR CORRESPONS TO THE NUMBER OF MESSAGES SENT INCLUDING TO THE PROCESS

2 A MESSAGE CAN NOT BE DELIVERED UNTIL

ALL MESSAGE BEFORE THIS ONE HAVE BEEN DELIVERED LOCALLY

3 MESSAGE IS DELIVERED THE CLOCK IS UPDATED

4 THIS PROTOCOL REQUIRES THAT THE PROCESSES COMMUNICATE THROUGH BOADCAST MESSAGE SINCE THIS WOULD ENSURE THAT ONLY ONE MESSAGE COULD BE RECIEVE AT ANY ONE TIME

1 . 127.0.0.1 5000

2 . 127.0.0.1 5001

3 .127.0.0.1 5002

4.127.0.0.1 5003

5.127.0.0.1 5004

6.127.0.0.1 5005

7.127.0.0.1 5006

8.127.0.0.1 5007

9.127.0.0.1 5008

10.127.0.0.1 5009

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