Description
Your task is to write (some parts of) a multi-threaded HTTP multipart downloader program.
There are two parts:
Part 1 – a minimal HTTP client
Part 2 – a concurrent queue using semaphores.
Part 3 – determining chunk sizes and the number of partial downloads required
Part 4 – merging & removing partial content files
A downloader is written in terms of these parts and you will do some analysis and write a short report.
All the programs can be compiled using a Makefile provided simply by going to the base directory where you unpack the assignment and typing ‘make‘
Guidelines
- No more than 3 levels of nesting in any function and less than 40 lines of code
- Use minimum amount of code required
- Do not modify any code outside of c, queue.c and downloader.c (or the test programs which you may modify to improve – but they will not be marked), otherwise your submission will fail to compile (and you will receive zero marks)
- All memory allocated during the programs execution should be free()’ed and all resources, files, sockets should be closed before the program finishes. Check your program with valgrind – leakcheck=all to be sure!
- Comment code as necessary, excessive commenting is not required but anything not obvious should be documented
- Marks will be awarded for clean code and documentation
