Assignment 4

File:

• bind.c & bind.h: These files contains function create_listen_socket. This is used to create a socket and bind it to the port.
• filelinkedlist.c & filelinkedlist.h: These two files are used to create a list to contains the path in the requests. I originally wanted to use a barrier instead, but I think it works better. This is to prevent two requests accessing the same file at the same time. This also acts as a barrier during the final check to see if there are any remaining outstanding requests.
• httpserver.c & httpserver.h: These two files are the main body of the entire program. There is a function that converts a string into a port number. There are also connection handlers. But you can't find the connection handler in the file. Since my program design is too different from the previous single-threaded server, I divided it into producer (that is, the function of dispatcher thread) and customer (that is, the function of worker thread). The last function is sigterm_handler. This is used to deal with the situation encountered when the server encounters the SIGTERM command (that is, signal()).
• LICENSE: It's used to protect my right.
• Makefile: This is used to compile several files together.
• samplelog.txt: This file is the sample of what Audit Log should be after run the test.sh. I will use this to compare what program get after run the test.sh.
• queue.c & queue.h: These two files contain definitions for thread-safe queues. This is an important part of forming a multi-threaded server.
• test.sh: This is used to test the operation of the program.
• writeup.tex & writeup.pdf: It contains the design of my program and more details than here. (Please check these two files if you want to know more about this program)
• README.md: This is file you are reading.
• .gitnore This is the file that filter the unnecessary files (but I think it's not so important)

Defect:

1. The file does not work perfectly for requests with message bodies that contain binary characters (that is, non-ASCII characters)
2. After running enough examples, you will find that in a few cases, PUT will add some extra messy content to the content of the message body. (I guess it may be related to illegal access to memory, but I still can't find out why).