https://lectureswww.readthedocs.io/5.web.server/cgi.html
- You must write a HTTP server in C++ 98
- The C++ standard must be C++ 98. Your project must compile with it.
- It must be conditionnal compliant with the rfc 7230 to 7235 (http 1.1) but you need to implement only the following headers
- Accept-Charsets
- Accept-Language
- Allow
- Authorization
- Content-Language
- Content-Length
- Content-Location
- Content-Type
- Date
- Host
- Last-Modified
- Location
- Referer
- Retry-After
- Server
- Transfer-Encoding
- User-Agent
- WWW-Authenticate
- You can implement all the headers if you want to
- We will consider that nginx is HTTP 1.1 compliant and may be use to compare headers and answer behaviors
- It must be non blocking and use only 1 select for all the IO between the client and the server (listens includes).
- Select should check read and write at the same time.
- Your server should never block and client should be bounce properly if necessary
- You should never do a read operation or a write operation without going through select
- Checking the value of errno is strictly forbidden after a read or a write operation
- A request to your server should never hang forever
- You server should have default error pages if none are provided
- Your program should not leak and should never crash, (even when out of memory if all the initialisation is done)
- You can’t use fork for something else than CGI (like php or perl or ruby etc...)
- You can include and use everything in "iostream" "string" "vector" "list" "queue" "stack" "map" "algorithm"
- Your program should have a config file in argument or use a default path
- https://luminousmen.com/post/asynchronous-programming-blocking-and-non-blocking
- http://www.stolyarov.info/books/programming_intro/vol3 (page 227)