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# webserv # webserv
A simple non-blocking single threaded server using Linux's `epoll` facility. A simple non-blocking web server written in C++98 using Linux's `epoll` facility .
### Pre-requisites ### Pre-requisites
@@ -15,23 +15,27 @@ git clone https://github.com/3lswear/webserv
``` ```
``` ```
make cd webserv && make
``` ```
### Usage ### Usage
``` ```
./webserv your_config_file.toml webserv your_config_file.toml
``` ```
![Usage](https://raw.githubusercontent.com/3lswear/webserv/fb4e2853a84ef57d68beafb5a4e688188c8d030b/assets/usage.svg)
### Features ### Features
- HTTP 1.1 Compliant - HTTP 1.1 compliant
- Supported methods: `GET`, `POST`, `DELETE`, `PUT` - Supported methods: `GET`, `POST`, `DELETE`, `PUT`
- Non-blocking - Non-blocking
- Efficient resource usage (doesn't use CPU on idle) - Efficient resource usage (doesn't use CPU on idle)
- Fair client handling (1 slow client won't slow down 50 fast clients) - Fair client handling (1 slow client won't slow down 50 fast clients)
- listen on multiple ports/interfaces - Listen on multiple ports/interfaces
- TOML config format - TOML config format
- multiple servers, with unique` server_name`s - multiple servers, with unique` server_name`s
- multiple location (route) blocks - multiple location (route) blocks
@@ -44,17 +48,22 @@ make
### Collaborators ### Collaborators
A team project: A team project made by:
- [3lswear](https://github.com/3lswear) - [sunderle](https://github.com/3lswear)
- [talyx](https://github.com/talyx) - [talyx](https://github.com/talyx)
### Why ? ### Why ?
- Why epoll? #### Why epoll?
- Epoll is one of the modern event listeners/IO multiplexers out there (the other is kqueue). Epoll works on the assumption that set manipulation is not as frequent as event handling, and the performance trade-offs are made accordingly. Although it's not without it's problems (link)
- Why `TOML` for a config file? Epoll is one of the modern event listeners/IO multiplexers out there (the other is kqueue). Epoll works on the assumption that set manipulation is not as frequent as event handling, and the performance trade-offs are made accordingly. [Although, it's not without it's problems.](https://idea.popcount.org/2017-02-20-epoll-is-fundamentally-broken-12/)
- TOML was our format of choice because it provides strict structure of document, around which we could model our internal data structures. With a set file type like TOML the syntax is clear and unambiguous, and the tools like syntax highlighting and validation are already available. Also it isn't as hard to parse as YAML, although admittedly being less pretty. Lastly, we didn't want to just copy nginx's config structure.
- Why make this project in the first place? #### Why `TOML` for a config file?
- It was a great opportunity to learn writing bigger projects in C++, learn a little about network programming, how does OS handle socket IO, and to try tackling typical problems that come with socket IO and a need to serve a sizable amount of clients. Also, it was interesting to learn how software of similar purpose works (nginx uses `epoll` too!).
TOML was our format of choice because it provides strict structure of document, around which we could model our internal data structures. With a set file type like TOML the syntax is clear and unambiguous, and the tools like syntax highlighting and validation are already available. Also it isn't as hard to parse as YAML, although admittedly being less pretty. Lastly, we didn't want to just copy nginx's config structure.
#### Why make this project in the first place?
It was a great opportunity to learn writing bigger projects in C++, learn a little about network programming, how does OS handle socket IO, and to try tackling typical problems that come with socket IO and a need to serve a sizable amount of clients. Also, it was interesting to learn how software of similar purpose works (nginx uses `epoll` too!).