# Apple Pie

Apple pie is a HTTP Server implementation in [Zig](https://ziglang.org). The initial goal is to offer full support for http versions 1.0 and 1.1 with 2.0 and further planned at a later stage. With Apple Pie I'd like to offer a library that contains all features you'd expect from a server, while still remaining performant. Rather than hiding complexity, I want to expose its functionality so users can replace and/or expand upon to fit their needs.

## Roadmap
- HTTP 1.1 spec (fully) implemented

## Features
- Crossplatform support
- Extensive routing (see the [router](examples/router.zig) example) built in
- Allows for both async and blocking I/O using Zig's std event loop

## Example
A very basic implementation would be as follow:

```zig
const std = @import("std");
const http = @import("apple_pie");

// use evented mode for event loop support
pub const io_mode = .evented;

// optional root constant to define max stack buffer size per request
pub const buffer_size: usize = 4096;
// optional root constant to define max header size per request
pub const request_buffer_size: usize = 4096;

/// Context variable, accessible by all handlers, allowing to access data objects
/// without requiring them to be global. Thread-safety must be handled by the user.
const Context = struct {
    data: []const u8,
};

pub fn main() !void {
    var gpa = std.heap.GeneralPurposeAllocator(.{}){};
    defer _ = gpa.deinit();
	
    const my_context: Context = .{ .data = "Hello, world!" };
	
    try http.listenAndServe(
        gpa.allocator(),
        try std.net.Address.parseIp("127.0.0.1", 8080),
        my_context,
        index,
    );
}

fn index(ctx: Context, response: *http.Response, request: http.Request) !void {
    _ = request;
    try response.writer().print("{s}", .{ctx.data});
}
```

More examples can be found in the [examples](examples) folder.

## Building

Apple Pie is being developed on Zig's master branch and tries to keep up-to-date with its latest development.

To build Apple Pie a simple
`zig build` will suffice.

To build any of the examples, use the following:
```
zig build example -Dexample=<example_name>
```
it will appear in `zig-out/bin/example_name`
