zuws

Opinionated zig bindings for uWebsockets.

Installation

zuws is available using the zig fetch command.

zig fetch --save git+https://github.com/harmony-co/zuws

To add it to your project, after running the command above add the following to your build.zig file:

const zuws = b.dependency("zuws", .{
    .target = target,
    .optimize = optimize,
});

exe.root_module.addImport("zuws", zuws.module("zuws"));

NOTE You can disable the default debug logs by passing .debug_logs = false as an option.

Using the C bindings

You can import the C bindings directly instead of the zuws wrapper by using the following:

exe.root_module.addImport("uws", zuws.module("uws"));

Usage

const uws = @import("zuws");
const App = uws.App;
const Request = uws.Request;
const Response = uws.Response;

pub fn main() !void {
    const app: App = try .init();
    defer app.deinit();

    try app.get("/hello", hello)
        .listen(3000, null);
}

fn hello(res: *Response, req: *Request) void {
    _ = req;
    const str = "Hello World!\n";
    res.end(str, false);
}

Grouping

Grouping is not something provided by uws itself and instead is an abstraction we provide to aid developers.

The grouping API has a comptime and a runtime variant, most of the time you will want to use the comptime variant, but for the rare cases where adding routes at runtime dynamically is needed the functionality is there.

Creating groups at comptime

const app: App = try .init();
defer app.deinit();

const my_group = App.Group.initComptime("/v1")
    .get("/example", someHandler);

// This will create the following route:
// /v1/example
app.comptimeGroup(my_group);

Creating groups at runtime

const app: App = try .init();
defer app.deinit();

var gpa: std.heap.GeneralPurposeAllocator(.{}) = .init;
const allocator = gpa.allocator();

var my_group = App.Group.init(allocator, "/v1");
try my_group.get("/example", someHandler);

// This will create the following route:
// /v1/example
try app.group(my_group);

// We highly recommend you deinit the group
// after you don't need it anymore
my_group.deinit();

Combining groups together

We provide 2 different ways of combining groups together.

Grouping

const app: App = try .init();
defer app.deinit();

const api = App.Group.initComptime("/api");
const v1 = App.Group.initComptime("/v1")
    .get("/example", someHandler);

_ = api.group(v1);

// This will create the following route:
// /api/v1/example
app.comptimeGroup(api);

Merging

const app: App = try .init();
defer app.deinit();

const v1 = App.Group.initComptime("/v1")
    .get("/example", someHandler);
const v2 = App.Group.initComptime("/v2");

_ = v2.merge(v1);

// This will create the following route:
// /v2/example
app.comptimeGroup(v2);

Running the Examples

To run the provided examples in zuws you can clone the repository (don't forget to initialize the submodules), and run the following command:

zig build example -- <example-name>

You can also generate the assembly of a specific example using the following:

zig build example-asm -- <example-name>