zig http ok

1.zig-http-ok-readme.txt

zig build-exe main.zig -O ReleaseSmall

ls -lh
total 56K
-rw-r--r-- 1 srm srm 221 Aug 29 13:21 Dockerfile
-rwxr-xr-x 1 srm srm 17K Aug 29 15:58 main
-rw-r--r-- 1 srm srm 28K Aug 29 15:58 main.o
-rw-r--r-- 1 srm srm 665 Aug 29 15:39 main.zig

ldd main
        not a dynamic executable

Dockerfile

FROM chainguard/zig AS builder
WORKDIR /opt

COPY main.zig .
RUN zig build-exe main.zig -O ReleaseSmall

FROM scratch

COPY --from=builder /opt/main /usr/bin/main

ENTRYPOINT ["main"]

main.zig

const std = @import("std");
const net = std.net;
const posix = std.posix;

pub fn main() anyerror!void {
    _ = std.posix.Sigaction{
        .handler = .{ .handler = sigint_handler },
        .mask = std.posix.empty_sigset,
        .flags = 0,
    };

    const localhost = net.Address.parseIp("0.0.0.0", 8080) catch unreachable;

    var server = try localhost.listen(.{});

    while (server.accept()) |client| {
        try client.stream.writer().print("HTTP/1.1 200 OK\r\nContent-Length: 2\r\n\r\nOK", .{});
        client.stream.close();
    } else |err| {
        return err;
    }
}

fn sigint_handler(_: i32) callconv(.C) void {
    std.process.exit(1);
}