srctree

Gregory Mullen parent 76f8bdbe 026a2374
mv Header to Header.zig

filename was Deleted added: 58, removed: 55, total 3

@@ -0,0 +1,55 @@

pub const Header = packed struct(u96) {

arcount: u16,

nscount: u16,

ancount: u16,

qdcount: u16,

rcode: RCode,

z: u3 = 0,

ra: bool,

rd: bool,

tc: bool,

aa: bool,

opcode: u4,

qr: bool,

id: u16,

pub const RCode = enum(u4) {

success = 0,

format,

server,

name,

not_implemented,

refused,

_, // Reserved for future use

};

pub fn fromBytes(bytes: [12]u8) Header {

const id: u16 = @byteSwap(@as(u16, @bitCast(bytes[0..2].*)));

const hbits: u8 = bytes[2];

const lbits: u8 = bytes[3];

return .{

.id = id,

.qr = 0x80 & hbits != 0,

.opcode = @truncate((0x70 & hbits) >> 3),

.aa = 0x4 & hbits != 0,

.tc = 0x2 & hbits != 0,

.rd = 0x1 & hbits != 0,

.ra = 0x80 & lbits != 0,

.rcode = @enumFromInt(0xf & (lbits)),

.qdcount = @byteSwap(@as(u16, @bitCast(bytes[4..6].*))),

.ancount = @byteSwap(@as(u16, @bitCast(bytes[6..8].*))),

.nscount = @byteSwap(@as(u16, @bitCast(bytes[8..10].*))),

.arcount = @byteSwap(@as(u16, @bitCast(bytes[10..12].*))),

};

}

pub fn write(h: Header, w: *std.io.AnyWriter) !usize {

try w.writeInt(u96, @bitCast(h), .big);

std.debug.assert(@sizeOf(Header) == 16);

std.debug.assert(@divExact(@typeInfo(u96).int.bits, 8) == 12);

return 12;

}

};

const std = @import("std");

src/Message.zig added: 58, removed: 55, total 3

@@ -3,59 +3,7 @@ const Message = @This();

header: Header,

bytes: []const u8,