config: writing how the config file should look

server/BUILD.bazel

@@ -1,13 +0,0 @@
-load("@io_bazel_rules_go//go:def.bzl", "go_library")
-
-go_library(
-    name = "server",
-    srcs = [
-        "config.go",
-        "packet.go",
-        "server.go",
-    ],
-    importpath = "git.wntrmute.dev/kyle/kdhcp/server",
-    visibility = ["//visibility:public"],
-    deps = ["//log"],
-)

server/config.go

@@ -1,19 +0,0 @@
-package server
-
-const (
-	DefaultPort          = 67
-	DefaultMaxPacketSize = 512
-	DefaultNetwork       = "udp4"
-)
-
-type Config struct {
-	Port          int
-	MaxPacketSize int
-}
-
-func DefaultConfig() *Config {
-	return &Config{
-		Port:          DefaultPort,
-		MaxPacketSize: DefaultMaxPacketSize,
-	}
-}

server/packet.go

@@ -1,14 +0,0 @@
-package server
-
-import (
-	"net"
-
-	"github.com/insomniacslk/dhcp/dhcpv4"
-)
-
-type Packet struct {
-	Data []byte
-	Addr net.Addr
-
-	Raw *dhcpv4.DHCPv4
-}

server/server.go

@@ -1,67 +0,0 @@
-package server
-
-import (
-	"fmt"
-	"net"
-
-	"git.wntrmute.dev/kyle/kdhcp/log"
-	"github.com/insomniacslk/dhcp/dhcpv4"
-)
-
-type Server struct {
-	cfg  *Config
-	conn net.PacketConn
-}
-
-func (srv *Server) Listen() (err error) {
-	if srv.conn != nil {
-		srv.conn.Close()
-	}
-
-	log.Debugf("attempting to set up packet listener on %s 0.0.0.0:%d", DefaultNetwork, srv.cfg.Port)
-	srv.conn, err = net.ListenPacket(DefaultNetwork, fmt.Sprintf(":%d", srv.cfg.Port))
-	if err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func (srv *Server) Close() error {
-	if srv.conn != nil {
-		return srv.conn.Close()
-	}
-	return nil
-}
-
-func (srv *Server) ReadFrom() (*Packet, error) {
-	b := make([]byte, srv.cfg.MaxPacketSize)
-	n, addr, err := srv.conn.ReadFrom(b)
-	if err != nil {
-		return nil, err
-	}
-
-	packet := &Packet{
-		Data: b[:n],
-		Addr: addr,
-	}
-	packet.Raw, err = dhcpv4.FromBytes(b[:n])
-	if err != nil {
-		return packet, err
-	}
-
-	return packet, nil
-}
-
-func NewServer(cfg *Config) (*Server, error) {
-	srv := &Server{
-		cfg: cfg,
-	}
-
-	err := srv.Listen()
-	if err != nil {
-		return nil, err
-	}
-
-	return srv, nil
-}