chore: rename pkg to core (#9)

README.md

@@ -4,7 +4,7 @@ DNS written in Golang
 # how to use :
 
 ```
-go run ./cmd/main.go
+go run main.go
 ```
 
 ### then:

pkg/resolver.go → core/resolver.go

@@ -1,4 +1,4 @@
-package dns
+package core
 
 import (
 	"bufio"
@@ -11,7 +11,8 @@ import (
 	"golang.org/x/net/dns/dnsmessage"
 )
 
-const ROOT_SERVERS = "198.41.0.4,199.9.14.201,192.33.4.12,199.7.91.13,192.203.230.10,192.5.5.241,192.112.36.4,198.97.190.53"
+const ROOTSERVERS = `198.41.0.4,199.9.14.201,192.33.4.12,199.7.91.13,192.203.230.10,192.5.5.241,
+	192.112.36.4,198.97.190.53`
 
 func HandlePacket(pc net.PacketConn, addr net.Addr, buf []byte) {
 	//* send incoming packets to handlePacket function
@@ -115,7 +116,11 @@ func dnsQuery(servers []net.IP, question dnsmessage.Question) (*dnsmessage.Messa
 		if !newResolverServersFound {
 			for _, nameserver := range nameservers {
 				if !newResolverServersFound {
-					response, err := dnsQuery(getRootServers(), dnsmessage.Question{Name: dnsmessage.MustNewName(nameserver), Type: dnsmessage.TypeA, Class: dnsmessage.ClassINET})
+					response, err := dnsQuery(getRootServers(),
+						dnsmessage.Question{
+							Name: dnsmessage.MustNewName(nameserver),
+							Type: dnsmessage.TypeA, Class: dnsmessage.ClassINET,
+						})
 					if err != nil {
 						fmt.Printf("warning: lookup of nameserver %s failed: %err\n", nameserver, err)
 					} else {
@@ -212,10 +217,10 @@ func outgoingDNSQuery(servers []net.IP, question dnsmessage.Question) (*dnsmessa
 	return &p, &header, nil
 }
 
-// * make a loop over ROOT SERVERS list and return a slice of root servers ip
+// * make a loop over ROOT SERVERS list and return a slice of root servers ip.
 func getRootServers() []net.IP {
 	rootServers := []net.IP{}
-	for _, rootServer := range strings.Split(ROOT_SERVERS, ",") {
+	for _, rootServer := range strings.Split(ROOTSERVERS, ",") {
 		rootServers = append(rootServers, net.ParseIP(rootServer))
 	}
 	return rootServers

pkg/resolver_test.go → core/resolver_test.go

@@ -1,4 +1,4 @@
-package dns
+package core
 
 import (
 	"crypto/rand"
@@ -24,15 +24,19 @@ func (m *MockPacketConn) Close() error {
 func (m *MockPacketConn) ReadFrom(p []byte) (n int, addr net.Addr, err error) {
 	return 0, nil, nil
 }
+
 func (m *MockPacketConn) LocalAddr() net.Addr {
 	return nil
 }
+
 func (m *MockPacketConn) SetDeadline(t time.Time) error {
 	return nil
 }
+
 func (m *MockPacketConn) SetReadDeadline(t time.Time) error {
 	return nil
 }
+
 func (m *MockPacketConn) SetWriteDeadline(t time.Time) error {
 	return nil
 }
@@ -80,7 +84,7 @@ func TestOutgoingDnsQuery(t *testing.T) {
 		Type:  dnsmessage.TypeNS,
 		Class: dnsmessage.ClassINET,
 	}
-	rootServers := strings.Split(ROOT_SERVERS, ",")
+	rootServers := strings.Split(ROOTSERVERS, ",")
 	if len(rootServers) == 0 {
 		t.Fatalf("No root servers found")
 	}

main.go

@@ -5,7 +5,7 @@ import (
 	"log"
 	"net"
 
-	"github.com/kehiy/dns-server/pkg"
+	"github.com/kehiy/dns-server/core"
 )
 
 func main() {
@@ -22,6 +22,6 @@ func main() {
 			fmt.Printf("Connection error [%s]: %s\n", addr.String(), err)
 			continue
 		}
-		go dns.HandlePacket(p, addr, buf[:n])
+		go core.HandlePacket(p, addr, buf[:n])
 	}
 }