refactor: add `:` prefix to ports during config unmarshaling

config/config.go

@@ -170,6 +170,13 @@ func (l *ListenConfig) UnmarshalText(data []byte) error {
 
 	*l = strings.Split(addresses, ",")
 
+	// Prefix all ports with :
+	for i, addr := range *l {
+		if !strings.ContainsRune(addr, ':') {
+			(*l)[i] = ":" + addr
+		}
+	}
+
 	return nil
 }
 

config/config_test.go

@@ -462,7 +462,7 @@ bootstrapDns:
 				err := l.UnmarshalText([]byte("55,:56"))
 				Expect(err).Should(Succeed())
 				Expect(*l).Should(HaveLen(2))
-				Expect(*l).Should(ContainElements("55", ":56"))
+				Expect(*l).Should(ContainElements(":55", ":56"))
 			})
 		})
 	})
@@ -958,7 +958,7 @@ bootstrapDns:
 })
 
 func defaultTestFileConfig(config *Config) {
-	Expect(config.Ports.DNS).Should(Equal(ListenConfig{"55553", ":55554", "[::1]:55555"}))
+	Expect(config.Ports.DNS).Should(Equal(ListenConfig{":55553", ":55554", "[::1]:55555"}))
 	Expect(config.Upstreams.Init.Strategy).Should(Equal(InitStrategyFailOnError))
 	Expect(config.Upstreams.UserAgent).Should(Equal("testBlocky"))
 	Expect(config.Upstreams.Groups["default"]).Should(HaveLen(3))

helpertest/helper.go

@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"context"
 	"fmt"
+	"net"
 	"net/http"
 	"net/http/httptest"
 	"os"
@@ -29,20 +30,27 @@ const (
 	DS    = dns.Type(dns.TypeDS)
 )
 
-// GetIntPort returns an port for the current testing
+// GetIntPort returns a port for the current testing
 // process by adding the current ginkgo parallel process to
-// the base port and returning it as int
+// the base port and returning it as int.
 func GetIntPort(port int) int {
 	return port + ginkgo.GinkgoParallelProcess()
 }
 
-// GetStringPort returns an port for the current testing
+// GetStringPort returns a port for the current testing
 // process by adding the current ginkgo parallel process to
-// the base port and returning it as string
+// the base port and returning it as string.
 func GetStringPort(port int) string {
 	return fmt.Sprintf("%d", GetIntPort(port))
 }
 
+// GetHostPort returns a host:port string for the current testing
+// process by adding the current ginkgo parallel process to
+// the base port and returning it as string.
+func GetHostPort(host string, port int) string {
+	return net.JoinHostPort(host, GetStringPort(port))
+}
+
 // TempFile creates temp file with passed data
 func TempFile(data string) *os.File {
 	f, err := os.CreateTemp("", "prefix")

server/server.go

@@ -69,14 +69,6 @@ func tlsCipherSuites() []uint16 {
 	return tlsCipherSuites
 }
 
-func getServerAddress(addr string) string {
-	if !strings.Contains(addr, ":") {
-		addr = fmt.Sprintf(":%s", addr)
-	}
-
-	return addr
-}
-
 type NewServerFunc func(address string) (*dns.Server, error)
 
 func retrieveCertificate(cfg *config.Config) (cert tls.Certificate, err error) {
@@ -204,7 +196,7 @@ func createServers(cfg *config.Config, tlsCfg *tls.Config) ([]*dns.Server, error
 
 	addServers := func(newServer NewServerFunc, addresses config.ListenConfig) error {
 		for _, address := range addresses {
-			server, err := newServer(getServerAddress(address))
+			server, err := newServer(address)
 			if err != nil {
 				return err
 			}
@@ -245,7 +237,7 @@ func newTCPListeners(proto string, addresses config.ListenConfig) ([]net.Listene
 	listeners := make([]net.Listener, 0, len(addresses))
 
 	for _, address := range addresses {
-		listener, err := net.Listen("tcp", getServerAddress(address))
+		listener, err := net.Listen("tcp", address)
 		if err != nil {
 			return nil, fmt.Errorf("start %s listener on %s failed: %w", proto, address, err)
 		}

server/server_test.go

@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"context"
 	"encoding/base64"
+	"fmt"
 	"io"
 	"net"
 	"net/http"
@@ -43,7 +44,7 @@ var (
 )
 
 var _ = BeforeSuite(func() {
-	baseURL = "http://localhost:" + GetStringPort(httpBasePort) + "/"
+	baseURL = fmt.Sprintf("http://%s/", GetHostPort("localhost", httpBasePort))
 	queryURL = baseURL + "dns-query"
 	var upstreamGoogle, upstreamFritzbox, upstreamClient config.Upstream
 	ctx, cancelFn := context.WithCancel(context.Background())
@@ -146,10 +147,10 @@ var _ = BeforeSuite(func() {
 		},
 
 		Ports: config.Ports{
-			DNS:   config.ListenConfig{GetStringPort(dnsBasePort)},
-			TLS:   config.ListenConfig{GetStringPort(tlsBasePort)},
-			HTTP:  config.ListenConfig{GetStringPort(httpBasePort)},
-			HTTPS: config.ListenConfig{GetStringPort(httpsBasePort)},
+			DNS:   config.ListenConfig{GetHostPort("", dnsBasePort)},
+			TLS:   config.ListenConfig{GetHostPort("", tlsBasePort)},
+			HTTP:  config.ListenConfig{GetHostPort("", httpBasePort)},
+			HTTPS: config.ListenConfig{GetHostPort("", httpsBasePort)},
 		},
 		CertFile: certPem.Path,
 		KeyFile:  keyPem.Path,
@@ -633,7 +634,7 @@ var _ = Describe("Running DNS server", func() {
 					},
 					Blocking: config.Blocking{BlockType: "zeroIp"},
 					Ports: config.Ports{
-						DNS: config.ListenConfig{"127.0.0.1:" + GetStringPort(dnsBasePort2)},
+						DNS: config.ListenConfig{GetHostPort("127.0.0.1", dnsBasePort2)},
 					},
 				})
 
@@ -677,7 +678,7 @@ var _ = Describe("Running DNS server", func() {
 					},
 					Blocking: config.Blocking{BlockType: "zeroIp"},
 					Ports: config.Ports{
-						DNS: config.ListenConfig{"127.0.0.1:" + GetStringPort(dnsBasePort2)},
+						DNS: config.ListenConfig{GetHostPort("127.0.0.1", dnsBasePort2)},
 					},
 				})
 
@@ -751,7 +752,7 @@ var _ = Describe("Running DNS server", func() {
 })
 
 func requestServer(request *dns.Msg) *dns.Msg {
-	conn, err := net.Dial("udp", ":"+GetStringPort(dnsBasePort))
+	conn, err := net.Dial("udp", GetHostPort("", dnsBasePort))
 	if err != nil {
 		Log().Fatal("could not connect to server: ", err)
 	}