Merge pull request #1495 from AkihiroSuda/fix-1488

Use net.JoinHostPort

Author: AkihiroSuda

pkg/hostagent/dns/dns.go

@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"net"
 	"runtime"
+	"strconv"
 	"strings"
 	"time"
 
@@ -318,7 +319,7 @@ func (h *Handler) handleDefault(w dns.ResponseWriter, req *dns.Msg) {
 	logrus.Tracef("handleDefault for %v", req)
 	for _, client := range h.clients {
 		for _, srv := range h.clientConfig.Servers {
-			addr := fmt.Sprintf("%s:%s", srv, h.clientConfig.Port)
+			addr := net.JoinHostPort(srv, h.clientConfig.Port)
 			reply, _, err := client.Exchange(req, addr)
 			if err != nil {
 				logrus.WithError(err).Debugf("handleDefault failed to perform a synchronous query with upstream [%v]", addr)
@@ -378,9 +379,9 @@ func listenAndServe(network Network, opts ServerOptions) (*dns.Server, error) {
 	// always enable reply truncate for UDP
 	if network == UDP {
 		opts.HandlerOptions.TruncateReply = true
-		addr = fmt.Sprintf("%s:%d", opts.Address, opts.UDPPort)
+		addr = net.JoinHostPort(opts.Address, strconv.Itoa(opts.UDPPort))
 	} else {
-		addr = fmt.Sprintf("%s:%d", opts.Address, opts.TCPPort)
+		addr = net.JoinHostPort(opts.Address, strconv.Itoa(opts.TCPPort))
 	}
 	h, err := NewHandler(opts.HandlerOptions)
 	if err != nil {

pkg/networks/gvisor.go

@@ -55,7 +55,7 @@ func StartGVisorNetstack(ctx context.Context, gVisorOpts *GVisorNetstackOpts) {
 			SlirpIPAddress: opts.MacAddress,
 		},
 		Forwards: map[string]string{
-			fmt.Sprintf("127.0.0.1:%d", opts.SSHLocalPort): fmt.Sprintf("%s:22", SlirpIPAddress),
+			fmt.Sprintf("127.0.0.1:%d", opts.SSHLocalPort): net.JoinHostPort(SlirpIPAddress, "22"),
 		},
 		DNS:              []types.Zone{},
 		DNSSearchDomains: searchDomains(),

pkg/osutil/dns_darwin.go

@@ -2,6 +2,7 @@ package osutil
 
 import (
 	"fmt"
+	"net"
 	"strings"
 
 	"github.com/lima-vm/lima/pkg/sysprof"
@@ -31,9 +32,9 @@ func proxyURL(proxy string, port interface{}) string {
 		proxy = "http://" + proxy
 	}
 	if portNumber, ok := port.(float64); ok && portNumber != 0 {
-		proxy = fmt.Sprintf("%s:%.0f", proxy, portNumber)
+		proxy = net.JoinHostPort(proxy, fmt.Sprintf("%.0f", portNumber))
 	} else if portString, ok := port.(string); ok && portString != "" {
-		proxy = fmt.Sprintf("%s:%s", proxy, portString)
+		proxy = net.JoinHostPort(proxy, portString)
 	}
 	return proxy
 }