chore: move legacy unused WG tunnel and client connector to experiment/wg

experiment/go.mod

@@ -19,16 +19,21 @@ require (
 	github.com/siderolabs/discovery-api v0.1.4
 	github.com/siderolabs/discovery-client v0.1.9
 	go.uber.org/zap v1.27.0
+	golang.org/x/net v0.43.0
+	golang.zx2c4.com/wireguard v0.0.0-20231211153847-12269c276173
+	google.golang.org/grpc v1.74.2
 )
 
 require (
 	github.com/Masterminds/goutils v1.1.1 // indirect
+	github.com/Masterminds/semver v1.5.0 // indirect
 	github.com/Masterminds/semver/v3 v3.4.0 // indirect
 	github.com/Masterminds/sprig/v3 v3.2.3 // indirect
 	github.com/armon/circbuf v0.0.0-20190214190532-5111143e8da2 // indirect
 	github.com/armon/go-metrics v0.4.1 // indirect
 	github.com/armon/go-radix v1.0.0 // indirect
 	github.com/bgentry/speakeasy v0.2.0 // indirect
+	github.com/caarlos0/go-version v0.2.2 // indirect
 	github.com/cenkalti/backoff/v4 v4.3.0 // indirect
 	github.com/cespare/xxhash v1.1.0 // indirect
 	github.com/cespare/xxhash/v2 v2.3.0 // indirect
@@ -123,17 +128,17 @@ require (
 	golang.org/x/crypto v0.41.0 // indirect
 	golang.org/x/exp v0.0.0-20250408133849-7e4ce0ab07d0 // indirect
 	golang.org/x/mod v0.27.0 // indirect
-	golang.org/x/net v0.43.0 // indirect
 	golang.org/x/sync v0.20.0 // indirect
 	golang.org/x/sys v0.45.0 // indirect
 	golang.org/x/text v0.28.0 // indirect
+	golang.org/x/time v0.11.0 // indirect
 	golang.org/x/tools v0.36.0 // indirect
-	golang.zx2c4.com/wireguard v0.0.0-20231211153847-12269c276173 // indirect
+	golang.zx2c4.com/wintun v0.0.0-20230126152724-0fa3db229ce2 // indirect
 	golang.zx2c4.com/wireguard/wgctrl v0.0.0-20230429144221-925a1e7659e6 // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20250528174236-200df99c418a // indirect
-	google.golang.org/grpc v1.74.2 // indirect
 	google.golang.org/protobuf v1.36.9 // indirect
 	gotest.tools/v3 v3.5.2 // indirect
+	gvisor.dev/gvisor v0.0.0-20230927004350-cbd86285d259 // indirect
 	lukechampine.com/blake3 v1.3.0 // indirect
 )
 

experiment/go.sum

@@ -5,6 +5,8 @@ github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03
 github.com/DataDog/datadog-go v3.2.0+incompatible/go.mod h1:LButxg5PwREeZtORoXG3tL4fMGNddJ+vMq1mwgfaqoQ=
 github.com/Masterminds/goutils v1.1.1 h1:5nUrii3FMTL5diU80unEVvNevw1nH4+ZV4DSLVJLSYI=
 github.com/Masterminds/goutils v1.1.1/go.mod h1:8cTjp+g8YejhMuvIA5y2vz3BpJxksy863GQaJW2MFNU=
+github.com/Masterminds/semver v1.5.0 h1:H65muMkzWKEuNDnfl9d70GUjFniHKHRbFPGBuZ3QEww=
+github.com/Masterminds/semver v1.5.0/go.mod h1:MB6lktGJrhw8PrUyiEoblNEGEQ+RzHPF078ddwwvV3Y=
 github.com/Masterminds/semver/v3 v3.1.1/go.mod h1:VPu/7SZ7ePZ3QOrcuXROw5FAcLl4a0cBrbBpGY/8hQs=
 github.com/Masterminds/semver/v3 v3.2.0/go.mod h1:qvl/7zhW3nngYb5+80sSMF+FG2BjYrf8m9wsX0PNOMQ=
 github.com/Masterminds/semver/v3 v3.4.0 h1:Zog+i5UMtVoCU8oKka5P7i9q9HgrJeGzI9SA1Xbatp0=
@@ -38,6 +40,8 @@ github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6r
 github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs=
 github.com/bgentry/speakeasy v0.2.0 h1:tgObeVOf8WAvtuAX6DhJ4xks4CFNwPDZiqzGqIHE51E=
 github.com/bgentry/speakeasy v0.2.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs=
+github.com/caarlos0/go-version v0.2.2 h1:5r+nlrg4H2wOVwWjqRqRRIRbZ7ytRmjC9xoMIP0a5kQ=
+github.com/caarlos0/go-version v0.2.2/go.mod h1:X+rI5VAtJDpcjCjeEIXpxGa5+rTcgur1FK66wS0/944=
 github.com/cenkalti/backoff/v4 v4.3.0 h1:MyRJ/UdXutAwSAT+s3wNd7MfTIcy71VQueUuFK343L8=
 github.com/cenkalti/backoff/v4 v4.3.0/go.mod h1:Y3VNntkOUPxTVeUxJ/G5vcM//AlwfmyYozVcomhLiZE=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
@@ -707,6 +711,8 @@ golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
 golang.org/x/text v0.4.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
 golang.org/x/text v0.28.0 h1:rhazDwis8INMIwQ4tpjLDzUhx6RlXqZNPEM0huQojng=
 golang.org/x/text v0.28.0/go.mod h1:U8nCwOR8jO/marOQ0QbDiOngZVEBB7MAiitBuMjXiNU=
+golang.org/x/time v0.11.0 h1:/bpjEDfN9tkoN/ryeYHnv5hcMlc8ncjMcM4XBk5NWV0=
+golang.org/x/time v0.11.0/go.mod h1:CDIdPxbZBQxdj6cxyCIdrNogrJKMJ7pr37NYpMcMDSg=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY=
@@ -725,6 +731,8 @@ golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8T
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.zx2c4.com/wintun v0.0.0-20230126152724-0fa3db229ce2 h1:B82qJJgjvYKsXS9jeunTOisW56dUokqW/FOteYJJ/yg=
+golang.zx2c4.com/wintun v0.0.0-20230126152724-0fa3db229ce2/go.mod h1:deeaetjYA+DHMHg+sMSMI58GrEteJUUzzw7en6TJQcI=
 golang.zx2c4.com/wireguard v0.0.0-20231211153847-12269c276173 h1:/jFs0duh4rdb8uIfPMv78iAJGcPKDeqAFnaLBropIC4=
 golang.zx2c4.com/wireguard v0.0.0-20231211153847-12269c276173/go.mod h1:tkCQ4FQXmpAgYVh++1cq16/dH4QJtmvpRv19DWGAHSA=
 golang.zx2c4.com/wireguard/wgctrl v0.0.0-20230429144221-925a1e7659e6 h1:CawjfCvYQH2OU3/TnxLx97WDSUDRABfT18pCOYwc2GE=
@@ -776,6 +784,8 @@ gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gotest.tools/v3 v3.5.2 h1:7koQfIKdy+I8UTetycgUqXWSDwpgv193Ka+qRsmBY8Q=
 gotest.tools/v3 v3.5.2/go.mod h1:LtdLGcnqToBH83WByAAi/wiwSFCArdFIUV/xxN4pcjA=
+gvisor.dev/gvisor v0.0.0-20230927004350-cbd86285d259 h1:TbRPT0HtzFP3Cno1zZo7yPzEEnfu8EjLfl6IU9VfqkQ=
+gvisor.dev/gvisor v0.0.0-20230927004350-cbd86285d259/go.mod h1:AVgIgHMwK63XvmAzWG9vLQ41YnVHN0du0tEC46fI7yY=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 lukechampine.com/blake3 v1.3.0 h1:sJ3XhFINmHSrYCgl958hscfIa3bw8x4DqMP3u1YvoYE=

experiment/wg/connector.go

@@ -1,4 +1,4 @@
-package connector
+package wg
 
 import (
 	"context"
@@ -7,39 +7,48 @@ import (
 	"net/netip"
 	"strconv"
 
-	"github.com/psviderski/uncloud/internal/cli/config"
 	"github.com/psviderski/uncloud/internal/grpcversion"
 	"github.com/psviderski/uncloud/internal/machine/constants"
 	"github.com/psviderski/uncloud/internal/machine/network"
-	"github.com/psviderski/uncloud/internal/machine/network/tunnel"
+	"github.com/psviderski/uncloud/internal/secret"
-	"github.com/psviderski/uncloud/pkg/client"
 	"golang.org/x/net/proxy"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/credentials/insecure"
 )
 
+// Machine describes a remote machine that the experimental connector can reach.
+type Machine struct {
+	Host      string
+	PublicKey secret.Secret
+}
+
+type User interface {
+	ManagementIP() netip.Addr
+	PrivateKey() secret.Secret
+}
+
 // WireGuardConnector establishes a connection to the cluster API through a WireGuard tunnel
 // to one of the cluster machines.
 type WireGuardConnector struct {
-	user     *client.User
+	user     User
-	machines []config.MachineConnection
+	machines []Machine
-	tun      *tunnel.Tunnel
+	tun      *Tunnel
 }
 
-func NewWireGuardConnector(user *client.User, machines []config.MachineConnection) *WireGuardConnector {
+func NewWireGuardConnector(user User, machines []Machine) *WireGuardConnector {
 	return &WireGuardConnector{
 		user:     user,
 		machines: machines,
 	}
 }
 
-// TODO: handle context cancelation.
+// TODO: handle context cancellation.
 func (c *WireGuardConnector) Connect(ctx context.Context) (*grpc.ClientConn, error) {
 	if len(c.machines) == 0 {
 		return nil, fmt.Errorf("no machines to connect to")
 	}
 	// TODO: iterate over machines and try to connect to each one until successful.
-	//  For now, try to connect to only the first machine.
+	// For now, try to connect to only the first machine.
 	machine := c.machines[0]
 	endpointIPs, err := net.LookupIP(machine.Host)
 	if err != nil {
@@ -49,25 +58,24 @@ func (c *WireGuardConnector) Connect(ctx context.Context) (*grpc.ClientConn, err
 	if err != nil {
 		return nil, fmt.Errorf("parse IP address %q: %w", endpointIPs[0].String(), err)
 	}
-	endpoint := netip.AddrPortFrom(endpointAddr, tunnel.DefaultEndpointPort)
+	endpoint := netip.AddrPortFrom(endpointAddr, DefaultEndpointPort)
 	machineManagementIP := network.ManagementIP(machine.PublicKey)
 	machineAPIAddr := net.JoinHostPort(machineManagementIP.String(), strconv.Itoa(constants.MachineAPIPort))
 
-	tunCfg := &tunnel.Config{
+	tunCfg := &Config{
 		LocalAddress:    c.user.ManagementIP(),
 		LocalPrivateKey: c.user.PrivateKey(),
 		RemotePublicKey: machine.PublicKey,
 		RemoteNetwork:   netip.PrefixFrom(machineManagementIP, 128),
 		Endpoint:        endpoint,
 	}
-	if c.tun, err = tunnel.Connect(tunCfg); err != nil {
+	if c.tun, err = Connect(tunCfg); err != nil {
 		return nil, fmt.Errorf("establish WireGuard tunnel to %q: %w", endpoint, err)
 	}
 
 	conn, err := grpc.NewClient(
 		machineAPIAddr,
 		grpc.WithTransportCredentials(insecure.NewCredentials()),
-		grpc.WithDefaultServiceConfig(defaultServiceConfig),
 		grpc.WithContextDialer(func(ctx context.Context, addr string) (net.Conn, error) {
 			return c.tun.DialContext(ctx, "tcp", addr)
 		}),

experiment/wg/tunnel.go

@@ -1,4 +1,4 @@
-package tunnel
+package wg
 
 import (
 	"context"
@@ -15,7 +15,7 @@ import (
 
 const (
 	DefaultEndpointPort = 51820
-	// DefaultKeepaliveInterval is sensible interval that works with a wide variety of firewalls.
+	// DefaultKeepaliveInterval is a sensible interval that works with a wide variety of firewalls.
 	DefaultKeepaliveInterval = 25 * time.Second
 )
 

go.mod

@@ -52,7 +52,6 @@ require (
 	golang.org/x/sync v0.20.0
 	golang.org/x/sys v0.45.0
 	golang.org/x/term v0.34.0
-	golang.zx2c4.com/wireguard v0.0.0-20231211153847-12269c276173
 	golang.zx2c4.com/wireguard/wgctrl v0.0.0-20230429144221-925a1e7659e6
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20250528174236-200df99c418a
 	google.golang.org/grpc v1.74.2
@@ -162,7 +161,6 @@ require (
 	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
 	github.com/golang/protobuf v1.5.4 // indirect
 	github.com/golang/snappy v0.0.4 // indirect
-	github.com/google/btree v1.1.2 // indirect
 	github.com/google/cel-go v0.20.1 // indirect
 	github.com/google/gnostic-models v0.6.8 // indirect
 	github.com/google/gofuzz v1.2.0 // indirect
@@ -336,14 +334,13 @@ require (
 	golang.org/x/text v0.28.0 // indirect
 	golang.org/x/time v0.11.0 // indirect
 	golang.org/x/tools v0.36.0 // indirect
-	golang.zx2c4.com/wintun v0.0.0-20230126152724-0fa3db229ce2 // indirect
+	golang.zx2c4.com/wireguard v0.0.0-20231211153847-12269c276173 // indirect
 	google.golang.org/genproto/googleapis/api v0.0.0-20250528174236-200df99c418a // indirect
 	gopkg.in/evanphx/json-patch.v4 v4.12.0 // indirect
 	gopkg.in/inf.v0 v0.9.1 // indirect
 	gopkg.in/ini.v1 v1.67.0 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
-	gvisor.dev/gvisor v0.0.0-20230927004350-cbd86285d259 // indirect
 	howett.net/plist v1.0.0 // indirect
 	k8s.io/api v0.32.3 // indirect
 	k8s.io/apimachinery v0.32.3 // indirect

go.sum

@@ -1210,8 +1210,6 @@ golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8T
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-golang.zx2c4.com/wintun v0.0.0-20230126152724-0fa3db229ce2 h1:B82qJJgjvYKsXS9jeunTOisW56dUokqW/FOteYJJ/yg=
-golang.zx2c4.com/wintun v0.0.0-20230126152724-0fa3db229ce2/go.mod h1:deeaetjYA+DHMHg+sMSMI58GrEteJUUzzw7en6TJQcI=
 golang.zx2c4.com/wireguard v0.0.0-20231211153847-12269c276173 h1:/jFs0duh4rdb8uIfPMv78iAJGcPKDeqAFnaLBropIC4=
 golang.zx2c4.com/wireguard v0.0.0-20231211153847-12269c276173/go.mod h1:tkCQ4FQXmpAgYVh++1cq16/dH4QJtmvpRv19DWGAHSA=
 golang.zx2c4.com/wireguard/wgctrl v0.0.0-20230429144221-925a1e7659e6 h1:CawjfCvYQH2OU3/TnxLx97WDSUDRABfT18pCOYwc2GE=
@@ -1286,8 +1284,6 @@ gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gotest.tools/v3 v3.5.2 h1:7koQfIKdy+I8UTetycgUqXWSDwpgv193Ka+qRsmBY8Q=
 gotest.tools/v3 v3.5.2/go.mod h1:LtdLGcnqToBH83WByAAi/wiwSFCArdFIUV/xxN4pcjA=
-gvisor.dev/gvisor v0.0.0-20230927004350-cbd86285d259 h1:TbRPT0HtzFP3Cno1zZo7yPzEEnfu8EjLfl6IU9VfqkQ=
-gvisor.dev/gvisor v0.0.0-20230927004350-cbd86285d259/go.mod h1:AVgIgHMwK63XvmAzWG9vLQ41YnVHN0du0tEC46fI7yY=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=

internal/cli/config/connection.go

@@ -7,8 +7,6 @@ import (
 	"net/netip"
 	"strconv"
 	"strings"
-
-	"github.com/psviderski/uncloud/internal/secret"
 )
 
 type MachineConnection struct {
@@ -23,10 +21,8 @@ type MachineConnection struct {
 	// The pointer is used to omit the field when not set. Otherwise, yaml marshalling includes an empty object.
 	TCP *netip.AddrPort `yaml:"tcp,omitempty"`
 	// Unix is the path to the machine's API unix socket.
-	Unix      string        `yaml:"unix,omitempty"`
+	Unix      string `yaml:"unix,omitempty"`
-	Host      string        `yaml:"host,omitempty"`
+	MachineID string `yaml:"machine_id,omitempty"`
-	PublicKey secret.Secret `yaml:"public_key,omitempty"`
-	MachineID string        `yaml:"machine_id,omitempty"`
 }
 
 func (c *MachineConnection) String() string {