single socket ice (#232)

Enables single socket for HOST and SRFLX candidates by utilizing pion.ice UDPMux
This commit is contained in:
Mikhail Bragin 2022-02-16 20:00:21 +01:00 committed by GitHub
parent 765d3a0ad0
commit e5dcd4753e
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
5 changed files with 107 additions and 40 deletions

View File

@ -4,6 +4,7 @@ import (
"context"
"fmt"
"math/rand"
"net"
"strings"
"sync"
"time"
@ -22,10 +23,13 @@ import (
)
// PeerConnectionTimeoutMax is a timeout of an initial connection attempt to a remote peer.
// E.g. this peer will wait PeerConnectionTimeoutMax for the remote peer to respond, if not successful then it will retry the connection attempt.
// E.g. this peer will wait PeerConnectionTimeoutMax for the remote peer to respond,
// if not successful then it will retry the connection attempt.
// Todo pass timeout at EnginConfig
const PeerConnectionTimeoutMax = 45000 //ms
const PeerConnectionTimeoutMin = 30000 //ms
const (
PeerConnectionTimeoutMax = 45000 // ms
PeerConnectionTimeoutMin = 30000 // ms
)
const WgPort = 51820
@ -33,14 +37,23 @@ const WgPort = 51820
type EngineConfig struct {
WgPort int
WgIfaceName string
// WgAddr is a Wireguard local address (Wiretrustee Network IP)
WgAddr string
// WgPrivateKey is a Wireguard private key of our peer (it MUST never leave the machine)
WgPrivateKey wgtypes.Key
// IFaceBlackList is a list of network interfaces to ignore when discovering connection candidates (ICE related)
IFaceBlackList map[string]struct{}
PreSharedKey *wgtypes.Key
// UDPMuxPort default value 0 - the system will pick an available port
UDPMuxPort int
// UDPMuxSrflxPort default value 0 - the system will pick an available port
UDPMuxSrflxPort int
}
// Engine is a mechanism responsible for reacting on Signal and Management stream events and managing connections to the remote peers.
@ -67,6 +80,11 @@ type Engine struct {
wgInterface iface.WGIface
udpMux ice.UDPMux
udpMuxSrflx ice.UniversalUDPMux
udpMuxConn *net.UDPConn
udpMuxConnSrflx *net.UDPConn
// networkSerial is the latest Serial (state ID) of the network sent by the Management service
networkSerial uint64
}
@ -78,7 +96,10 @@ type Peer struct {
}
// NewEngine creates a new Connection Engine
func NewEngine(signalClient signal.Client, mgmClient mgm.Client, config *EngineConfig, cancel context.CancelFunc, ctx context.Context) *Engine {
func NewEngine(
signalClient signal.Client, mgmClient mgm.Client, config *EngineConfig,
cancel context.CancelFunc, ctx context.Context,
) *Engine {
return &Engine{
signal: signalClient,
mgmClient: mgmClient,
@ -111,6 +132,30 @@ func (e *Engine) Stop() error {
}
}
if e.udpMux != nil {
if err := e.udpMux.Close(); err != nil {
log.Debugf("close udp mux: %v", err)
}
}
if e.udpMuxSrflx != nil {
if err := e.udpMuxSrflx.Close(); err != nil {
log.Debugf("close server reflexive udp mux: %v", err)
}
}
if e.udpMuxConn != nil {
if err := e.udpMuxConn.Close(); err != nil {
log.Debugf("close udp mux connection: %v", err)
}
}
if e.udpMuxConnSrflx != nil {
if err := e.udpMuxConnSrflx.Close(); err != nil {
log.Debugf("close server reflexive udp mux connection: %v", err)
}
}
log.Infof("stopped Wiretrustee Engine")
return nil
@ -134,6 +179,21 @@ func (e *Engine) Start() error {
return err
}
e.udpMuxConn, err = net.ListenUDP("udp4", &net.UDPAddr{Port: e.config.UDPMuxPort})
if err != nil {
log.Errorf("failed listening on UDP port %d: [%s]", e.config.UDPMuxPort, err.Error())
return err
}
e.udpMuxConnSrflx, err = net.ListenUDP("udp4", &net.UDPAddr{Port: e.config.UDPMuxSrflxPort})
if err != nil {
log.Errorf("failed listening on UDP port %d: [%s]", e.config.UDPMuxSrflxPort, err.Error())
return err
}
e.udpMux = ice.NewUDPMuxDefault(ice.UDPMuxParams{UDPConn: e.udpMuxConn})
e.udpMuxSrflx = ice.NewUniversalUDPMuxDefault(ice.UniversalUDPMuxParams{UDPConn: e.udpMuxConnSrflx})
err = e.wgInterface.Create()
if err != nil {
log.Errorf("failed creating tunnel interface %s: [%s]", wgIfaceName, err.Error())
@ -154,7 +214,6 @@ func (e *Engine) Start() error {
// removePeers finds and removes peers that do not exist anymore in the network map received from the Management Service
func (e *Engine) removePeers(peersUpdate []*mgmProto.RemotePeerConfig) error {
currentPeers := make([]string, 0, len(e.peerConns))
for p := range e.peerConns {
currentPeers = append(currentPeers, p)
@ -209,7 +268,6 @@ func (e *Engine) removePeer(peerKey string) error {
// GetPeerConnectionStatus returns a connection Status or nil if peer connection wasn't found
func (e *Engine) GetPeerConnectionStatus(peerKey string) peer.ConnStatus {
conn, exists := e.peerConns[peerKey]
if exists && conn != nil {
return conn.Status()
@ -217,6 +275,7 @@ func (e *Engine) GetPeerConnectionStatus(peerKey string) peer.ConnStatus {
return -1
}
func (e *Engine) GetPeers() []string {
e.syncMsgMux.Lock()
defer e.syncMsgMux.Unlock()
@ -262,7 +321,6 @@ func signalCandidate(candidate ice.Candidate, myKey wgtypes.Key, remoteKey wgtyp
}
func signalAuth(uFrag string, pwd string, myKey wgtypes.Key, remoteKey wgtypes.Key, s signal.Client, isAnswer bool) error {
var t sProto.Body_Type
if isAnswer {
t = sProto.Body_ANSWER
@ -272,7 +330,8 @@ func signalAuth(uFrag string, pwd string, myKey wgtypes.Key, remoteKey wgtypes.K
msg, err := signal.MarshalCredential(myKey, remoteKey, &signal.Credential{
UFrag: uFrag,
Pwd: pwd}, t)
Pwd: pwd,
}, t)
if err != nil {
return err
}
@ -311,7 +370,6 @@ func (e *Engine) handleSync(update *mgmProto.SyncResponse) error {
}
return nil
}
// receiveManagementEvents connects to the Management Service event stream to receive updates from the management service
@ -371,7 +429,6 @@ func (e *Engine) updateTURNs(turns []*mgmProto.ProtectedHostConfig) error {
}
func (e *Engine) updateNetworkMap(networkMap *mgmProto.NetworkMap) error {
serial := networkMap.GetSerial()
if e.networkSerial > serial {
log.Debugf("received outdated NetworkMap with serial %d, ignoring", serial)
@ -455,7 +512,6 @@ func (e Engine) peerExists(peerKey string) bool {
}
func (e Engine) createPeerConn(pubKey string, allowedIPs string) (*peer.Conn, error) {
var stunTurn []*ice.URL
stunTurn = append(stunTurn, e.STUNs...)
stunTurn = append(stunTurn, e.TURNs...)
@ -481,6 +537,8 @@ func (e Engine) createPeerConn(pubKey string, allowedIPs string) (*peer.Conn, er
StunTurn: stunTurn,
InterfaceBlackList: interfaceBlacklist,
Timeout: timeout,
UDPMux: e.udpMux,
UDPMuxSrflx: e.udpMuxSrflx,
ProxyConfig: proxyConfig,
}
@ -515,11 +573,9 @@ func (e Engine) createPeerConn(pubKey string, allowedIPs string) (*peer.Conn, er
// receiveSignalEvents connects to the Signal Service event stream to negotiate connection with remote peers
func (e *Engine) receiveSignalEvents() {
go func() {
// connect to a stream of messages coming from the signal server
err := e.signal.Receive(func(msg *sProto.Message) error {
e.syncMsgMux.Lock()
defer e.syncMsgMux.Unlock()

View File

@ -256,6 +256,7 @@ func TestEngine_Sync(t *testing.T) {
select {
case <-timeout:
t.Fatalf("timeout while waiting for test to finish")
return
default:
}
@ -397,11 +398,12 @@ func createEngine(ctx context.Context, cancel context.CancelFunc, setupKey strin
ifaceName = fmt.Sprintf("wt%d", i)
}
wgPort := 33100 + i
conf := &EngineConfig{
WgIfaceName: ifaceName,
WgAddr: resp.PeerConfig.Address,
WgPrivateKey: key,
WgPort: 33100 + i,
WgPort: wgPort,
}
return NewEngine(signalClient, mgmtClient, conf, cancel, ctx), nil

View File

@ -2,12 +2,13 @@ package peer
import (
"context"
"github.com/pion/ice/v2"
log "github.com/sirupsen/logrus"
"github.com/wiretrustee/wiretrustee/client/internal/proxy"
"net"
"sync"
"time"
"github.com/pion/ice/v2"
log "github.com/sirupsen/logrus"
"github.com/wiretrustee/wiretrustee/client/internal/proxy"
)
// ConnConfig is a peer Connection configuration
@ -28,6 +29,9 @@ type ConnConfig struct {
Timeout time.Duration
ProxyConfig proxy.Config
UDPMux ice.UDPMux
UDPMuxSrflx ice.UniversalUDPMux
}
// IceCredentials ICE protocol credentials struct
@ -104,6 +108,8 @@ func (conn *Conn) reCreateAgent() error {
CandidateTypes: []ice.CandidateType{ice.CandidateTypeHost, ice.CandidateTypeServerReflexive, ice.CandidateTypeRelay},
FailedTimeout: &failedTimeout,
InterfaceFilter: interfaceFilter(conn.config.InterfaceBlackList),
UDPMux: conn.config.UDPMux,
UDPMuxSrflx: conn.config.UDPMuxSrflx,
})
if err != nil {
return err

12
go.mod
View File

@ -17,7 +17,7 @@ require (
github.com/spf13/cobra v1.3.0
github.com/spf13/pflag v1.0.5
github.com/vishvananda/netlink v1.1.0
golang.org/x/crypto v0.0.0-20211215153901-e495a2d5b3d3
golang.org/x/crypto v0.0.0-20220131195533-30dcbda58838
golang.org/x/sys v0.0.0-20211216021012-1d35b9e2eb4e
golang.zx2c4.com/wireguard v0.0.0-20211209221555-9c9e7e272434
golang.zx2c4.com/wireguard/wgctrl v0.0.0-20211215182854-7a385b3431de
@ -44,18 +44,18 @@ require (
github.com/mdlayher/netlink v1.4.2 // indirect
github.com/mdlayher/socket v0.0.0-20211102153432-57e3fa563ecb // indirect
github.com/nxadm/tail v1.4.8 // indirect
github.com/pion/dtls/v2 v2.0.12 // indirect
github.com/pion/dtls/v2 v2.1.2 // indirect
github.com/pion/logging v0.2.2 // indirect
github.com/pion/mdns v0.0.5 // indirect
github.com/pion/randutil v0.1.0 // indirect
github.com/pion/stun v0.3.5 // indirect
github.com/pion/transport v0.12.3 // indirect
github.com/pion/turn/v2 v2.0.5 // indirect
github.com/pion/transport v0.13.0 // indirect
github.com/pion/turn/v2 v2.0.7 // indirect
github.com/pion/udp v0.1.1 // indirect
github.com/pmezard/go-difflib v1.0.0 // indirect
github.com/vishvananda/netns v0.0.0-20191106174202-0a2b9b5464df // indirect
golang.org/x/mod v0.5.1 // indirect
golang.org/x/net v0.0.0-20211215060638-4ddde0e984e9 // indirect
golang.org/x/net v0.0.0-20220127200216-cd36cc0744dd // indirect
golang.org/x/text v0.3.8-0.20211105212822-18b340fc7af2 // indirect
golang.org/x/tools v0.1.8 // indirect
golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
@ -67,3 +67,5 @@ require (
gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect
honnef.co/go/tools v0.2.2 // indirect
)
replace github.com/pion/ice/v2 => github.com/wiretrustee/ice/v2 v2.1.21-0.20220216144753-138db20d36ad

25
go.sum
View File

@ -356,10 +356,8 @@ github.com/onsi/gomega v1.17.0/go.mod h1:HnhC7FXeEQY45zxNK3PPoIUhzk/80Xly9PcubAl
github.com/pascaldekloe/goe v0.0.0-20180627143212-57f6aae5913c/go.mod h1:lzWF7FIEvWOWxwDKqyGYQf6ZUaNfKdP144TG7ZOy1lc=
github.com/pascaldekloe/goe v0.1.0/go.mod h1:lzWF7FIEvWOWxwDKqyGYQf6ZUaNfKdP144TG7ZOy1lc=
github.com/pelletier/go-toml v1.9.4/go.mod h1:u1nR/EPcESfeI/szUZKdtJ0xRNbUoANCkoOuaOx1Y+c=
github.com/pion/dtls/v2 v2.0.12 h1:QMSvNht7FM/XDXij3Ic90SCbl5yL7kppeI4ghfF4in8=
github.com/pion/dtls/v2 v2.0.12/go.mod h1:5Pe3QJI0Ajsx+uCfxREeewGFlKYBzLrXe9ku7Y0oRXM=
github.com/pion/ice/v2 v2.1.17 h1:z7aBWgs85AEeRgtj0bHnCrShzaGnZ/RS4pMoRmbYxtY=
github.com/pion/ice/v2 v2.1.17/go.mod h1:M0MJ/tBR3IyDcaJv49hAiHEzaVBqWCV/MuWqIffBsrw=
github.com/pion/dtls/v2 v2.1.2 h1:22Q1Jk9L++Yo7BIf9130MonNPfPVb+YgdYLeyQotuAA=
github.com/pion/dtls/v2 v2.1.2/go.mod h1:o6+WvyLDAlXF7YiPB/RlskRoeK+/JtuaZa5emwQcWus=
github.com/pion/logging v0.2.2 h1:M9+AIj/+pxNsDfAT64+MAVgJO0rsyLnoJKCqf//DoeY=
github.com/pion/logging v0.2.2/go.mod h1:k0/tDVsRCX2Mb2ZEmTqNa7CWsQPc+YYCB7Q+5pahoms=
github.com/pion/mdns v0.0.5 h1:Q2oj/JB3NqfzY9xGZ1fPzZzK7sDSD8rZPOvcIQ10BCw=
@ -368,12 +366,11 @@ github.com/pion/randutil v0.1.0 h1:CFG1UdESneORglEsnimhUjf33Rwjubwj6xfiOXBa3mA=
github.com/pion/randutil v0.1.0/go.mod h1:XcJrSMMbbMRhASFVOlj/5hQial/Y8oH/HVo7TBZq+j8=
github.com/pion/stun v0.3.5 h1:uLUCBCkQby4S1cf6CGuR9QrVOKcvUwFeemaC865QHDg=
github.com/pion/stun v0.3.5/go.mod h1:gDMim+47EeEtfWogA37n6qXZS88L5V6LqFcf+DZA2UA=
github.com/pion/transport v0.10.1/go.mod h1:PBis1stIILMiis0PewDw91WJeLJkyIMcEk+DwKOzf4A=
github.com/pion/transport v0.12.2/go.mod h1:N3+vZQD9HlDP5GWkZ85LohxNsDcNgofQmyL6ojX5d8Q=
github.com/pion/transport v0.12.3 h1:vdBfvfU/0Wq8kd2yhUMSDB/x+O4Z9MYVl2fJ5BT4JZw=
github.com/pion/transport v0.12.3/go.mod h1:OViWW9SP2peE/HbwBvARicmAVnesphkNkCVZIWJ6q9A=
github.com/pion/turn/v2 v2.0.5 h1:iwMHqDfPEDEOFzwWKT56eFmh6DYC6o/+xnLAEzgISbA=
github.com/pion/turn/v2 v2.0.5/go.mod h1:APg43CFyt/14Uy7heYUOGWdkem/Wu4PhCO/bjyrTqMw=
github.com/pion/transport v0.13.0 h1:KWTA5ZrQogizzYwPEciGtHPLwpAjE91FgXnyu+Hv2uY=
github.com/pion/transport v0.13.0/go.mod h1:yxm9uXpK9bpBBWkITk13cLo1y5/ur5VQpG22ny6EP7g=
github.com/pion/turn/v2 v2.0.7 h1:SZhc00WDovK6czaN1RSiHqbwANtIO6wfZQsU0m0KNE8=
github.com/pion/turn/v2 v2.0.7/go.mod h1:+y7xl719J8bAEVpSXBXvTxStjJv3hbz9YFflvkpcGPw=
github.com/pion/udp v0.1.1 h1:8UAPvyqmsxK8oOjloDk4wUt63TzFe9WEJkg5lChlj7o=
github.com/pion/udp v0.1.1/go.mod h1:6AFo+CMdKQm7UiA0eUPA8/eVCTx8jBIITLZHc9DWX5M=
github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
@ -436,6 +433,8 @@ github.com/vishvananda/netlink v1.1.0 h1:1iyaYNBLmP6L0220aDnYQpo1QEV4t4hJ+xEEhhJ
github.com/vishvananda/netlink v1.1.0/go.mod h1:cTgwzPIzzgDAYoQrMm0EdrjRUBkTqKYppBueQtXaqoE=
github.com/vishvananda/netns v0.0.0-20191106174202-0a2b9b5464df h1:OviZH7qLw/7ZovXvuNyL3XQl8UFofeikI1NW1Gypu7k=
github.com/vishvananda/netns v0.0.0-20191106174202-0a2b9b5464df/go.mod h1:JP3t17pCcGlemwknint6hfoeCVQrEMVwxRLRjXpq+BU=
github.com/wiretrustee/ice/v2 v2.1.21-0.20220216144753-138db20d36ad h1:S61dy7FWFITWs/WHk2JJvJd600rWyT8Qsm9ct9nUpOQ=
github.com/wiretrustee/ice/v2 v2.1.21-0.20220216144753-138db20d36ad/go.mod h1:XT1Nrb4OxbVFPffbQMbq4PaeEkpRLVzdphh3fjrw7DY=
github.com/yuin/goldmark v1.1.25/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
github.com/yuin/goldmark v1.1.32/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
@ -469,10 +468,11 @@ golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPh
golang.org/x/crypto v0.0.0-20210817164053-32db794688a5/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
golang.org/x/crypto v0.0.0-20211108221036-ceb1ce70b4fa/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
golang.org/x/crypto v0.0.0-20211117183948-ae814b36b871/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
golang.org/x/crypto v0.0.0-20211202192323-5770296d904e/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
golang.org/x/crypto v0.0.0-20211215153901-e495a2d5b3d3 h1:0es+/5331RGQPcXlMfP+WrnIIS6dNnNRe0WB02W0F4M=
golang.org/x/crypto v0.0.0-20211215153901-e495a2d5b3d3/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
golang.org/x/crypto v0.0.0-20220131195533-30dcbda58838 h1:71vQrMauZZhcTVK6KdYM+rklehEEwb3E+ZhaE5jrPrE=
golang.org/x/crypto v0.0.0-20220131195533-30dcbda58838/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
golang.org/x/exp v0.0.0-20190306152737-a1d7652674e8/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
golang.org/x/exp v0.0.0-20190510132918-efd6b22b2522/go.mod h1:ZjyILWgesfNpC6sMxTJOJm9Kp84zZh5NQWvqDGG3Qr8=
@ -570,8 +570,8 @@ golang.org/x/net v0.0.0-20211111083644-e5c967477495/go.mod h1:9nx3DQGgdP8bBQD5qx
golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
golang.org/x/net v0.0.0-20211201190559-0a0e4e1bb54c/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
golang.org/x/net v0.0.0-20211208012354-db4efeb81f4b/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
golang.org/x/net v0.0.0-20211215060638-4ddde0e984e9 h1:kmreh1vGI63l2FxOAYS3Yv6ATsi7lSTuwNSVbGfJV9I=
golang.org/x/net v0.0.0-20211215060638-4ddde0e984e9/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
golang.org/x/net v0.0.0-20220127200216-cd36cc0744dd h1:O7DYs+zxREGLKzKoMQrtrEacpb0ZVXA5rIwylE2Xchk=
golang.org/x/net v0.0.0-20220127200216-cd36cc0744dd/go.mod h1:CfG3xpIq0wQ8r1q4Su4UZFWDARRcnwPjda9FqA0JpMk=
golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
@ -694,6 +694,7 @@ golang.org/x/sys v0.0.0-20211214234402-4825e8c3871d/go.mod h1:oPkhp1MJrh7nUepCBc
golang.org/x/sys v0.0.0-20211216021012-1d35b9e2eb4e h1:fLOSk5Q00efkSvAm+4xcoXD+RRmLmmulPn5I3Y9F2EM=
golang.org/x/sys v0.0.0-20211216021012-1d35b9e2eb4e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=