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update signal gRpc, enable TLS and add keepalive params (#62)

Browse Source 
* chore: update signal gRpc
* chore: add Signal keep alive params and policy
* feature: add signal TLS support
* refactor: move signal Dockerfile to the corresponding folder
Co-authored-by: braginini <m.bragin@wiretrustee.com>
This commit is contained in:
Mikhail Bragin 2021-07-21 20:23:11 +02:00 committed by GitHub
parent 940578d600
commit d27eb317aa
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
9 changed files with 565 additions and 329 deletions
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4
.goreleaser.yaml
View File

@ -41,7 +41,7 @@ dockers:
- wiretrustee/wiretrustee:signal-{{ .Version }}-amd64
goarch: amd64
use: buildx
dockerfile: Dockerfile
dockerfile: signal/Dockerfile
build_flag_templates:
- "--platform=linux/amd64"
- "--label=org.opencontainers.image.created={{.Date}}"
@ -54,7 +54,7 @@ dockers:
- wiretrustee/wiretrustee:signal-{{ .Version }}-arm64v8
goarch: arm64
use: buildx
dockerfile: Dockerfile
dockerfile: signal/Dockerfile
build_flag_templates:
- "--platform=linux/arm64"
- "--label=org.opencontainers.image.created={{.Date}}"

33
cmd/root.go
View File

@ -1,11 +1,16 @@
package cmd
import (
"crypto/tls"
"fmt"
log "github.com/sirupsen/logrus"
"github.com/spf13/cobra"
"golang.org/x/crypto/acme/autocert"
"google.golang.org/grpc/credentials"
"net/http"
"os"
"os/signal"
"path/filepath"
"runtime"
)
@ -74,3 +79,31 @@ func InitLog(logLevel string) {
}
log.SetLevel(level)
}
func enableLetsEncrypt(datadir string, letsencryptDomain string) credentials.TransportCredentials {
certDir := filepath.Join(datadir, "letsencrypt")
if _, err := os.Stat(certDir); os.IsNotExist(err) {
err = os.MkdirAll(certDir, os.ModeDir)
if err != nil {
log.Fatalf("failed creating Let's encrypt certdir: %s: %v", certDir, err)
}
}
log.Infof("running with Let's encrypt with domain %s. Cert will be stored in %s", letsencryptDomain, certDir)
certManager := autocert.Manager{
Prompt: autocert.AcceptTOS,
Cache: autocert.DirCache(certDir),
HostPolicy: autocert.HostWhitelist(letsencryptDomain),
}
// listener to handle Let's encrypt certificate challenge
go func() {
if err := http.Serve(certManager.Listener(), certManager.HTTPHandler(nil)); err != nil {
log.Fatalf("failed to serve letsencrypt handler: %v", err)
}
}()
return credentials.NewTLS(&tls.Config{GetCertificate: certManager.GetCertificate})
}

41
cmd/signal.go
View File

@ -8,11 +8,28 @@ import (
sig "github.com/wiretrustee/wiretrustee/signal"
sigProto "github.com/wiretrustee/wiretrustee/signal/proto"
"google.golang.org/grpc"
"google.golang.org/grpc/keepalive"
"net"
"os"
"time"
)
var (
signalPort int
signalLetsencryptDomain string
signalDataDir string
signalKaep = grpc.KeepaliveEnforcementPolicy(keepalive.EnforcementPolicy{
MinTime: 5 * time.Second,
PermitWithoutStream: true,
})
signalKasp = grpc.KeepaliveParams(keepalive.ServerParameters{
MaxConnectionIdle: 15 * time.Second,
MaxConnectionAgeGrace: 5 * time.Second,
Time: 5 * time.Second,
Timeout: 2 * time.Second,
})
signalCmd = &cobra.Command{
Use: "signal",
@ -20,6 +37,22 @@ var (
Run: func(cmd *cobra.Command, args []string) {
flag.Parse()
if _, err := os.Stat(signalDataDir); os.IsNotExist(err) {
err = os.MkdirAll(signalDataDir, os.ModeDir)
if err != nil {
log.Fatalf("failed creating datadir: %s: %v", signalDataDir, err)
}
}
var opts []grpc.ServerOption
if mgmtLetsencryptDomain != "" {
transportCredentials := enableLetsEncrypt(signalDataDir, signalLetsencryptDomain)
opts = append(opts, grpc.Creds(transportCredentials))
}
opts = append(opts, signalKaep, signalKasp)
grpcServer := grpc.NewServer(opts...)
lis, err := net.Listen("tcp", fmt.Sprintf(":%d", signalPort))
if err != nil {
log.Fatalf("failed to listen: %v", err)
@ -28,8 +61,7 @@ var (
if err != nil {
log.Fatalf("failed to listen: %v", err)
}
var opts []grpc.ServerOption
grpcServer := grpc.NewServer(opts...)
sigProto.RegisterSignalExchangeServer(grpcServer, sig.NewServer())
log.Printf("started server: localhost:%v", signalPort)
if err := grpcServer.Serve(lis); err != nil {
@ -37,11 +69,14 @@ var (
}
SetupCloseHandler()
select {}
<-stopCh
log.Println("Receive signal to stop running the Signal server")
},
}
)
func init() {
signalCmd.PersistentFlags().IntVar(&signalPort, "port", 10000, "Server port to listen on (e.g. 10000)")
signalCmd.Flags().StringVar(&signalDataDir, "datadir", "/var/lib/wiretrustee/", "server data directory location")
signalCmd.Flags().StringVar(&signalLetsencryptDomain, "letsencrypt-domain", "", "a domain to issue Let's Encrypt certificate for. Enables TLS using Let's Encrypt. Will fetch and renew certificate, and run the server with TLS")
}

2
Dockerfile → signal/Dockerfile
View File

@ -1,5 +1,3 @@
FROM gcr.io/distroless/base:debug
EXPOSE 10000
ENTRYPOINT [ "/go/bin/wiretrustee","signal" ]
CMD ["--log-level","DEBUG"]
COPY wiretrustee /go/bin/wiretrustee

25
signal/README.md
View File

@ -1,23 +1,22 @@
# Wiretrustee Signal Server
This is a Wiretrustee signal-exchange server and client library to exchange connection information between Wiretrustee Trusted Device and Wiretrustee Hub
This is a Wiretrustee signal-exchange server and client library to exchange connection information between Wiretrustee peers
The project uses gRPC library and defines service in protobuf file located in:
```proto/signal_exchange.proto```
The project uses gRpc library and defines service in protobuf file located in:
```proto/signalexchange.proto```
To build the project you have to do the following things.
Install protobuf version 3 (by default v3 is installed on ubuntu 20.04. On previous versions it is proto 2):
Install golang gRpc tools:
```bash
#!/bin/bash
go install google.golang.org/protobuf/cmd/protoc-gen-go@v1.26
go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@v1.1
```
Generate gRpc code:
```bash
#!/bin/bash
sudo apt install protoc-gen-go
sudo apt install golang-goprotobuf-dev
```
Generate gRPC code:
```bash
#!/bin/bash
protoc -I proto/ proto/signalexchange.proto --go_out=plugins=grpc:proto
protoc -I proto/ proto/signalexchange.proto --go_out=. --go-grpc_out=.
```

570
signal/proto/signalexchange.pb.go
View File

@ -1,29 +1,25 @@
// Code generated by protoc-gen-go. DO NOT EDIT.
// versions:
// protoc-gen-go v1.26.0
// protoc v3.12.4
// source: signalexchange.proto
package proto
import (
context "context"
fmt "fmt"
proto "github.com/golang/protobuf/proto" //nolint
_ "github.com/golang/protobuf/protoc-gen-go/descriptor"
grpc "google.golang.org/grpc"
codes "google.golang.org/grpc/codes"
status "google.golang.org/grpc/status"
math "math"
protoreflect "google.golang.org/protobuf/reflect/protoreflect"
protoimpl "google.golang.org/protobuf/runtime/protoimpl"
reflect "reflect"
sync "sync"
)
// Reference imports to suppress errors if they are not otherwise used.
var _ = proto.Marshal
var _ = fmt.Errorf
var _ = math.Inf
// This is a compile-time assertion to ensure that this generated file
// is compatible with the proto package it is being compiled against.
// A compilation error at this line likely means your copy of the
// proto package needs to be updated.
const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
const (
// Verify that this generated code is sufficiently up-to-date.
_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
// Verify that runtime/protoimpl is sufficiently up-to-date.
_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
)
// Message type
type Body_Type int32
@ -34,140 +30,177 @@ const (
Body_CANDIDATE Body_Type = 2
)
var Body_Type_name = map[int32]string{
// Enum value maps for Body_Type.
var (
Body_Type_name = map[int32]string{
0: "OFFER",
1: "ANSWER",
2: "CANDIDATE",
}
var Body_Type_value = map[string]int32{
Body_Type_value = map[string]int32{
"OFFER": 0,
"ANSWER": 1,
"CANDIDATE": 2,
}
)
func (x Body_Type) String() string {
return proto.EnumName(Body_Type_name, int32(x))
func (x Body_Type) Enum() *Body_Type {
p := new(Body_Type)
*p = x
return p
}
func (x Body_Type) String() string {
return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
}
func (Body_Type) Descriptor() protoreflect.EnumDescriptor {
return file_signalexchange_proto_enumTypes[0].Descriptor()
}
func (Body_Type) Type() protoreflect.EnumType {
return &file_signalexchange_proto_enumTypes[0]
}
func (x Body_Type) Number() protoreflect.EnumNumber {
return protoreflect.EnumNumber(x)
}
// Deprecated: Use Body_Type.Descriptor instead.
func (Body_Type) EnumDescriptor() ([]byte, []int) {
return fileDescriptor_bf680d70b8e3473f, []int{2, 0}
return file_signalexchange_proto_rawDescGZIP(), []int{2, 0}
}
// Used for sending through signal.
// The body of this message is the Body message encrypted with the Wireguard private key and the remote Peer key
type EncryptedMessage struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
unknownFields protoimpl.UnknownFields
// Wireguard public key
Key string `protobuf:"bytes,2,opt,name=key,proto3" json:"key,omitempty"`
// Wireguard public key of the remote peer to connect to
RemoteKey string `protobuf:"bytes,3,opt,name=remoteKey,proto3" json:"remoteKey,omitempty"`
// encrypted message Body
Body []byte `protobuf:"bytes,4,opt,name=body,proto3" json:"body,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *EncryptedMessage) Reset() { *m = EncryptedMessage{} }
func (m *EncryptedMessage) String() string { return proto.CompactTextString(m) }
func (x *EncryptedMessage) Reset() {
*x = EncryptedMessage{}
if protoimpl.UnsafeEnabled {
mi := &file_signalexchange_proto_msgTypes[0]
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
ms.StoreMessageInfo(mi)
}
}
func (x *EncryptedMessage) String() string {
return protoimpl.X.MessageStringOf(x)
}
func (*EncryptedMessage) ProtoMessage() {}
func (x *EncryptedMessage) ProtoReflect() protoreflect.Message {
mi := &file_signalexchange_proto_msgTypes[0]
if protoimpl.UnsafeEnabled && x != nil {
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
if ms.LoadMessageInfo() == nil {
ms.StoreMessageInfo(mi)
}
return ms
}
return mi.MessageOf(x)
}
// Deprecated: Use EncryptedMessage.ProtoReflect.Descriptor instead.
func (*EncryptedMessage) Descriptor() ([]byte, []int) {
return fileDescriptor_bf680d70b8e3473f, []int{0}
return file_signalexchange_proto_rawDescGZIP(), []int{0}
}
func (m *EncryptedMessage) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_EncryptedMessage.Unmarshal(m, b)
}
func (m *EncryptedMessage) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_EncryptedMessage.Marshal(b, m, deterministic)
}
func (m *EncryptedMessage) XXX_Merge(src proto.Message) {
xxx_messageInfo_EncryptedMessage.Merge(m, src)
}
func (m *EncryptedMessage) XXX_Size() int {
return xxx_messageInfo_EncryptedMessage.Size(m)
}
func (m *EncryptedMessage) XXX_DiscardUnknown() {
xxx_messageInfo_EncryptedMessage.DiscardUnknown(m)
}
var xxx_messageInfo_EncryptedMessage proto.InternalMessageInfo
func (m *EncryptedMessage) GetKey() string {
if m != nil {
return m.Key
func (x *EncryptedMessage) GetKey() string {
if x != nil {
return x.Key
}
return ""
}
func (m *EncryptedMessage) GetRemoteKey() string {
if m != nil {
return m.RemoteKey
func (x *EncryptedMessage) GetRemoteKey() string {
if x != nil {
return x.RemoteKey
}
return ""
}
func (m *EncryptedMessage) GetBody() []byte {
if m != nil {
return m.Body
func (x *EncryptedMessage) GetBody() []byte {
if x != nil {
return x.Body
}
return nil
}
// A decrypted representation of the EncryptedMessage. Used locally before/after encryption
type Message struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
unknownFields protoimpl.UnknownFields
// Wireguard public key
Key string `protobuf:"bytes,2,opt,name=key,proto3" json:"key,omitempty"`
// Wireguard public key of the remote peer to connect to
RemoteKey string `protobuf:"bytes,3,opt,name=remoteKey,proto3" json:"remoteKey,omitempty"`
Body *Body `protobuf:"bytes,4,opt,name=body,proto3" json:"body,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *Message) Reset() { *m = Message{} }
func (m *Message) String() string { return proto.CompactTextString(m) }
func (x *Message) Reset() {
*x = Message{}
if protoimpl.UnsafeEnabled {
mi := &file_signalexchange_proto_msgTypes[1]
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
ms.StoreMessageInfo(mi)
}
}
func (x *Message) String() string {
return protoimpl.X.MessageStringOf(x)
}
func (*Message) ProtoMessage() {}
func (x *Message) ProtoReflect() protoreflect.Message {
mi := &file_signalexchange_proto_msgTypes[1]
if protoimpl.UnsafeEnabled && x != nil {
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
if ms.LoadMessageInfo() == nil {
ms.StoreMessageInfo(mi)
}
return ms
}
return mi.MessageOf(x)
}
// Deprecated: Use Message.ProtoReflect.Descriptor instead.
func (*Message) Descriptor() ([]byte, []int) {
return fileDescriptor_bf680d70b8e3473f, []int{1}
return file_signalexchange_proto_rawDescGZIP(), []int{1}
}
func (m *Message) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_Message.Unmarshal(m, b)
}
func (m *Message) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_Message.Marshal(b, m, deterministic)
}
func (m *Message) XXX_Merge(src proto.Message) {
xxx_messageInfo_Message.Merge(m, src)
}
func (m *Message) XXX_Size() int {
return xxx_messageInfo_Message.Size(m)
}
func (m *Message) XXX_DiscardUnknown() {
xxx_messageInfo_Message.DiscardUnknown(m)
}
var xxx_messageInfo_Message proto.InternalMessageInfo
func (m *Message) GetKey() string {
if m != nil {
return m.Key
func (x *Message) GetKey() string {
if x != nil {
return x.Key
}
return ""
}
func (m *Message) GetRemoteKey() string {
if m != nil {
return m.RemoteKey
func (x *Message) GetRemoteKey() string {
if x != nil {
return x.RemoteKey
}
return ""
}
func (m *Message) GetBody() *Body {
if m != nil {
return m.Body
func (x *Message) GetBody() *Body {
if x != nil {
return x.Body
}
return nil
}
@ -175,234 +208,197 @@ func (m *Message) GetBody() *Body {
// Actual body of the message that can contain credentials (type OFFER/ANSWER) or connection Candidate
// This part will be encrypted
type Body struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
unknownFields protoimpl.UnknownFields
Type Body_Type `protobuf:"varint,1,opt,name=type,proto3,enum=signalexchange.Body_Type" json:"type,omitempty"`
Payload string `protobuf:"bytes,2,opt,name=payload,proto3" json:"payload,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *Body) Reset() { *m = Body{} }
func (m *Body) String() string { return proto.CompactTextString(m) }
func (x *Body) Reset() {
*x = Body{}
if protoimpl.UnsafeEnabled {
mi := &file_signalexchange_proto_msgTypes[2]
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
ms.StoreMessageInfo(mi)
}
}
func (x *Body) String() string {
return protoimpl.X.MessageStringOf(x)
}
func (*Body) ProtoMessage() {}
func (x *Body) ProtoReflect() protoreflect.Message {
mi := &file_signalexchange_proto_msgTypes[2]
if protoimpl.UnsafeEnabled && x != nil {
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
if ms.LoadMessageInfo() == nil {
ms.StoreMessageInfo(mi)
}
return ms
}
return mi.MessageOf(x)
}
// Deprecated: Use Body.ProtoReflect.Descriptor instead.
func (*Body) Descriptor() ([]byte, []int) {
return fileDescriptor_bf680d70b8e3473f, []int{2}
return file_signalexchange_proto_rawDescGZIP(), []int{2}
}
func (m *Body) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_Body.Unmarshal(m, b)
}
func (m *Body) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_Body.Marshal(b, m, deterministic)
}
func (m *Body) XXX_Merge(src proto.Message) {
xxx_messageInfo_Body.Merge(m, src)
}
func (m *Body) XXX_Size() int {
return xxx_messageInfo_Body.Size(m)
}
func (m *Body) XXX_DiscardUnknown() {
xxx_messageInfo_Body.DiscardUnknown(m)
}
var xxx_messageInfo_Body proto.InternalMessageInfo
func (m *Body) GetType() Body_Type {
if m != nil {
return m.Type
func (x *Body) GetType() Body_Type {
if x != nil {
return x.Type
}
return Body_OFFER
}
func (m *Body) GetPayload() string {
if m != nil {
return m.Payload
func (x *Body) GetPayload() string {
if x != nil {
return x.Payload
}
return ""
}
func init() {
proto.RegisterEnum("signalexchange.Body_Type", Body_Type_name, Body_Type_value)
proto.RegisterType((*EncryptedMessage)(nil), "signalexchange.EncryptedMessage")
proto.RegisterType((*Message)(nil), "signalexchange.Message")
proto.RegisterType((*Body)(nil), "signalexchange.Body")
var File_signalexchange_proto protoreflect.FileDescriptor
var file_signalexchange_proto_rawDesc = []byte{
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}
func init() { proto.RegisterFile("signalexchange.proto", fileDescriptor_bf680d70b8e3473f) }
var (
file_signalexchange_proto_rawDescOnce sync.Once
file_signalexchange_proto_rawDescData = file_signalexchange_proto_rawDesc
)
var fileDescriptor_bf680d70b8e3473f = []byte{
// 319 bytes of a gzipped FileDescriptorProto
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func file_signalexchange_proto_rawDescGZIP() []byte {
file_signalexchange_proto_rawDescOnce.Do(func() {
file_signalexchange_proto_rawDescData = protoimpl.X.CompressGZIP(file_signalexchange_proto_rawDescData)
})
return file_signalexchange_proto_rawDescData
}
// Reference imports to suppress errors if they are not otherwise used.
var _ context.Context
var _ grpc.ClientConn
// This is a compile-time assertion to ensure that this generated file
// is compatible with the grpc package it is being compiled against.
const _ = grpc.SupportPackageIsVersion4
// SignalExchangeClient is the client API for SignalExchange service.
//
// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://godoc.org/google.golang.org/grpc#ClientConn.NewStream.
type SignalExchangeClient interface {
// Synchronously connect to the Signal Exchange service offering connection candidates and waiting for connection candidates from the other party (remote peer)
Send(ctx context.Context, in *EncryptedMessage, opts ...grpc.CallOption) (*EncryptedMessage, error)
// Connect to the Signal Exchange service offering connection candidates and maintain a channel for receiving candidates from the other party (remote peer)
ConnectStream(ctx context.Context, opts ...grpc.CallOption) (SignalExchange_ConnectStreamClient, error)
var file_signalexchange_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
var file_signalexchange_proto_msgTypes = make([]protoimpl.MessageInfo, 3)
var file_signalexchange_proto_goTypes = []interface{}{
(Body_Type)(0), // 0: signalexchange.Body.Type
(*EncryptedMessage)(nil), // 1: signalexchange.EncryptedMessage
(*Message)(nil), // 2: signalexchange.Message
(*Body)(nil), // 3: signalexchange.Body
}
var file_signalexchange_proto_depIdxs = []int32{
3, // 0: signalexchange.Message.body:type_name -> signalexchange.Body
0, // 1: signalexchange.Body.type:type_name -> signalexchange.Body.Type
1, // 2: signalexchange.SignalExchange.Send:input_type -> signalexchange.EncryptedMessage
1, // 3: signalexchange.SignalExchange.ConnectStream:input_type -> signalexchange.EncryptedMessage
1, // 4: signalexchange.SignalExchange.Send:output_type -> signalexchange.EncryptedMessage
1, // 5: signalexchange.SignalExchange.ConnectStream:output_type -> signalexchange.EncryptedMessage
4, // [4:6] is the sub-list for method output_type
2, // [2:4] is the sub-list for method input_type
2, // [2:2] is the sub-list for extension type_name
2, // [2:2] is the sub-list for extension extendee
0, // [0:2] is the sub-list for field type_name
}
type signalExchangeClient struct {
cc *grpc.ClientConn
func init() { file_signalexchange_proto_init() }
func file_signalexchange_proto_init() {
if File_signalexchange_proto != nil {
return
}
func NewSignalExchangeClient(cc *grpc.ClientConn) SignalExchangeClient {
return &signalExchangeClient{cc}
if !protoimpl.UnsafeEnabled {
file_signalexchange_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
switch v := v.(*EncryptedMessage); i {
case 0:
return &v.state
case 1:
return &v.sizeCache
case 2:
return &v.unknownFields
default:
return nil
}
func (c *signalExchangeClient) Send(ctx context.Context, in *EncryptedMessage, opts ...grpc.CallOption) (*EncryptedMessage, error) {
out := new(EncryptedMessage)
err := c.cc.Invoke(ctx, "/signalexchange.SignalExchange/Send", in, out, opts...)
if err != nil {
return nil, err
}
return out, nil
file_signalexchange_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
switch v := v.(*Message); i {
case 0:
return &v.state
case 1:
return &v.sizeCache
case 2:
return &v.unknownFields
default:
return nil
}
func (c *signalExchangeClient) ConnectStream(ctx context.Context, opts ...grpc.CallOption) (SignalExchange_ConnectStreamClient, error) {
stream, err := c.cc.NewStream(ctx, &_SignalExchange_serviceDesc.Streams[0], "/signalexchange.SignalExchange/ConnectStream", opts...)
if err != nil {
return nil, err
}
x := &signalExchangeConnectStreamClient{stream}
return x, nil
file_signalexchange_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
switch v := v.(*Body); i {
case 0:
return &v.state
case 1:
return &v.sizeCache
case 2:
return &v.unknownFields
default:
return nil
}
type SignalExchange_ConnectStreamClient interface {
Send(*EncryptedMessage) error
Recv() (*EncryptedMessage, error)
grpc.ClientStream
}
type signalExchangeConnectStreamClient struct {
grpc.ClientStream
}
func (x *signalExchangeConnectStreamClient) Send(m *EncryptedMessage) error {
return x.ClientStream.SendMsg(m)
}
func (x *signalExchangeConnectStreamClient) Recv() (*EncryptedMessage, error) {
m := new(EncryptedMessage)
if err := x.ClientStream.RecvMsg(m); err != nil {
return nil, err
}
return m, nil
}
// SignalExchangeServer is the server API for SignalExchange service.
type SignalExchangeServer interface {
// Synchronously connect to the Signal Exchange service offering connection candidates and waiting for connection candidates from the other party (remote peer)
Send(context.Context, *EncryptedMessage) (*EncryptedMessage, error)
// Connect to the Signal Exchange service offering connection candidates and maintain a channel for receiving candidates from the other party (remote peer)
ConnectStream(SignalExchange_ConnectStreamServer) error
}
// UnimplementedSignalExchangeServer can be embedded to have forward compatible implementations.
type UnimplementedSignalExchangeServer struct {
}
func (*UnimplementedSignalExchangeServer) Send(ctx context.Context, req *EncryptedMessage) (*EncryptedMessage, error) {
return nil, status.Errorf(codes.Unimplemented, "method Send not implemented")
}
func (*UnimplementedSignalExchangeServer) ConnectStream(srv SignalExchange_ConnectStreamServer) error {
return status.Errorf(codes.Unimplemented, "method ConnectStream not implemented")
}
func RegisterSignalExchangeServer(s *grpc.Server, srv SignalExchangeServer) {
s.RegisterService(&_SignalExchange_serviceDesc, srv)
}
func _SignalExchange_Send_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
in := new(EncryptedMessage)
if err := dec(in); err != nil {
return nil, err
}
if interceptor == nil {
return srv.(SignalExchangeServer).Send(ctx, in)
}
info := &grpc.UnaryServerInfo{
Server: srv,
FullMethod: "/signalexchange.SignalExchange/Send",
}
handler := func(ctx context.Context, req interface{}) (interface{}, error) {
return srv.(SignalExchangeServer).Send(ctx, req.(*EncryptedMessage))
}
return interceptor(ctx, in, info, handler)
}
func _SignalExchange_ConnectStream_Handler(srv interface{}, stream grpc.ServerStream) error {
return srv.(SignalExchangeServer).ConnectStream(&signalExchangeConnectStreamServer{stream})
}
type SignalExchange_ConnectStreamServer interface {
Send(*EncryptedMessage) error
Recv() (*EncryptedMessage, error)
grpc.ServerStream
}
type signalExchangeConnectStreamServer struct {
grpc.ServerStream
}
func (x *signalExchangeConnectStreamServer) Send(m *EncryptedMessage) error {
return x.ServerStream.SendMsg(m)
}
func (x *signalExchangeConnectStreamServer) Recv() (*EncryptedMessage, error) {
m := new(EncryptedMessage)
if err := x.ServerStream.RecvMsg(m); err != nil {
return nil, err
}
return m, nil
}
var _SignalExchange_serviceDesc = grpc.ServiceDesc{
ServiceName: "signalexchange.SignalExchange",
HandlerType: (*SignalExchangeServer)(nil),
Methods: []grpc.MethodDesc{
{
MethodName: "Send",
Handler: _SignalExchange_Send_Handler,
type x struct{}
out := protoimpl.TypeBuilder{
File: protoimpl.DescBuilder{
GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
RawDescriptor: file_signalexchange_proto_rawDesc,
NumEnums: 1,
NumMessages: 3,
NumExtensions: 0,
NumServices: 1,
},
},
Streams: []grpc.StreamDesc{
{
StreamName: "ConnectStream",
Handler: _SignalExchange_ConnectStream_Handler,
ServerStreams: true,
ClientStreams: true,
},
},
Metadata: "signalexchange.proto",
GoTypes: file_signalexchange_proto_goTypes,
DependencyIndexes: file_signalexchange_proto_depIdxs,
EnumInfos: file_signalexchange_proto_enumTypes,
MessageInfos: file_signalexchange_proto_msgTypes,
}.Build()
File_signalexchange_proto = out.File
file_signalexchange_proto_rawDesc = nil
file_signalexchange_proto_goTypes = nil
file_signalexchange_proto_depIdxs = nil
}

2
signal/proto/signalexchange.proto
View File

@ -2,7 +2,7 @@ syntax = "proto3";
import "google/protobuf/descriptor.proto";
option go_package = ".;proto";
option go_package = "/proto";
package signalexchange;

174
signal/proto/signalexchange_grpc.pb.go Normal file
View File

@ -0,0 +1,174 @@
// Code generated by protoc-gen-go-grpc. DO NOT EDIT.
package proto
import (
context "context"
grpc "google.golang.org/grpc"
codes "google.golang.org/grpc/codes"
status "google.golang.org/grpc/status"
)
// This is a compile-time assertion to ensure that this generated file
// is compatible with the grpc package it is being compiled against.
// Requires gRPC-Go v1.32.0 or later.
const _ = grpc.SupportPackageIsVersion7
// SignalExchangeClient is the client API for SignalExchange service.
//
// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
type SignalExchangeClient interface {
// Synchronously connect to the Signal Exchange service offering connection candidates and waiting for connection candidates from the other party (remote peer)
Send(ctx context.Context, in *EncryptedMessage, opts ...grpc.CallOption) (*EncryptedMessage, error)
// Connect to the Signal Exchange service offering connection candidates and maintain a channel for receiving candidates from the other party (remote peer)
ConnectStream(ctx context.Context, opts ...grpc.CallOption) (SignalExchange_ConnectStreamClient, error)
}
type signalExchangeClient struct {
cc grpc.ClientConnInterface
}
func NewSignalExchangeClient(cc grpc.ClientConnInterface) SignalExchangeClient {
return &signalExchangeClient{cc}
}
func (c *signalExchangeClient) Send(ctx context.Context, in *EncryptedMessage, opts ...grpc.CallOption) (*EncryptedMessage, error) {
out := new(EncryptedMessage)
err := c.cc.Invoke(ctx, "/signalexchange.SignalExchange/Send", in, out, opts...)
if err != nil {
return nil, err
}
return out, nil
}
func (c *signalExchangeClient) ConnectStream(ctx context.Context, opts ...grpc.CallOption) (SignalExchange_ConnectStreamClient, error) {
stream, err := c.cc.NewStream(ctx, &SignalExchange_ServiceDesc.Streams[0], "/signalexchange.SignalExchange/ConnectStream", opts...)
if err != nil {
return nil, err
}
x := &signalExchangeConnectStreamClient{stream}
return x, nil
}
type SignalExchange_ConnectStreamClient interface {
Send(*EncryptedMessage) error
Recv() (*EncryptedMessage, error)
grpc.ClientStream
}
type signalExchangeConnectStreamClient struct {
grpc.ClientStream
}
func (x *signalExchangeConnectStreamClient) Send(m *EncryptedMessage) error {
return x.ClientStream.SendMsg(m)
}
func (x *signalExchangeConnectStreamClient) Recv() (*EncryptedMessage, error) {
m := new(EncryptedMessage)
if err := x.ClientStream.RecvMsg(m); err != nil {
return nil, err
}
return m, nil
}
// SignalExchangeServer is the server API for SignalExchange service.
// All implementations must embed UnimplementedSignalExchangeServer
// for forward compatibility
type SignalExchangeServer interface {
// Synchronously connect to the Signal Exchange service offering connection candidates and waiting for connection candidates from the other party (remote peer)
Send(context.Context, *EncryptedMessage) (*EncryptedMessage, error)
// Connect to the Signal Exchange service offering connection candidates and maintain a channel for receiving candidates from the other party (remote peer)
ConnectStream(SignalExchange_ConnectStreamServer) error
mustEmbedUnimplementedSignalExchangeServer()
}
// UnimplementedSignalExchangeServer must be embedded to have forward compatible implementations.
type UnimplementedSignalExchangeServer struct {
}
func (UnimplementedSignalExchangeServer) Send(context.Context, *EncryptedMessage) (*EncryptedMessage, error) {
return nil, status.Errorf(codes.Unimplemented, "method Send not implemented")
}
func (UnimplementedSignalExchangeServer) ConnectStream(SignalExchange_ConnectStreamServer) error {
return status.Errorf(codes.Unimplemented, "method ConnectStream not implemented")
}
func (UnimplementedSignalExchangeServer) mustEmbedUnimplementedSignalExchangeServer() {}
// UnsafeSignalExchangeServer may be embedded to opt out of forward compatibility for this service.
// Use of this interface is not recommended, as added methods to SignalExchangeServer will
// result in compilation errors.
type UnsafeSignalExchangeServer interface {
mustEmbedUnimplementedSignalExchangeServer()
}
func RegisterSignalExchangeServer(s grpc.ServiceRegistrar, srv SignalExchangeServer) {
s.RegisterService(&SignalExchange_ServiceDesc, srv)
}
func _SignalExchange_Send_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
in := new(EncryptedMessage)
if err := dec(in); err != nil {
return nil, err
}
if interceptor == nil {
return srv.(SignalExchangeServer).Send(ctx, in)
}
info := &grpc.UnaryServerInfo{
Server: srv,
FullMethod: "/signalexchange.SignalExchange/Send",
}
handler := func(ctx context.Context, req interface{}) (interface{}, error) {
return srv.(SignalExchangeServer).Send(ctx, req.(*EncryptedMessage))
}
return interceptor(ctx, in, info, handler)
}
func _SignalExchange_ConnectStream_Handler(srv interface{}, stream grpc.ServerStream) error {
return srv.(SignalExchangeServer).ConnectStream(&signalExchangeConnectStreamServer{stream})
}
type SignalExchange_ConnectStreamServer interface {
Send(*EncryptedMessage) error
Recv() (*EncryptedMessage, error)
grpc.ServerStream
}
type signalExchangeConnectStreamServer struct {
grpc.ServerStream
}
func (x *signalExchangeConnectStreamServer) Send(m *EncryptedMessage) error {
return x.ServerStream.SendMsg(m)
}
func (x *signalExchangeConnectStreamServer) Recv() (*EncryptedMessage, error) {
m := new(EncryptedMessage)
if err := x.ServerStream.RecvMsg(m); err != nil {
return nil, err
}
return m, nil
}
// SignalExchange_ServiceDesc is the grpc.ServiceDesc for SignalExchange service.
// It's only intended for direct use with grpc.RegisterService,
// and not to be introspected or modified (even as a copy)
var SignalExchange_ServiceDesc = grpc.ServiceDesc{
ServiceName: "signalexchange.SignalExchange",
HandlerType: (*SignalExchangeServer)(nil),
Methods: []grpc.MethodDesc{
{
MethodName: "Send",
Handler: _SignalExchange_Send_Handler,
},
},
Streams: []grpc.StreamDesc{
{
StreamName: "ConnectStream",
Handler: _SignalExchange_ConnectStream_Handler,
ServerStreams: true,
ClientStreams: true,
},
},
Metadata: "signalexchange.proto",
}

1
signal/signal.go
View File

@ -15,6 +15,7 @@ import (
// Server an instance of a Signal server
type Server struct {
registry *peer.Registry
proto.UnimplementedSignalExchangeServer
}
// NewServer creates a new Signal server