[ci skip] Peer connection

Makefile

@@ -23,3 +23,9 @@ package:
 deploy:
 	mkdir -p /deploy/$(VERSION)
 	cp release/*.tar.gz /deploy/$(VERSION)/
+
+protobuf:
+	cd .. && \
+	protoc --go_out=plugins=grpc:. dfss/dfssc/api/client.proto && \
+	protoc --go_out=plugins=grpc:. dfss/dfssd/api/demonstrator.proto && \
+	protoc --go_out=plugins=grpc:. dfss/dfssp/api/platform.proto
\ No newline at end of file

dfssc/api/client.pb.go

+// Code generated by protoc-gen-go.
+// source: dfss/dfssc/api/client.proto
+// DO NOT EDIT!
+
+/*
+Package api is a generated protocol buffer package.
+
+It is generated from these files:
+	dfss/dfssc/api/client.proto
+
+It has these top-level messages:
+	Promise
+	Signature
+	Hello
+*/
+package api
+
+import proto "github.com/golang/protobuf/proto"
+import fmt "fmt"
+import math "math"
+import api1 "dfss/dfssp/api"
+
+import (
+	context "golang.org/x/net/context"
+	grpc "google.golang.org/grpc"
+)
+
+// 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.
+const _ = proto.ProtoPackageIsVersion1
+
+// Promise message contains all the required information to verify
+// the identity of the sender and reciever, and the actual promess
+type Promise struct {
+	RecipientKeyHash []byte `protobuf:"bytes,1,opt,name=recipientKeyHash,proto3" json:"recipientKeyHash,omitempty"`
+	SenderKeyHash    []byte `protobuf:"bytes,2,opt,name=senderKeyHash,proto3" json:"senderKeyHash,omitempty"`
+	SignatureUuid    string `protobuf:"bytes,3,opt,name=signatureUuid" json:"signatureUuid,omitempty"`
+	ContractUuid     string `protobuf:"bytes,4,opt,name=contractUuid" json:"contractUuid,omitempty"`
+}
+
+func (m *Promise) Reset()                    { *m = Promise{} }
+func (m *Promise) String() string            { return proto.CompactTextString(m) }
+func (*Promise) ProtoMessage()               {}
+func (*Promise) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
+
+// Signature message contains all the required information to verify
+// the identity of the sender and reciever, and the actual signature
+type Signature struct {
+	RecipientKeyHash []byte `protobuf:"bytes,1,opt,name=recipientKeyHash,proto3" json:"recipientKeyHash,omitempty"`
+	SenderKeyHash    []byte `protobuf:"bytes,2,opt,name=senderKeyHash,proto3" json:"senderKeyHash,omitempty"`
+	Signature        string `protobuf:"bytes,3,opt,name=signature" json:"signature,omitempty"`
+	SignatureUuid    string `protobuf:"bytes,4,opt,name=signatureUuid" json:"signatureUuid,omitempty"`
+	ContractUuid     string `protobuf:"bytes,5,opt,name=contractUuid" json:"contractUuid,omitempty"`
+}
+
+func (m *Signature) Reset()                    { *m = Signature{} }
+func (m *Signature) String() string            { return proto.CompactTextString(m) }
+func (*Signature) ProtoMessage()               {}
+func (*Signature) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{1} }
+
+// Hello message is used when discovering peers. It contains the current version of the software.
+type Hello struct {
+	Version string `protobuf:"bytes,1,opt,name=version" json:"version,omitempty"`
+}
+
+func (m *Hello) Reset()                    { *m = Hello{} }
+func (m *Hello) String() string            { return proto.CompactTextString(m) }
+func (*Hello) ProtoMessage()               {}
+func (*Hello) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{2} }
+
+func init() {
+	proto.RegisterType((*Promise)(nil), "api.Promise")
+	proto.RegisterType((*Signature)(nil), "api.Signature")
+	proto.RegisterType((*Hello)(nil), "api.Hello")
+}
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ context.Context
+var _ grpc.ClientConn
+
+// Client API for Client service
+
+type ClientClient interface {
+	TreatPromise(ctx context.Context, in *Promise, opts ...grpc.CallOption) (*api1.ErrorCode, error)
+	TreatSignature(ctx context.Context, in *Signature, opts ...grpc.CallOption) (*api1.ErrorCode, error)
+	Discover(ctx context.Context, in *Hello, opts ...grpc.CallOption) (*Hello, error)
+}
+
+type clientClient struct {
+	cc *grpc.ClientConn
+}
+
+func NewClientClient(cc *grpc.ClientConn) ClientClient {
+	return &clientClient{cc}
+}
+
+func (c *clientClient) TreatPromise(ctx context.Context, in *Promise, opts ...grpc.CallOption) (*api1.ErrorCode, error) {
+	out := new(api1.ErrorCode)
+	err := grpc.Invoke(ctx, "/api.Client/TreatPromise", in, out, c.cc, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *clientClient) TreatSignature(ctx context.Context, in *Signature, opts ...grpc.CallOption) (*api1.ErrorCode, error) {
+	out := new(api1.ErrorCode)
+	err := grpc.Invoke(ctx, "/api.Client/TreatSignature", in, out, c.cc, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *clientClient) Discover(ctx context.Context, in *Hello, opts ...grpc.CallOption) (*Hello, error) {
+	out := new(Hello)
+	err := grpc.Invoke(ctx, "/api.Client/Discover", in, out, c.cc, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+// Server API for Client service
+
+type ClientServer interface {
+	TreatPromise(context.Context, *Promise) (*api1.ErrorCode, error)
+	TreatSignature(context.Context, *Signature) (*api1.ErrorCode, error)
+	Discover(context.Context, *Hello) (*Hello, error)
+}
+
+func RegisterClientServer(s *grpc.Server, srv ClientServer) {
+	s.RegisterService(&_Client_serviceDesc, srv)
+}
+
+func _Client_TreatPromise_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error) (interface{}, error) {
+	in := new(Promise)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	out, err := srv.(ClientServer).TreatPromise(ctx, in)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func _Client_TreatSignature_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error) (interface{}, error) {
+	in := new(Signature)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	out, err := srv.(ClientServer).TreatSignature(ctx, in)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func _Client_Discover_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error) (interface{}, error) {
+	in := new(Hello)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	out, err := srv.(ClientServer).Discover(ctx, in)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+var _Client_serviceDesc = grpc.ServiceDesc{
+	ServiceName: "api.Client",
+	HandlerType: (*ClientServer)(nil),
+	Methods: []grpc.MethodDesc{
+		{
+			MethodName: "TreatPromise",
+			Handler:    _Client_TreatPromise_Handler,
+		},
+		{
+			MethodName: "TreatSignature",
+			Handler:    _Client_TreatSignature_Handler,
+		},
+		{
+			MethodName: "Discover",
+			Handler:    _Client_Discover_Handler,
+		},
+	},
+	Streams: []grpc.StreamDesc{},
+}
+
+var fileDescriptor0 = []byte{
+	// 302 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0xb4, 0x92, 0x4f, 0x4e, 0xf3, 0x30,
+	0x10, 0xc5, 0x9b, 0xaf, 0xff, 0xbe, 0x8c, 0x42, 0x85, 0xbc, 0xaa, 0x02, 0x48, 0x10, 0x75, 0x81,
+	0x58, 0x24, 0x52, 0x39, 0x42, 0x41, 0xaa, 0xc4, 0x06, 0x05, 0x38, 0x80, 0x71, 0xa6, 0x60, 0x29,
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+	0x17, 0x6c, 0xd8, 0x44, 0x79, 0xcf, 0xbf, 0xb1, 0xdf, 0x78, 0x0c, 0x27, 0xd9, 0xc2, 0xda, 0x64,
+	0xfd, 0x51, 0x89, 0x2c, 0x75, 0xa2, 0x72, 0x8d, 0x85, 0x8b, 0x4b, 0x32, 0xce, 0x88, 0x6e, 0xe5,
+	0x84, 0x67, 0x0d, 0x51, 0x32, 0x51, 0xe6, 0xd2, 0x2d, 0x0c, 0x2d, 0x37, 0x4c, 0xf4, 0xe9, 0xc1,
+	0xf0, 0x9e, 0xcc, 0x52, 0x5b, 0x14, 0x57, 0x70, 0x4c, 0xa8, 0x74, 0xb9, 0xde, 0xe2, 0x0e, 0xdf,
+	0xe7, 0xd2, 0xbe, 0x8e, 0xbd, 0x73, 0xef, 0x32, 0x48, 0xf7, 0x7c, 0x31, 0x81, 0x23, 0x8b, 0x45,
+	0x86, 0x54, 0x83, 0xff, 0x18, 0x6c, 0x9b, 0x4c, 0xe9, 0x97, 0x42, 0xba, 0x15, 0xe1, 0xd3, 0x4a,
+	0x67, 0xe3, 0x6e, 0x45, 0xf9, 0x69, 0xdb, 0x14, 0x11, 0x04, 0xca, 0x14, 0x8e, 0xa4, 0x72, 0x0c,
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+	0x42, 0x6d, 0x53, 0xee, 0x8c, 0xfd, 0x3e, 0x7a, 0xbf, 0xe9, 0xa3, 0x7f, 0xa0, 0x8f, 0x0b, 0xe8,
+	0xcf, 0x31, 0xcf, 0x8d, 0x18, 0xc3, 0xf0, 0x0d, 0xc9, 0x6a, 0x53, 0x70, 0x72, 0x3f, 0xad, 0xe5,
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+	0xd5, 0x08, 0xe3, 0xad, 0x0a, 0x47, 0xac, 0x6e, 0x89, 0x0c, 0xcd, 0x4c, 0x86, 0x51, 0x47, 0x4c,
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+	0x54, 0xc7, 0x0b, 0xe0, 0x55, 0x0e, 0x18, 0xfe, 0xf8, 0x8f, 0x3a, 0xcf, 0x03, 0x7e, 0x2e, 0xd7,
+	0xdf, 0x01, 0x00, 0x00, 0xff, 0xff, 0x61, 0x73, 0x57, 0xa2, 0x71, 0x02, 0x00, 0x00,
+}

dfssc/api/client.proto

+syntax = "proto3";
+
+package api;
+
+import "dfss/dfssp/api/platform.proto";
+
+service Client {
+	rpc TreatPromise(Promise) returns (ErrorCode) {}
+	rpc TreatSignature(Signature) returns (ErrorCode) {}
+	rpc Discover(Hello) returns (Hello) {}
+}
+
+// Promise message contains all the required information to verify
+// the identity of the sender and reciever, and the actual promess
+message Promise {
+	bytes recipientKeyHash = 1;	// SHA-512
+	bytes senderKeyHash = 2;	// SHA-512
+	string signatureUuid = 3;
+	string contractUuid = 4;
+}
+
+// Signature message contains all the required information to verify
+// the identity of the sender and reciever, and the actual signature
+message Signature {
+	bytes recipientKeyHash = 1;	// SHA-512
+	bytes senderKeyHash = 2;	// SHA-512
+	string signature = 3;		// Cryptographic signature
+	string signatureUuid = 4;
+	string contractUuid = 5;
+}
+
+// Hello message is used when discovering peers. It contains the current version of the software.
+message Hello {
+	string version = 1;
+}
\ No newline at end of file

dfssc/sign/server.go

+package sign
+
+import (
+	"fmt"
+
+	"dfss"
+	cAPI "dfss/dfssc/api"
+	pAPI "dfss/dfssp/api"
+	"dfss/net"
+
+	"golang.org/x/net/context"
+	"google.golang.org/grpc"
+)
+
+type clientServer struct{}
+
+// TreatPromise handler
+//
+// Handle incoming TreatPromise messages
+func (s *clientServer) TreatPromise(ctx context.Context, in *cAPI.Promise) (*pAPI.ErrorCode, error) {
+	// TODO
+	return nil, nil
+}
+
+// TreatSignature handler
+//
+// Handle incoming TreatSignature messages
+func (s *clientServer) TreatSignature(ctx context.Context, in *cAPI.Signature) (*pAPI.ErrorCode, error) {
+	// TODO
+	return nil, nil
+}
+
+// Discover handler
+//
+// Handle incoming Discover messages
+func (s *clientServer) Discover(ctx context.Context, in *cAPI.Hello) (*cAPI.Hello, error) {
+	fmt.Println("Recieved:", in.Version)
+	return &cAPI.Hello{Version: dfss.Version}, nil
+}
+
+// GetServer create and registers a ClientServer, returning the associted GRPC server
+func (m *SignatureManager) GetServer() *grpc.Server {
+	server := net.NewServer(m.cert, m.key, m.ca)
+	cAPI.RegisterClientServer(server, &clientServer{})
+	return server
+}

dfssc/sign/starter.go

 package sign
 
 import (
+	"crypto/rsa"
+	"crypto/x509"
 	"errors"
 	"fmt"
 	"strconv"
 
+	"dfss"
+	cAPI "dfss/dfssc/api"
 	"dfss/dfssc/security"
-	"dfss/dfssp/api"
+	pAPI "dfss/dfssp/api"
 	"dfss/dfssp/contract"
 	"dfss/net"
 	"golang.org/x/net/context"
+	"google.golang.org/grpc"
 )
 
 // SignatureManager handles the signature of a contract.
@@ -17,8 +22,11 @@ type SignatureManager struct {
 	auth      *security.AuthContainer
 	localPort int
 	contract  *contract.JSON
-	platform  api.PlatformClient
-	peers     map[string]*api.User
+	platform  pAPI.PlatformClient
+	peers     map[string]*cAPI.ClientClient
+	cServer   *grpc.Server
+	cert, ca  *x509.Certificate
+	key       *rsa.PrivateKey
 }
 
 // NewSignatureManager populates a SignatureManager and connects to the platform.
@@ -28,20 +36,23 @@ func NewSignatureManager(fileCA, fileCert, fileKey, addrPort, passphrase string,
 		localPort: port,
 		contract:  c,
 	}
-
-	ca, cert, key, err := m.auth.LoadFiles()
+	var err error
+	m.ca, m.cert, m.key, err = m.auth.LoadFiles()
 	if err != nil {
 		return nil, err
 	}
 
-	conn, err := net.Connect(m.auth.AddrPort, cert, key, ca)
+	m.cServer = m.GetServer()
+	go func() { _ = net.Listen("0.0.0.0:"+strconv.Itoa(port), m.cServer) }()
+
+	conn, err := net.Connect(m.auth.AddrPort, m.cert, m.key, m.ca)
 	if err != nil {
 		return nil, err
 	}
 
-	m.platform = api.NewPlatformClient(conn)
+	m.platform = pAPI.NewPlatformClient(conn)
 
-	m.peers = make(map[string]*api.User)
+	m.peers = make(map[string]*cAPI.ClientClient)
 	for _, u := range c.Signers {
 		m.peers[u.Email] = nil
 	}
@@ -51,7 +62,7 @@ func NewSignatureManager(fileCA, fileCert, fileKey, addrPort, passphrase string,
 
 // ConnectToPeers tries to fetch the list of users for this contract, and tries to establish a connection to each peer.
 func (m *SignatureManager) ConnectToPeers() error {
-	stream, err := m.platform.JoinSignature(context.Background(), &api.JoinSignatureRequest{
+	stream, err := m.platform.JoinSignature(context.Background(), &pAPI.JoinSignatureRequest{
 		ContractUuid: m.contract.UUID,
 		Port:         uint32(m.localPort),
 	})
@@ -65,7 +76,7 @@ func (m *SignatureManager) ConnectToPeers() error {
 			return err
 		}
 		errorCode := userConnected.GetErrorCode()
-		if errorCode.Code != api.ErrorCode_SUCCESS {
+		if errorCode.Code != pAPI.ErrorCode_SUCCESS {
 			return errors.New(errorCode.Message)
 		}
 		ready, err := m.addPeer(userConnected.User)
@@ -81,24 +92,36 @@ func (m *SignatureManager) ConnectToPeers() error {
 }
 
 // addPeer stores a peer from the platform and tries to establish a connection to this peer.
-func (m *SignatureManager) addPeer(user *api.User) (ready bool, err error) {
+func (m *SignatureManager) addPeer(user *pAPI.User) (ready bool, err error) {
 	if user == nil {
 		err = errors.New("unexpected user format")
 		return
 	}
 
-	m.peers[user.Email] = user
-	fmt.Println("Trying to connect with", user.Email, "/", user.Ip+":"+strconv.Itoa(int(user.Port)))
+	addrPort := user.Ip + ":" + strconv.Itoa(int(user.Port))
+	fmt.Println("Trying to connect with", user.Email, "/", addrPort)
 
-	// TODO do the connection
+	conn, err := net.Connect(addrPort, m.cert, m.key, m.ca)
+	if err != nil {
+		return false, err
+	}
+
+	// Sending Hello message
+	client := cAPI.NewClientClient(conn)
+	m.peers[user.Email] = &client
+	msg, err := client.Discover(context.Background(), &cAPI.Hello{Version: dfss.Version})
+	if err != nil {
+		return false, err
+	}
+	// Printing answer: application version
+	fmt.Println("Recieved:", msg.Version)
 
 	// Check if we have any other peer to connect to
 	for _, u := range m.peers {
 		if u == nil {
-			return
+			return false, nil
 		}
 	}
 
-	ready = true
-	return
+	return true, nil
 }

dfssd/api/Makefile

-all:
-	protoc --go_out=plugins=grpc:. demonstrator.proto

dfssd/api/demonstrator.pb.go

 // Code generated by protoc-gen-go.
-// source: demonstrator.proto
+// source: dfss/dfssd/api/demonstrator.proto
 // DO NOT EDIT!
 
 /*
 Package api is a generated protocol buffer package.
 
 It is generated from these files:
-	demonstrator.proto
+	dfss/dfssd/api/demonstrator.proto
 
 It has these top-level messages:
 	Log
@@ -28,6 +28,10 @@ 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.
+const _ = proto.ProtoPackageIsVersion1
+
 // Log message to display information
 type Log struct {
 	Timestamp  int64  `protobuf:"varint,1,opt,name=timestamp" json:"timestamp,omitempty"`
@@ -124,15 +128,16 @@ var _Demonstrator_serviceDesc = grpc.ServiceDesc{
 }
 
 var fileDescriptor0 = []byte{
-	// 148 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0xe2, 0x12, 0x4a, 0x49, 0xcd, 0xcd,
-	0xcf, 0x2b, 0x2e, 0x29, 0x4a, 0x2c, 0xc9, 0x2f, 0xd2, 0x2b, 0x28, 0xca, 0x2f, 0xc9, 0x17, 0x62,
-	0x4e, 0x2c, 0xc8, 0x54, 0xb2, 0xe4, 0x62, 0xf6, 0xc9, 0x4f, 0x17, 0x12, 0xe4, 0xe2, 0x2c, 0xc9,
-	0xcc, 0x4d, 0x2d, 0x2e, 0x49, 0xcc, 0x2d, 0x90, 0x60, 0x54, 0x60, 0xd4, 0x60, 0x16, 0x12, 0xe2,
-	0xe2, 0xca, 0x4c, 0x49, 0xcd, 0x2b, 0xc9, 0x4c, 0xcb, 0x4c, 0x2d, 0x92, 0x60, 0x02, 0x8a, 0x71,
-	0x0a, 0x71, 0x73, 0x31, 0xe7, 0xe4, 0xa7, 0x4b, 0x30, 0x83, 0x38, 0x4a, 0xac, 0x5c, 0xcc, 0x8e,
-	0xc9, 0xd9, 0x46, 0xfa, 0x5c, 0x3c, 0x2e, 0x48, 0x86, 0x0b, 0xc9, 0x73, 0xb1, 0x07, 0xa7, 0xe6,
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-	0x94, 0x00, 0x00, 0x00,
+	// 167 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0xe2, 0x52, 0x4c, 0x49, 0x2b, 0x2e,
+	0xd6, 0x07, 0x11, 0x29, 0xfa, 0x89, 0x05, 0x99, 0xfa, 0x29, 0xa9, 0xb9, 0xf9, 0x79, 0xc5, 0x25,
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+	0x50, 0x2e, 0x66, 0x9f, 0xfc, 0x74, 0x21, 0x19, 0x2e, 0xce, 0x92, 0xcc, 0xdc, 0xd4, 0xe2, 0x92,
+	0xc4, 0xdc, 0x02, 0x09, 0x46, 0x05, 0x46, 0x0d, 0xe6, 0x20, 0x84, 0x80, 0x90, 0x1c, 0x17, 0x57,
+	0x66, 0x4a, 0x6a, 0x5e, 0x49, 0x66, 0x5a, 0x66, 0x6a, 0x91, 0x04, 0x13, 0x50, 0x9a, 0x33, 0x08,
+	0x49, 0x44, 0x48, 0x80, 0x8b, 0x39, 0x27, 0x3f, 0x5d, 0x82, 0x19, 0x2c, 0x01, 0x62, 0x2a, 0xb1,
+	0x72, 0x31, 0x3b, 0x26, 0x67, 0x1b, 0xe9, 0x73, 0xf1, 0xb8, 0x20, 0x59, 0x2c, 0x24, 0xcf, 0xc5,
+	0x1e, 0x9c, 0x9a, 0x97, 0x02, 0xb2, 0x91, 0x43, 0x0f, 0x68, 0xbd, 0x1e, 0x90, 0x25, 0x05, 0x61,
+	0x01, 0x95, 0x2b, 0x31, 0x24, 0xb1, 0x81, 0x9d, 0x66, 0x0c, 0x08, 0x00, 0x00, 0xff, 0xff, 0xc3,
+	0xc3, 0x86, 0x7b, 0xbf, 0x00, 0x00, 0x00,
 }

dfssp/api/Makefile

-all:
-	protoc --go_out=plugins=grpc:. gRPCServices.proto

dfssp/api/gRPCServices.pb.go → dfssp/api/platform.pb.go

 // Code generated by protoc-gen-go.
-// source: gRPCServices.proto
+// source: dfss/dfssp/api/platform.proto
 // DO NOT EDIT!
 
 /*
 Package api is a generated protocol buffer package.
 
 It is generated from these files:
-	gRPCServices.proto
+	dfss/dfssp/api/platform.proto
 
 It has these top-level messages:
 	RegisterRequest
@@ -471,44 +471,44 @@ var _Platform_serviceDesc = grpc.ServiceDesc{
 }
 
 var fileDescriptor0 = []byte{
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