proto: add SSHUploadPackWithSidechannel

This adds the proto definition for SSHUploadPackWithSidechannel along
with the accompanying auto-generated code.

5 files changed, 328 insertions, 104 deletions

diff --git a/proto/go/gitalypb/ssh.pb.go b/proto/go/gitalypb/ssh.pb.go
index c524ea2eb..32a62d738 100644
--- a/proto/go/gitalypb/ssh.pb.go
+++ b/proto/go/gitalypb/ssh.pb.go
@@ -162,6 +162,110 @@ func (x *SSHUploadPackResponse) GetExitStatus() *ExitStatus {
 	return nil
 }
 
+type SSHUploadPackWithSidechannelRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// 'repository' must be present in the first message.
+	Repository *Repository `protobuf:"bytes,1,opt,name=repository,proto3" json:"repository,omitempty"`
+	// Parameters to use with git -c (key=value pairs)
+	GitConfigOptions []string `protobuf:"bytes,2,rep,name=git_config_options,json=gitConfigOptions,proto3" json:"git_config_options,omitempty"`
+	// Git protocol version
+	GitProtocol string `protobuf:"bytes,3,opt,name=git_protocol,json=gitProtocol,proto3" json:"git_protocol,omitempty"`
+}
+
+func (x *SSHUploadPackWithSidechannelRequest) Reset() {
+	*x = SSHUploadPackWithSidechannelRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_ssh_proto_msgTypes[2]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *SSHUploadPackWithSidechannelRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*SSHUploadPackWithSidechannelRequest) ProtoMessage() {}
+
+func (x *SSHUploadPackWithSidechannelRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_ssh_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 SSHUploadPackWithSidechannelRequest.ProtoReflect.Descriptor instead.
+func (*SSHUploadPackWithSidechannelRequest) Descriptor() ([]byte, []int) {
+	return file_ssh_proto_rawDescGZIP(), []int{2}
+}
+
+func (x *SSHUploadPackWithSidechannelRequest) GetRepository() *Repository {
+	if x != nil {
+		return x.Repository
+	}
+	return nil
+}
+
+func (x *SSHUploadPackWithSidechannelRequest) GetGitConfigOptions() []string {
+	if x != nil {
+		return x.GitConfigOptions
+	}
+	return nil
+}
+
+func (x *SSHUploadPackWithSidechannelRequest) GetGitProtocol() string {
+	if x != nil {
+		return x.GitProtocol
+	}
+	return ""
+}
+
+type SSHUploadPackWithSidechannelResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *SSHUploadPackWithSidechannelResponse) Reset() {
+	*x = SSHUploadPackWithSidechannelResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_ssh_proto_msgTypes[3]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *SSHUploadPackWithSidechannelResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*SSHUploadPackWithSidechannelResponse) ProtoMessage() {}
+
+func (x *SSHUploadPackWithSidechannelResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_ssh_proto_msgTypes[3]
+	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 SSHUploadPackWithSidechannelResponse.ProtoReflect.Descriptor instead.
+func (*SSHUploadPackWithSidechannelResponse) Descriptor() ([]byte, []int) {
+	return file_ssh_proto_rawDescGZIP(), []int{3}
+}
+
 type SSHReceivePackRequest struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -185,7 +289,7 @@ type SSHReceivePackRequest struct {
 func (x *SSHReceivePackRequest) Reset() {
 	*x = SSHReceivePackRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_ssh_proto_msgTypes[2]
+		mi := &file_ssh_proto_msgTypes[4]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -198,7 +302,7 @@ func (x *SSHReceivePackRequest) String() string {
 func (*SSHReceivePackRequest) ProtoMessage() {}
 
 func (x *SSHReceivePackRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_ssh_proto_msgTypes[2]
+	mi := &file_ssh_proto_msgTypes[4]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -211,7 +315,7 @@ func (x *SSHReceivePackRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use SSHReceivePackRequest.ProtoReflect.Descriptor instead.
 func (*SSHReceivePackRequest) Descriptor() ([]byte, []int) {
-	return file_ssh_proto_rawDescGZIP(), []int{2}
+	return file_ssh_proto_rawDescGZIP(), []int{4}
 }
 
 func (x *SSHReceivePackRequest) GetRepository() *Repository {
@@ -280,7 +384,7 @@ type SSHReceivePackResponse struct {
 func (x *SSHReceivePackResponse) Reset() {
 	*x = SSHReceivePackResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_ssh_proto_msgTypes[3]
+		mi := &file_ssh_proto_msgTypes[5]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -293,7 +397,7 @@ func (x *SSHReceivePackResponse) String() string {
 func (*SSHReceivePackResponse) ProtoMessage() {}
 
 func (x *SSHReceivePackResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_ssh_proto_msgTypes[3]
+	mi := &file_ssh_proto_msgTypes[5]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -306,7 +410,7 @@ func (x *SSHReceivePackResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use SSHReceivePackResponse.ProtoReflect.Descriptor instead.
 func (*SSHReceivePackResponse) Descriptor() ([]byte, []int) {
-	return file_ssh_proto_rawDescGZIP(), []int{3}
+	return file_ssh_proto_rawDescGZIP(), []int{5}
 }
 
 func (x *SSHReceivePackResponse) GetStdout() []byte {
@@ -344,7 +448,7 @@ type SSHUploadArchiveRequest struct {
 func (x *SSHUploadArchiveRequest) Reset() {
 	*x = SSHUploadArchiveRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_ssh_proto_msgTypes[4]
+		mi := &file_ssh_proto_msgTypes[6]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -357,7 +461,7 @@ func (x *SSHUploadArchiveRequest) String() string {
 func (*SSHUploadArchiveRequest) ProtoMessage() {}
 
 func (x *SSHUploadArchiveRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_ssh_proto_msgTypes[4]
+	mi := &file_ssh_proto_msgTypes[6]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -370,7 +474,7 @@ func (x *SSHUploadArchiveRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use SSHUploadArchiveRequest.ProtoReflect.Descriptor instead.
 func (*SSHUploadArchiveRequest) Descriptor() ([]byte, []int) {
-	return file_ssh_proto_rawDescGZIP(), []int{4}
+	return file_ssh_proto_rawDescGZIP(), []int{6}
 }
 
 func (x *SSHUploadArchiveRequest) GetRepository() *Repository {
@@ -403,7 +507,7 @@ type SSHUploadArchiveResponse struct {
 func (x *SSHUploadArchiveResponse) Reset() {
 	*x = SSHUploadArchiveResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_ssh_proto_msgTypes[5]
+		mi := &file_ssh_proto_msgTypes[7]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -416,7 +520,7 @@ func (x *SSHUploadArchiveResponse) String() string {
 func (*SSHUploadArchiveResponse) ProtoMessage() {}
 
 func (x *SSHUploadArchiveResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_ssh_proto_msgTypes[5]
+	mi := &file_ssh_proto_msgTypes[7]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -429,7 +533,7 @@ func (x *SSHUploadArchiveResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use SSHUploadArchiveResponse.ProtoReflect.Descriptor instead.
 func (*SSHUploadArchiveResponse) Descriptor() ([]byte, []int) {
-	return file_ssh_proto_rawDescGZIP(), []int{5}
+	return file_ssh_proto_rawDescGZIP(), []int{7}
 }
 
 func (x *SSHUploadArchiveResponse) GetStdout() []byte {
@@ -480,69 +584,91 @@ var file_ssh_proto_rawDesc = []byte{
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 }
 
 var (
@@ -557,35 +683,40 @@ func file_ssh_proto_rawDescGZIP() []byte {
 	return file_ssh_proto_rawDescData
 }
 
-var file_ssh_proto_msgTypes = make([]protoimpl.MessageInfo, 6)
+var file_ssh_proto_msgTypes = make([]protoimpl.MessageInfo, 8)
 var file_ssh_proto_goTypes = []interface{}{
-	(*SSHUploadPackRequest)(nil),     // 0: gitaly.SSHUploadPackRequest
-	(*SSHUploadPackResponse)(nil),    // 1: gitaly.SSHUploadPackResponse
-	(*SSHReceivePackRequest)(nil),    // 2: gitaly.SSHReceivePackRequest
-	(*SSHReceivePackResponse)(nil),   // 3: gitaly.SSHReceivePackResponse
-	(*SSHUploadArchiveRequest)(nil),  // 4: gitaly.SSHUploadArchiveRequest
-	(*SSHUploadArchiveResponse)(nil), // 5: gitaly.SSHUploadArchiveResponse
-	(*Repository)(nil),               // 6: gitaly.Repository
-	(*ExitStatus)(nil),               // 7: gitaly.ExitStatus
+	(*SSHUploadPackRequest)(nil),                 // 0: gitaly.SSHUploadPackRequest
+	(*SSHUploadPackResponse)(nil),                // 1: gitaly.SSHUploadPackResponse
+	(*SSHUploadPackWithSidechannelRequest)(nil),  // 2: gitaly.SSHUploadPackWithSidechannelRequest
+	(*SSHUploadPackWithSidechannelResponse)(nil), // 3: gitaly.SSHUploadPackWithSidechannelResponse
+	(*SSHReceivePackRequest)(nil),                // 4: gitaly.SSHReceivePackRequest
+	(*SSHReceivePackResponse)(nil),               // 5: gitaly.SSHReceivePackResponse
+	(*SSHUploadArchiveRequest)(nil),              // 6: gitaly.SSHUploadArchiveRequest
+	(*SSHUploadArchiveResponse)(nil),             // 7: gitaly.SSHUploadArchiveResponse
+	(*Repository)(nil),                           // 8: gitaly.Repository
+	(*ExitStatus)(nil),                           // 9: gitaly.ExitStatus
 }
 var file_ssh_proto_depIdxs = []int32{
-	6, // 0: gitaly.SSHUploadPackRequest.repository:type_name -> gitaly.Repository
-	7, // 1: gitaly.SSHUploadPackResponse.exit_status:type_name -> gitaly.ExitStatus
-	6, // 2: gitaly.SSHReceivePackRequest.repository:type_name -> gitaly.Repository
-	7, // 3: gitaly.SSHReceivePackResponse.exit_status:type_name -> gitaly.ExitStatus
-	6, // 4: gitaly.SSHUploadArchiveRequest.repository:type_name -> gitaly.Repository
-	7, // 5: gitaly.SSHUploadArchiveResponse.exit_status:type_name -> gitaly.ExitStatus
-	0, // 6: gitaly.SSHService.SSHUploadPack:input_type -> gitaly.SSHUploadPackRequest
-	2, // 7: gitaly.SSHService.SSHReceivePack:input_type -> gitaly.SSHReceivePackRequest
-	4, // 8: gitaly.SSHService.SSHUploadArchive:input_type -> gitaly.SSHUploadArchiveRequest
-	1, // 9: gitaly.SSHService.SSHUploadPack:output_type -> gitaly.SSHUploadPackResponse
-	3, // 10: gitaly.SSHService.SSHReceivePack:output_type -> gitaly.SSHReceivePackResponse
-	5, // 11: gitaly.SSHService.SSHUploadArchive:output_type -> gitaly.SSHUploadArchiveResponse
-	9, // [9:12] is the sub-list for method output_type
-	6, // [6:9] is the sub-list for method input_type
-	6, // [6:6] is the sub-list for extension type_name
-	6, // [6:6] is the sub-list for extension extendee
-	0, // [0:6] is the sub-list for field type_name
+	8,  // 0: gitaly.SSHUploadPackRequest.repository:type_name -> gitaly.Repository
+	9,  // 1: gitaly.SSHUploadPackResponse.exit_status:type_name -> gitaly.ExitStatus
+	8,  // 2: gitaly.SSHUploadPackWithSidechannelRequest.repository:type_name -> gitaly.Repository
+	8,  // 3: gitaly.SSHReceivePackRequest.repository:type_name -> gitaly.Repository
+	9,  // 4: gitaly.SSHReceivePackResponse.exit_status:type_name -> gitaly.ExitStatus
+	8,  // 5: gitaly.SSHUploadArchiveRequest.repository:type_name -> gitaly.Repository
+	9,  // 6: gitaly.SSHUploadArchiveResponse.exit_status:type_name -> gitaly.ExitStatus
+	0,  // 7: gitaly.SSHService.SSHUploadPack:input_type -> gitaly.SSHUploadPackRequest
+	2,  // 8: gitaly.SSHService.SSHUploadPackWithSidechannel:input_type -> gitaly.SSHUploadPackWithSidechannelRequest
+	4,  // 9: gitaly.SSHService.SSHReceivePack:input_type -> gitaly.SSHReceivePackRequest
+	6,  // 10: gitaly.SSHService.SSHUploadArchive:input_type -> gitaly.SSHUploadArchiveRequest
+	1,  // 11: gitaly.SSHService.SSHUploadPack:output_type -> gitaly.SSHUploadPackResponse
+	3,  // 12: gitaly.SSHService.SSHUploadPackWithSidechannel:output_type -> gitaly.SSHUploadPackWithSidechannelResponse
+	5,  // 13: gitaly.SSHService.SSHReceivePack:output_type -> gitaly.SSHReceivePackResponse
+	7,  // 14: gitaly.SSHService.SSHUploadArchive:output_type -> gitaly.SSHUploadArchiveResponse
+	11, // [11:15] is the sub-list for method output_type
+	7,  // [7:11] is the sub-list for method input_type
+	7,  // [7:7] is the sub-list for extension type_name
+	7,  // [7:7] is the sub-list for extension extendee
+	0,  // [0:7] is the sub-list for field type_name
 }
 
 func init() { file_ssh_proto_init() }
@@ -621,7 +752,7 @@ func file_ssh_proto_init() {
 			}
 		}
 		file_ssh_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SSHReceivePackRequest); i {
+			switch v := v.(*SSHUploadPackWithSidechannelRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -633,7 +764,7 @@ func file_ssh_proto_init() {
 			}
 		}
 		file_ssh_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SSHReceivePackResponse); i {
+			switch v := v.(*SSHUploadPackWithSidechannelResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -645,7 +776,7 @@ func file_ssh_proto_init() {
 			}
 		}
 		file_ssh_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SSHUploadArchiveRequest); i {
+			switch v := v.(*SSHReceivePackRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -657,6 +788,30 @@ func file_ssh_proto_init() {
 			}
 		}
 		file_ssh_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*SSHReceivePackResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_ssh_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*SSHUploadArchiveRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_ssh_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*SSHUploadArchiveResponse); i {
 			case 0:
 				return &v.state
@@ -675,7 +830,7 @@ func file_ssh_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_ssh_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   6,
+			NumMessages:   8,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
diff --git a/proto/go/gitalypb/ssh_grpc.pb.go b/proto/go/gitalypb/ssh_grpc.pb.go
index 5d13f9896..21f761b8e 100644
--- a/proto/go/gitalypb/ssh_grpc.pb.go
+++ b/proto/go/gitalypb/ssh_grpc.pb.go
@@ -20,6 +20,8 @@ const _ = grpc.SupportPackageIsVersion7
 type SSHServiceClient interface {
 	// To forward 'git upload-pack' to Gitaly for SSH sessions
 	SSHUploadPack(ctx context.Context, opts ...grpc.CallOption) (SSHService_SSHUploadPackClient, error)
+	// To forward 'git upload-pack' to Gitaly for SSH sessions, via sidechannels
+	SSHUploadPackWithSidechannel(ctx context.Context, in *SSHUploadPackWithSidechannelRequest, opts ...grpc.CallOption) (*SSHUploadPackWithSidechannelResponse, error)
 	// To forward 'git receive-pack' to Gitaly for SSH sessions
 	SSHReceivePack(ctx context.Context, opts ...grpc.CallOption) (SSHService_SSHReceivePackClient, error)
 	// To forward 'git upload-archive' to Gitaly for SSH sessions
@@ -65,6 +67,15 @@ func (x *sSHServiceSSHUploadPackClient) Recv() (*SSHUploadPackResponse, error) {
 	return m, nil
 }
 
+func (c *sSHServiceClient) SSHUploadPackWithSidechannel(ctx context.Context, in *SSHUploadPackWithSidechannelRequest, opts ...grpc.CallOption) (*SSHUploadPackWithSidechannelResponse, error) {
+	out := new(SSHUploadPackWithSidechannelResponse)
+	err := c.cc.Invoke(ctx, "/gitaly.SSHService/SSHUploadPackWithSidechannel", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 func (c *sSHServiceClient) SSHReceivePack(ctx context.Context, opts ...grpc.CallOption) (SSHService_SSHReceivePackClient, error) {
 	stream, err := c.cc.NewStream(ctx, &SSHService_ServiceDesc.Streams[1], "/gitaly.SSHService/SSHReceivePack", opts...)
 	if err != nil {
@@ -133,6 +144,8 @@ func (x *sSHServiceSSHUploadArchiveClient) Recv() (*SSHUploadArchiveResponse, er
 type SSHServiceServer interface {
 	// To forward 'git upload-pack' to Gitaly for SSH sessions
 	SSHUploadPack(SSHService_SSHUploadPackServer) error
+	// To forward 'git upload-pack' to Gitaly for SSH sessions, via sidechannels
+	SSHUploadPackWithSidechannel(context.Context, *SSHUploadPackWithSidechannelRequest) (*SSHUploadPackWithSidechannelResponse, error)
 	// To forward 'git receive-pack' to Gitaly for SSH sessions
 	SSHReceivePack(SSHService_SSHReceivePackServer) error
 	// To forward 'git upload-archive' to Gitaly for SSH sessions
@@ -147,6 +160,9 @@ type UnimplementedSSHServiceServer struct {
 func (UnimplementedSSHServiceServer) SSHUploadPack(SSHService_SSHUploadPackServer) error {
 	return status.Errorf(codes.Unimplemented, "method SSHUploadPack not implemented")
 }
+func (UnimplementedSSHServiceServer) SSHUploadPackWithSidechannel(context.Context, *SSHUploadPackWithSidechannelRequest) (*SSHUploadPackWithSidechannelResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method SSHUploadPackWithSidechannel not implemented")
+}
 func (UnimplementedSSHServiceServer) SSHReceivePack(SSHService_SSHReceivePackServer) error {
 	return status.Errorf(codes.Unimplemented, "method SSHReceivePack not implemented")
 }
@@ -192,6 +208,24 @@ func (x *sSHServiceSSHUploadPackServer) Recv() (*SSHUploadPackRequest, error) {
 	return m, nil
 }
 
+func _SSHService_SSHUploadPackWithSidechannel_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(SSHUploadPackWithSidechannelRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(SSHServiceServer).SSHUploadPackWithSidechannel(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/gitaly.SSHService/SSHUploadPackWithSidechannel",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(SSHServiceServer).SSHUploadPackWithSidechannel(ctx, req.(*SSHUploadPackWithSidechannelRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 func _SSHService_SSHReceivePack_Handler(srv interface{}, stream grpc.ServerStream) error {
 	return srv.(SSHServiceServer).SSHReceivePack(&sSHServiceSSHReceivePackServer{stream})
 }
@@ -250,7 +284,12 @@ func (x *sSHServiceSSHUploadArchiveServer) Recv() (*SSHUploadArchiveRequest, err
 var SSHService_ServiceDesc = grpc.ServiceDesc{
 	ServiceName: "gitaly.SSHService",
 	HandlerType: (*SSHServiceServer)(nil),
-	Methods:     []grpc.MethodDesc{},
+	Methods: []grpc.MethodDesc{
+		{
+			MethodName: "SSHUploadPackWithSidechannel",
+			Handler:    _SSHService_SSHUploadPackWithSidechannel_Handler,
+		},
+	},
 	Streams: []grpc.StreamDesc{
 		{
 			StreamName:    "SSHUploadPack",
diff --git a/proto/ssh.proto b/proto/ssh.proto
index 4545effbf..732d26a2c 100644
--- a/proto/ssh.proto
+++ b/proto/ssh.proto
@@ -15,6 +15,13 @@ service SSHService {
     };
   }
 
+  // To forward 'git upload-pack' to Gitaly for SSH sessions, via sidechannels
+  rpc SSHUploadPackWithSidechannel(SSHUploadPackWithSidechannelRequest) returns (SSHUploadPackWithSidechannelResponse) {
+    option (op_type) = {
+      op: ACCESSOR
+    };
+  }
+
   // To forward 'git receive-pack' to Gitaly for SSH sessions
   rpc SSHReceivePack(stream SSHReceivePackRequest) returns (stream SSHReceivePackResponse) {
     option (op_type) = {
@@ -55,6 +62,18 @@ message SSHUploadPackResponse {
   ExitStatus exit_status = 3;
 }
 
+message SSHUploadPackWithSidechannelRequest {
+  // 'repository' must be present in the first message.
+  Repository repository = 1 [(target_repository)=true];
+  // Parameters to use with git -c (key=value pairs)
+  repeated string git_config_options = 2;
+
+  // Git protocol version
+  string git_protocol = 3;
+}
+
+message SSHUploadPackWithSidechannelResponse {}
+
 message SSHReceivePackRequest {
   // 'repository' must be present in the first message.
   Repository repository = 1 [(target_repository)=true];
diff --git a/ruby/proto/gitaly/ssh_pb.rb b/ruby/proto/gitaly/ssh_pb.rb
index fdde47b80..49e65cc14 100644
--- a/ruby/proto/gitaly/ssh_pb.rb
+++ b/ruby/proto/gitaly/ssh_pb.rb
@@ -18,6 +18,13 @@ Google::Protobuf::DescriptorPool.generated_pool.build do
       optional :stderr, :bytes, 2
       optional :exit_status, :message, 3, "gitaly.ExitStatus"
     end
+    add_message "gitaly.SSHUploadPackWithSidechannelRequest" do
+      optional :repository, :message, 1, "gitaly.Repository"
+      repeated :git_config_options, :string, 2
+      optional :git_protocol, :string, 3
+    end
+    add_message "gitaly.SSHUploadPackWithSidechannelResponse" do
+    end
     add_message "gitaly.SSHReceivePackRequest" do
       optional :repository, :message, 1, "gitaly.Repository"
       optional :stdin, :bytes, 2
@@ -47,6 +54,8 @@ end
 module Gitaly
   SSHUploadPackRequest = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("gitaly.SSHUploadPackRequest").msgclass
   SSHUploadPackResponse = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("gitaly.SSHUploadPackResponse").msgclass
+  SSHUploadPackWithSidechannelRequest = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("gitaly.SSHUploadPackWithSidechannelRequest").msgclass
+  SSHUploadPackWithSidechannelResponse = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("gitaly.SSHUploadPackWithSidechannelResponse").msgclass
   SSHReceivePackRequest = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("gitaly.SSHReceivePackRequest").msgclass
   SSHReceivePackResponse = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("gitaly.SSHReceivePackResponse").msgclass
   SSHUploadArchiveRequest = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("gitaly.SSHUploadArchiveRequest").msgclass
diff --git a/ruby/proto/gitaly/ssh_services_pb.rb b/ruby/proto/gitaly/ssh_services_pb.rb
index ed4527087..a50b0fa5a 100644
--- a/ruby/proto/gitaly/ssh_services_pb.rb
+++ b/ruby/proto/gitaly/ssh_services_pb.rb
@@ -16,6 +16,8 @@ module Gitaly
 
       # To forward 'git upload-pack' to Gitaly for SSH sessions
       rpc :SSHUploadPack, stream(::Gitaly::SSHUploadPackRequest), stream(::Gitaly::SSHUploadPackResponse)
+      # To forward 'git upload-pack' to Gitaly for SSH sessions, via sidechannels
+      rpc :SSHUploadPackWithSidechannel, ::Gitaly::SSHUploadPackWithSidechannelRequest, ::Gitaly::SSHUploadPackWithSidechannelResponse
       # To forward 'git receive-pack' to Gitaly for SSH sessions
       rpc :SSHReceivePack, stream(::Gitaly::SSHReceivePackRequest), stream(::Gitaly::SSHReceivePackResponse)
       # To forward 'git upload-archive' to Gitaly for SSH sessions