From: sssgun Date: Tue, 15 Jun 2021 07:15:49 +0000 (+0900) Subject: Initial commit X-Git-Tag: v0.1.2~7 X-Git-Url: https://go.fuhry.dev/?a=commitdiff_plain;h=0d4ce89d4ffbed9d1575bfa7381991300c42c522;p=grpc-quic.git Initial commit --- diff --git a/README.md b/README.md new file mode 100644 index 0000000..37a498a --- /dev/null +++ b/README.md @@ -0,0 +1,31 @@ +# gRPC over QUIC + +The Go language implementation of gRPC over QUIC. + +* gRPC-Go + QUIC-Go + * https://github.com/grpc/grpc-go + * https://github.com/lucas-clemente/quic-go +* Improved 'github.com/gfanton/grpc-quic' + +## Prerequisites + +- **[Go][]**: any one of the **three latest major** [releases][go-releases]. + +## Installation + +With [Go module][] support (Go 1.11+), simply add the following import + +```go +import "github.com/sssgun/grpc-quic" +``` + +## Usage +* gRPC-Go + QUIC-Go + * https://github.com/grpc/grpc-go/tree/master/examples/helloworld + * https://github.com/lucas-clemente/quic-go/tree/master/example + +### As a server +See the example server. + +### As a client +See the example client. \ No newline at end of file diff --git a/examples/helloworld/echo/main.go b/examples/helloworld/echo/main.go new file mode 100644 index 0000000..72d7777 --- /dev/null +++ b/examples/helloworld/echo/main.go @@ -0,0 +1,267 @@ +package main + +import ( + "context" + "crypto/rand" + "crypto/rsa" + "crypto/tls" + "crypto/x509" + "encoding/pem" + "log" + "math/big" + "net" + "os" + "os/signal" + "syscall" + "time" + + "github.com/lucas-clemente/quic-go" + qnet "github.com/sssgun/grpc-quic" + pb "github.com/sssgun/grpc-quic/examples/helloworld/helloworld" + "google.golang.org/grpc" +) + +const ( + addr = "localhost:4242" + defaultName = "world" +) + +// server is used to implement hello.GreeterServer. +type server struct { + pb.UnimplementedGreeterServer +} + +// SayHello implements hello.GreeterServer +func (s *server) SayHello(ctx context.Context, in *pb.HelloRequest) (*pb.HelloReply, error) { + log.Printf("Received: %v", in.GetName()) + return &pb.HelloReply{Message: "Hello " + in.GetName()}, nil +} + +func main() { + signalChan := make(chan os.Signal, 1) + signal.Notify(signalChan, + syscall.SIGHUP, + syscall.SIGINT, + syscall.SIGTERM, + syscall.SIGQUIT) + + go func() { + err := echoServer() + if err != nil { + log.Printf("failed to Echo Server. %s", err.Error()) + return + } + }() + + go func() { + err := echoQuicServer() + if err != nil { + log.Printf("failed to Echo QUIC Server. %s", err.Error()) + return + } + }() + + if err := echoClient(); err != nil { + log.Printf("failed to Client. %s", err.Error()) + return + } + + if err := echoQuicClient(); err != nil { + log.Printf("failed to QUIC Client. %s", err.Error()) + return + } + + exitChan := make(chan int) + go func() { + for { + s := <-signalChan + switch s { + // kill -SIGHUP XXXX + case syscall.SIGHUP: + log.Println("hungup") + exitChan <- 0 + + // kill -SIGINT XXXX or Ctrl+c + case syscall.SIGINT: + log.Println("Warikomi") + exitChan <- 0 + + // kill -SIGTERM XXXX + case syscall.SIGTERM: + log.Println("force stop") + exitChan <- 0 + + // kill -SIGQUIT XXXX + case syscall.SIGQUIT: + log.Println("stop and core dump") + exitChan <- 0 + + default: + log.Println("Unknown signal.") + exitChan <- 1 + } + } + }() + + log.Println("awaiting signal") + code := <-exitChan + os.Exit(code) +} + +func echoServer() error { + log.Println("starting echo server") + + lis, err := net.Listen("tcp", addr) + if err != nil { + log.Printf("Server: failed to listen. %s", err.Error()) + return err + } + + s := grpc.NewServer() + pb.RegisterGreeterServer(s, &server{}) + log.Printf("Server: listening at %s", lis.Addr().String()) + if err := s.Serve(lis); err != nil { + log.Printf("Server: failed to serve. %s", err.Error()) + return err + } + + log.Println("stopping echo server") + return nil +} + +func echoQuicServer() error { + log.Println("starting echo quic server") + + tlsConf, err := generateTLSConfig(false) + if err != nil { + log.Printf("QuicServer: failed to generateTLSConfig. %s", err.Error()) + return err + } + + ql, err := quic.ListenAddr(addr, tlsConf, nil) + if err != nil { + log.Printf("QuicServer: failed to ListenAddr. %s", err.Error()) + return err + } + listener := qnet.Listen(ql) + + s := grpc.NewServer() + pb.RegisterGreeterServer(s, &server{}) + log.Printf("QuicServer: listening at %v", listener.Addr()) + + if err := s.Serve(listener); err != nil { + log.Printf("QuicServer: failed to serve. %v", err) + return err + } + + log.Println("stopping echo quic server") + return nil +} + +func echoClient() error { + // Set up a connection to the server. + conn, err := grpc.Dial(addr, grpc.WithInsecure(), grpc.WithBlock()) + if err != nil { + log.Printf("Client: did not connect. %s", err.Error()) + return err + } + defer func(conn *grpc.ClientConn) { + err := conn.Close() + if err != nil { + log.Printf("Client: failed to close - grpc.Dial. %s", err.Error()) + } + }(conn) + c := pb.NewGreeterClient(conn) + + // Contact the server and print out its response. + name := defaultName + ctx, cancel := context.WithTimeout(context.Background(), time.Second) + defer cancel() + r, err := c.SayHello(ctx, &pb.HelloRequest{Name: name}) + if err != nil { + log.Printf("Client: could not greet. %s", err.Error()) + return err + } + log.Printf("Greeting: %s", r.GetMessage()) + + return nil +} + +func echoQuicClient() error { + tlsConf := &tls.Config{ + InsecureSkipVerify: true, + NextProtos: []string{"quic-echo-example"}, + } + + creds := qnet.NewCredentials(tlsConf) + + dialer := qnet.NewQuicDialer(tlsConf) + grpcOpts := []grpc.DialOption{ + grpc.WithContextDialer(dialer), + grpc.WithTransportCredentials(creds), + } + + conn, err := grpc.Dial(addr, grpcOpts...) + if err != nil { + log.Printf("QuicClient: failed to grpc.Dial. %s", err.Error()) + return err + } + defer func(conn *grpc.ClientConn) { + err := conn.Close() + if err != nil { + log.Printf("QuicClient: failed to close - grpc.Dial. %s", err.Error()) + } + }(conn) + + c := pb.NewGreeterClient(conn) + name := defaultName + ctx, cancel := context.WithTimeout(context.Background(), time.Second) + defer cancel() + + r, err := c.SayHello(ctx, &pb.HelloRequest{Name: name}) + if err != nil { + log.Printf("QuicClient: could not greet. %v", err) + return err + } + log.Printf("QuicClient: Greeting=%s", r.GetMessage()) + + return nil +} + +func generateTLSConfig(isFile bool) (*tls.Config, error) { + if isFile { + cert, err := tls.LoadX509KeyPair( + "/etc/letsencrypt/live/pangyo-dev01.kro.kr/fullchain.pem", + "/etc/letsencrypt/live/pangyo-dev01.kro.kr/privkey.pem") + if err != nil { + log.Printf("failed to tls.LoadX509KeyPair. %s", err.Error()) + return nil, err + } + return &tls.Config{Certificates: []tls.Certificate{cert}}, nil + } else { + key, err := rsa.GenerateKey(rand.Reader, 1024) + if err != nil { + log.Printf("failed to rsa.GenerateKey. %s", err.Error()) + return nil, err + } + template := x509.Certificate{SerialNumber: big.NewInt(1)} + certDER, err := x509.CreateCertificate(rand.Reader, &template, &template, &key.PublicKey, key) + if err != nil { + log.Printf("failed to x509.CreateCertificate. %s", err.Error()) + return nil, err + } + keyPEM := pem.EncodeToMemory(&pem.Block{Type: "RSA PRIVATE KEY", Bytes: x509.MarshalPKCS1PrivateKey(key)}) + certPEM := pem.EncodeToMemory(&pem.Block{Type: "CERTIFICATE", Bytes: certDER}) + + tlsCert, err := tls.X509KeyPair(certPEM, keyPEM) + if err != nil { + log.Printf("failed to tls.X509KeyPair. %s", err.Error()) + return nil, err + } + + return &tls.Config{ + Certificates: []tls.Certificate{tlsCert}, + NextProtos: []string{"quic-echo-example"}, + }, nil + } +} diff --git a/examples/helloworld/helloworld/helloworld.pb.go b/examples/helloworld/helloworld/helloworld.pb.go new file mode 100644 index 0000000..2d5cbf5 --- /dev/null +++ b/examples/helloworld/helloworld/helloworld.pb.go @@ -0,0 +1,240 @@ +// Copyright 2015 gRPC authors. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Code generated by protoc-gen-go. DO NOT EDIT. +// versions: +// protoc-gen-go v1.25.0 +// protoc v3.14.0 +// source: examples/helloworld/helloworld/helloworld.proto + +package helloworld + +import ( + proto "github.com/golang/protobuf/proto" + protoreflect "google.golang.org/protobuf/reflect/protoreflect" + protoimpl "google.golang.org/protobuf/runtime/protoimpl" + reflect "reflect" + sync "sync" +) + +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) +) + +// This is a compile-time assertion that a sufficiently up-to-date version +// of the legacy proto package is being used. +const _ = proto.ProtoPackageIsVersion4 + +// The request message containing the user's name. +type HelloRequest struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"` +} + +func (x *HelloRequest) Reset() { + *x = HelloRequest{} + if protoimpl.UnsafeEnabled { + mi := &file_examples_helloworld_helloworld_helloworld_proto_msgTypes[0] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *HelloRequest) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*HelloRequest) ProtoMessage() {} + +func (x *HelloRequest) ProtoReflect() protoreflect.Message { + mi := &file_examples_helloworld_helloworld_helloworld_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 HelloRequest.ProtoReflect.Descriptor instead. +func (*HelloRequest) Descriptor() ([]byte, []int) { + return file_examples_helloworld_helloworld_helloworld_proto_rawDescGZIP(), []int{0} +} + +func (x *HelloRequest) GetName() string { + if x != nil { + return x.Name + } + return "" +} + +// The response message containing the greetings +type HelloReply struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + Message string `protobuf:"bytes,1,opt,name=message,proto3" json:"message,omitempty"` +} + +func (x *HelloReply) Reset() { + *x = HelloReply{} + if protoimpl.UnsafeEnabled { + mi := &file_examples_helloworld_helloworld_helloworld_proto_msgTypes[1] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *HelloReply) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*HelloReply) ProtoMessage() {} + +func (x *HelloReply) ProtoReflect() protoreflect.Message { + mi := &file_examples_helloworld_helloworld_helloworld_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 HelloReply.ProtoReflect.Descriptor instead. +func (*HelloReply) Descriptor() ([]byte, []int) { + return file_examples_helloworld_helloworld_helloworld_proto_rawDescGZIP(), []int{1} +} + +func (x *HelloReply) GetMessage() string { + if x != nil { + return x.Message + } + return "" +} + +var File_examples_helloworld_helloworld_helloworld_proto protoreflect.FileDescriptor + +var file_examples_helloworld_helloworld_helloworld_proto_rawDesc = []byte{ + 0x0a, 0x2f, 0x65, 0x78, 0x61, 0x6d, 0x70, 0x6c, 0x65, 0x73, 0x2f, 0x68, 0x65, 0x6c, 0x6c, 0x6f, + 0x77, 0x6f, 0x72, 0x6c, 0x64, 0x2f, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x77, 0x6f, 0x72, 0x6c, 0x64, + 0x2f, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x77, 0x6f, 0x72, 0x6c, 0x64, 0x2e, 0x70, 0x72, 0x6f, 0x74, + 0x6f, 0x12, 0x0a, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x77, 0x6f, 0x72, 0x6c, 0x64, 0x22, 0x22, 0x0a, + 0x0c, 0x48, 0x65, 0x6c, 0x6c, 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file_examples_helloworld_helloworld_helloworld_proto_rawDescData = protoimpl.X.CompressGZIP(file_examples_helloworld_helloworld_helloworld_proto_rawDescData) + }) + return file_examples_helloworld_helloworld_helloworld_proto_rawDescData +} + +var file_examples_helloworld_helloworld_helloworld_proto_msgTypes = make([]protoimpl.MessageInfo, 2) +var file_examples_helloworld_helloworld_helloworld_proto_goTypes = []interface{}{ + (*HelloRequest)(nil), // 0: helloworld.HelloRequest + (*HelloReply)(nil), // 1: helloworld.HelloReply +} +var file_examples_helloworld_helloworld_helloworld_proto_depIdxs = []int32{ + 0, // 0: helloworld.Greeter.SayHello:input_type -> helloworld.HelloRequest + 1, // 1: helloworld.Greeter.SayHello:output_type -> helloworld.HelloReply + 1, // [1:2] is the sub-list for method output_type + 0, // [0:1] is the sub-list for method input_type + 0, // [0:0] is the sub-list for extension type_name + 0, // [0:0] is the sub-list for extension extendee + 0, // [0:0] is the sub-list for field type_name +} + +func init() { file_examples_helloworld_helloworld_helloworld_proto_init() } +func file_examples_helloworld_helloworld_helloworld_proto_init() { + if File_examples_helloworld_helloworld_helloworld_proto != nil { + return + } + if !protoimpl.UnsafeEnabled { + file_examples_helloworld_helloworld_helloworld_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*HelloRequest); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_examples_helloworld_helloworld_helloworld_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*HelloReply); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + } + type x struct{} + out := protoimpl.TypeBuilder{ + File: protoimpl.DescBuilder{ + GoPackagePath: reflect.TypeOf(x{}).PkgPath(), + RawDescriptor: file_examples_helloworld_helloworld_helloworld_proto_rawDesc, + NumEnums: 0, + NumMessages: 2, + NumExtensions: 0, + NumServices: 1, + }, + GoTypes: file_examples_helloworld_helloworld_helloworld_proto_goTypes, + DependencyIndexes: file_examples_helloworld_helloworld_helloworld_proto_depIdxs, + MessageInfos: file_examples_helloworld_helloworld_helloworld_proto_msgTypes, + }.Build() + File_examples_helloworld_helloworld_helloworld_proto = out.File + file_examples_helloworld_helloworld_helloworld_proto_rawDesc = nil + file_examples_helloworld_helloworld_helloworld_proto_goTypes = nil + file_examples_helloworld_helloworld_helloworld_proto_depIdxs = nil +} diff --git a/examples/helloworld/helloworld/helloworld.proto b/examples/helloworld/helloworld/helloworld.proto new file mode 100644 index 0000000..3fa8f93 --- /dev/null +++ b/examples/helloworld/helloworld/helloworld.proto @@ -0,0 +1,38 @@ +// Copyright 2015 gRPC authors. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +syntax = "proto3"; + +option go_package = "github.com/sssgun/grpc-quic/examples/helloworld/helloworld"; +option java_multiple_files = true; +option java_package = "io.grpc.examples.helloworld"; +option java_outer_classname = "HelloWorldProto"; + +package helloworld; + +// The greeting service definition. +service Greeter { + // Sends a greeting + rpc SayHello (HelloRequest) returns (HelloReply) {} +} + +// The request message containing the user's name. +message HelloRequest { + string name = 1; +} + +// The response message containing the greetings +message HelloReply { + string message = 1; +} diff --git a/examples/helloworld/helloworld/helloworld_grpc.pb.go b/examples/helloworld/helloworld/helloworld_grpc.pb.go new file mode 100644 index 0000000..ae27dfa --- /dev/null +++ b/examples/helloworld/helloworld/helloworld_grpc.pb.go @@ -0,0 +1,107 @@ +// Code generated by protoc-gen-go-grpc. DO NOT EDIT. +// versions: +// - protoc-gen-go-grpc v1.1.0 +// - protoc v3.14.0 +// source: examples/helloworld/helloworld/helloworld.proto + +package helloworld + +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 + +// GreeterClient is the client API for Greeter 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 GreeterClient interface { + // Sends a greeting + SayHello(ctx context.Context, in *HelloRequest, opts ...grpc.CallOption) (*HelloReply, error) +} + +type greeterClient struct { + cc grpc.ClientConnInterface +} + +func NewGreeterClient(cc grpc.ClientConnInterface) GreeterClient { + return &greeterClient{cc} +} + +func (c *greeterClient) SayHello(ctx context.Context, in *HelloRequest, opts ...grpc.CallOption) (*HelloReply, error) { + out := new(HelloReply) + err := c.cc.Invoke(ctx, "/helloworld.Greeter/SayHello", in, out, opts...) + if err != nil { + return nil, err + } + return out, nil +} + +// GreeterServer is the server API for Greeter service. +// All implementations must embed UnimplementedGreeterServer +// for forward compatibility +type GreeterServer interface { + // Sends a greeting + SayHello(context.Context, *HelloRequest) (*HelloReply, error) + mustEmbedUnimplementedGreeterServer() +} + +// UnimplementedGreeterServer must be embedded to have forward compatible implementations. +type UnimplementedGreeterServer struct { +} + +func (UnimplementedGreeterServer) SayHello(context.Context, *HelloRequest) (*HelloReply, error) { + return nil, status.Errorf(codes.Unimplemented, "method SayHello not implemented") +} +func (UnimplementedGreeterServer) mustEmbedUnimplementedGreeterServer() {} + +// UnsafeGreeterServer may be embedded to opt out of forward compatibility for this service. +// Use of this interface is not recommended, as added methods to GreeterServer will +// result in compilation errors. +type UnsafeGreeterServer interface { + mustEmbedUnimplementedGreeterServer() +} + +func RegisterGreeterServer(s grpc.ServiceRegistrar, srv GreeterServer) { + s.RegisterService(&Greeter_ServiceDesc, srv) +} + +func _Greeter_SayHello_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) { + in := new(HelloRequest) + if err := dec(in); err != nil { + return nil, err + } + if interceptor == nil { + return srv.(GreeterServer).SayHello(ctx, in) + } + info := &grpc.UnaryServerInfo{ + Server: srv, + FullMethod: "/helloworld.Greeter/SayHello", + } + handler := func(ctx context.Context, req interface{}) (interface{}, error) { + return srv.(GreeterServer).SayHello(ctx, req.(*HelloRequest)) + } + return interceptor(ctx, in, info, handler) +} + +// Greeter_ServiceDesc is the grpc.ServiceDesc for Greeter service. +// It's only intended for direct use with grpc.RegisterService, +// and not to be introspected or modified (even as a copy) +var Greeter_ServiceDesc = grpc.ServiceDesc{ + ServiceName: "helloworld.Greeter", + HandlerType: (*GreeterServer)(nil), + Methods: []grpc.MethodDesc{ + { + MethodName: "SayHello", + Handler: _Greeter_SayHello_Handler, + }, + }, + Streams: []grpc.StreamDesc{}, + Metadata: "examples/helloworld/helloworld/helloworld.proto", +} diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..1b46f80 --- /dev/null +++ b/go.mod @@ -0,0 +1,10 @@ +module github.com/sssgun/grpc-quic + +go 1.16 + +require ( + github.com/golang/protobuf v1.5.2 + github.com/lucas-clemente/quic-go v0.21.0 + google.golang.org/grpc v1.38.0 + google.golang.org/protobuf v1.26.0 +) diff --git a/go.sum b/go.sum new 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+sourcegraph.com/sourcegraph/go-diff v0.5.0/go.mod h1:kuch7UrkMzY0X+p9CRK03kfuPQ2zzQcaEFbx8wA8rck= +sourcegraph.com/sqs/pbtypes v0.0.0-20180604144634-d3ebe8f20ae4/go.mod h1:ketZ/q3QxT9HOBeFhu6RdvsftgpsbFHBF5Cas6cDKZ0= diff --git a/net.go b/net.go new file mode 100644 index 0000000..6f5c1d2 --- /dev/null +++ b/net.go @@ -0,0 +1,172 @@ +package grpcquic + +import ( + "context" + "crypto/tls" + "net" + "time" + + quic "github.com/lucas-clemente/quic-go" +) + +/////////////////////////////////////////////////////////////////////////////// +// Connection + +var _ net.Conn = (*Conn)(nil) + +type Conn struct { + sess quic.Session + stream quic.Stream +} + +func NewConn(sess quic.Session) (net.Conn, error) { + stream, err := sess.OpenStreamSync(context.Background()) + if err != nil { + return nil, err + } + + return &Conn{sess, stream}, nil +} + +// Read reads data from the connection. +// Read can be made to time out and return an Error with Timeout() == true +// after a fixed time limit; see SetDeadline and SetReadDeadline. +func (c *Conn) Read(b []byte) (n int, err error) { + return c.stream.Read(b) +} + +// Write writes data to the connection. +// Write can be made to time out and return an Error with Timeout() == true +// after a fixed time limit; see SetDeadline and SetWriteDeadline. +func (c *Conn) Write(b []byte) (n int, err error) { + return c.stream.Write(b) +} + +// Close closes the connection. +// Any blocked Read or Write operations will be unblocked and return errors. +func (c *Conn) Close() error { + // @TODO: log this + c.stream.Close() + + return c.sess.CloseWithError(0, "") +} + +// LocalAddr returns the local network address. +func (c *Conn) LocalAddr() net.Addr { + return c.sess.LocalAddr() +} + +// RemoteAddr returns the remote network address. +func (c *Conn) RemoteAddr() net.Addr { + return c.sess.RemoteAddr() +} + +// SetDeadline sets the read and write deadlines associated +// with the connection. It is equivalent to calling both +// SetReadDeadline and SetWriteDeadline. +// +// A deadline is an absolute time after which I/O operations +// fail with a timeout (see type Error) instead of +// blocking. The deadline applies to all future and pending +// I/O, not just the immediately following call to Read or +// Write. After a deadline has been exceeded, the connection +// can be refreshed by setting a deadline in the future. +// +// An idle timeout can be implemented by repeatedly extending +// the deadline after successful Read or Write calls. +// +// A zero value for t means I/O operations will not time out. +func (c *Conn) SetDeadline(t time.Time) error { + return c.stream.SetDeadline(t) +} + +// SetReadDeadline sets the deadline for future Read calls +// and any currently-blocked Read call. +// A zero value for t means Read will not time out. +func (c *Conn) SetReadDeadline(t time.Time) error { + return c.stream.SetReadDeadline(t) + +} + +// SetWriteDeadline sets the deadline for future Write calls +// and any currently-blocked Write call. +// Even if write times out, it may return n > 0, indicating that +// some of the data was successfully written. +// A zero value for t means Write will not time out. +func (c *Conn) SetWriteDeadline(t time.Time) error { + return c.stream.SetWriteDeadline(t) +} + +/////////////////////////////////////////////////////////////////////////////// +// Listener + +var _ net.Listener = (*Listener)(nil) + +type Listener struct { + ql quic.Listener +} + +func Listen(ql quic.Listener) net.Listener { + return &Listener{ql} +} + +// Accept waits for and returns the next connection to the listener. +func (l *Listener) Accept() (net.Conn, error) { + sess, err := l.ql.Accept(context.Background()) + if err != nil { + return nil, err + } + + stream, err := sess.AcceptStream(context.Background()) + if err != nil { + return nil, err + } + + return &Conn{sess, stream}, nil +} + +// Close closes the listener. +// Any blocked Accept operations will be unblocked and return errors. +func (l *Listener) Close() error { + return l.ql.Close() +} + +// Addr returns the listener's network address. +func (l *Listener) Addr() net.Addr { + return l.ql.Addr() +} + +/////////////////////////////////////////////////////////////////////////////// +// Dialer + +var quicConfig = &quic.Config{ + // MaxReceiveStreamFlowControlWindow: 3 * (1 << 20), // 3 MB + // MaxReceiveConnectionFlowControlWindow: 4.5 * (1 << 20), // 4.5 MB + // Versions: []quic.VersionNumber{101}, + // AcceptCookie: func(clientAddr net.Addr, cookie *quic.Cookie) bool { + // // TODO(#6): require source address validation when under load + // return true + // }, + KeepAlive: true, +} + +func NewPacketConn(addr string) (net.PacketConn, error) { + // create a packet conn for outgoing connections + udpAddr, err := net.ResolveUDPAddr("udp", addr) + if err != nil { + return nil, err + } + + return net.ListenUDP("udp", udpAddr) +} + +func NewQuicDialer(tlsConf *tls.Config) func(context.Context, string) (net.Conn, error) { + return func(ctx context.Context, target string) (net.Conn, error) { + sess, err := quic.DialAddrContext(ctx, target, tlsConf, quicConfig) + if err != nil { + return nil, err + } + + return NewConn(sess) + } +} diff --git a/transports.go b/transports.go new file mode 100644 index 0000000..2e764a8 --- /dev/null +++ b/transports.go @@ -0,0 +1,115 @@ +package grpcquic + +import ( + "context" + "crypto/tls" + "net" + + "google.golang.org/grpc/credentials" +) + +var _ credentials.AuthInfo = (*Info)(nil) + +// Info contains the auth information +type Info struct { + conn *Conn +} + +func NewInfo(c *Conn) *Info { + return &Info{c} +} + +// AuthType returns the type of Info as a string. +func (i *Info) AuthType() string { + return "quic-tls" +} + +func (i *Info) Conn() net.Conn { + return i.conn +} + +var _ credentials.TransportCredentials = (*Credentials)(nil) + +type Credentials struct { + tlsConfig *tls.Config + isQuicConnection bool + serverName string + + grpcCreds credentials.TransportCredentials +} + +func NewCredentials(tlsConfig *tls.Config) credentials.TransportCredentials { + grpcCreds := credentials.NewTLS(tlsConfig) + return &Credentials{ + grpcCreds: grpcCreds, + tlsConfig: tlsConfig, + } +} + +// ClientHandshake does the authentication handshake specified by the corresponding +// authentication protocol on rawConn for clients. It returns the authenticated +// connection and the corresponding auth information about the connection. +// Implementations must use the provided context to implement timely cancellation. +// gRPC will try to reconnect if the error returned is a temporary error +// (io.EOF, context.DeadlineExceeded or err.Temporary() == true). +// If the returned error is a wrapper error, implementations should make sure that +// the error implements Temporary() to have the correct retry behaviors. +// +// If the returned net.Conn is closed, it MUST close the net.Conn provided. +func (pt *Credentials) ClientHandshake(ctx context.Context, authority string, conn net.Conn) (net.Conn, credentials.AuthInfo, error) { + if c, ok := conn.(*Conn); ok { + pt.isQuicConnection = true + return conn, NewInfo(c), nil + } + + return pt.grpcCreds.ClientHandshake(ctx, authority, conn) +} + +// ServerHandshake does the authentication handshake for servers. It returns +// the authenticated connection and the corresponding auth information about +// the connection. +// +// If the returned net.Conn is closed, it MUST close the net.Conn provided. +func (pt *Credentials) ServerHandshake(conn net.Conn) (net.Conn, credentials.AuthInfo, error) { + if c, ok := conn.(*Conn); ok { + pt.isQuicConnection = true + ainfo := NewInfo(c) + return conn, ainfo, nil + } + + return pt.grpcCreds.ServerHandshake(conn) +} + +// Info provides the ProtocolInfo of this Credentials. +func (pt *Credentials) Info() credentials.ProtocolInfo { + if pt.isQuicConnection { + return credentials.ProtocolInfo{ + // ProtocolVersion is the gRPC wire protocol version. + ProtocolVersion: "/quic/1.0.0", + // SecurityProtocol is the security protocol in use. + SecurityProtocol: "quic-tls", + // SecurityVersion is the security protocol version. + //SecurityVersion: "1.2.0", + // ServerName is the user-configured server name. + ServerName: pt.serverName, + } + } + + return pt.grpcCreds.Info() +} + +// Clone makes a copy of this Credentials. +func (pt *Credentials) Clone() credentials.TransportCredentials { + return &Credentials{ + tlsConfig: pt.tlsConfig.Clone(), + grpcCreds: pt.grpcCreds.Clone(), + } +} + +// OverrideServerName overrides the server name used to verify the hostname on the returned certificates from the server. +// gRPC internals also use it to override the virtual hosting name if it is set. +// It must be called before dialing. Currently, this is only used by grpclb. +func (pt *Credentials) OverrideServerName(name string) error { + pt.serverName = name + return pt.grpcCreds.OverrideServerName(name) +}