use meter directly

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

.github/workflows/autoapprove.yml

@@ -0,0 +1,20 @@
+name: "autoapprove"
+
+on:
+  pull_request_target:
+    types: [assigned, opened, synchronize, reopened]
+
+permissions:
+  pull-requests: write
+  contents: write
+
+jobs:
+  autoapprove:
+    runs-on: ubuntu-latest
+    steps:
+      - name: approve
+        uses: hmarr/auto-approve-action@v3
+        if: github.actor == 'vtolstov' || github.actor == 'dependabot[bot]'
+        id: approve
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/automerge.yml

@@ -0,0 +1,21 @@
+name: "automerge"
+
+on:
+  pull_request_target:
+    types: [assigned, opened, synchronize, reopened]
+
+permissions:
+  pull-requests: write
+  contents: write
+
+jobs:
+  automerge:
+    runs-on: ubuntu-latest
+    if: github.actor == 'vtolstov'
+    steps:
+      - name: merge
+        id: merge
+        run: gh pr merge --auto --merge "$PR_URL"
+        env:
+          PR_URL: ${{github.event.pull_request.html_url}}
+          GITHUB_TOKEN: ${{secrets.TOKEN}}

.github/workflows/build.yml

@@ -3,19 +3,20 @@ on:
  push:
     branches:
     - master
+    - v3
 jobs:
   test:
     name: test
     runs-on: ubuntu-latest
     steps:
     - name: setup
-      uses: actions/setup-go@v2
+      uses: actions/setup-go@v3
       with:
-        go-version: 1.16
+        go-version: 1.17
     - name: checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
     - name: cache
-      uses: actions/cache@v2
+      uses: actions/cache@v3
       with:
         path: ~/go/pkg/mod
         key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
@@ -31,9 +32,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: lint
-        uses: golangci/golangci-lint-action@v2
+        uses: golangci/golangci-lint-action@v3.4.0
         continue-on-error: true
         with:
           # Required: the version of golangci-lint is required and must be specified without patch version: we always use the latest patch version.

.github/workflows/codeql-analysis.yml

@@ -9,7 +9,7 @@
 # the `language` matrix defined below to confirm you have the correct set of
 # supported CodeQL languages.
 #
-name: "CodeQL"
+name: "codeql"
 
 on:
   workflow_run:
@@ -17,16 +17,16 @@ on:
     types:
       - completed
   push:
-    branches: [ master ]
+    branches: [ master, v3 ]
   pull_request:
     # The branches below must be a subset of the branches above
-    branches: [ master ]
+    branches: [ master, v3 ]
   schedule:
     - cron: '34 1 * * 0'
 
 jobs:
   analyze:
-    name: Analyze
+    name: analyze
     runs-on: ubuntu-latest
     permissions:
       actions: read
@@ -42,12 +42,15 @@ jobs:
         # https://docs.github.com/en/free-pro-team@latest/github/finding-security-vulnerabilities-and-errors-in-your-code/configuring-code-scanning#changing-the-languages-that-are-analyzed
 
     steps:
-    - name: Checkout repository
-      uses: actions/checkout@v2
-
+    - name: checkout
+      uses: actions/checkout@v3
+    - name: setup
+      uses: actions/setup-go@v3
+      with:
+        go-version: 1.17
     # Initializes the CodeQL tools for scanning.
-    - name: Initialize CodeQL
-      uses: github/codeql-action/init@v1
+    - name: init
+      uses: github/codeql-action/init@v2
       with:
         languages: ${{ matrix.language }}
         # If you wish to specify custom queries, you can do so here or in a config file.
@@ -57,8 +60,8 @@ jobs:
 
     # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
     # If this step fails, then you should remove it and run the build manually (see below)
-    - name: Autobuild
-      uses: github/codeql-action/autobuild@v1
+    - name: autobuild
+      uses: github/codeql-action/autobuild@v2
 
     # ℹ️ Command-line programs to run using the OS shell.
     # 📚 https://git.io/JvXDl
@@ -71,5 +74,5 @@ jobs:
     #   make bootstrap
     #   make release
 
-    - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v1
+    - name: analyze
+      uses: github/codeql-action/analyze@v2

.github/workflows/dependabot-automerge.yml

@@ -1,66 +1,27 @@
-name: "prautomerge"
+name: "dependabot-automerge"
 
 on:
-  workflow_run:
-    workflows: ["prbuild"]
-    types:
-      - completed
+  pull_request_target:
+    types: [assigned, opened, synchronize, reopened]
 
 permissions:
-  contents: write
   pull-requests: write
+  contents: write
 
 jobs:
-  Dependabot-Automerge:
+  automerge:
     runs-on: ubuntu-latest
-    # Contains workaround to execute if dependabot updates the PR by checking for the base branch in the linked PR
-    # The the github.event.workflow_run.event value is 'push' and not 'pull_request'
-    # dont work with multiple workflows when last returns success
-    if: >-
-      github.event.workflow_run.conclusion == 'success'
-      && github.actor == 'dependabot[bot]'
-      && github.event.sender.login == 'dependabot[bot]'
-      && github.event.sender.type == 'Bot'
-      && (github.event.workflow_run.event == 'pull_request'
-          || (github.event.workflow_run.event == 'push' && github.event.workflow_run.pull_requests[0].base.ref == github.event.repository.default_branch ))
+    if: github.actor == 'dependabot[bot]'
     steps:
-      - name: Approve Changes and Merge changes if label 'dependencies' is set
-        uses: actions/github-script@v4
+      - name: metadata
+        id: metadata
+        uses: dependabot/fetch-metadata@v1.3.6
         with:
-          github-token: ${{ secrets.GITHUB_TOKEN }}
-          script: |
-            console.log(context.payload.workflow_run);
-            
-            var labelNames = await github.paginate(
-              github.issues.listLabelsOnIssue,
-              {
-                repo: context.repo.repo,
-                owner: context.repo.owner,
-                issue_number: context.payload.workflow_run.pull_requests[0].number,
-              },
-              (response) => response.data.map(
-                (label) => label.name
-              )
-            );
-
-            console.log(labelNames);
-
-            if (labelNames.includes('dependencies')) {
-              console.log('Found label');
-
-              await github.pulls.createReview({
-                repo: context.repo.repo,
-                owner: context.repo.owner,
-                pull_number: context.payload.workflow_run.pull_requests[0].number,
-                event: 'APPROVE'
-              });
-              console.log('Approved PR');
-
-              await github.pulls.merge({
-                repo: context.repo.repo,
-                owner: context.repo.owner,
-                pull_number: context.payload.workflow_run.pull_requests[0].number,
-              });
-
-              console.log('Merged PR');
-            }
+          github-token: "${{ secrets.TOKEN }}"
+      - name: merge
+        id: merge
+        if: ${{contains(steps.metadata.outputs.dependency-names, 'go.unistack.org')}}
+        run: gh pr merge --auto --merge "$PR_URL"
+        env:
+          PR_URL: ${{github.event.pull_request.html_url}}
+          GITHUB_TOKEN: ${{secrets.TOKEN}}

.github/workflows/pr.yml

@@ -3,19 +3,20 @@ on:
   pull_request:
     branches:
     - master
+    - v3
 jobs:
   test:
     name: test
     runs-on: ubuntu-latest
     steps:
     - name: setup
-      uses: actions/setup-go@v2
+      uses: actions/setup-go@v3
       with:
-        go-version: 1.16
+        go-version: 1.17
     - name: checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
     - name: cache
-      uses: actions/cache@v2
+      uses: actions/cache@v3
       with:
         path: ~/go/pkg/mod
         key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
@@ -31,9 +32,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: lint
-        uses: golangci/golangci-lint-action@v2
+        uses: golangci/golangci-lint-action@v3.4.0
         continue-on-error: true
         with:
           # Required: the version of golangci-lint is required and must be specified without patch version: we always use the latest patch version.

.gitignore

@@ -0,0 +1,24 @@
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+bin
+
+# Test binary, built with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# Dependency directories (remove the comment below to include it)
+# vendor/
+
+# Go workspace file
+go.work
+
+# General
+.DS_Store
+.idea
+.vscode

codec.go

@@ -3,7 +3,7 @@ package grpc
 import (
 	"io"
 
-	"github.com/unistack-org/micro/v3/codec"
+	"go.unistack.org/micro/v3/codec"
 	"google.golang.org/grpc/encoding"
 )
 

error.go

@@ -6,7 +6,7 @@ import (
 	"net/http"
 	"os"
 
-	"github.com/unistack-org/micro/v3/errors"
+	"go.unistack.org/micro/v3/errors"
 	"google.golang.org/grpc/codes"
 )
 

go.mod

@@ -1,11 +1,28 @@
-module github.com/unistack-org/micro-server-grpc/v3
+module go.unistack.org/micro-server-grpc/v3
+
+go 1.20
 
-go 1.16
 
 require (
-	github.com/golang/protobuf v1.5.2
-	github.com/unistack-org/micro/v3 v3.7.4
-	golang.org/x/net v0.0.0-20210510120150-4163338589ed
-	google.golang.org/grpc v1.40.0
-	google.golang.org/protobuf v1.27.1
+	github.com/golang/protobuf v1.5.4
+	github.com/quic-go/quic-go v0.41.0
+	go.unistack.org/micro/v3 v3.10.48
+	golang.org/x/net v0.22.0
+	google.golang.org/grpc v1.62.1
+	google.golang.org/protobuf v1.33.0
+)
+
+require (
+	github.com/go-task/slim-sprig v0.0.0-20230315185526-52ccab3ef572 // indirect
+	github.com/google/pprof v0.0.0-20240227163752-401108e1b7e7 // indirect
+	github.com/onsi/ginkgo/v2 v2.16.0 // indirect
+	github.com/stretchr/testify v1.8.3 // indirect
+	go.uber.org/mock v0.4.0 // indirect
+	golang.org/x/crypto v0.21.0 // indirect
+	golang.org/x/exp v0.0.0-20240222234643-814bf88cf225 // indirect
+	golang.org/x/mod v0.16.0 // indirect
+	golang.org/x/sys v0.18.0 // indirect
+	golang.org/x/text v0.14.0 // indirect
+	golang.org/x/tools v0.19.0 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20240304212257-790db918fca8 // indirect
 )

go.sum

@@ -1,135 +1,53 @@
-cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
-github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
-github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY=
-github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
-github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
-github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
-github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
-github.com/cncf/udpa/go v0.0.0-20201120205902-5459f2c99403/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=
-github.com/cncf/xds/go v0.0.0-20210312221358-fbca930ec8ed/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/ef-ds/deque v1.0.4/go.mod h1:gXDnTC3yqvBcHbq2lcExjtAcVrOnJCbMcZXmuj8Z4tg=
-github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
-github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
-github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
-github.com/envoyproxy/go-control-plane v0.9.9-0.20201210154907-fd9021fe5dad/go.mod h1:cXg6YxExXjJnVBQHBLXeUAgxn2UodCpnH306RInaBQk=
-github.com/envoyproxy/go-control-plane v0.9.9-0.20210512163311-63b5d3c536b0/go.mod h1:hliV/p42l8fGbc6Y9bQ70uLwIvmJyVE5k4iMKlh8wCQ=
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-github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
-github.com/golang-jwt/jwt/v4 v4.0.0/go.mod h1:/xlHOz8bRuivTWchD4jCa+NbatV+wEUSzwAxVc6locg=
-github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
-github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
-github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
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-github.com/golang/protobuf v1.4.0-rc.2/go.mod h1:LlEzMj4AhA7rCAGe4KMBDvJI+AwstrUpVNzEA03Pprs=
-github.com/golang/protobuf v1.4.0-rc.4.0.20200313231945-b860323f09d0/go.mod h1:WU3c8KckQ9AFe+yFwt9sWVRKCVIyN9cPHBJSNnbL67w=
-github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvqG2KuDX0=
-github.com/golang/protobuf v1.4.1/go.mod h1:U8fpvMrcmy5pZrNK1lt4xCsGvpyWQ/VVv6QDs8UjoX8=
-github.com/golang/protobuf v1.4.2/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
-github.com/golang/protobuf v1.4.3/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
-github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
-github.com/golang/protobuf v1.5.2 h1:ROPKBNFfQgOUMifHyP+KYbvpjbdoFNs+aK7DXlji0Tw=
-github.com/golang/protobuf v1.5.2/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY=
-github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
-github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
-github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
-github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
-github.com/google/go-cmp v0.5.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
-github.com/google/go-cmp v0.5.5 h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU=
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-github.com/google/uuid v1.1.2/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
-github.com/grpc-ecosystem/grpc-gateway v1.16.0/go.mod h1:BDjrQk3hbvj6Nolgz8mAMFbcEtjT1g+wF4CSlocrBnw=
-github.com/imdario/mergo v0.3.12/go.mod h1:jmQim1M+e3UYxmgPu/WyfjB3N3VflVyUjjjwH0dnCYA=
-github.com/patrickmn/go-cache v2.1.0+incompatible h1:HRMgzkcYKYpi3C8ajMPV8OFXaaRUnok+kx1WdO15EQc=
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+github.com/onsi/ginkgo/v2 v2.16.0 h1:7q1w9frJDzninhXxjZd+Y/x54XNjG/UlRLIYPZafsPM=
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+github.com/onsi/gomega v1.30.0 h1:hvMK7xYz4D3HapigLTeGdId/NcfQx1VHMJc60ew99+8=
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 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
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 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
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grpc.go

@@ -1,5 +1,5 @@
 // Package grpc provides a grpc server
-package grpc
+package grpc // import "go.unistack.org/micro-server-grpc/v3"
 
 import (
 	"context"
@@ -7,7 +7,6 @@ import (
 	"fmt"
 	"net"
 	"reflect"
-	"runtime/debug"
 	"sort"
 	"strconv"
 	"strings"
@@ -16,17 +15,18 @@ import (
 
 	// nolint: staticcheck
 	oldproto "github.com/golang/protobuf/proto"
-	"github.com/unistack-org/micro/v3/broker"
-	"github.com/unistack-org/micro/v3/codec"
-	"github.com/unistack-org/micro/v3/errors"
-	"github.com/unistack-org/micro/v3/logger"
-	metadata "github.com/unistack-org/micro/v3/metadata"
-	"github.com/unistack-org/micro/v3/register"
-	"github.com/unistack-org/micro/v3/server"
+	"go.unistack.org/micro/v3/broker"
+	"go.unistack.org/micro/v3/codec"
+	"go.unistack.org/micro/v3/errors"
+	"go.unistack.org/micro/v3/logger"
+	"go.unistack.org/micro/v3/metadata"
+	"go.unistack.org/micro/v3/register"
+	"go.unistack.org/micro/v3/semconv"
+	"go.unistack.org/micro/v3/server"
+	msync "go.unistack.org/micro/v3/sync"
 	"golang.org/x/net/netutil"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/codes"
-	"google.golang.org/grpc/credentials"
 	"google.golang.org/grpc/encoding"
 	gmetadata "google.golang.org/grpc/metadata"
 	"google.golang.org/grpc/peer"
@@ -35,35 +35,35 @@ import (
 )
 
 const (
-	defaultContentType = "application/grpc+proto"
+	DefaultContentType = "application/grpc"
 )
 
 /*
-type grpcServerReflection struct {
+type ServerReflection struct {
 	srv *grpc.Server
 	s   *serverReflectionServer
 }
 */
 
-type grpcServer struct {
+type Server struct {
 	handlers       map[string]server.Handler
 	srv            *grpc.Server
 	exit           chan chan error
-	wg          *sync.WaitGroup
+	wg             *msync.WaitGroup
 	rsvc           *register.Service
 	subscribers    map[*subscriber][]broker.Subscriber
 	rpc            *rServer
 	opts           server.Options
+	unknownHandler grpc.StreamHandler
 	sync.RWMutex
-	init       bool
 	started    bool
 	registered bool
 	reflection bool
 }
 
-func newGRPCServer(opts ...server.Option) server.Server {
+func newServer(opts ...server.Option) *Server {
 	// create a grpc server
-	g := &grpcServer{
+	g := &Server{
 		opts: server.NewOptions(opts...),
 		rpc: &rServer{
 			serviceMap: make(map[string]*service),
@@ -92,7 +92,7 @@ func (r grpcRouter) ServeRequest(ctx context.Context, req server.Request, rsp se
 
 */
 
-func (g *grpcServer) configure(opts ...server.Option) error {
+func (g *Server) configure(opts ...server.Option) error {
 	g.Lock()
 	defer g.Unlock()
 
@@ -109,9 +109,6 @@ func (g *grpcServer) configure(opts ...server.Option) error {
 	if err := g.opts.Tracer.Init(); err != nil {
 		return err
 	}
-	if err := g.opts.Auth.Init(); err != nil {
-		return err
-	}
 	if err := g.opts.Logger.Init(); err != nil {
 		return err
 	}
@@ -132,6 +129,10 @@ func (g *grpcServer) configure(opts ...server.Option) error {
 		}
 	}
 
+	for _, k := range g.opts.Codecs {
+		encoding.RegisterCodec(&wrapMicroCodec{k})
+	}
+
 	maxMsgSize := g.getMaxMsgSize()
 
 	gopts := []grpc.ServerOption{
@@ -140,12 +141,8 @@ func (g *grpcServer) configure(opts ...server.Option) error {
 		grpc.UnknownServiceHandler(g.handler),
 	}
 
-	if creds := g.getCredentials(); creds != nil {
-		gopts = append(gopts, grpc.Creds(creds))
-	}
-
 	if opts := g.getGrpcOptions(); opts != nil {
-		gopts = append(gopts, opts...)
+		gopts = append(opts, gopts...)
 	}
 
 	g.rsvc = nil
@@ -162,16 +159,18 @@ func (g *grpcServer) configure(opts ...server.Option) error {
 		g.reflection = v
 	}
 
+	if h, ok := g.opts.Context.Value(unknownServiceHandlerKey{}).(grpc.StreamHandler); ok {
+		g.unknownHandler = h
+	}
+
 	if restart {
 		return g.Start()
 	}
 
-	g.init = true
-
 	return nil
 }
 
-func (g *grpcServer) getMaxMsgSize() int {
+func (g *Server) getMaxMsgSize() int {
 	if g.opts.Context == nil {
 		return codec.DefaultMaxMsgSize
 	}
@@ -182,14 +181,7 @@ func (g *grpcServer) getMaxMsgSize() int {
 	return s
 }
 
-func (g *grpcServer) getCredentials() credentials.TransportCredentials {
-	if g.opts.TLSConfig != nil {
-		return credentials.NewTLS(g.opts.TLSConfig)
-	}
-	return nil
-}
-
-func (g *grpcServer) getGrpcOptions() []grpc.ServerOption {
+func (g *Server) getGrpcOptions() []grpc.ServerOption {
 	if g.opts.Context == nil {
 		return nil
 	}
@@ -202,42 +194,40 @@ func (g *grpcServer) getGrpcOptions() []grpc.ServerOption {
 	return opts
 }
 
-func (g *grpcServer) handler(srv interface{}, stream grpc.ServerStream) (err error) {
-	defer func() {
-		if r := recover(); r != nil {
-			g.RLock()
-			config := g.opts
-			g.RUnlock()
-			if config.Logger.V(logger.ErrorLevel) {
-				config.Logger.Error(config.Context, "panic recovered: ", r)
-				config.Logger.Error(config.Context, string(debug.Stack()))
-			}
-			err = errors.InternalServerError(g.opts.Name, "panic recovered: %v", r)
-		} else if err != nil {
-			g.RLock()
-			config := g.opts
-			g.RUnlock()
-			if config.Logger.V(logger.ErrorLevel) {
-				config.Logger.Errorf(config.Context, "grpc handler got error: %s", err)
-			}
-		}
-	}()
-
-	if g.wg != nil {
-		g.wg.Add(1)
-		defer g.wg.Done()
-	}
+func (g *Server) handler(srv interface{}, stream grpc.ServerStream) error {
+	var err error
 
 	fullMethod, ok := grpc.MethodFromServerStream(stream)
 	if !ok {
 		return status.Errorf(codes.Internal, "method does not exist in context")
 	}
 
+	ts := time.Now()
+	g.opts.Meter.Counter(semconv.ServerRequestInflight, "endpoint", fullMethod).Inc()
+	defer func() {
+		te := time.Since(ts)
+		g.opts.Meter.Summary(semconv.ServerRequestLatencyMicroseconds, "endpoint", fullMethod).Update(te.Seconds())
+		g.opts.Meter.Histogram(semconv.ServerRequestDurationSeconds, "endpoint", fullMethod).Update(te.Seconds())
+		g.opts.Meter.Counter(semconv.ServerRequestInflight, "endpoint", fullMethod).Dec()
+
+		st := status.Convert(err)
+		if st == nil || st.Code() == codes.OK {
+			g.opts.Meter.Counter(semconv.ServerRequestTotal, "endpoint", fullMethod, "status", "success", "code", strconv.Itoa(int(codes.OK))).Inc()
+		} else {
+			g.opts.Meter.Counter(semconv.ServerRequestTotal, "endpoint", fullMethod, "status", "failure", "code", strconv.Itoa(int(st.Code()))).Inc()
+		}
+	}()
+
 	serviceName, methodName, err := serviceMethod(fullMethod)
 	if err != nil {
 		return status.New(codes.InvalidArgument, err.Error()).Err()
 	}
 
+	if g.wg != nil {
+		g.wg.Add(1)
+		defer g.wg.Done()
+	}
+
 	// get grpc metadata
 	gmd, ok := gmetadata.FromIncomingContext(stream.Context())
 	if !ok {
@@ -248,15 +238,35 @@ func (g *grpcServer) handler(srv interface{}, stream grpc.ServerStream) (err err
 	for k, v := range gmd {
 		md.Set(k, strings.Join(v, ", "))
 	}
+	md.Set("Path", fullMethod)
 
+	var td string
 	// timeout for server deadline
-	to, ok := md.Get("timeout")
-	if ok {
+	if v, ok := md.Get("timeout"); ok {
 		md.Del("timeout")
+		td = v
+	}
+	if v, ok := md.Get("Grpc-Timeout"); ok {
+		md.Del("Grpc-Timeout")
+		td = v[:len(v)-1]
+		switch v[len(v)-1:] {
+		case "S":
+			td += "s"
+		case "M":
+			td += "m"
+		case "H":
+			td += "h"
+		case "m":
+			td += "ms"
+		case "u":
+			td += "us"
+		case "n":
+			td += "ns"
+		}
 	}
 
 	// get content type
-	ct := defaultContentType
+	ct := DefaultContentType
 
 	if ctype, ok := md.Get("content-type"); ok {
 		ct = ctype
@@ -270,13 +280,13 @@ func (g *grpcServer) handler(srv interface{}, stream grpc.ServerStream) (err err
 
 	// get peer from context
 	if p, ok := peer.FromContext(stream.Context()); ok {
-		md["Remote"] = p.Addr.String()
+		md.Set("Remote", p.Addr.String())
 		ctx = peer.NewContext(ctx, p)
 	}
 
 	// set the timeout if we have it
-	if len(to) > 0 {
-		if n, err := strconv.ParseUint(to, 10, 64); err == nil {
+	if len(td) > 0 {
+		if n, err := strconv.ParseUint(td, 10, 64); err == nil {
 			var cancel context.CancelFunc
 			ctx, cancel = context.WithTimeout(ctx, time.Duration(n))
 			defer cancel()
@@ -289,7 +299,7 @@ func (g *grpcServer) handler(srv interface{}, stream grpc.ServerStream) (err err
 
 	/*
 		if svc == nil && g.reflection && methodName == "ServerReflectionInfo" {
-			rfl := &grpcServerReflection{srv: g.srv, s: &serverReflectionServer{s: g.srv}}
+			rfl := &ServerReflection{srv: g.srv, s: &serverReflectionServer{s: g.srv}}
 			svc = &service{}
 			svc.typ = reflect.TypeOf(rfl)
 			svc.rcvr = reflect.ValueOf(rfl)
@@ -310,12 +320,18 @@ func (g *grpcServer) handler(srv interface{}, stream grpc.ServerStream) (err err
 	*/
 
 	if svc == nil {
+		if g.unknownHandler != nil {
+			return g.unknownHandler(srv, stream)
+		}
 		return status.New(codes.Unimplemented, fmt.Sprintf("unknown service %s", serviceName)).Err()
 	}
 
 	mtype := svc.method[methodName]
 	if mtype == nil {
-		return status.New(codes.Unimplemented, fmt.Sprintf("unknown service %s.%s", serviceName, methodName)).Err()
+		if g.unknownHandler != nil {
+			return g.unknownHandler(srv, stream)
+		}
+		return status.New(codes.Unimplemented, fmt.Sprintf("unknown service method %s.%s", serviceName, methodName)).Err()
 	}
 
 	// process unary
@@ -327,8 +343,9 @@ func (g *grpcServer) handler(srv interface{}, stream grpc.ServerStream) (err err
 	return g.processStream(ctx, stream, svc, mtype, ct)
 }
 
-func (g *grpcServer) processRequest(ctx context.Context, stream grpc.ServerStream, service *service, mtype *methodType, ct string) error {
+func (g *Server) processRequest(ctx context.Context, stream grpc.ServerStream, service *service, mtype *methodType, ct string) error {
 	// for {
+	var err error
 	var argv, replyv reflect.Value
 
 	// Decode the argument value.
@@ -341,7 +358,7 @@ func (g *grpcServer) processRequest(ctx context.Context, stream grpc.ServerStrea
 	}
 
 	// Unmarshal request
-	if err := stream.RecvMsg(argv.Interface()); err != nil {
+	if err = stream.RecvMsg(argv.Interface()); err != nil {
 		return err
 	}
 
@@ -355,26 +372,17 @@ func (g *grpcServer) processRequest(ctx context.Context, stream grpc.ServerStrea
 	function := mtype.method.Func
 	var returnValues []reflect.Value
 
-	cf, err := g.newCodec(ct)
-	if err != nil {
-		return errors.InternalServerError(g.opts.Name, err.Error())
-	}
-	b, err := cf.Marshal(argv.Interface())
-	if err != nil {
-		return err
-	}
-
 	// create a client.Request
 	r := &rpcRequest{
 		service:     g.opts.Name,
 		contentType: ct,
 		method:      fmt.Sprintf("%s.%s", service.name, mtype.method.Name),
-		body:        b,
+		endpoint:    fmt.Sprintf("%s.%s", service.name, mtype.method.Name),
 		payload:     argv.Interface(),
 	}
 	// define the handler func
 	fn := func(ctx context.Context, req server.Request, rsp interface{}) (err error) {
-		returnValues = function.Call([]reflect.Value{service.rcvr, mtype.prepareContext(ctx), reflect.ValueOf(argv.Interface()), reflect.ValueOf(rsp)})
+		returnValues = function.Call([]reflect.Value{service.rcvr, mtype.prepareContext(ctx), argv, reflect.ValueOf(rsp)})
 
 		// The return value for the method is an error.
 		if rerr := returnValues[0].Interface(); rerr != nil {
@@ -392,7 +400,13 @@ func (g *grpcServer) processRequest(ctx context.Context, stream grpc.ServerStrea
 	statusCode := codes.OK
 	statusDesc := ""
 	// execute the handler
-	if appErr := fn(ctx, r, replyv.Interface()); appErr != nil {
+	appErr := fn(ctx, r, replyv.Interface())
+	if outmd, ok := metadata.FromOutgoingContext(ctx); ok {
+		if err = stream.SendHeader(gmetadata.New(outmd)); err != nil {
+			return err
+		}
+	}
+	if appErr != nil {
 		var errStatus *status.Status
 		switch verr := appErr.(type) {
 		case *errors.Error:
@@ -407,6 +421,8 @@ func (g *grpcServer) processRequest(ctx context.Context, stream grpc.ServerStrea
 			if err != nil {
 				return err
 			}
+		case (interface{ GRPCStatus() *status.Status }):
+			errStatus = verr.GRPCStatus()
 		default:
 			g.RLock()
 			config := g.opts
@@ -428,60 +444,16 @@ func (g *grpcServer) processRequest(ctx context.Context, stream grpc.ServerStrea
 	}
 
 	return status.New(statusCode, statusDesc).Err()
-	//	}
 }
 
-/*
-type reflectStream struct {
-	stream server.Stream
-}
-
-func (s *reflectStream) Send(rsp *grpcreflect.ServerReflectionResponse) error {
-	return s.stream.Send(rsp)
-}
-
-func (s *reflectStream) Recv() (*grpcreflect.ServerReflectionRequest, error) {
-	req := &grpcreflect.ServerReflectionRequest{}
-	err := s.stream.Recv(req)
-	return req, err
-}
-
-func (s *reflectStream) SetHeader(gmetadata.MD) error {
-	return nil
-}
-
-func (s *reflectStream) SendHeader(gmetadata.MD) error {
-	return nil
-}
-
-func (s *reflectStream) SetTrailer(gmetadata.MD) {
-
-}
-
-func (s *reflectStream) Context() context.Context {
-	return s.stream.Context()
-}
-
-func (s *reflectStream) SendMsg(m interface{}) error {
-	return s.stream.Send(m)
-}
-
-func (s *reflectStream) RecvMsg(m interface{}) error {
-	return s.stream.Recv(m)
-}
-
-func (g *grpcServerReflection) ServerReflectionInfo(ctx context.Context, stream server.Stream) error {
-	return g.s.ServerReflectionInfo(&reflectStream{stream})
-}
-*/
-
-func (g *grpcServer) processStream(ctx context.Context, stream grpc.ServerStream, service *service, mtype *methodType, ct string) error {
+func (g *Server) processStream(ctx context.Context, stream grpc.ServerStream, service *service, mtype *methodType, ct string) error {
 	opts := g.opts
 
 	r := &rpcRequest{
 		service:     opts.Name,
 		contentType: ct,
 		method:      fmt.Sprintf("%s.%s", service.name, mtype.method.Name),
+		endpoint:    fmt.Sprintf("%s.%s", service.name, mtype.method.Name),
 		stream:      true,
 	}
 
@@ -510,7 +482,13 @@ func (g *grpcServer) processStream(ctx context.Context, stream grpc.ServerStream
 	statusCode := codes.OK
 	statusDesc := ""
 
-	if appErr := fn(ctx, r, ss); appErr != nil {
+	appErr := fn(ctx, r, ss)
+	if outmd, ok := metadata.FromOutgoingContext(ctx); ok {
+		if err := stream.SendHeader(gmetadata.New(outmd)); err != nil {
+			return err
+		}
+	}
+	if appErr != nil {
 		var err error
 		var errStatus *status.Status
 		switch verr := appErr.(type) {
@@ -542,7 +520,7 @@ func (g *grpcServer) processStream(ctx context.Context, stream grpc.ServerStream
 	return status.New(statusCode, statusDesc).Err()
 }
 
-func (g *grpcServer) newCodec(ct string) (codec.Codec, error) {
+func (g *Server) newCodec(ct string) (codec.Codec, error) {
 	g.RLock()
 	defer g.RUnlock()
 
@@ -557,7 +535,7 @@ func (g *grpcServer) newCodec(ct string) (codec.Codec, error) {
 	return nil, codec.ErrUnknownContentType
 }
 
-func (g *grpcServer) Options() server.Options {
+func (g *Server) Options() server.Options {
 	g.RLock()
 	opts := g.opts
 	g.RUnlock()
@@ -565,18 +543,15 @@ func (g *grpcServer) Options() server.Options {
 	return opts
 }
 
-func (g *grpcServer) Init(opts ...server.Option) error {
-	if len(opts) == 0 && g.init {
-		return nil
-	}
+func (g *Server) Init(opts ...server.Option) error {
 	return g.configure(opts...)
 }
 
-func (g *grpcServer) NewHandler(h interface{}, opts ...server.HandlerOption) server.Handler {
+func (g *Server) NewHandler(h interface{}, opts ...server.HandlerOption) server.Handler {
 	return newRPCHandler(h, opts...)
 }
 
-func (g *grpcServer) Handle(h server.Handler) error {
+func (g *Server) Handle(h server.Handler) error {
 	if err := g.rpc.register(h.Handler()); err != nil {
 		return err
 	}
@@ -585,11 +560,11 @@ func (g *grpcServer) Handle(h server.Handler) error {
 	return nil
 }
 
-func (g *grpcServer) NewSubscriber(topic string, sb interface{}, opts ...server.SubscriberOption) server.Subscriber {
+func (g *Server) NewSubscriber(topic string, sb interface{}, opts ...server.SubscriberOption) server.Subscriber {
 	return newSubscriber(topic, sb, opts...)
 }
 
-func (g *grpcServer) Subscribe(sb server.Subscriber) error {
+func (g *Server) Subscribe(sb server.Subscriber) error {
 	sub, ok := sb.(*subscriber)
 	if !ok {
 		return fmt.Errorf("invalid subscriber: expected *subscriber")
@@ -613,7 +588,7 @@ func (g *grpcServer) Subscribe(sb server.Subscriber) error {
 	return nil
 }
 
-func (g *grpcServer) Register() error {
+func (g *Server) Register() error {
 	g.RLock()
 	rsvc := g.rsvc
 	config := g.opts
@@ -687,37 +662,13 @@ func (g *grpcServer) Register() error {
 	g.Lock()
 	defer g.Unlock()
 
-	for sb := range g.subscribers {
-		handler := g.createSubHandler(sb, config)
-		var opts []broker.SubscribeOption
-		if queue := sb.Options().Queue; len(queue) > 0 {
-			opts = append(opts, broker.SubscribeGroup(queue))
-		}
-
-		subCtx := config.Context
-		if cx := sb.Options().Context; cx != nil {
-			subCtx = cx
-		}
-		opts = append(opts, broker.SubscribeContext(subCtx))
-		opts = append(opts, broker.SubscribeAutoAck(sb.Options().AutoAck))
-
-		if config.Logger.V(logger.InfoLevel) {
-			config.Logger.Infof(config.Context, "Subscribing to topic: %s", sb.Topic())
-		}
-		sub, err := config.Broker.Subscribe(subCtx, sb.Topic(), handler, opts...)
-		if err != nil {
-			return err
-		}
-		g.subscribers[sb] = []broker.Subscriber{sub}
-	}
-
 	g.registered = true
 	g.rsvc = service
 
 	return nil
 }
 
-func (g *grpcServer) Deregister() error {
+func (g *Server) Deregister() error {
 	var err error
 
 	g.RLock()
@@ -771,7 +722,7 @@ func (g *grpcServer) Deregister() error {
 	return nil
 }
 
-func (g *grpcServer) Start() error {
+func (g *Server) Start() error {
 	g.RLock()
 	if g.started {
 		g.RUnlock()
@@ -781,10 +732,6 @@ func (g *grpcServer) Start() error {
 
 	config := g.Options()
 
-	for _, k := range config.Codecs {
-		encoding.RegisterCodec(&wrapMicroCodec{k})
-	}
-
 	// micro: config.Transport.Listen(config.Address)
 	var ts net.Listener
 	var err error
@@ -848,6 +795,10 @@ func (g *grpcServer) Start() error {
 		}
 	}
 
+	if err = g.subscribe(); err != nil {
+		return err
+	}
+
 	// micro: go ts.Accept(s.accept)
 	go func() {
 		if err = g.srv.Serve(ts); err != nil {
@@ -933,7 +884,7 @@ func (g *grpcServer) Start() error {
 
 		select {
 		case <-exit:
-		case <-time.After(time.Second):
+		case <-time.After(g.opts.GracefulTimeout):
 			g.srv.Stop()
 		}
 
@@ -959,7 +910,38 @@ func (g *grpcServer) Start() error {
 	return nil
 }
 
-func (g *grpcServer) Stop() error {
+func (g *Server) subscribe() error {
+	config := g.opts
+
+	for sb := range g.subscribers {
+		handler := g.createSubHandler(sb, config)
+		var opts []broker.SubscribeOption
+		if queue := sb.Options().Queue; len(queue) > 0 {
+			opts = append(opts, broker.SubscribeGroup(queue))
+		}
+
+		subCtx := config.Context
+		if cx := sb.Options().Context; cx != nil {
+			subCtx = cx
+		}
+		opts = append(opts, broker.SubscribeContext(subCtx))
+		opts = append(opts, broker.SubscribeAutoAck(sb.Options().AutoAck))
+		opts = append(opts, broker.SubscribeBodyOnly(sb.Options().BodyOnly))
+
+		if config.Logger.V(logger.InfoLevel) {
+			config.Logger.Infof(config.Context, "Subscribing to topic: %s", sb.Topic())
+		}
+		sub, err := config.Broker.Subscribe(subCtx, sb.Topic(), handler, opts...)
+		if err != nil {
+			return err
+		}
+		g.subscribers[sb] = []broker.Subscriber{sub}
+	}
+
+	return nil
+}
+
+func (g *Server) Stop() error {
 	g.RLock()
 	if !g.started {
 		g.RUnlock()
@@ -979,14 +961,18 @@ func (g *grpcServer) Stop() error {
 	return err
 }
 
-func (g *grpcServer) String() string {
+func (g *Server) String() string {
 	return "grpc"
 }
 
-func (g *grpcServer) Name() string {
+func (g *Server) Name() string {
 	return g.opts.Name
 }
 
-func NewServer(opts ...server.Option) server.Server {
-	return newGRPCServer(opts...)
+func (g *Server) GRPCServer() *grpc.Server {
+	return g.srv
+}
+
+func NewServer(opts ...server.Option) *Server {
+	return newServer(opts...)
 }

handler.go

@@ -3,8 +3,8 @@ package grpc
 import (
 	"reflect"
 
-	"github.com/unistack-org/micro/v3/register"
-	"github.com/unistack-org/micro/v3/server"
+	"go.unistack.org/micro/v3/register"
+	"go.unistack.org/micro/v3/server"
 )
 
 type rpcHandler struct {

options.go

@@ -3,7 +3,7 @@ package grpc
 import (
 	"context"
 
-	"github.com/unistack-org/micro/v3/server"
+	"go.unistack.org/micro/v3/server"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/encoding"
 )
@@ -13,6 +13,7 @@ type (
 	grpcOptions              struct{}
 	maxMsgSizeKey            struct{}
 	reflectionKey            struct{}
+	unknownServiceHandlerKey struct{}
 )
 
 // gRPC Codec to be used to encode/decode requests for a given content type
@@ -38,7 +39,6 @@ func Options(opts ...grpc.ServerOption) server.Option {
 //
 // MaxMsgSize set the maximum message in bytes the server can receive and
 // send. Default maximum message size is 4 MB.
-//
 func MaxMsgSize(s int) server.Option {
 	return server.SetOption(maxMsgSizeKey{}, s)
 }
@@ -47,3 +47,8 @@ func MaxMsgSize(s int) server.Option {
 func Reflection(b bool) server.Option {
 	return server.SetOption(reflectionKey{}, b)
 }
+
+// UnknownServiceHandler enables support for all services
+func UnknownServiceHandler(h grpc.StreamHandler) server.Option {
+	return server.SetOption(unknownServiceHandlerKey{}, h)
+}

quic/quic_net.go

@@ -0,0 +1,166 @@
+// grpc over quic mostly based on https://github.com/sssgun/grpc-quic
+// copyright sssgun with MIT license
+package grpcquic // import "go.unistack.org/micro-server-grpc/v3/quic"
+
+import (
+	"context"
+	"crypto/tls"
+	"net"
+	"time"
+
+	quic "github.com/quic-go/quic-go"
+)
+
+///////////////////////////////////////////////////////////////////////////////
+// Connection
+
+var _ net.Conn = (*Conn)(nil)
+
+type Conn struct {
+	conn   quic.Connection
+	stream quic.Stream
+}
+
+func NewConn(conn quic.Connection) (net.Conn, error) {
+	stream, err := conn.OpenStreamSync(context.Background())
+	if err != nil {
+		return nil, err
+	}
+
+	return &Conn{conn, 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.conn.CloseWithError(0, "")
+}
+
+// LocalAddr returns the local network address.
+func (c *Conn) LocalAddr() net.Addr {
+	return c.conn.LocalAddr()
+}
+
+// RemoteAddr returns the remote network address.
+func (c *Conn) RemoteAddr() net.Addr {
+	return c.conn.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{
+	KeepAlivePeriod: 10 * time.Second,
+}
+
+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.DialAddr(ctx, target, tlsConf, QuicConfig)
+		if err != nil {
+			return nil, err
+		}
+
+		return NewConn(sess)
+	}
+}

quic/quic_transport.go

@@ -0,0 +1,117 @@
+// grpc over quic mostly based on https://github.com/sssgun/grpc-quic
+// copyright sssgun with MIT license
+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)
+}

request.go

@@ -3,9 +3,9 @@ package grpc
 import (
 	"io"
 
-	"github.com/unistack-org/micro/v3/codec"
-	"github.com/unistack-org/micro/v3/metadata"
-	"github.com/unistack-org/micro/v3/server"
+	"go.unistack.org/micro/v3/codec"
+	"go.unistack.org/micro/v3/metadata"
+	"go.unistack.org/micro/v3/server"
 )
 
 var (
@@ -22,7 +22,6 @@ type rpcRequest struct {
 	endpoint    string
 	contentType string
 	service     string
-	body        []byte
 	stream      bool
 }
 
@@ -32,7 +31,6 @@ type rpcMessage struct {
 	header      metadata.Metadata
 	topic       string
 	contentType string
-	body        []byte
 }
 
 func (r *rpcRequest) ContentType() string {
@@ -83,7 +81,7 @@ func (r *rpcMessage) Topic() string {
 	return r.topic
 }
 
-func (r *rpcMessage) Payload() interface{} {
+func (r *rpcMessage) Body() interface{} {
 	return r.payload
 }
 
@@ -91,10 +89,6 @@ func (r *rpcMessage) Header() metadata.Metadata {
 	return r.header
 }
 
-func (r *rpcMessage) Body() []byte {
-	return r.body
-}
-
 func (r *rpcMessage) Codec() codec.Codec {
 	return r.codec
 }

response.go

@@ -3,9 +3,9 @@ package grpc
 import (
 	"io"
 
-	"github.com/unistack-org/micro/v3/codec"
-	"github.com/unistack-org/micro/v3/metadata"
-	"github.com/unistack-org/micro/v3/server"
+	"go.unistack.org/micro/v3/codec"
+	"go.unistack.org/micro/v3/metadata"
+	"go.unistack.org/micro/v3/server"
 )
 
 var _ server.Response = &rpcResponse{}

server.go

@@ -14,7 +14,7 @@ import (
 	"unicode"
 	"unicode/utf8"
 
-	"github.com/unistack-org/micro/v3/server"
+	"go.unistack.org/micro/v3/server"
 )
 
 // Precompute the reflect type for error. Can't use error directly

stream.go

@@ -3,7 +3,7 @@ package grpc
 import (
 	"context"
 
-	"github.com/unistack-org/micro/v3/server"
+	"go.unistack.org/micro/v3/server"
 	"google.golang.org/grpc"
 )
 

subscriber.go

@@ -4,15 +4,12 @@ import (
 	"context"
 	"fmt"
 	"reflect"
-	"runtime/debug"
 	"strings"
 
-	"github.com/unistack-org/micro/v3/broker"
-	"github.com/unistack-org/micro/v3/errors"
-	"github.com/unistack-org/micro/v3/logger"
-	"github.com/unistack-org/micro/v3/metadata"
-	"github.com/unistack-org/micro/v3/register"
-	"github.com/unistack-org/micro/v3/server"
+	"go.unistack.org/micro/v3/broker"
+	"go.unistack.org/micro/v3/metadata"
+	"go.unistack.org/micro/v3/register"
+	"go.unistack.org/micro/v3/server"
 )
 
 type handler struct {
@@ -102,17 +99,8 @@ func newSubscriber(topic string, sub interface{}, opts ...server.SubscriberOptio
 	}
 }
 
-func (g *grpcServer) createSubHandler(sb *subscriber, opts server.Options) broker.Handler {
+func (g *Server) createSubHandler(sb *subscriber, opts server.Options) broker.Handler {
 	return func(p broker.Event) (err error) {
-		defer func() {
-			if r := recover(); r != nil {
-				if g.opts.Logger.V(logger.ErrorLevel) {
-					g.opts.Logger.Error(g.opts.Context, "panic recovered: ", r)
-					g.opts.Logger.Error(g.opts.Context, string(debug.Stack()))
-				}
-				err = errors.InternalServerError(g.opts.Name+".subscriber", "panic recovered: %v", r)
-			}
-		}()
 
 		msg := p.Message()
 		// if we don't have headers, create empty map
@@ -122,8 +110,8 @@ func (g *grpcServer) createSubHandler(sb *subscriber, opts server.Options) broke
 
 		ct := msg.Header["Content-Type"]
 		if len(ct) == 0 {
-			msg.Header["Content-Type"] = defaultContentType
-			ct = defaultContentType
+			msg.Header["Content-Type"] = DefaultContentType
+			ct = DefaultContentType
 		}
 		cf, err := g.newCodec(ct)
 		if err != nil {
@@ -171,7 +159,7 @@ func (g *grpcServer) createSubHandler(sb *subscriber, opts server.Options) broke
 					vals = append(vals, reflect.ValueOf(ctx))
 				}
 
-				vals = append(vals, reflect.ValueOf(msg.Payload()))
+				vals = append(vals, reflect.ValueOf(msg.Body()))
 
 				returnValues := handler.method.Call(vals)
 				if rerr := returnValues[0].Interface(); rerr != nil {
@@ -196,7 +184,6 @@ func (g *grpcServer) createSubHandler(sb *subscriber, opts server.Options) broke
 					contentType: ct,
 					payload:     req.Interface(),
 					header:      msg.Header,
-					body:        msg.Body,
 				})
 				results <- cerr
 			}()