changed embedded mutex to private field (#209)

* update ci

* added commit hash check to avoid unnecessary repository cloning

.github/ISSUE_TEMPLATE/bug_report.md

@@ -1,6 +1,6 @@
 ---
 name: Bug report
-about: For reporting bugs in go-micro
+about: For reporting bugs in micro
 title: "[BUG]"
 labels: ''
 assignees: ''
@@ -16,9 +16,3 @@ assignees: ''
 **How to reproduce the bug:**
 
 If possible, please include a minimal code snippet here.
-
-**Environment:**
-Go Version: please paste `go version` output here
-```
-please paste `go env` output here
-```

.github/ISSUE_TEMPLATE/feature-request---enhancement.md

@@ -1,6 +1,6 @@
 ---
 name: Feature request / Enhancement
-about: If you have a need not served by go-micro
+about: If you have a need not served by micro
 title: "[FEATURE]"
 labels: ''
 assignees: ''
@@ -14,4 +14,4 @@ A clear and concise description of what the problem is. Ex. I'm always frustrate
 A clear and concise description of what you want to happen.
 
 **Additional context**
-Add any other context or screenshots about the feature request here.
+Add any other context or screenshots about the feature request here.

.github/ISSUE_TEMPLATE/question.md

@@ -1,14 +1,8 @@
 ---
 name: Question
-about: Ask a question about go-micro
+about: Ask a question about micro
 title: ''
 labels: ''
 assignees: ''
 
----
+---
-
-Before asking, please check if your question has already been answered: 
-
-1. Check the documentation - https://micro.mu/docs/
-2. Check the examples and plugins - https://github.com/micro/examples & https://github.com/micro/go-plugins
-3. Search existing issues

.github/autoapprove.yml

@@ -0,0 +1,28 @@
+name: "autoapprove"
+
+on:
+  pull_request_target:
+    types: [assigned, opened, synchronize, reopened]
+  workflow_run:
+    workflows: ["prbuild"]
+    types:
+      - completed
+
+permissions:
+  pull-requests: write
+  contents: write
+
+jobs:
+  autoapprove:
+    runs-on: ubuntu-latest
+    steps:
+      - name: approve
+        run: [ "curl -o tea https://dl.gitea.com/tea/main/tea-main-linux-amd64",
+               "chmod +x ./tea",
+               "./tea login add --name unistack --token ${{ secrets.GITHUB_TOKEN }} --url https://git.unistack.org",
+               "./tea pr --repo ${{ github.event.repository.name }}"
+        ]
+        if: github.actor == 'vtolstov'
+        id: approve
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}

.github/dependabot.yml

@@ -1,19 +0,0 @@
-# To get started with Dependabot version updates, you'll need to specify which
-# package ecosystems to update and where the package manifests are located.
-# Please see the documentation for all configuration options:
-# https://help.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
-
-version: 2
-updates:
-
-  # Maintain dependencies for GitHub Actions
-  - package-ecosystem: "github-actions"
-    directory: "/"
-    schedule:
-      interval: "daily"
-
-  # Maintain dependencies for Golang
-  - package-ecosystem: "gomod"
-    directory: "/"
-    schedule:
-      interval: "daily"

.github/workflows/autoapprove.yml

@@ -1,20 +0,0 @@
-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

@@ -1,21 +0,0 @@
-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

@@ -1,47 +0,0 @@
-name: build
-on:
- push:
-    branches:
-    - master
-    - v3
-jobs:
-  test:
-    name: test
-    runs-on: ubuntu-latest
-    steps:
-    - name: setup
-      uses: actions/setup-go@v3
-      with:
-        go-version: 1.17
-    - name: checkout
-      uses: actions/checkout@v3
-    - name: cache
-      uses: actions/cache@v3
-      with:
-        path: ~/go/pkg/mod
-        key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
-        restore-keys: ${{ runner.os }}-go-
-    - name: deps
-      run: go get -v -t -d ./...
-    - name: test
-      env:
-        INTEGRATION_TESTS: yes
-      run: go test -mod readonly -v ./...
-  lint:
-    name: lint
-    runs-on: ubuntu-latest
-    steps:
-      - name: checkout
-        uses: actions/checkout@v3
-      - name: lint
-        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.
-          version: v1.30
-          # Optional: working directory, useful for monorepos
-          # working-directory: somedir
-          # Optional: golangci-lint command line arguments.
-          # args: --issues-exit-code=0
-          # Optional: show only new issues if it's a pull request. The default value is `false`.
-          # only-new-issues: true

.github/workflows/codeql-analysis.yml

@@ -1,78 +0,0 @@
-# For most projects, this workflow file will not need changing; you simply need
-# to commit it to your repository.
-#
-# You may wish to alter this file to override the set of languages analyzed,
-# or to provide custom queries or build logic.
-#
-# ******** NOTE ********
-# We have attempted to detect the languages in your repository. Please check
-# the `language` matrix defined below to confirm you have the correct set of
-# supported CodeQL languages.
-#
-name: "codeql"
-
-on:
-  workflow_run:
-    workflows: ["prbuild"]
-    types:
-      - completed
-  push:
-    branches: [ master, v3 ]
-  pull_request:
-    # The branches below must be a subset of the branches above
-    branches: [ master, v3 ]
-  schedule:
-    - cron: '34 1 * * 0'
-
-jobs:
-  analyze:
-    name: analyze
-    runs-on: ubuntu-latest
-    permissions:
-      actions: read
-      contents: read
-      security-events: write
-
-    strategy:
-      fail-fast: false
-      matrix:
-        language: [ 'go' ]
-        # CodeQL supports [ 'cpp', 'csharp', 'go', 'java', 'javascript', 'python' ]
-        # Learn more:
-        # 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
-      uses: actions/checkout@v3
-    - name: setup
-      uses: actions/setup-go@v3
-      with:
-        go-version: 1.17
-    # Initializes the CodeQL tools for scanning.
-    - 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.
-        # By default, queries listed here will override any specified in a config file.
-        # Prefix the list here with "+" to use these queries and those in the config file.
-        # queries: ./path/to/local/query, your-org/your-repo/queries@main
-
-    # 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@v2
-
-    # ℹ️ Command-line programs to run using the OS shell.
-    # 📚 https://git.io/JvXDl
-
-    # ✏️ If the Autobuild fails above, remove it and uncomment the following three lines
-    #    and modify them (or add more) to build your code if your project
-    #    uses a compiled language
-
-    #- run: |
-    #   make bootstrap
-    #   make release
-
-    - name: analyze
-      uses: github/codeql-action/analyze@v2

.github/workflows/dependabot-automerge.yml

@@ -1,27 +0,0 @@
-name: "dependabot-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 == 'dependabot[bot]'
-    steps:
-      - name: metadata
-        id: metadata
-        uses: dependabot/fetch-metadata@v1.3.6
-        with:
-          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/job_coverage.yml

@@ -0,0 +1,53 @@
+name: coverage
+
+on:
+  push:
+    branches: [ main, v3, v4 ]
+    paths-ignore:
+      - '.github/**'
+      - '.gitea/**'
+  pull_request:
+    branches: [ main, v3, v4 ]
+
+jobs:
+
+  build:
+    if: github.server_url != 'https://github.com'
+    runs-on: ubuntu-latest
+    steps:
+    - name: checkout code
+      uses: actions/checkout@v4
+      with:
+        filter: 'blob:none'
+
+    - name: setup go
+      uses: actions/setup-go@v5
+      with:
+        cache-dependency-path: "**/*.sum"
+        go-version: 'stable'
+
+    - name: test coverage
+      run: |
+        go test -v -cover ./... -covermode=count -coverprofile coverage.out -coverpkg ./...
+        go tool cover -func coverage.out -o coverage.out
+
+    - name: coverage badge
+      uses: tj-actions/coverage-badge-go@v2
+      with:
+        green: 80
+        filename: coverage.out
+
+    - uses: stefanzweifel/git-auto-commit-action@v4
+      name: autocommit
+      with:
+        commit_message: Apply Code Coverage Badge
+        skip_fetch: false
+        skip_checkout: false
+        file_pattern: ./README.md
+
+    - name: push
+      if: steps.auto-commit-action.outputs.changes_detected == 'true'
+      uses: ad-m/github-push-action@master
+      with:
+        github_token: ${{ github.token }}
+        branch: ${{ github.ref }}

.github/workflows/job_lint.yml

@@ -0,0 +1,29 @@
+name: lint
+
+on:
+  pull_request:
+    types: [opened, reopened, synchronize]
+    branches: [ master, v3, v4 ]
+    paths-ignore:
+      - '.github/**'
+      - '.gitea/**'
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+    - name: checkout code
+      uses: actions/checkout@v4
+      with:
+        filter: 'blob:none'
+    - name: setup go
+      uses: actions/setup-go@v5
+      with:
+        cache-dependency-path: "**/*.sum"
+        go-version: 'stable'
+    - name: setup deps
+      run: go get -v ./...
+    - name: run lint
+      uses: golangci/golangci-lint-action@v6
+      with:
+        version: 'latest'

.github/workflows/job_sync.yml

@@ -0,0 +1,94 @@
+name: sync
+
+on:
+  schedule:
+    - cron: '*/5 * * * *'
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+jobs:
+  sync:
+    if: github.server_url != 'https://github.com'
+    runs-on: ubuntu-latest
+    steps:
+    - name: init
+      run: |
+        git config --global user.email "vtolstov <vtolstov@users.noreply.github.com>"
+        git config --global user.name "github-actions[bot]"
+        echo "machine git.unistack.org login vtolstov password ${{ secrets.TOKEN_GITEA }}" >> /root/.netrc
+        echo "machine github.com login vtolstov password ${{ secrets.TOKEN_GITHUB }}" >> /root/.netrc
+
+    - name: check master
+      id: check_master
+      run: |
+        src_hash=$(git ls-remote https://github.com/${GITHUB_REPOSITORY} refs/heads/master | cut -f1)
+        dst_hash=$(git ls-remote ${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY} refs/heads/master | cut -f1)
+        echo "src_hash=$src_hash"
+        echo "dst_hash=$dst_hash"
+        if [ "$src_hash" != "$dst_hash" ]; then
+          echo "sync_needed=true" >> $GITHUB_OUTPUT
+        else
+          echo "sync_needed=false" >> $GITHUB_OUTPUT
+        fi
+
+    - name: sync master
+      if: steps.check_master.outputs.sync_needed == 'true'
+      run: |
+        git clone --filter=blob:none --filter=tree:0 --branch master --single-branch ${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY} repo
+        cd repo
+        git remote add --no-tags --fetch --track master upstream https://github.com/${GITHUB_REPOSITORY}
+        git pull --rebase upstream master
+        git push upstream master --progress
+        git push origin master --progress
+        cd ../
+        rm -rf repo
+
+    - name: check v3
+      id: check_v3
+      run: |
+        src_hash=$(git ls-remote https://github.com/${GITHUB_REPOSITORY} refs/heads/v3 | cut -f1)
+        dst_hash=$(git ls-remote ${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY} refs/heads/v3 | cut -f1)
+        echo "src_hash=$src_hash"
+        echo "dst_hash=$dst_hash"
+        if [ "$src_hash" != "$dst_hash" ]; then
+          echo "sync_needed=true" >> $GITHUB_OUTPUT
+        else
+          echo "sync_needed=false" >> $GITHUB_OUTPUT
+        fi
+
+    - name: sync v3
+      if: steps.check_v3.outputs.sync_needed == 'true'
+      run: |
+        git clone --filter=blob:none --filter=tree:0 --branch v3 --single-branch ${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY} repo
+        cd repo
+        git remote add --no-tags --fetch --track v3 upstream https://github.com/${GITHUB_REPOSITORY}
+        git pull --rebase upstream v3
+        git push upstream v3 --progress
+        git push origin v3 --progress
+        cd ../
+        rm -rf repo
+
+    - name: check v4
+      id: check_v4
+      run: |
+        src_hash=$(git ls-remote https://github.com/${GITHUB_REPOSITORY} refs/heads/v4 | cut -f1)
+        dst_hash=$(git ls-remote ${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY} refs/heads/v4 | cut -f1)
+        echo "src_hash=$src_hash"
+        echo "dst_hash=$dst_hash"
+        if [ "$src_hash" != "$dst_hash" ]; then
+          echo "sync_needed=true" >> $GITHUB_OUTPUT
+        else
+          echo "sync_needed=false" >> $GITHUB_OUTPUT
+        fi
+
+    - name: sync v4
+      if: steps.check_v4.outputs.sync_needed == 'true'
+      run: |
+        git clone --filter=blob:none --filter=tree:0 --branch v4 --single-branch ${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY} repo
+        cd repo
+        git remote add --no-tags --fetch --track v4 upstream https://github.com/${GITHUB_REPOSITORY}
+        git pull --rebase upstream v4
+        git push upstream v4 --progress
+        git push origin v4 --progress
+        cd ../
+        rm -rf repo

.github/workflows/job_test.yml

@@ -0,0 +1,31 @@
+name: test
+
+on:
+  pull_request:
+    types: [opened, reopened, synchronize]
+    branches: [ master, v3, v4 ]
+  push:
+    branches: [ master, v3, v4 ]
+    paths-ignore:
+      - '.github/**'
+      - '.gitea/**'
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+    - name: checkout code
+      uses: actions/checkout@v4
+      with:
+        filter: 'blob:none'
+    - name: setup go
+      uses: actions/setup-go@v5
+      with:
+        cache-dependency-path: "**/*.sum"
+        go-version: 'stable'
+    - name: setup deps
+      run: go get -v ./...
+    - name: run test
+      env:
+        INTEGRATION_TESTS: yes
+      run: go test -mod readonly -v ./...

.github/workflows/job_tests.yml

@@ -0,0 +1,50 @@
+name: test
+
+on:
+  pull_request:
+    types: [opened, reopened, synchronize]
+    branches: [ master, v3, v4 ]
+  push:
+    branches: [ master, v3, v4 ]
+    paths-ignore:
+      - '.github/**'
+      - '.gitea/**'
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+    - name: checkout code
+      uses: actions/checkout@v4
+      with:
+        filter: 'blob:none'
+    - name: checkout tests
+      uses: actions/checkout@v4
+      with:
+        ref: master
+        filter: 'blob:none'
+        repository: unistack-org/micro-tests
+        path: micro-tests
+    - name: setup go
+      uses: actions/setup-go@v5
+      with:
+        cache-dependency-path: "**/*.sum"
+        go-version: 'stable'
+    - name: setup go work
+      env:
+        GOWORK: ${{ github.workspace }}/go.work
+      run: |
+        go work init
+        go work use .
+        go work use micro-tests
+    - name: setup deps
+      env:
+        GOWORK: ${{ github.workspace }}/go.work
+      run: go get -v ./...
+    - name: run tests
+      env:
+        INTEGRATION_TESTS: yes
+        GOWORK: ${{ github.workspace }}/go.work
+      run: |
+        cd micro-tests
+        go test -mod readonly -v ./... || true

.github/workflows/pr.yml

@@ -1,47 +0,0 @@
-name: prbuild
-on:
-  pull_request:
-    branches:
-    - master
-    - v3
-jobs:
-  test:
-    name: test
-    runs-on: ubuntu-latest
-    steps:
-    - name: setup
-      uses: actions/setup-go@v3
-      with:
-        go-version: 1.17
-    - name: checkout
-      uses: actions/checkout@v3
-    - name: cache
-      uses: actions/cache@v3
-      with:
-        path: ~/go/pkg/mod
-        key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
-        restore-keys: ${{ runner.os }}-go-
-    - name: deps
-      run: go get -v -t -d ./...
-    - name: test
-      env:
-        INTEGRATION_TESTS: yes
-      run: go test -mod readonly -v ./...
-  lint:
-    name: lint
-    runs-on: ubuntu-latest
-    steps:
-      - name: checkout
-        uses: actions/checkout@v3
-      - name: lint
-        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.
-          version: v1.30
-          # Optional: working directory, useful for monorepos
-          # working-directory: somedir
-          # Optional: golangci-lint command line arguments.
-          # args: --issues-exit-code=0
-          # Optional: show only new issues if it's a pull request. The default value is `false`.
-          # only-new-issues: true

.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

.golangci.yml

@@ -1,44 +1,5 @@
 run:
-  concurrency: 4
+  concurrency: 8
-  deadline: 5m
+  timeout: 5m
   issues-exit-code: 1
   tests: true
-
-linters-settings:
-  govet:
-    check-shadowing: true
-    enable:
-      - fieldalignment
-
-linters:
-  enable:
-    - govet
-    - deadcode
-    - errcheck
-    - govet
-    - ineffassign
-    - staticcheck
-    - structcheck
-    - typecheck
-    - unused
-    - varcheck
-    - bodyclose
-    - gci
-    - goconst
-    - gocritic
-    - gosimple
-    - gofmt
-    - gofumpt
-    - goimports
-    - golint
-    - gosec
-    - makezero
-    - misspell
-    - nakedret
-    - nestif
-    - nilerr
-    - noctx
-    - prealloc
-    - unconvert
-    - unparam
-  disable-all: false

README.md

@@ -1,4 +1,5 @@
 # TCP Server
+![Coverage](https://img.shields.io/badge/Coverage-0.0%25-red)
 
 The TCP micro.Server implemtation. It's a partial implementation which strips out codecs, transports, etc but enables you 
 to create a TCP Server that could potentially be used for some TCP based API services.

go.mod

@@ -1,8 +1,23 @@
-module go.unistack.org/micro-server-tcp/v3
+module go.unistack.org/micro-server-tcp/v4
 
-go 1.16
+go 1.23.0
+
+toolchain go1.24.0
 
 require (
-	go.unistack.org/micro/v3 v3.10.4
+	go.unistack.org/micro/v4 v4.1.2
-	golang.org/x/net v0.0.0-20220225172249-27dd8689420f
+	golang.org/x/net v0.36.0
+)
+
+require (
+	github.com/ash3in/uuidv8 v1.2.0 // indirect
+	github.com/google/uuid v1.6.0 // indirect
+	github.com/matoous/go-nanoid v1.5.1 // indirect
+	github.com/spf13/cast v1.7.1 // indirect
+	go.unistack.org/micro-proto/v4 v4.1.0 // indirect
+	golang.org/x/sys v0.30.0 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20250303144028-a0af3efb3deb // indirect
+	google.golang.org/grpc v1.71.0 // indirect
+	google.golang.org/protobuf v1.36.5 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -1,165 +1,43 @@
-cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+github.com/DATA-DOG/go-sqlmock v1.5.2 h1:OcvFkGmslmlZibjAjaHm3L//6LiuBgolP7OputlJIzU=
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handler.go

@@ -3,8 +3,7 @@ package tcp
 import (
 	"net"
 
-	"go.unistack.org/micro/v3/register"
+	"go.unistack.org/micro/v4/server"
-	"go.unistack.org/micro/v3/server"
 )
 
 type Handler interface {
@@ -14,7 +13,6 @@ type Handler interface {
 type tcpHandler struct {
 	opts       server.HandlerOptions
 	hd         interface{}
-	eps        []*register.Endpoint
 	maxMsgSize int
 }
 
@@ -26,10 +24,6 @@ func (h *tcpHandler) Handler() interface{} {
 	return h.hd
 }
 
-func (h *tcpHandler) Endpoints() []*register.Endpoint {
-	return h.eps
-}
-
 func (h *tcpHandler) Options() server.HandlerOptions {
 	return h.opts
 }

message.go

@@ -1,38 +0,0 @@
-package tcp
-
-import (
-	"go.unistack.org/micro/v3/codec"
-	"go.unistack.org/micro/v3/metadata"
-	"go.unistack.org/micro/v3/server"
-)
-
-var _ server.Message = &tcpMessage{}
-
-type tcpMessage struct {
-	payload     interface{}
-	codec       codec.Codec
-	header      metadata.Metadata
-	topic       string
-	contentType string
-	body        []byte
-}
-
-func (r *tcpMessage) Topic() string {
-	return r.topic
-}
-
-func (r *tcpMessage) ContentType() string {
-	return r.contentType
-}
-
-func (r *tcpMessage) Header() metadata.Metadata {
-	return r.header
-}
-
-func (r *tcpMessage) Body() interface{} {
-	return r.payload
-}
-
-func (r *tcpMessage) Codec() codec.Codec {
-	return r.codec
-}

options.go

@@ -4,7 +4,7 @@ import (
 	"crypto/tls"
 	"net"
 
-	"go.unistack.org/micro/v3/server"
+	"go.unistack.org/micro/v4/server"
 )
 
 // DefaultMaxMsgSize define maximum message size that server can send
@@ -18,10 +18,8 @@ type (
 	netListener   struct{}
 )
 
-//
 // MaxMsgSize set the maximum message in bytes the server can receive and
 // send.  Default maximum message size is 8K
-//
 func MaxMsgSize(s int) server.Option {
 	return server.SetOption(maxMsgSizeKey{}, s)
 }

request.go

@@ -1,9 +1,9 @@
 package tcp
 
 import (
-	"go.unistack.org/micro/v3/codec"
+	"go.unistack.org/micro/v4/codec"
-	"go.unistack.org/micro/v3/metadata"
+	"go.unistack.org/micro/v4/metadata"
-	"go.unistack.org/micro/v3/server"
+	"go.unistack.org/micro/v4/server"
 )
 
 var _ server.Request = &tcpRequest{}
@@ -11,7 +11,7 @@ var _ server.Request = &tcpRequest{}
 type tcpRequest struct {
 	codec       codec.Codec
 	body        interface{}
-	header      map[string]string
+	header      metadata.Metadata
 	method      string
 	endpoint    string
 	contentType string

subscriber.go

@@ -1,296 +0,0 @@
-package tcp
-
-import (
-	"bytes"
-	"context"
-	"fmt"
-	"reflect"
-	"strings"
-	"unicode"
-	"unicode/utf8"
-
-	"go.unistack.org/micro/v3/broker"
-	"go.unistack.org/micro/v3/codec"
-	"go.unistack.org/micro/v3/metadata"
-	"go.unistack.org/micro/v3/register"
-	"go.unistack.org/micro/v3/server"
-)
-
-const (
-	subSig = "func(context.Context, interface{}) error"
-)
-
-var typeOfError = reflect.TypeOf((*error)(nil)).Elem()
-
-type handler struct {
-	reqType reflect.Type
-	ctxType reflect.Type
-	method  reflect.Value
-}
-
-type tcpSubscriber struct {
-	topic      string
-	rcvr       reflect.Value
-	typ        reflect.Type
-	subscriber interface{}
-	handlers   []*handler
-	endpoints  []*register.Endpoint
-	opts       server.SubscriberOptions
-}
-
-// Is this an exported - upper case - name?
-func isExported(name string) bool {
-	r, _ := utf8.DecodeRuneInString(name)
-	return unicode.IsUpper(r)
-}
-
-// Is this type exported or a builtin?
-func isExportedOrBuiltinType(t reflect.Type) bool {
-	for t.Kind() == reflect.Ptr {
-		t = t.Elem()
-	}
-	// PkgPath will be non-empty even for an exported type,
-	// so we need to check the type name as well.
-	return isExported(t.Name()) || t.PkgPath() == ""
-}
-
-func newSubscriber(topic string, sub interface{}, opts ...server.SubscriberOption) server.Subscriber {
-	options := server.SubscriberOptions{
-		AutoAck: true,
-	}
-
-	for _, o := range opts {
-		o(&options)
-	}
-
-	var endpoints []*register.Endpoint
-	var handlers []*handler
-
-	if typ := reflect.TypeOf(sub); typ.Kind() == reflect.Func {
-		h := &handler{
-			method: reflect.ValueOf(sub),
-		}
-
-		switch typ.NumIn() {
-		case 1:
-			h.reqType = typ.In(0)
-		case 2:
-			h.ctxType = typ.In(0)
-			h.reqType = typ.In(1)
-		}
-
-		handlers = append(handlers, h)
-		ep := &register.Endpoint{
-			Name:     "Func",
-			Request:  register.ExtractSubValue(typ),
-			Metadata: metadata.New(2),
-		}
-		ep.Metadata.Set("topic", topic)
-		ep.Metadata.Set("subscriber", "true")
-		endpoints = append(endpoints, ep)
-	} else {
-		hdlr := reflect.ValueOf(sub)
-		name := reflect.Indirect(hdlr).Type().Name()
-
-		for m := 0; m < typ.NumMethod(); m++ {
-			method := typ.Method(m)
-			h := &handler{
-				method: method.Func,
-			}
-
-			switch method.Type.NumIn() {
-			case 2:
-				h.reqType = method.Type.In(1)
-			case 3:
-				h.ctxType = method.Type.In(1)
-				h.reqType = method.Type.In(2)
-			}
-
-			handlers = append(handlers, h)
-			ep := &register.Endpoint{
-				Name:     name + "." + method.Name,
-				Request:  register.ExtractSubValue(method.Type),
-				Metadata: metadata.New(2),
-			}
-			ep.Metadata.Set("topic", topic)
-			ep.Metadata.Set("subscriber", "true")
-			endpoints = append(endpoints, ep)
-		}
-	}
-
-	return &tcpSubscriber{
-		rcvr:       reflect.ValueOf(sub),
-		typ:        reflect.TypeOf(sub),
-		topic:      topic,
-		subscriber: sub,
-		handlers:   handlers,
-		endpoints:  endpoints,
-		opts:       options,
-	}
-}
-
-func validateSubscriber(sub server.Subscriber) error {
-	typ := reflect.TypeOf(sub.Subscriber())
-	var argType reflect.Type
-
-	switch typ.Kind() {
-	case reflect.Func:
-		name := "Func"
-		switch typ.NumIn() {
-		case 2:
-			argType = typ.In(1)
-		default:
-			return fmt.Errorf("subscriber %v takes wrong number of args: %v required signature %s", name, typ.NumIn(), subSig)
-		}
-		if !isExportedOrBuiltinType(argType) {
-			return fmt.Errorf("subscriber %v argument type not exported: %v", name, argType)
-		}
-		if typ.NumOut() != 1 {
-			return fmt.Errorf("subscriber %v has wrong number of outs: %v require signature %s",
-				name, typ.NumOut(), subSig)
-		}
-		if returnType := typ.Out(0); returnType != typeOfError {
-			return fmt.Errorf("subscriber %v returns %v not error", name, returnType.String())
-		}
-	default:
-		hdlr := reflect.ValueOf(sub.Subscriber())
-		name := reflect.Indirect(hdlr).Type().Name()
-
-		for m := 0; m < typ.NumMethod(); m++ {
-			method := typ.Method(m)
-
-			switch method.Type.NumIn() {
-			case 3:
-				argType = method.Type.In(2)
-			default:
-				return fmt.Errorf("subscriber %v.%v takes wrong number of args: %v required signature %s",
-					name, method.Name, method.Type.NumIn(), subSig)
-			}
-
-			if !isExportedOrBuiltinType(argType) {
-				return fmt.Errorf("%v argument type not exported: %v", name, argType)
-			}
-			if method.Type.NumOut() != 1 {
-				return fmt.Errorf(
-					"subscriber %v.%v has wrong number of outs: %v require signature %s",
-					name, method.Name, method.Type.NumOut(), subSig)
-			}
-			if returnType := method.Type.Out(0); returnType != typeOfError {
-				return fmt.Errorf("subscriber %v.%v returns %v not error", name, method.Name, returnType.String())
-			}
-		}
-	}
-
-	return nil
-}
-
-func (s *tcpServer) createSubHandler(sb *tcpSubscriber, opts server.Options) broker.Handler {
-	return func(p broker.Event) error {
-		msg := p.Message()
-		ct := msg.Header["Content-Type"]
-		cf, err := s.newCodec(ct)
-		if err != nil {
-			return err
-		}
-
-		hdr := make(map[string]string, len(msg.Header)-1)
-		for k, v := range msg.Header {
-			if k == "Content-Type" {
-				continue
-			}
-			hdr[k] = v
-		}
-		ctx := metadata.NewIncomingContext(context.Background(), hdr)
-
-		results := make(chan error, len(sb.handlers))
-
-		for i := 0; i < len(sb.handlers); i++ {
-			handler := sb.handlers[i]
-
-			var isVal bool
-			var req reflect.Value
-
-			if handler.reqType.Kind() == reflect.Ptr {
-				req = reflect.New(handler.reqType.Elem())
-			} else {
-				req = reflect.New(handler.reqType)
-				isVal = true
-			}
-			if isVal {
-				req = req.Elem()
-			}
-
-			buf := bytes.NewBuffer(msg.Body)
-
-			if err := cf.ReadHeader(buf, &codec.Message{}, codec.Event); err != nil {
-				return err
-			}
-
-			if err := cf.ReadBody(buf, req.Interface()); err != nil {
-				return err
-			}
-
-			fn := func(ctx context.Context, msg server.Message) error {
-				var vals []reflect.Value
-				if sb.typ.Kind() != reflect.Func {
-					vals = append(vals, sb.rcvr)
-				}
-				if handler.ctxType != nil {
-					vals = append(vals, reflect.ValueOf(ctx))
-				}
-
-				vals = append(vals, reflect.ValueOf(msg.Body()))
-
-				returnValues := handler.method.Call(vals)
-				if err := returnValues[0].Interface(); err != nil {
-					return err.(error)
-				}
-				return nil
-			}
-
-			for i := len(opts.SubWrappers); i > 0; i-- {
-				fn = opts.SubWrappers[i-1](fn)
-			}
-
-			go func() {
-				results <- fn(ctx, &tcpMessage{
-					topic:       sb.topic,
-					contentType: ct,
-					payload:     req.Interface(),
-					header:      msg.Header,
-					codec:       cf,
-				})
-			}()
-		}
-
-		var errors []string
-
-		for i := 0; i < len(sb.handlers); i++ {
-			if err := <-results; err != nil {
-				errors = append(errors, err.Error())
-			}
-		}
-
-		if len(errors) > 0 {
-			return fmt.Errorf("subscriber error: %s", strings.Join(errors, "\n"))
-		}
-
-		return nil
-	}
-}
-
-func (s *tcpSubscriber) Topic() string {
-	return s.topic
-}
-
-func (s *tcpSubscriber) Subscriber() interface{} {
-	return s.subscriber
-}
-
-func (s *tcpSubscriber) Endpoints() []*register.Endpoint {
-	return s.endpoints
-}
-
-func (s *tcpSubscriber) Options() server.SubscriberOptions {
-	return s.opts
-}

tcp.go

@@ -1,55 +1,67 @@
 // Package tcp implements a go-micro.Server
-package tcp // import "go.unistack.org/micro-server-tcp/v3"
+package tcp
 
 import (
+	"context"
 	"crypto/tls"
 	"fmt"
 	"net"
-	"sort"
 	"sync"
+	"sync/atomic"
 	"time"
 
-	"go.unistack.org/micro/v3/broker"
+	"go.unistack.org/micro/v4/logger"
-	"go.unistack.org/micro/v3/codec"
+	"go.unistack.org/micro/v4/register"
-	"go.unistack.org/micro/v3/logger"
+	"go.unistack.org/micro/v4/server"
-	"go.unistack.org/micro/v3/register"
+	msync "go.unistack.org/micro/v4/sync"
-	"go.unistack.org/micro/v3/server"
 	"golang.org/x/net/netutil"
 )
 
-type tcpServer struct {
+var _ server.Server = (*Server)(nil)
+
+type Server struct {
 	hd          server.Handler
 	rsvc        *register.Service
 	exit        chan chan error
-	subscribers map[*tcpSubscriber][]broker.Subscriber
 	opts        server.Options
-	sync.RWMutex
+	mu          sync.RWMutex
-	registered bool
+	registered  bool
-	init       bool
+	init        bool
+	stateLive   *atomic.Uint32
+	stateReady  *atomic.Uint32
+	stateHealth *atomic.Uint32
 }
 
-func (h *tcpServer) newCodec(ct string) (codec.Codec, error) {
+func (h *Server) Live() bool {
-	if cf, ok := h.opts.Codecs[ct]; ok {
+	return h.stateLive.Load() == 1
-		return cf, nil
-	}
-	return nil, codec.ErrUnknownContentType
 }
 
-func (h *tcpServer) Options() server.Options {
+func (h *Server) Ready() bool {
-	h.RLock()
+	return h.stateReady.Load() == 1
-	defer h.RUnlock()
+}
+
+func (h *Server) Health() bool {
+	return h.stateHealth.Load() == 1
+}
+
+func (h *Server) Options() server.Options {
+	h.mu.RLock()
+	defer h.mu.RUnlock()
 	return h.opts
 }
 
-func (h *tcpServer) Init(opts ...server.Option) error {
+func (h *Server) Init(opts ...server.Option) error {
+	if h.opts.Wait == nil {
+		h.opts.Wait = msync.NewWaitGroup()
+	}
 	if len(opts) == 0 && h.init {
 		return nil
 	}
-	h.Lock()
+	h.mu.Lock()
 	for _, o := range opts {
 		o(&h.opts)
 	}
-	h.Unlock()
+	h.mu.Unlock()
 
 	if err := h.opts.Register.Init(); err != nil {
 		return err
@@ -66,33 +78,21 @@ func (h *tcpServer) Init(opts ...server.Option) error {
 	if err := h.opts.Meter.Init(); err != nil {
 		return err
 	}
-	if err := h.opts.Transport.Init(); err != nil {
-		return err
-	}
 
 	return nil
 }
 
-func (h *tcpServer) Handle(handler server.Handler) error {
+func (h *Server) Handle(handler server.Handler) error {
-	h.Lock()
+	h.mu.Lock()
 	h.hd = handler
-	h.Unlock()
+	h.mu.Unlock()
 	return nil
 }
 
-func (h *tcpServer) NewHandler(handler interface{}, opts ...server.HandlerOption) server.Handler {
+func (h *Server) NewHandler(handler interface{}, opts ...server.HandlerOption) server.Handler {
 	options := server.NewHandlerOptions(opts...)
 
-	eps := make([]*register.Endpoint, 0, len(options.Metadata))
-	for name, metadata := range options.Metadata {
-		eps = append(eps, &register.Endpoint{
-			Name:     name,
-			Metadata: metadata,
-		})
-	}
-
 	th := &tcpHandler{
-		eps:  eps,
 		hd:   handler,
 		opts: options,
 	}
@@ -104,39 +104,12 @@ func (h *tcpServer) NewHandler(handler interface{}, opts ...server.HandlerOption
 	return th
 }
 
-func (h *tcpServer) NewSubscriber(topic string, handler interface{}, opts ...server.SubscriberOption) server.Subscriber {
+func (h *Server) Register() error {
-	return newSubscriber(topic, handler, opts...)
+	h.mu.Lock()
-}
-
-func (h *tcpServer) Subscribe(sb server.Subscriber) error {
-	sub, ok := sb.(*tcpSubscriber)
-	if !ok {
-		return fmt.Errorf("invalid subscriber: expected *tcpSubscriber")
-	}
-	if len(sub.handlers) == 0 {
-		return fmt.Errorf("invalid subscriber: no handler functions")
-	}
-
-	if err := validateSubscriber(sb); err != nil {
-		return err
-	}
-
-	h.Lock()
-	defer h.Unlock()
-	_, ok = h.subscribers[sub]
-	if ok {
-		return fmt.Errorf("subscriber %v already exists", h)
-	}
-	h.subscribers[sub] = nil
-	return nil
-}
-
-func (h *tcpServer) Register() error {
-	h.Lock()
 	config := h.opts
 	rsvc := h.rsvc
-	eps := h.hd.Endpoints()
+
-	h.Unlock()
+	h.mu.Unlock()
 
 	// if service already filled, reuse it and return early
 	if rsvc != nil {
@@ -151,32 +124,13 @@ func (h *tcpServer) Register() error {
 		return err
 	}
 
-	service.Nodes[0].Metadata["protocol"] = "tcp"
+	h.mu.RLock()
-	service.Nodes[0].Metadata["transport"] = service.Nodes[0].Metadata["protocol"]
-	service.Endpoints = eps
-
-	h.Lock()
-
-	subscriberList := make([]*tcpSubscriber, 0, len(h.subscribers))
-	for e := range h.subscribers {
-		// Only advertise non internal subscribers
-		subscriberList = append(subscriberList, e)
-	}
-	sort.Slice(subscriberList, func(i, j int) bool {
-		return subscriberList[i].topic > subscriberList[j].topic
-	})
-	for _, e := range subscriberList {
-		service.Endpoints = append(service.Endpoints, e.Endpoints()...)
-	}
-	h.Unlock()
-
-	h.RLock()
 	registered := h.registered
-	h.RUnlock()
+	h.mu.RUnlock()
 
 	if !registered {
 		if config.Logger.V(logger.InfoLevel) {
-			config.Logger.Infof(config.Context, "Register [%s] Registering node: %s", config.Register.String(), service.Nodes[0].ID)
+			config.Logger.Info(config.Context, fmt.Sprintf("Register [%s] Registering node: %s", config.Register.String(), service.Nodes[0].ID))
 		}
 	}
 
@@ -190,48 +144,23 @@ func (h *tcpServer) Register() error {
 		return nil
 	}
 
-	h.Lock()
+	h.mu.Lock()
-	defer h.Unlock()
+	defer h.mu.Unlock()
 
 	if h.registered {
 		return nil
 	}
 
-	for sb := range h.subscribers {
-		handler := h.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
-		}
-		h.subscribers[sb] = []broker.Subscriber{sub}
-	}
-
 	h.registered = true
 	h.rsvc = service
 
 	return nil
 }
 
-func (h *tcpServer) Deregister() error {
+func (h *Server) Deregister() error {
-	h.Lock()
+	h.mu.Lock()
 	config := h.opts
-	h.Unlock()
+	h.mu.Unlock()
 
 	service, err := server.NewRegisterService(h)
 	if err != nil {
@@ -239,51 +168,25 @@ func (h *tcpServer) Deregister() error {
 	}
 
 	if config.Logger.V(logger.InfoLevel) {
-		config.Logger.Infof(config.Context, "Deregistering node: %s", service.Nodes[0].ID)
+		config.Logger.Info(config.Context, "Deregistering node: "+service.Nodes[0].ID)
 	}
 
 	if err := server.DefaultDeregisterFunc(service, config); err != nil {
 		return err
 	}
 
-	h.Lock()
+	h.mu.Lock()
 	if !h.registered {
-		h.Unlock()
+		h.mu.Unlock()
 		return nil
 	}
 	h.registered = false
 
-	wg := sync.WaitGroup{}
+	h.mu.Unlock()
-	subCtx := h.opts.Context
-
-	for sb, subs := range h.subscribers {
-		if cx := sb.Options().Context; cx != nil {
-			subCtx = cx
-		}
-
-		for _, sub := range subs {
-			wg.Add(1)
-			go func(s broker.Subscriber) {
-				defer wg.Done()
-				if config.Logger.V(logger.InfoLevel) {
-					config.Logger.Infof(config.Context, "Unsubscribing from topic: %s", s.Topic())
-				}
-				if err := s.Unsubscribe(subCtx); err != nil {
-					if config.Logger.V(logger.ErrorLevel) {
-						config.Logger.Errorf(config.Context, "Unsubscribing from topic: %s err: %v", s.Topic(), err)
-					}
-				}
-			}(sub)
-		}
-		h.subscribers[sb] = nil
-	}
-	wg.Wait()
-
-	h.Unlock()
 	return nil
 }
 
-func (h *tcpServer) getListener() net.Listener {
+func (h *Server) getListener() net.Listener {
 	if h.opts.Context == nil {
 		return nil
 	}
@@ -296,11 +199,11 @@ func (h *tcpServer) getListener() net.Listener {
 	return l
 }
 
-func (h *tcpServer) Start() error {
+func (h *Server) Start() error {
-	h.RLock()
+	h.mu.RLock()
 	config := h.opts
 	hd := h.hd.Handler()
-	h.RUnlock()
+	h.mu.RUnlock()
 
 	var err error
 	var ts net.Listener
@@ -330,12 +233,12 @@ func (h *tcpServer) Start() error {
 	}
 
 	if config.Logger.V(logger.ErrorLevel) {
-		config.Logger.Infof(config.Context, "Listening on %s", ts.Addr().String())
+		config.Logger.Info(config.Context, "Listening on "+ts.Addr().String())
 	}
 
-	h.Lock()
+	h.mu.Lock()
 	h.opts.Address = ts.Addr().String()
-	h.Unlock()
+	h.mu.Unlock()
 
 	if err = config.Broker.Connect(config.Context); err != nil {
 		return err
@@ -351,6 +254,9 @@ func (h *tcpServer) Start() error {
 		return fmt.Errorf("invalid handler %T", hd)
 	}
 	go h.serve(ts, handle)
+	h.stateLive.Store(1)
+	h.stateReady.Store(1)
+	h.stateHealth.Store(1)
 
 	go func() {
 		t := new(time.Ticker)
@@ -369,30 +275,30 @@ func (h *tcpServer) Start() error {
 			select {
 			// register self on interval
 			case <-t.C:
-				h.RLock()
+				h.mu.RLock()
 				registered := h.registered
-				h.RUnlock()
+				h.mu.RUnlock()
 				rerr := h.opts.RegisterCheck(h.opts.Context)
 				// nolint: nestif
 				if rerr != nil && registered {
 					if config.Logger.V(logger.ErrorLevel) {
-						config.Logger.Errorf(config.Context, "Server %s-%s register check error: %s, deregister it", config.Name, config.ID, rerr)
+						config.Logger.Error(config.Context, fmt.Sprintf("Server %s-%s deregister, check error", config.Name, config.ID), rerr)
 					}
 					// deregister self in case of error
 					if err := h.Deregister(); err != nil {
 						if config.Logger.V(logger.ErrorLevel) {
-							config.Logger.Errorf(config.Context, "Server %s-%s deregister error: %s", config.Name, config.ID, err)
+							config.Logger.Error(config.Context, fmt.Sprintf("Server %s-%s deregister error", config.Name, config.ID), err)
 						}
 					}
 				} else if rerr != nil && !registered {
 					if config.Logger.V(logger.ErrorLevel) {
-						config.Logger.Errorf(config.Context, "Server %s-%s register check error: %s", config.Name, config.ID, rerr)
+						config.Logger.Error(config.Context, fmt.Sprintf("Server %s-%s register check error", config.Name, config.ID), rerr)
 					}
 					continue
 				}
 				if err := h.Register(); err != nil {
 					if config.Logger.V(logger.ErrorLevel) {
-						config.Logger.Errorf(config.Context, "Server %s-%s register error: %s", config.Name, config.ID, err)
+						config.Logger.Error(config.Context, fmt.Sprintf("Server %s-%s register error", config.Name, config.ID), err)
 					}
 				}
 				// wait for exit
@@ -401,40 +307,53 @@ func (h *tcpServer) Start() error {
 			}
 		}
 
+		h.gracefulStop()
+
 		ch <- ts.Close()
 
+		h.stateLive.Store(0)
+		h.stateReady.Store(0)
+		h.stateHealth.Store(0)
+
 		// deregister
 		if cerr := h.Deregister(); cerr != nil {
-			config.Logger.Errorf(config.Context, "Register deregister error: %v", cerr)
+			config.Logger.Error(config.Context, "Register deregister error", cerr)
 		}
 
 		if cerr := config.Broker.Disconnect(config.Context); cerr != nil {
-			config.Logger.Errorf(config.Context, "Broker disconnect error: %v", cerr)
+			config.Logger.Error(config.Context, "Broker disconnect error", cerr)
 		}
 	}()
 
 	return nil
 }
 
-func (h *tcpServer) Stop() error {
+func (h *Server) Stop() error {
 	ch := make(chan error)
 	h.exit <- ch
 	return <-ch
 }
 
-func (h *tcpServer) String() string {
+func (h *Server) gracefulStop() {
+	ctx, cancel := context.WithTimeout(context.Background(), h.opts.GracefulTimeout)
+	defer cancel()
+
+	h.opts.Wait.WaitContext(ctx)
+}
+
+func (h *Server) String() string {
 	return "tcp"
 }
 
-func (h *tcpServer) Name() string {
+func (h *Server) Name() string {
 	return h.opts.Name
 }
 
-func (h *tcpServer) serve(ln net.Listener, hd Handler) {
+func (h *Server) serve(ln net.Listener, hd Handler) {
 	var tempDelay time.Duration // how long to sleep on accept failure
-	h.RLock()
+	h.mu.RLock()
 	config := h.opts
-	h.RUnlock()
+	h.mu.RUnlock()
 	for {
 		c, err := ln.Accept()
 		// nolint: nestif
@@ -444,7 +363,7 @@ func (h *tcpServer) serve(ln net.Listener, hd Handler) {
 				return
 			default:
 			}
-			if ne, ok := err.(net.Error); ok && ne.Temporary() {
+			if ne, ok := err.(net.Error); ok && ne.Temporary() { // nolint:staticcheck
 				if tempDelay == 0 {
 					tempDelay = 5 * time.Millisecond
 				} else {
@@ -454,29 +373,35 @@ func (h *tcpServer) serve(ln net.Listener, hd Handler) {
 					tempDelay = max
 				}
 				if config.Logger.V(logger.ErrorLevel) {
-					config.Logger.Errorf(config.Context, "tcp: Accept error: %v; retrying in %v", err, tempDelay)
+					config.Logger.Error(config.Context, fmt.Sprintf("tcp: Accept error: %v; retrying in %v", err, tempDelay))
 				}
 				time.Sleep(tempDelay)
 				continue
 			}
 			if config.Logger.V(logger.ErrorLevel) {
-				config.Logger.Errorf(config.Context, "tcp: Accept error: %v", err)
+				config.Logger.Error(config.Context, "tcp: Accept error", err)
 			}
 			return
 		}
 
-		if err != nil {
+		if h.opts.Wait != nil {
-			config.Logger.Errorf(config.Context, "tcp: accept err: %v", err)
+			h.opts.Wait.Add(1)
-			return
 		}
-		go hd.Serve(c)
+		go func() {
+			hd.Serve(c)
+			if h.opts.Wait != nil {
+				h.opts.Wait.Done()
+			}
+		}()
 	}
 }
 
 func NewServer(opts ...server.Option) server.Server {
-	return &tcpServer{
+	return &Server{
+		stateLive:   &atomic.Uint32{},
+		stateReady:  &atomic.Uint32{},
+		stateHealth: &atomic.Uint32{},
 		opts:        server.NewOptions(opts...),
 		exit:        make(chan chan error),
-		subscribers: make(map[*tcpSubscriber][]broker.Subscriber),
 	}
 }