19 changed files with 348 additions and 735 deletions
--- a/.github/dependabot.yml
+++ b/.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"
--- a/.github/renovate.json
+++ b/.github/renovate.json
@ -0,0 +1,20 @@
+{
+  "extends": [
+    "config:base"
+  ],
+  "postUpdateOptions": ["gomodTidy"],
+  "packageRules": [
+    {
+      "matchUpdateTypes": ["minor", "patch", "pin", "digest"],
+      "automerge": true
+    },
+    {
+      "groupName": "all deps",
+      "separateMajorMinor": true,
+      "groupSlug": "all",
+      "packagePatterns": [
+        "*"
+      ]
+    }
+  ]
+}
--- a/.github/workflows/autoapprove.yml
+++ b/.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: ${{ secrets.GITHUB_TOKEN }}
--- a/.github/workflows/automerge.yml
+++ b/.github/workflows/automerge.yml
@ -1,21 +0,0 @@
-name: "automerge"
-
-on:
-  pull_request_target:
-    types: [assigned, opened, synchronize, reopened]
-
-permissions:
-  pull-requests: write
-  contents: write
-
-jobs:
-  automerge:
-    runs-on: ubuntu-latest
-    if: github.actor == 'vtolstov'
-    steps:
-      - name: merge
-        id: merge
-        run: gh pr merge --auto --merge "$PR_URL"
-        env:
-          PR_URL: ${{github.event.pull_request.html_url}}
-          GITHUB_TOKEN: ${{secrets.TOKEN}}
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@ -3,20 +3,19 @@ on:
 push:
    branches:
    - master
-    - v3
 jobs:
  test:
    name: test
    runs-on: ubuntu-latest
    steps:
    - name: setup
-      uses: actions/setup-go@v3
+      uses: actions/setup-go@v2
      with:
-        go-version: 1.17
+        go-version: 1.16
    - name: checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v2
    - name: cache
-      uses: actions/cache@v3
+      uses: actions/cache@v2
      with:
        path: ~/go/pkg/mod
        key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
@ -32,13 +31,12 @@ jobs:
    runs-on: ubuntu-latest
    steps:
      - name: checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v2
      - name: lint
-        uses: golangci/golangci-lint-action@v3.4.0
-        continue-on-error: true
+        uses: golangci/golangci-lint-action@v2
        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
+          version: v1.39
          # Optional: working directory, useful for monorepos
          # working-directory: somedir
          # Optional: golangci-lint command line arguments.
--- a/.github/workflows/codeql-analysis.yml
+++ b/.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: ${{ matrix.language }}
-        # If you wish to specify custom queries, you can do so here or in a config file.
-        # By default, queries listed here will override any specified in a config file.
-        # Prefix the list here with "+" to use these queries and those in the config file.
-        # queries: ./path/to/local/query, your-org/your-repo/queries@main
-
-    # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
-    # If this step fails, then you should remove it and run the build manually (see below)
-    - name: autobuild
-      uses: github/codeql-action/autobuild@v2
-
-    # ℹ️ Command-line programs to run using the OS shell.
-    # 📚 https://git.io/JvXDl
-
-    # ✏️ If the Autobuild fails above, remove it and uncomment the following three lines
-    #    and modify them (or add more) to build your code if your project
-    #    uses a compiled language
-
-    #- run: |
-    #   make bootstrap
-    #   make release
-
-    - name: analyze
-      uses: github/codeql-action/analyze@v2
--- a/.github/workflows/dependabot-automerge.yml
+++ b/.github/workflows/dependabot-automerge.yml
@ -1,27 +0,0 @@
-name: "dependabot-automerge"
-
-on:
-  pull_request_target:
-    types: [assigned, opened, synchronize, reopened]
-
-permissions:
-  pull-requests: write
-  contents: write
-
-jobs:
-  automerge:
-    runs-on: ubuntu-latest
-    if: github.actor == 'dependabot[bot]'
-    steps:
-      - name: metadata
-        id: metadata
-        uses: dependabot/fetch-metadata@v1.3.6
-        with:
-          github-token: "${{ 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}}
--- a/.github/workflows/pr.yml
+++ b/.github/workflows/pr.yml
@ -3,20 +3,19 @@ on:
  pull_request:
    branches:
    - master
-    - v3
 jobs:
  test:
    name: test
    runs-on: ubuntu-latest
    steps:
    - name: setup
-      uses: actions/setup-go@v3
+      uses: actions/setup-go@v2
      with:
-        go-version: 1.17
+        go-version: 1.16
    - name: checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v2
    - name: cache
-      uses: actions/cache@v3
+      uses: actions/cache@v2
      with:
        path: ~/go/pkg/mod
        key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
@ -32,13 +31,12 @@ jobs:
    runs-on: ubuntu-latest
    steps:
      - name: checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v2
      - name: lint
-        uses: golangci/golangci-lint-action@v3.4.0
-        continue-on-error: true
+        uses: golangci/golangci-lint-action@v2
        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
+          version: v1.39
          # Optional: working directory, useful for monorepos
          # working-directory: somedir
          # Optional: golangci-lint command line arguments.
--- a/README.md
+++ b/README.md
@ -5,14 +5,14 @@ This plugin is a http client for micro.
 ## Overview

 The http client wraps `net/http` to provide a robust micro client with service discovery, load balancing and streaming. 
-It complies with the [micro.Client](https://godoc.org/go.unistack.org/micro-client-http/v4#Client) interface.
+It complies with the [micro.Client](https://godoc.org/github.com/unistack-org/micro-client-http#Client) interface.

 ## Usage

 ### Use directly

 ```go
-import "go.unistack.org/micro-client-http/v4"
+import "github.com/unistack-org/micro-client-http"

 service := micro.NewService(
 	micro.Name("my.service"),
--- a/go.mod
+++ b/go.mod
@ -1,5 +1,5 @@
-module go.unistack.org/micro-client-http/v4
+module github.com/unistack-org/micro-client-http/v3

-go 1.19
+go 1.16

-require go.unistack.org/micro/v4 v4.0.18
+require github.com/unistack-org/micro/v3 v3.4.8
--- a/go.sum
+++ b/go.sum
@ -1,6 +1,17 @@
-go.unistack.org/micro/v4 v4.0.1 h1:xo1IxbVfgh8i0eY0VeYa3cbb13u5n/Mxnp3FOgWD4Jo=
-go.unistack.org/micro/v4 v4.0.1/go.mod h1:p/J5UcSJjfHsWGT31uKoghQ5rUQZzQJBAFy+Z4+ZVMs=
-go.unistack.org/micro/v4 v4.0.6 h1:YFWvTh3VwyOd6NHYTQcf47n2TF5+p/EhpnbuBQX3qhk=
-go.unistack.org/micro/v4 v4.0.6/go.mod h1:bVEYTlPi0EsdgZZt311bIroDg9ict7ky3C87dSCCAGk=
-go.unistack.org/micro/v4 v4.0.18 h1:b7WFwem8Nz1xBrRg5FeLnm9CE5gJseHyf9j0BhkiXW0=
-go.unistack.org/micro/v4 v4.0.18/go.mod h1:5+da5r835gP0WnNZbYUJDCvWpJ9Xc3IEGyp62e8o8R4=
+github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
+github.com/ef-ds/deque v1.0.4/go.mod h1:gXDnTC3yqvBcHbq2lcExjtAcVrOnJCbMcZXmuj8Z4tg=
+github.com/google/uuid v1.2.0 h1:qJYtXnJRWmpe7m/3XlyhrsLrEURqHRM2kxzoxXqyUDs=
+github.com/google/uuid v1.2.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/imdario/mergo v0.3.12/go.mod h1:jmQim1M+e3UYxmgPu/WyfjB3N3VflVyUjjjwH0dnCYA=
+github.com/patrickmn/go-cache v2.1.0+incompatible/go.mod h1:3Qf8kWWT7OJRJbdiICTKqZju1ZixQ/KpMGzzAfe6+WQ=
+github.com/silas/dag v0.0.0-20210121180416-41cf55125c34/go.mod h1:7RTUFBdIRC9nZ7/3RyRNH1bdqIShrDejd1YbLwgPS+I=
+github.com/unistack-org/micro/v3 v3.4.8 h1:9+qGlNHgChC3aMuFrtTFUtG55PEAjneSvplg7phwoCI=
+github.com/unistack-org/micro/v3 v3.4.8/go.mod h1:LXmPfbJnJNvL0kQs8HfnkV3Wya2Wb+C7keVq++RCZnk=
+golang.org/x/net v0.0.0-20210510120150-4163338589ed/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
+golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
+golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
--- a/http.go
+++ b/http.go
@ -1,5 +1,5 @@
 // Package http provides a http client
-package http // import "go.unistack.org/micro-client-http/v4"
+package http

 import (
 	"bufio"
@ -10,18 +10,16 @@ import (
 	"net"
 	"net/http"
 	"net/url"
+	"os"
 	"strings"
 	"sync"
 	"time"

-	"go.unistack.org/micro/v4/client"
-	"go.unistack.org/micro/v4/codec"
-	"go.unistack.org/micro/v4/errors"
-	"go.unistack.org/micro/v4/logger"
-	"go.unistack.org/micro/v4/metadata"
-	"go.unistack.org/micro/v4/options"
-	"go.unistack.org/micro/v4/selector"
-	rutil "go.unistack.org/micro/v4/util/reflect"
+	"github.com/unistack-org/micro/v3/broker"
+	"github.com/unistack-org/micro/v3/client"
+	"github.com/unistack-org/micro/v3/codec"
+	"github.com/unistack-org/micro/v3/errors"
+	"github.com/unistack-org/micro/v3/metadata"
 )

 var DefaultContentType = "application/json"
@ -40,9 +38,8 @@ type httpClient struct {
 	init bool
 }

-func newRequest(ctx context.Context, log logger.Logger, addr string, req client.Request, ct string, cf codec.Codec, msg interface{}, opts client.CallOptions) (*http.Request, error) {
+func newRequest(ctx context.Context, addr string, req client.Request, ct string, cf codec.Codec, msg interface{}, opts client.CallOptions) (*http.Request, error) {
 	var tags []string
-	var parameters map[string]map[string]string
 	scheme := "http"
 	method := http.MethodPost
 	body := "*" // as like google api http annotation
@ -58,7 +55,6 @@ func newRequest(ctx context.Context, log logger.Logger, addr string, req client.
 		u = &url.URL{Scheme: scheme, Path: path, Host: host}
 	}

-	// nolint: nestif
 	if opts.Context != nil {
 		if m, ok := opts.Context.Value(methodKey{}).(string); ok {
 			method = m
@ -72,32 +68,6 @@ func newRequest(ctx context.Context, log logger.Logger, addr string, req client.
 		if t, ok := opts.Context.Value(structTagsKey{}).([]string); ok && len(t) > 0 {
 			tags = t
 		}
-		if k, ok := opts.Context.Value(headerKey{}).([]string); ok && len(k) > 0 {
-			if parameters == nil {
-				parameters = make(map[string]map[string]string)
-			}
-			m, ok := parameters["header"]
-			if !ok {
-				m = make(map[string]string)
-				parameters["header"] = m
-			}
-			for idx := 0; idx < len(k)/2; idx += 2 {
-				m[k[idx]] = k[idx+1]
-			}
-		}
-		if k, ok := opts.Context.Value(cookieKey{}).([]string); ok && len(k) > 0 {
-			if parameters == nil {
-				parameters = make(map[string]map[string]string)
-			}
-			m, ok := parameters["cookie"]
-			if !ok {
-				m = make(map[string]string)
-				parameters["cookie"] = m
-			}
-			for idx := 0; idx < len(k)/2; idx += 2 {
-				m[k[idx]] = k[idx+1]
-			}
-		}
 	}

 	if len(tags) == 0 {
@ -115,110 +85,67 @@ func newRequest(ctx context.Context, log logger.Logger, addr string, req client.

 	u, err = u.Parse(path)
 	if err != nil {
-		return nil, errors.BadRequest("go.micro.client", err.Error())
-	}
-
-	var nmsg interface{}
-	if len(u.Query()) > 0 {
-		path, nmsg, err = newPathRequest(u.Path+"?"+u.RawQuery, method, body, msg, tags, parameters)
-	} else {
-		path, nmsg, err = newPathRequest(u.Path, method, body, msg, tags, parameters)
+		return nil, errors.BadRequest("go.micro.client_v", err.Error())
 	}

+	path, nmsg, err := newPathRequest(u.Path, method, body, msg, tags)
 	if err != nil {
-		return nil, errors.BadRequest("go.micro.client", err.Error())
+		return nil, errors.BadRequest("go.micro.client_a", err.Error())
 	}

 	u, err = url.Parse(fmt.Sprintf("%s://%s%s", scheme, host, path))
 	if err != nil {
-		return nil, errors.BadRequest("go.micro.client", err.Error())
-	}
-
-	var cookies []*http.Cookie
-	header := make(http.Header)
-	if opts.Context != nil {
-		if md, ok := opts.Context.Value(metadataKey{}).(metadata.Metadata); ok {
-			for k, v := range md {
-				header[k] = v
-			}
-		}
-	}
-	if opts.AuthToken != "" {
-		header.Set(metadata.HeaderAuthorization, opts.AuthToken)
-	}
-	if opts.RequestMetadata != nil {
-		for k, v := range opts.RequestMetadata {
-			header[k] = v
-		}
-	}
-
-	if md, ok := metadata.FromOutgoingContext(ctx); ok {
-		for k, v := range md {
-			header[k] = v
-		}
-	}
-
-	// set timeout in nanoseconds
-	if opts.StreamTimeout > time.Duration(0) {
-		header.Set(metadata.HeaderTimeout, fmt.Sprintf("%d", opts.StreamTimeout))
-	}
-	if opts.RequestTimeout > time.Duration(0) {
-		header.Set(metadata.HeaderTimeout, fmt.Sprintf("%d", opts.RequestTimeout))
-	}
-
-	// set the content type for the request
-	header.Set(metadata.HeaderContentType, ct)
-	var v interface{}
-
-	for km, vm := range parameters {
-		for k, required := range vm {
-			v, err = rutil.StructFieldByPath(msg, k)
-			if err != nil {
-				return nil, errors.BadRequest("go.micro.client", err.Error())
-			}
-			if rutil.IsZero(v) {
-				if required == "true" {
-					return nil, errors.BadRequest("go.micro.client", fmt.Sprintf("required field %s not set", k))
-				}
-				continue
-			}
-
-			switch km {
-			case "header":
-				header.Set(k, fmt.Sprintf("%v", v))
-			case "cookie":
-				cookies = append(cookies, &http.Cookie{Name: k, Value: fmt.Sprintf("%v", v)})
-			}
-		}
+		return nil, errors.BadRequest("go.micro.client_t", err.Error())
 	}

 	b, err := cf.Marshal(nmsg)
 	if err != nil {
-		return nil, errors.BadRequest("go.micro.client", err.Error())
+		return nil, errors.BadRequest("go.micro.client_e", err.Error())
 	}

 	var hreq *http.Request
 	if len(b) > 0 {
 		hreq, err = http.NewRequestWithContext(ctx, method, u.String(), ioutil.NopCloser(bytes.NewBuffer(b)))
 		hreq.ContentLength = int64(len(b))
-		header.Set("Content-Length", fmt.Sprintf("%d", hreq.ContentLength))
 	} else {
 		hreq, err = http.NewRequestWithContext(ctx, method, u.String(), nil)
 	}

 	if err != nil {
-		return nil, errors.BadRequest("go.micro.client", err.Error())
+		return nil, errors.BadRequest("go.micro.client_k", err.Error())
 	}

-	hreq.Header = header
-	for _, cookie := range cookies {
-		hreq.AddCookie(cookie)
+	header := make(http.Header)
+
+	if opts.Context != nil {
+		if md, ok := opts.Context.Value(metadataKey{}).(metadata.Metadata); ok {
+			for k, v := range md {
+				header.Set(k, v)
+			}
+		}
 	}

-	if log.V(logger.DebugLevel) {
-		log.Debug(ctx, fmt.Sprintf("request %s to %s with headers %v body %s", method, u.String(), hreq.Header, b))
+	if opts.AuthToken != "" {
+		hreq.Header.Set("Authorization", opts.AuthToken)
 	}

+	if md, ok := metadata.FromOutgoingContext(ctx); ok {
+		for k, v := range md {
+			hreq.Header.Set(k, v)
+		}
+	}
+
+	// set timeout in nanoseconds
+	if opts.StreamTimeout > time.Duration(0) {
+		hreq.Header.Set("Timeout", fmt.Sprintf("%d", opts.StreamTimeout))
+	}
+	if opts.RequestTimeout > time.Duration(0) {
+		hreq.Header.Set("Timeout", fmt.Sprintf("%d", opts.RequestTimeout))
+	}
+
+	// set the content type for the request
+	hreq.Header.Set("Content-Type", ct)
+
 	return hreq, nil
 }

@ -230,9 +157,9 @@ func (h *httpClient) call(ctx context.Context, addr string, req client.Request,

 	cf, err := h.newCodec(ct)
 	if err != nil {
-		return errors.BadRequest("go.micro.client", err.Error())
+		return errors.InternalServerError("go.micro.client", err.Error())
 	}
-	hreq, err := newRequest(ctx, h.opts.Logger, addr, req, ct, cf, req.Body(), opts)
+	hreq, err := newRequest(ctx, addr, req, ct, cf, req.Body(), opts)
 	if err != nil {
 		return err
 	}
@ -267,7 +194,7 @@ func (h *httpClient) stream(ctx context.Context, addr string, req client.Request
 	// get codec
 	cf, err := h.newCodec(ct)
 	if err != nil {
-		return nil, errors.BadRequest("go.micro.client", err.Error())
+		return nil, errors.InternalServerError("go.micro.client", err.Error())
 	}

 	cc, err := (h.httpcli.Transport).(*http.Transport).DialContext(ctx, "tcp", addr)
@ -277,7 +204,6 @@ func (h *httpClient) stream(ctx context.Context, addr string, req client.Request

 	return &httpStream{
 		address: addr,
-		logger:  h.opts.Logger,
 		context: ctx,
 		closed:  make(chan bool),
 		opts:    opts,
@ -304,7 +230,7 @@ func (h *httpClient) newCodec(ct string) (codec.Codec, error) {
 	return nil, codec.ErrUnknownContentType
 }

-func (h *httpClient) Init(opts ...options.Option) error {
+func (h *httpClient) Init(opts ...client.Option) error {
 	if len(opts) == 0 && h.init {
 		return nil
 	}
@ -312,6 +238,9 @@ func (h *httpClient) Init(opts ...options.Option) error {
 		o(&h.opts)
 	}

+	if err := h.opts.Broker.Init(); err != nil {
+		return err
+	}
 	if err := h.opts.Tracer.Init(); err != nil {
 		return err
 	}
@ -324,6 +253,9 @@ func (h *httpClient) Init(opts ...options.Option) error {
 	if err := h.opts.Meter.Init(); err != nil {
 		return err
 	}
+	if err := h.opts.Transport.Init(); err != nil {
+		return err
+	}

 	return nil
 }
@ -332,11 +264,15 @@ func (h *httpClient) Options() client.Options {
 	return h.opts
 }

-func (h *httpClient) NewRequest(service, method string, req interface{}, opts ...options.Option) client.Request {
+func (h *httpClient) NewMessage(topic string, msg interface{}, opts ...client.MessageOption) client.Message {
+	return newHTTPMessage(topic, msg, h.opts.ContentType, opts...)
+}
+
+func (h *httpClient) NewRequest(service, method string, req interface{}, opts ...client.RequestOption) client.Request {
 	return newHTTPRequest(service, method, req, h.opts.ContentType, opts...)
 }

-func (h *httpClient) Call(ctx context.Context, req client.Request, rsp interface{}, opts ...options.Option) error {
+func (h *httpClient) Call(ctx context.Context, req client.Request, rsp interface{}, opts ...client.CallOption) error {
 	// make a copy of call opts
 	callOpts := h.opts.CallOptions
 	for _, opt := range opts {
@ -353,9 +289,8 @@ func (h *httpClient) Call(ctx context.Context, req client.Request, rsp interface
 	} else {
 		// got a deadline so no need to setup context
 		// but we need to set the timeout we pass along
-		if err := options.Set(&callOpts, time.Until(d), ".RequestTimeout"); err != nil {
-			return errors.New("go.micro.client", fmt.Sprintf("%v", err.Error()), 400)
-		}
+		opt := client.WithRequestTimeout(time.Until(d))
+		opt(&callOpts)
 	}

 	// should we noop right here?
@ -369,9 +304,9 @@ func (h *httpClient) Call(ctx context.Context, req client.Request, rsp interface
 	hcall := h.call

 	// wrap the call in reverse
-	//for i := len(callOpts.CallWrappers); i > 0; i-- {
-	//	hcall = callOpts.CallWrappers[i-1](hcall)
-	//}
+	for i := len(callOpts.CallWrappers); i > 0; i-- {
+		hcall = callOpts.CallWrappers[i-1](hcall)
+	}

 	// use the router passed as a call option, or fallback to the rpc clients router
 	if callOpts.Router == nil {
@ -388,7 +323,18 @@ func (h *httpClient) Call(ctx context.Context, req client.Request, rsp interface
 		callOpts.Address = []string{h.opts.Proxy}
 	}

-	var next selector.Next
+	// lookup the route to send the reques to
+	// TODO apply any filtering here
+	routes, err := h.opts.Lookup(ctx, req, callOpts)
+	if err != nil {
+		return errors.InternalServerError("go.micro.client", err.Error())
+	}
+
+	// balance the list of nodes
+	next, err := callOpts.Selector.Select(routes)
+	if err != nil {
+		return err
+	}

 	// return errors.New("go.micro.client", "request timeout", 408)
 	call := func(i int) error {
@ -403,22 +349,6 @@ func (h *httpClient) Call(ctx context.Context, req client.Request, rsp interface
 			time.Sleep(t)
 		}

-		if next == nil {
-			var routes []string
-			// lookup the route to send the reques to
-			// TODO apply any filtering here
-			routes, err = h.opts.Lookup(ctx, req, callOpts)
-			if err != nil {
-				return errors.InternalServerError("go.micro.client", err.Error())
-			}
-
-			// balance the list of nodes
-			next, err = callOpts.Selector.Select(routes)
-			if err != nil {
-				return err
-			}
-		}
-
 		node := next()

 		// make the call
@ -469,9 +399,7 @@ func (h *httpClient) Call(ctx context.Context, req client.Request, rsp interface
 	return gerr
 }

-func (h *httpClient) Stream(ctx context.Context, req client.Request, opts ...options.Option) (client.Stream, error) {
-	var err error
-
+func (h *httpClient) Stream(ctx context.Context, req client.Request, opts ...client.CallOption) (client.Stream, error) {
 	// make a copy of call opts
 	callOpts := h.opts.CallOptions
 	for _, o := range opts {
@ -488,9 +416,8 @@ func (h *httpClient) Stream(ctx context.Context, req client.Request, opts ...opt
 	} else {
 		// got a deadline so no need to setup context
 		// but we need to set the timeout we pass along
-		if err = options.Set(&callOpts, time.Until(d), ".StreamTimeout"); err != nil {
-			return nil, errors.New("go.micro.client", fmt.Sprintf("%v", err.Error()), 400)
-		}
+		o := client.WithStreamTimeout(time.Until(d))
+		o(&callOpts)
 	}

 	// should we noop right here?
@ -524,7 +451,18 @@ func (h *httpClient) Stream(ctx context.Context, req client.Request, opts ...opt
 		callOpts.Address = []string{h.opts.Proxy}
 	}

-	var next selector.Next
+	// lookup the route to send the reques to
+	// TODO apply any filtering here
+	routes, err := h.opts.Lookup(ctx, req, callOpts)
+	if err != nil {
+		return nil, errors.InternalServerError("go.micro.client", err.Error())
+	}
+
+	// balance the list of nodes
+	next, err := callOpts.Selector.Select(routes)
+	if err != nil {
+		return nil, err
+	}

 	call := func(i int) (client.Stream, error) {
 		// call backoff first. Someone may want an initial start delay
@ -538,22 +476,6 @@ func (h *httpClient) Stream(ctx context.Context, req client.Request, opts ...opt
 			time.Sleep(t)
 		}

-		if next == nil {
-			var routes []string
-			// lookup the route to send the reques to
-			// TODO apply any filtering here
-			routes, err = h.opts.Lookup(ctx, req, callOpts)
-			if err != nil {
-				return nil, errors.InternalServerError("go.micro.client", err.Error())
-			}
-
-			// balance the list of nodes
-			next, err = callOpts.Selector.Select(routes)
-			if err != nil {
-				return nil, err
-			}
-		}
-
 		node := next()

 		stream, cerr := h.stream(ctx, node, req, callOpts)
@ -610,6 +532,55 @@ func (h *httpClient) Stream(ctx context.Context, req client.Request, opts ...opt
 	return nil, grr
 }

+func (h *httpClient) Publish(ctx context.Context, p client.Message, opts ...client.PublishOption) error {
+	options := client.NewPublishOptions(opts...)
+
+	md, ok := metadata.FromOutgoingContext(ctx)
+	if !ok {
+		md = metadata.New(2)
+	}
+	md["Content-Type"] = p.ContentType()
+	md["Micro-Topic"] = p.Topic()
+
+	cf, err := h.newCodec(p.ContentType())
+	if err != nil {
+		return errors.InternalServerError("go.micro.client", err.Error())
+	}
+
+	var body []byte
+
+	// passed in raw data
+	if d, ok := p.Payload().(*codec.Frame); ok {
+		body = d.Data
+	} else {
+		b := bytes.NewBuffer(nil)
+		if err := cf.Write(b, &codec.Message{Type: codec.Event}, p.Payload()); err != nil {
+			return errors.InternalServerError("go.micro.client", err.Error())
+		}
+		body = b.Bytes()
+	}
+
+	topic := p.Topic()
+
+	// get proxy
+	if prx := os.Getenv("MICRO_PROXY"); len(prx) > 0 {
+		options.Exchange = prx
+	}
+
+	// get the exchange
+	if len(options.Exchange) > 0 {
+		topic = options.Exchange
+	}
+
+	return h.opts.Broker.Publish(ctx, topic, &broker.Message{
+		Header: md,
+		Body:   body,
+	},
+		broker.PublishContext(ctx),
+		broker.PublishBodyOnly(options.BodyOnly),
+	)
+}
+
 func (h *httpClient) String() string {
 	return "http"
 }
@ -618,7 +589,7 @@ func (h *httpClient) Name() string {
 	return h.opts.Name
 }

-func NewClient(opts ...options.Option) client.Client {
+func NewClient(opts ...client.Option) client.Client {
 	options := client.NewOptions(opts...)

 	if len(options.ContentType) == 0 {
@ -629,21 +600,11 @@ func NewClient(opts ...options.Option) client.Client {
 		opts: options,
 	}

-	var dialer func(context.Context, string) (net.Conn, error)
-	if v, ok := options.Context.Value(httpDialerKey{}).(*net.Dialer); ok {
-		dialer = func(ctx context.Context, addr string) (net.Conn, error) {
-			return v.DialContext(ctx, "tcp", addr)
-		}
-	}
-	if options.ContextDialer != nil {
-		dialer = options.ContextDialer
-	}
-	if dialer == nil {
-		dialer = func(ctx context.Context, addr string) (net.Conn, error) {
-			return (&net.Dialer{
-				Timeout:   30 * time.Second,
-				KeepAlive: 30 * time.Second,
-			}).DialContext(ctx, "tcp", addr)
+	dialer, ok := options.Context.Value(httpDialerKey{}).(*net.Dialer)
+	if !ok {
+		dialer = &net.Dialer{
+			Timeout:   30 * time.Second,
+			KeepAlive: 30 * time.Second,
 		}
 	}

@ -652,10 +613,8 @@ func NewClient(opts ...options.Option) client.Client {
 	} else {
 		// TODO customTransport := http.DefaultTransport.(*http.Transport).Clone()
 		tr := &http.Transport{
-			Proxy: http.ProxyFromEnvironment,
-			DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
-				return dialer(ctx, addr)
-			},
+			Proxy:                 http.ProxyFromEnvironment,
+			DialContext:           dialer.DialContext,
 			ForceAttemptHTTP2:     true,
 			MaxConnsPerHost:       100,
 			MaxIdleConns:          20,
@ -668,5 +627,10 @@ func NewClient(opts ...options.Option) client.Client {
 	}
 	c := client.Client(rc)

+	// wrap in reverse
+	for i := len(options.Wrappers); i > 0; i-- {
+		c = options.Wrappers[i-1](c)
+	}
+
 	return c
 }
--- a/http_test.go
+++ b/http_test.go
@ -7,57 +7,15 @@ import (
 )

 type Request struct {
-	Name     string `json:"name"`
-	Field1   string `json:"field1"`
-	ClientID string
-	Field2   string
-	Field3   int64
-}
-
-func TestPathWithHeader(t *testing.T) {
-	req := &Request{Name: "vtolstov", Field1: "field1", ClientID: "1234567890"}
-	p, m, err := newPathRequest(
-		"/api/v1/test?Name={name}&Field1={field1}",
-		"POST",
-		"*",
-		req,
-		nil,
-		map[string]map[string]string{"header": {"ClientID": "true"}},
-	)
-	if err != nil {
-		t.Fatal(err)
-	}
-	u, err := url.Parse(p)
-	if err != nil {
-		t.Fatal(err)
-	}
-	if m != nil {
-		t.Fatal("new struct must be nil")
-	}
-	if u.Query().Get("Name") != "vtolstov" || u.Query().Get("Field1") != "field1" {
-		t.Fatalf("invalid values %v", u.Query())
-	}
-}
-
-func TestPathValues(t *testing.T) {
-	req := &Request{Name: "vtolstov", Field1: "field1"}
-	p, m, err := newPathRequest("/api/v1/test?Name={name}&Field1={field1}", "POST", "*", req, nil, nil)
-	if err != nil {
-		t.Fatal(err)
-	}
-	u, err := url.Parse(p)
-	if err != nil {
-		t.Fatal(err)
-	}
-	_ = m
-	if u.Query().Get("Name") != "vtolstov" || u.Query().Get("Field1") != "field1" {
-		t.Fatalf("invalid values %v", u.Query())
-	}
+	Name   string `json:"name"`
+	Field1 string
+	Field2 string
+	Field3 int64
 }

 func TestValidPath(t *testing.T) {
 	req := &Request{Name: "vtolstov", Field1: "field1", Field2: "field2", Field3: 10}
-	p, m, err := newPathRequest("/api/v1/{name}/list", "GET", "", req, nil, nil)
+	p, m, err := newPathRequest("/api/v1/{name}/list", "GET", "", req, nil)
 	if err != nil {
 		t.Fatal(err)
 	}
@ -74,8 +32,9 @@ func TestValidPath(t *testing.T) {

 func TestInvalidPath(t *testing.T) {
 	req := &Request{Name: "vtolstov", Field1: "field1", Field2: "field2", Field3: 10}
-	_, _, err := newPathRequest("/api/v1/{xname}/list", "GET", "", req, nil, nil)
+	p, m, err := newPathRequest("/api/v1/{xname}/list", "GET", "", req, nil)
 	if err == nil {
-		t.Fatal("path param must not be filled")
+		t.Fatalf("path param must not be filled")
 	}
+	_, _ = p, m
 }
--- a/message.go
+++ b/message.go
@ -0,0 +1,36 @@
+package http
+
+import (
+	"github.com/unistack-org/micro/v3/client"
+)
+
+type httpMessage struct {
+	payload     interface{}
+	topic       string
+	contentType string
+}
+
+func newHTTPMessage(topic string, payload interface{}, contentType string, opts ...client.MessageOption) client.Message {
+	options := client.NewMessageOptions(opts...)
+	if len(options.ContentType) == 0 {
+		options.ContentType = contentType
+	}
+
+	return &httpMessage{
+		payload:     payload,
+		topic:       topic,
+		contentType: options.ContentType,
+	}
+}
+
+func (h *httpMessage) ContentType() string {
+	return h.contentType
+}
+
+func (h *httpMessage) Topic() string {
+	return h.topic
+}
+
+func (h *httpMessage) Payload() interface{} {
+	return h.payload
+}
--- a/options.go
+++ b/options.go
@ -4,8 +4,8 @@ import (
 	"net"
 	"net/http"

-	"go.unistack.org/micro/v4/metadata"
-	"go.unistack.org/micro/v4/options"
+	"github.com/unistack-org/micro/v3/client"
+	"github.com/unistack-org/micro/v3/metadata"
 )

 var (
@ -29,98 +29,77 @@ var (
 type poolMaxStreams struct{}

 // PoolMaxStreams maximum streams on a connectioin
-func PoolMaxStreams(n int) options.Option {
-	return options.ContextOption(poolMaxStreams{}, n)
+func PoolMaxStreams(n int) client.Option {
+	return client.SetOption(poolMaxStreams{}, n)
 }

 type poolMaxIdle struct{}

 // PoolMaxIdle maximum idle conns of a pool
-func PoolMaxIdle(d int) options.Option {
-	return options.ContextOption(poolMaxIdle{}, d)
+func PoolMaxIdle(d int) client.Option {
+	return client.SetOption(poolMaxIdle{}, d)
 }

 type maxRecvMsgSizeKey struct{}

 // MaxRecvMsgSize set the maximum size of message that client can receive.
-func MaxRecvMsgSize(s int) options.Option {
-	return options.ContextOption(maxRecvMsgSizeKey{}, s)
+func MaxRecvMsgSize(s int) client.Option {
+	return client.SetOption(maxRecvMsgSizeKey{}, s)
 }

 type maxSendMsgSizeKey struct{}

 // MaxSendMsgSize set the maximum size of message that client can send.
-func MaxSendMsgSize(s int) options.Option {
-	return options.ContextOption(maxSendMsgSizeKey{}, s)
+func MaxSendMsgSize(s int) client.Option {
+	return client.SetOption(maxSendMsgSizeKey{}, s)
 }

 type httpClientKey struct{}

 // nolint: golint
-// HTTPClient pass http.Client option to client Call
-func HTTPClient(c *http.Client) options.Option {
-	return options.ContextOption(httpClientKey{}, c)
+func HTTPClient(c *http.Client) client.Option {
+	return client.SetOption(httpClientKey{}, c)
 }

 type httpDialerKey struct{}

 // nolint: golint
-// HTTPDialer pass net.Dialer option to client
-func HTTPDialer(d *net.Dialer) options.Option {
-	return options.ContextOption(httpDialerKey{}, d)
+func HTTPDialer(d *net.Dialer) client.Option {
+	return client.SetOption(httpDialerKey{}, d)
 }

 type methodKey struct{}

-// Method pass method option to client Call
-func Method(m string) options.Option {
-	return options.ContextOption(methodKey{}, m)
+func Method(m string) client.CallOption {
+	return client.SetCallOption(methodKey{}, m)
 }

 type pathKey struct{}

-// Path spcecifies path option to client Call
-func Path(p string) options.Option {
-	return options.ContextOption(pathKey{}, p)
+func Path(p string) client.CallOption {
+	return client.SetCallOption(pathKey{}, p)
 }

 type bodyKey struct{}

-// Body specifies body option to client Call
-func Body(b string) options.Option {
-	return options.ContextOption(bodyKey{}, b)
+func Body(b string) client.CallOption {
+	return client.SetCallOption(bodyKey{}, b)
 }

 type errorMapKey struct{}

-func ErrorMap(m map[string]interface{}) options.Option {
-	return options.ContextOption(errorMapKey{}, m)
+func ErrorMap(m map[string]interface{}) client.CallOption {
+	return client.SetCallOption(errorMapKey{}, m)
 }

 type structTagsKey struct{}

-// StructTags pass tags slice option to client Call
-func StructTags(tags []string) options.Option {
-	return options.ContextOption(structTagsKey{}, tags)
+func StructTags(tags []string) client.CallOption {
+	return client.SetCallOption(structTagsKey{}, tags)
 }

 type metadataKey struct{}

-// Metadata pass metadata to client Call
-func Metadata(md metadata.Metadata) options.Option {
-	return options.ContextOption(metadataKey{}, md)
-}
-
-type cookieKey struct{}
-
-// Cookie pass cookie to client Call
-func Cookie(cookies ...string) options.Option {
-	return options.ContextOption(cookieKey{}, cookies)
-}
-
-type headerKey struct{}
-
-// Header pass cookie to client Call
-func Header(headers ...string) options.Option {
-	return options.ContextOption(headerKey{}, headers)
+func Metadata(md metadata.Metadata) client.CallOption {
+	return client.SetCallOption(metadataKey{}, md)
 }
--- a/request.go
+++ b/request.go
@ -1,9 +1,8 @@
 package http

 import (
-	"go.unistack.org/micro/v4/client"
-	"go.unistack.org/micro/v4/codec"
-	"go.unistack.org/micro/v4/options"
+	"github.com/unistack-org/micro/v3/client"
+	"github.com/unistack-org/micro/v3/codec"
 )

 type httpRequest struct {
@ -14,7 +13,7 @@ type httpRequest struct {
 	opts        client.RequestOptions
 }

-func newHTTPRequest(service, method string, request interface{}, contentType string, opts ...options.Option) client.Request {
+func newHTTPRequest(service, method string, request interface{}, contentType string, opts ...client.RequestOption) client.Request {
 	options := client.NewRequestOptions(opts...)
 	if len(options.ContentType) == 0 {
 		options.ContentType = contentType
--- a/stream.go
+++ b/stream.go
@ -9,10 +9,9 @@ import (
 	"net/http"
 	"sync"

-	"go.unistack.org/micro/v4/client"
-	"go.unistack.org/micro/v4/codec"
-	"go.unistack.org/micro/v4/errors"
-	"go.unistack.org/micro/v4/logger"
+	"github.com/unistack-org/micro/v3/client"
+	"github.com/unistack-org/micro/v3/codec"
+	"github.com/unistack-org/micro/v3/errors"
 )

 // Implements the streamer interface
@ -21,7 +20,6 @@ type httpStream struct {
 	conn    net.Conn
 	cf      codec.Codec
 	context context.Context
-	logger  logger.Logger
 	request client.Request
 	closed  chan bool
 	reader  *bufio.Reader
@ -54,10 +52,6 @@ func (h *httpStream) Response() client.Response {
 	return nil
 }

-func (h *httpStream) SendMsg(msg interface{}) error {
-	return h.Send(msg)
-}
-
 func (h *httpStream) Send(msg interface{}) error {
 	h.Lock()
 	defer h.Unlock()
@ -67,7 +61,7 @@ func (h *httpStream) Send(msg interface{}) error {
 		return errShutdown
 	}

-	hreq, err := newRequest(h.context, h.logger, h.address, h.request, h.ct, h.cf, msg, h.opts)
+	hreq, err := newRequest(h.context, h.address, h.request, h.ct, h.cf, msg, h.opts)
 	if err != nil {
 		return err
 	}
@ -75,10 +69,6 @@ func (h *httpStream) Send(msg interface{}) error {
 	return hreq.Write(h.conn)
 }

-func (h *httpStream) RecvMsg(msg interface{}) error {
-	return h.Recv(msg)
-}
-
 func (h *httpStream) Recv(msg interface{}) error {
 	h.Lock()
 	defer h.Unlock()
@ -94,7 +84,7 @@ func (h *httpStream) Recv(msg interface{}) error {
 	}
 	defer hrsp.Body.Close()

-	return h.parseRsp(h.context, h.logger, hrsp, h.cf, msg, h.opts)
+	return h.parseRsp(h.context, hrsp, h.cf, msg, h.opts)
 }

 func (h *httpStream) Error() error {
@ -103,10 +93,6 @@ func (h *httpStream) Error() error {
 	return h.err
 }

-func (h *httpStream) CloseSend() error {
-	return h.Close()
-}
-
 func (h *httpStream) Close() error {
 	select {
 	case <-h.closed:
@ -117,57 +103,41 @@ func (h *httpStream) Close() error {
 	}
 }

-func (h *httpStream) parseRsp(ctx context.Context, log logger.Logger, hrsp *http.Response, cf codec.Codec, rsp interface{}, opts client.CallOptions) error {
+func (h *httpStream) parseRsp(ctx context.Context, hrsp *http.Response, cf codec.Codec, rsp interface{}, opts client.CallOptions) error {
 	var err error
-	var buf []byte
-
-	// fast path return
-	if hrsp.StatusCode == http.StatusNoContent {
-		return nil
-	}

 	select {
 	case <-ctx.Done():
 		err = ctx.Err()
 	default:
-		if hrsp.Body != nil {
-			buf, err = io.ReadAll(hrsp.Body)
-			if err != nil {
-				if log.V(logger.ErrorLevel) {
-					log.Error(ctx, "failed to read body", err)
-				}
-				return errors.InternalServerError("go.micro.client", string(buf))
-			}
-		}
-
-		if log.V(logger.DebugLevel) {
-			log.Debug(ctx, fmt.Sprintf("response %s with %v", buf, hrsp.Header))
+		// fast path return
+		if hrsp.StatusCode == http.StatusNoContent {
+			return nil
 		}

 		if hrsp.StatusCode < 400 {
-			if err = cf.Unmarshal(buf, rsp); err != nil {
+			if err = cf.ReadBody(hrsp.Body, rsp); err != nil {
 				return errors.InternalServerError("go.micro.client", err.Error())
 			}
 			return nil
 		}

-		var rerr interface{}
 		errmap, ok := opts.Context.Value(errorMapKey{}).(map[string]interface{})
 		if ok && errmap != nil {
-			if rerr, ok = errmap[fmt.Sprintf("%d", hrsp.StatusCode)].(error); !ok {
-				rerr, ok = errmap["default"].(error)
+			if err, ok = errmap[fmt.Sprintf("%d", hrsp.StatusCode)].(error); !ok {
+				err, ok = errmap["default"].(error)
 			}
 		}
-		if !ok || rerr == nil {
+		if !ok || err == nil {
+			buf, cerr := io.ReadAll(hrsp.Body)
+			if cerr != nil {
+				return errors.InternalServerError("go.micro.client", cerr.Error())
+			}
 			return errors.New("go.micro.client", string(buf), int32(hrsp.StatusCode))
 		}

-		if cerr := cf.Unmarshal(buf, rerr); cerr != nil {
-			return errors.InternalServerError("go.micro.client", cerr.Error())
-		}
-
-		if err, ok = rerr.(error); !ok {
-			err = &Error{rerr}
+		if cerr := cf.ReadBody(hrsp.Body, err); cerr != nil {
+			err = errors.InternalServerError("go.micro.client", cerr.Error())
 		}
 	}

--- a/util.go
+++ b/util.go
@ -10,15 +10,14 @@ import (
 	"strings"
 	"sync"

-	"go.unistack.org/micro/v4/client"
-	"go.unistack.org/micro/v4/errors"
-	"go.unistack.org/micro/v4/logger"
-	"go.unistack.org/micro/v4/metadata"
-	rutil "go.unistack.org/micro/v4/util/reflect"
+	"github.com/unistack-org/micro/v3/client"
+	"github.com/unistack-org/micro/v3/errors"
+	rutil "github.com/unistack-org/micro/v3/util/reflect"
+	util "github.com/unistack-org/micro/v3/util/router"
 )

 var (
-	templateCache = make(map[string][]string)
+	templateCache = make(map[string]util.Template)
 	mu            sync.RWMutex
 )

@ -39,34 +38,21 @@ func GetError(err error) interface{} {
 	return err
 }

-func newPathRequest(path string, method string, body string, msg interface{}, tags []string, parameters map[string]map[string]string) (string, interface{}, error) {
+func newPathRequest(path string, method string, body string, msg interface{}, tags []string) (string, interface{}, error) {
 	// parse via https://github.com/googleapis/googleapis/blob/master/google/api/http.proto definition
 	tpl, err := newTemplate(path)
 	if err != nil {
 		return "", nil, err
 	}

-	if len(tpl) > 0 && msg == nil {
+	if len(tpl.Fields) > 0 && msg == nil {
 		return "", nil, fmt.Errorf("nil message but path params requested: %v", path)
 	}

 	fieldsmapskip := make(map[string]struct{})
-	fieldsmap := make(map[string]string, len(tpl))
-	for _, v := range tpl {
-		var vs, ve int
-		for i := 0; i < len(v); i++ {
-			switch v[i] {
-			case '{':
-				vs = i + 1
-			case '}':
-				ve = i
-			}
-			if ve != 0 {
-				fieldsmap[v[vs:ve]] = ""
-				vs = 0
-				ve = 0
-			}
-		}
+	fieldsmap := make(map[string]string, len(tpl.Fields))
+	for _, v := range tpl.Fields {
+		fieldsmap[v] = ""
 	}

 	nmsg, err := rutil.Zero(msg)
@ -93,15 +79,7 @@ func newPathRequest(path string, method string, body string, msg interface{}, ta
 			continue
 		}
 		fld := tmsg.Type().Field(i)
-		// Skip unexported fields.
-		if fld.PkgPath != "" {
-			continue
-		}
-		/* check for empty PkgPath can be replaced with new method IsExported
-		if !fld.IsExported() {
-			continue
-		}
-		*/
+
 		t := &tag{}
 		for _, tn := range tags {
 			ts, ok := fld.Tag.Lookup(tn)
@ -126,45 +104,35 @@ func newPathRequest(path string, method string, body string, msg interface{}, ta
 			}
 		}

-		cname := t.name
-		if cname == "" {
-			cname = fld.Name
+		if t.name == "" {
 			// fallback to lowercase
 			t.name = strings.ToLower(fld.Name)
 		}
-		if _, ok := parameters["header"][cname]; ok {
-			continue
-		}
-		if _, ok := parameters["cookie"][cname]; ok {
-			continue
-		}

 		if !val.IsValid() || val.IsZero() {
 			continue
 		}

-		// nolint: gocritic, nestif
+		// nolint: gocritic
 		if _, ok := fieldsmap[t.name]; ok {
 			switch val.Type().Kind() {
 			case reflect.Slice:
 				for idx := 0; idx < val.Len(); idx++ {
-					values.Add(t.name, getParam(val.Index(idx)))
+					values.Add(t.name, fmt.Sprintf("%v", val.Index(idx).Interface()))
 				}
 				fieldsmapskip[t.name] = struct{}{}
 			default:
-				fieldsmap[t.name] = getParam(val)
+				fieldsmap[t.name] = fmt.Sprintf("%v", val.Interface())
 			}
 		} else if (body == "*" || body == t.name) && method != http.MethodGet {
-			if tnmsg.Field(i).CanSet() {
-				tnmsg.Field(i).Set(val)
-			}
+			tnmsg.Field(i).Set(val)
 		} else {
 			if val.Type().Kind() == reflect.Slice {
 				for idx := 0; idx < val.Len(); idx++ {
-					values.Add(t.name, getParam(val.Index(idx)))
+					values.Add(t.name, fmt.Sprintf("%v", val.Index(idx).Interface()))
 				}
 			} else {
-				values.Add(t.name, getParam(val))
+				values.Add(t.name, fmt.Sprintf("%v", val.Interface()))
 			}
 		}
 	}
@ -178,36 +146,13 @@ func newPathRequest(path string, method string, body string, msg interface{}, ta
 	}

 	var b strings.Builder
-
-	for _, fld := range tpl {
+	for _, fld := range tpl.Pool {
 		_, _ = b.WriteRune('/')
-		// nolint: nestif
-		var vs, ve, vf int
-		var pholder bool
-		for i := 0; i < len(fld); i++ {
-			switch fld[i] {
-			case '{':
-				vs = i + 1
-			case '}':
-				ve = i
+		if v, ok := fieldsmap[fld]; ok {
+			if v != "" {
+				_, _ = b.WriteString(v)
 			}
-			// nolint: nestif
-			if vs > 0 && ve != 0 {
-				if vm, ok := fieldsmap[fld[vs:ve]]; ok {
-					if vm != "" {
-						_, _ = b.WriteString(fld[vf : vs-1])
-						_, _ = b.WriteString(vm)
-						vf = ve + 1
-					}
-				} else {
-					_, _ = b.WriteString(fld)
-				}
-				vs = 0
-				ve = 0
-				pholder = true
-			}
-		}
-		if !pholder {
+		} else {
 			_, _ = b.WriteString(fld)
 		}
 	}
@ -217,25 +162,14 @@ func newPathRequest(path string, method string, body string, msg interface{}, ta
 		_, _ = b.WriteString(values.Encode())
 	}

-	if rutil.IsZero(nmsg) && !isEmptyStruct(nmsg) {
+	if rutil.IsZero(nmsg) {
 		return b.String(), nil, nil
 	}

 	return b.String(), nmsg, nil
 }

-func isEmptyStruct(v interface{}) bool {
-	val := reflect.ValueOf(v)
-	if val.Kind() == reflect.Ptr {
-		val = val.Elem()
-	}
-	return val.Kind() == reflect.Struct && val.NumField() == 0
-}
-
-func newTemplate(path string) ([]string, error) {
-	if len(path) == 0 || path[0] != '/' {
-		return nil, fmt.Errorf("path must starts with /")
-	}
+func newTemplate(path string) (util.Template, error) {
 	mu.RLock()
 	tpl, ok := templateCache[path]
 	if ok {
@ -244,7 +178,12 @@ func newTemplate(path string) ([]string, error) {
 	}
 	mu.RUnlock()

-	tpl = strings.Split(path[1:], "/")
+	rule, err := util.Parse(path)
+	if err != nil {
+		return tpl, err
+	}
+
+	tpl = rule.Compile()
 	mu.Lock()
 	templateCache[path] = tpl
 	mu.Unlock()
@ -254,55 +193,29 @@ func newTemplate(path string) ([]string, error) {

 func (h *httpClient) parseRsp(ctx context.Context, hrsp *http.Response, rsp interface{}, opts client.CallOptions) error {
 	var err error
-	var buf []byte
-
-	// fast path return
-	if hrsp.StatusCode == http.StatusNoContent {
-		return nil
-	}
-
-	if opts.ResponseMetadata != nil {
-		*opts.ResponseMetadata = metadata.New(len(hrsp.Header))
-		for k, v := range hrsp.Header {
-			opts.ResponseMetadata.Set(k, strings.Join(v, ","))
-		}
-	}

 	select {
 	case <-ctx.Done():
 		err = ctx.Err()
 	default:
+		// fast path return
+		if hrsp.StatusCode == http.StatusNoContent {
+			return nil
+		}
 		ct := DefaultContentType

 		if htype := hrsp.Header.Get("Content-Type"); htype != "" {
 			ct = htype
 		}

-		if hrsp.Body != nil {
-			buf, err = io.ReadAll(hrsp.Body)
-			if err != nil {
-				if h.opts.Logger.V(logger.ErrorLevel) {
-					h.opts.Logger.Error(ctx, "failed to read body", err)
-				}
-				return errors.InternalServerError("go.micro.client", string(buf))
-			}
-		}
-
 		cf, cerr := h.newCodec(ct)
 		if cerr != nil {
-			if h.opts.Logger.V(logger.DebugLevel) {
-				h.opts.Logger.Debug(ctx, fmt.Sprintf("response with %v unknown content-type %s %s", hrsp.Header, ct, buf))
-			}
 			return errors.InternalServerError("go.micro.client", cerr.Error())
 		}

-		if h.opts.Logger.V(logger.DebugLevel) {
-			h.opts.Logger.Debug(ctx, fmt.Sprintf("response %s with %v", buf, hrsp.Header))
-		}
-
 		// succeseful response
 		if hrsp.StatusCode < 400 {
-			if err = cf.Unmarshal(buf, rsp); err != nil {
+			if err = cf.ReadBody(hrsp.Body, rsp); err != nil {
 				return errors.InternalServerError("go.micro.client", err.Error())
 			}
 			return nil
@ -319,10 +232,14 @@ func (h *httpClient) parseRsp(ctx context.Context, hrsp *http.Response, rsp inte
 		}

 		if !ok || rerr == nil {
+			buf, rerr := io.ReadAll(hrsp.Body)
+			if rerr != nil {
+				return errors.InternalServerError("go.micro.client", rerr.Error())
+			}
 			return errors.New("go.micro.client", string(buf), int32(hrsp.StatusCode))
 		}

-		if cerr := cf.Unmarshal(buf, rerr); cerr != nil {
+		if cerr := cf.ReadBody(hrsp.Body, rerr); cerr != nil {
 			return errors.InternalServerError("go.micro.client", cerr.Error())
 		}

@ -339,26 +256,3 @@ type tag struct {
 	key  string
 	name string
 }
-
-func getParam(val reflect.Value) string {
-	var v string
-	switch val.Kind() {
-	case reflect.Ptr:
-		switch reflect.Indirect(val).Type().String() {
-		case
-			"wrapperspb.BoolValue",
-			"wrapperspb.BytesValue",
-			"wrapperspb.DoubleValue",
-			"wrapperspb.FloatValue",
-			"wrapperspb.Int32Value", "wrapperspb.Int64Value",
-			"wrapperspb.StringValue",
-			"wrapperspb.UInt32Value", "wrapperspb.UInt64Value":
-			if eva := reflect.Indirect(val).FieldByName("Value"); eva.IsValid() {
-				v = getParam(eva)
-			}
-		}
-	default:
-		v = fmt.Sprintf("%v", val.Interface())
-	}
-	return v
-}
--- a/util_test.go
+++ b/util_test.go
@ -5,31 +5,13 @@ import (
 	"testing"
 )

-func TestParsing(t *testing.T) {
-	type Message struct {
-		IIN string `protobuf:"bytes,1,opt,name=iin,proto3" json:"iin"`
-	}
-
-	omsg := &Message{IIN: "5555"}
-
-	for _, m := range []string{"POST"} {
-		body := ""
-		path, nmsg, err := newPathRequest("/users/iin/{iin}/push-notifications", m, body, omsg, []string{"protobuf", "json"}, nil)
-		if err != nil {
-			t.Fatal(err)
-		}
-		u, err := url.Parse(path)
-		if err != nil {
-			t.Fatal(err)
-		}
-		_ = nmsg
-		if u.Path != "/users/iin/5555/push-notifications" {
-			t.Fatalf("newPathRequest invalid path %s", u.Path)
-		}
-		if nmsg != nil {
-			t.Fatalf("new message must be nil: %v\n", nmsg)
-		}
+func TestTemplate(t *testing.T) {
+	tpl, err := newTemplate("/v1/{ClientID}/list")
+	if err != nil {
+		t.Fatal(err)
 	}
+	_ = tpl
+	//	fmt.Printf("%#+v\n", tpl.Pool)
 }

 func TestNewPathRequest(t *testing.T) {
@ -44,7 +26,7 @@ func TestNewPathRequest(t *testing.T) {

 	for _, m := range []string{"POST", "PUT", "PATCH", "GET", "DELETE"} {
 		body := ""
-		path, nmsg, err := newPathRequest("/v1/test", m, body, omsg, []string{"protobuf", "json"}, nil)
+		path, nmsg, err := newPathRequest("/v1/test", m, body, omsg, []string{"protobuf", "json"})
 		if err != nil {
 			t.Fatal(err)
 		}
@ -59,38 +41,6 @@ func TestNewPathRequest(t *testing.T) {
 	}
 }

-func TestNewPathRequestWithEmptyBody(t *testing.T) {
-	val := struct{}{}
-	cases := []string{
-		"",
-		"*",
-		"{}",
-		"nil",
-		`{"type": "invalid"}`,
-	}
-
-	for _, body := range cases {
-		for _, m := range []string{"POST", "PUT", "PATCH", "GET", "DELETE"} {
-			path, nmsg, err := newPathRequest("/v1/test", m, body, val, []string{"protobuf", "json"}, nil)
-			if err != nil {
-				t.Fatal(err)
-			}
-			if nmsg == nil {
-				t.Fatalf("invalid path: nil nmsg")
-			}
-
-			u, err := url.Parse(path)
-			if err != nil {
-				t.Fatal(err)
-			}
-			vals := u.Query()
-			if len(vals) != 0 {
-				t.Fatalf("invalid path: %v nmsg: %v", path, nmsg)
-			}
-		}
-	}
-}
-
 func TestNewPathVarRequest(t *testing.T) {
 	type Message struct {
 		Name string `json:"name"`
@ -106,7 +56,7 @@ func TestNewPathVarRequest(t *testing.T) {
 		if m != "GET" {
 			body = "*"
 		}
-		path, nmsg, err := newPathRequest("/v1/test/{val1}", m, body, omsg, []string{"protobuf", "json"}, nil)
+		path, nmsg, err := newPathRequest("/v1/test/{val1}", m, body, omsg, []string{"protobuf", "json"})
 		if err != nil {
 			t.Fatal(err)
 		}