update tests

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

.github/dependabot.yml

@@ -0,0 +1,19 @@
+# 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/renovate.json

@@ -1,19 +0,0 @@
-{
-  "extends": [
-    "config:base"
-  ],
-  "packageRules": [
-    {
-      "matchUpdateTypes": ["minor", "patch", "pin", "digest"],
-      "automerge": true
-    },
-    {
-      "groupName": "all deps",
-      "separateMajorMinor": true,
-      "groupSlug": "all",
-      "packagePatterns": [
-        "*"
-      ]
-    }
-  ]
-}

.github/stale.sh

@@ -1,13 +0,0 @@
-#!/bin/bash -ex
-
-export PATH=$PATH:$(pwd)/bin
-export GO111MODULE=on
-export GOBIN=$(pwd)/bin
-
-#go get github.com/rvflash/goup@v0.4.1
-
-#goup -v ./...
-#go get github.com/psampaz/go-mod-outdated@v0.6.0
-go list -u -m -mod=mod -json all | go-mod-outdated -update -direct -ci || true
-
-#go list -u -m -json all | go-mod-outdated -update

.github/workflows/autoapprove.yml

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

.github/workflows/automerge.yml

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

.github/workflows/build.yml

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

.github/workflows/codeql-analysis.yml

@@ -0,0 +1,78 @@
+# 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

@@ -0,0 +1,27 @@
+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/pr.yml

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

.golangci.yml

@@ -0,0 +1,44 @@
+run:
+  concurrency: 4
+  deadline: 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

@@ -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/github.com/unistack-org/micro-client-http#Client) interface.
+It complies with the [micro.Client](https://godoc.org/go.unistack.org/micro-client-http/v4#Client) interface.
 
 ## Usage
 
 ### Use directly
 
 ```go
-import "github.com/unistack-org/micro-client-http"
+import "go.unistack.org/micro-client-http/v4"
 
 service := micro.NewService(
 	micro.Name("my.service"),

go.mod

@@ -1,5 +1,5 @@
-module github.com/unistack-org/micro-client-http/v3
+module go.unistack.org/micro-client-http/v4
 
-go 1.16
+go 1.19
 
-require github.com/unistack-org/micro/v3 v3.2.23
+require go.unistack.org/micro/v4 v4.0.18

go.sum

@@ -1,156 +1,6 @@
-cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
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-github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
-github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
-github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
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-github.com/dgrijalva/jwt-go v3.2.0+incompatible h1:7qlOGliEKZXTDg6OTjfoBKDXWrumCAMpl/TFQ4/5kLM=
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-github.com/unistack-org/micro/v3 v3.2.14/go.mod h1:3j13mSd/rILNjyP0tEVtDxyDkJBtnHUXShNCuPHkC5A=
-github.com/unistack-org/micro/v3 v3.2.15 h1:9Wg6FAFVPUijAm5ZFF+y4oYEd8zd/Pp48QwmMrSs074=
-github.com/unistack-org/micro/v3 v3.2.15/go.mod h1:y+fV+BPNK2IqGoLquRU396jTYifG0HCw3zxFfI4E0dc=
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-github.com/unistack-org/micro/v3 v3.2.22/go.mod h1:oI8H/uGq1h4i5cvUycEoFKJQC7G8yChZQNIDNWGSLRU=
-golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
-golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
-golang.org/x/crypto v0.0.0-20201221181555-eec23a3978ad/go.mod h1:jdWPYTVW3xRLrWPugEBEK3UY2ZEsg3UU495nc5E+M+I=
-golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
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-golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20190923162816-aa69164e4478/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20201224014010-6772e930b67b/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
-golang.org/x/net v0.0.0-20210119194325-5f4716e94777/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
-golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
-golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
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-golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20190924154521-2837fb4f24fe/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/term v0.0.0-20201117132131-f5c789dd3221/go.mod h1:Nr5EML6q2oocZ2LXRh80K7BxOlk5/8JxuGnuhpl+muw=
-golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
-golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
-golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
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-golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
-golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
-google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
-google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
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-google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
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-google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo=
-google.golang.org/protobuf v1.22.0 h1:cJv5/xdbk1NnMPR1VP9+HU6gupuG9MLBoH1r6RHZ2MY=
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-gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f h1:BLraFXnmrev5lT+xlilqcH8XK9/i0At2xKjWk4p6zsU=
-gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/yaml.v2 v2.3.0 h1:clyUAQHOM3G0M3f5vQj7LuJrETvjVot3Z5el9nffUtU=
-gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
-gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
-honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
+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=

http.go

@@ -1,5 +1,5 @@
 // Package http provides a http client
-package http
+package http // import "go.unistack.org/micro-client-http/v4"
 
 import (
 	"bufio"
@@ -10,174 +10,293 @@ import (
 	"net"
 	"net/http"
 	"net/url"
-	"os"
+	"strings"
+	"sync"
 	"time"
 
-	"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"
-	"github.com/unistack-org/micro/v3/router"
+	"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"
 )
 
-var (
-	DefaultContentType = "application/json"
-)
+var DefaultContentType = "application/json"
 
+/*
 func filterLabel(r []router.Route) []router.Route {
 	//				selector.FilterLabel("protocol", "http")
 	return r
 }
+*/
 
 type httpClient struct {
-	opts    client.Options
-	dialer  *net.Dialer
 	httpcli *http.Client
+	opts    client.Options
+	sync.RWMutex
+	init bool
 }
 
-func newRequest(addr string, req client.Request, cf codec.Codec, msg interface{}, opts client.CallOptions) (*http.Request, error) {
-	hreq := &http.Request{Method: http.MethodPost}
+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) {
+	var tags []string
+	var parameters map[string]map[string]string
+	scheme := "http"
+	method := http.MethodPost
 	body := "*" // as like google api http annotation
+	host := addr
+	path := req.Endpoint()
+
 	u, err := url.Parse(addr)
-	if err != nil {
-		hreq.URL = &url.URL{
-			Scheme: "http",
-			Host:   addr,
-			Path:   req.Endpoint(),
-		}
-		hreq.Host = addr
+	if err == nil {
+		scheme = u.Scheme
+		path = u.Path
+		host = u.Host
 	} else {
-		ep := req.Endpoint()
-		if opts.Context != nil {
-			if m, ok := opts.Context.Value(methodKey{}).(string); ok {
-				hreq.Method = m
+		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
+		}
+		if p, ok := opts.Context.Value(pathKey{}).(string); ok {
+			path += p
+		}
+		if b, ok := opts.Context.Value(bodyKey{}).(string); ok {
+			body = b
+		}
+		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)
 			}
-			if p, ok := opts.Context.Value(pathKey{}).(string); ok {
-				ep = p
+			m, ok := parameters["header"]
+			if !ok {
+				m = make(map[string]string)
+				parameters["header"] = m
 			}
-			if b, ok := opts.Context.Value(bodyKey{}).(string); ok {
-				body = b
+			for idx := 0; idx < len(k)/2; idx += 2 {
+				m[k[idx]] = k[idx+1]
 			}
 		}
-		hreq.URL, err = u.Parse(ep)
-		if err != nil {
-			return nil, errors.BadRequest("go.micro.client", err.Error())
+		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]
+			}
 		}
 	}
 
-	path, nmsg, err := newPathRequest(hreq.URL.Path, hreq.Method, body, msg)
+	if len(tags) == 0 {
+		switch ct {
+		default:
+			tags = append(tags, "json", "protobuf")
+		case "text/xml":
+			tags = append(tags, "xml")
+		}
+	}
+
+	if path == "" {
+		path = req.Endpoint()
+	}
+
+	u, err = u.Parse(path)
 	if err != nil {
 		return nil, errors.BadRequest("go.micro.client", err.Error())
 	}
 
-	hreq.URL.Path = path
-	// marshal request
+	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)
+	}
+
+	if err != nil {
+		return nil, errors.BadRequest("go.micro.client", 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)})
+			}
+		}
+	}
+
 	b, err := cf.Marshal(nmsg)
 	if err != nil {
 		return nil, errors.BadRequest("go.micro.client", err.Error())
 	}
 
-	hreq.Body = ioutil.NopCloser(bytes.NewBuffer(b))
-	hreq.ContentLength = int64(len(b))
+	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())
+	}
+
+	hreq.Header = header
+	for _, cookie := range cookies {
+		hreq.AddCookie(cookie)
+	}
+
+	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))
+	}
 
 	return hreq, nil
 }
 
 func (h *httpClient) call(ctx context.Context, addr string, req client.Request, rsp interface{}, opts client.CallOptions) error {
-	header := make(http.Header, 2)
-	if md, ok := metadata.FromContext(ctx); ok {
-		for k, v := range md {
-			header.Set(k, v)
-		}
+	ct := req.ContentType()
+	if len(opts.ContentType) > 0 {
+		ct = opts.ContentType
 	}
 
-	// set timeout in nanoseconds
-	header.Set("Timeout", fmt.Sprintf("%d", opts.RequestTimeout))
-	// set the content type for the request
-	header.Set("Content-Type", req.ContentType())
-
-	// get codec
-	cf, err := h.newCodec(req.ContentType())
+	cf, err := h.newCodec(ct)
 	if err != nil {
-		return errors.InternalServerError("go.micro.client", err.Error())
+		return errors.BadRequest("go.micro.client", err.Error())
 	}
-
-	hreq, err := newRequest(addr, req, cf, req.Body(), opts)
+	hreq, err := newRequest(ctx, h.opts.Logger, addr, req, ct, cf, req.Body(), opts)
 	if err != nil {
 		return err
 	}
 
-	hreq.Header = header
-
 	// make the request
-	hrsp, err := h.httpcli.Do(hreq.WithContext(ctx))
+	hrsp, err := h.httpcli.Do(hreq)
 	if err != nil {
 		switch err := err.(type) {
-		case net.Error:
-			if err.Timeout() {
-				return errors.Timeout("go.micro.client", err.Error())
-			}
 		case *url.Error:
 			if err, ok := err.Err.(net.Error); ok && err.Timeout() {
 				return errors.Timeout("go.micro.client", err.Error())
 			}
+		case net.Error:
+			if err.Timeout() {
+				return errors.Timeout("go.micro.client", err.Error())
+			}
 		}
 		return errors.InternalServerError("go.micro.client", err.Error())
 	}
 
 	defer hrsp.Body.Close()
 
-	return parseRsp(ctx, hrsp, cf, rsp, opts)
+	return h.parseRsp(ctx, hrsp, rsp, opts)
 }
 
 func (h *httpClient) stream(ctx context.Context, addr string, req client.Request, opts client.CallOptions) (client.Stream, error) {
-	var header http.Header
-
-	if md, ok := metadata.FromContext(ctx); ok {
-		header = make(http.Header, len(md)+2)
-		for k, v := range md {
-			header.Set(k, v)
-		}
-	} else {
-		header = make(http.Header, 2)
+	ct := req.ContentType()
+	if len(opts.ContentType) > 0 {
+		ct = opts.ContentType
 	}
 
-	// set timeout in nanoseconds
-	header.Set("Timeout", fmt.Sprintf("%d", opts.RequestTimeout))
-	// set the content type for the request
-	header.Set("Content-Type", req.ContentType())
-
 	// get codec
-	cf, err := h.newCodec(req.ContentType())
+	cf, err := h.newCodec(ct)
 	if err != nil {
-		return nil, errors.InternalServerError("go.micro.client", err.Error())
+		return nil, errors.BadRequest("go.micro.client", err.Error())
 	}
 
-	dialAddr := addr
-	u, err := url.Parse(dialAddr)
-	if err == nil && u.Scheme != "" && u.Host != "" {
-		dialAddr = u.Host
-	}
-	cc, err := h.dialer.DialContext(ctx, "tcp", addr)
+	cc, err := (h.httpcli.Transport).(*http.Transport).DialContext(ctx, "tcp", addr)
 	if err != nil {
 		return nil, errors.InternalServerError("go.micro.client", fmt.Sprintf("Error dialing: %v", err))
 	}
 
 	return &httpStream{
 		address: addr,
+		logger:  h.opts.Logger,
 		context: ctx,
 		closed:  make(chan bool),
 		opts:    opts,
 		conn:    cc,
-		codec:   cf,
-		header:  header,
+		ct:      ct,
+		cf:      cf,
 		reader:  bufio.NewReader(cc),
 		request: req,
 	}, nil
 }
 
 func (h *httpClient) newCodec(ct string) (codec.Codec, error) {
+	h.RLock()
+	defer h.RUnlock()
+
+	if idx := strings.IndexRune(ct, ';'); idx >= 0 {
+		ct = ct[:idx]
+	}
+
 	if c, ok := h.opts.Codecs[ct]; ok {
 		return c, nil
 	}
@@ -185,10 +304,27 @@ func (h *httpClient) newCodec(ct string) (codec.Codec, error) {
 	return nil, codec.ErrUnknownContentType
 }
 
-func (h *httpClient) Init(opts ...client.Option) error {
+func (h *httpClient) Init(opts ...options.Option) error {
+	if len(opts) == 0 && h.init {
+		return nil
+	}
 	for _, o := range opts {
 		o(&h.opts)
 	}
+
+	if err := h.opts.Tracer.Init(); err != nil {
+		return err
+	}
+	if err := h.opts.Router.Init(); err != nil {
+		return err
+	}
+	if err := h.opts.Logger.Init(); err != nil {
+		return err
+	}
+	if err := h.opts.Meter.Init(); err != nil {
+		return err
+	}
+
 	return nil
 }
 
@@ -196,15 +332,11 @@ func (h *httpClient) Options() client.Options {
 	return h.opts
 }
 
-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 ...options.Option) client.Request {
+	return newHTTPRequest(service, method, req, h.opts.ContentType, opts...)
 }
 
-func (h *httpClient) NewRequest(service, method string, req interface{}, reqOpts ...client.RequestOption) client.Request {
-	return newHTTPRequest(service, method, req, h.opts.ContentType, reqOpts...)
-}
-
-func (h *httpClient) Call(ctx context.Context, req client.Request, rsp interface{}, opts ...client.CallOption) error {
+func (h *httpClient) Call(ctx context.Context, req client.Request, rsp interface{}, opts ...options.Option) error {
 	// make a copy of call opts
 	callOpts := h.opts.CallOptions
 	for _, opt := range opts {
@@ -221,8 +353,9 @@ 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
-		opt := client.WithRequestTimeout(d.Sub(time.Now()))
-		opt(&callOpts)
+		if err := options.Set(&callOpts, time.Until(d), ".RequestTimeout"); err != nil {
+			return errors.New("go.micro.client", fmt.Sprintf("%v", err.Error()), 400)
+		}
 	}
 
 	// should we noop right here?
@@ -236,9 +369,9 @@ 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 {
@@ -255,18 +388,7 @@ func (h *httpClient) Call(ctx context.Context, req client.Request, rsp interface
 		callOpts.Address = []string{h.opts.Proxy}
 	}
 
-	// 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
-	}
+	var next selector.Next
 
 	// return errors.New("go.micro.client", "request timeout", 408)
 	call := func(i int) error {
@@ -281,6 +403,22 @@ 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
@@ -331,25 +469,28 @@ 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 ...client.CallOption) (client.Stream, error) {
+func (h *httpClient) Stream(ctx context.Context, req client.Request, opts ...options.Option) (client.Stream, error) {
+	var err error
+
 	// make a copy of call opts
 	callOpts := h.opts.CallOptions
-	for _, opt := range opts {
-		opt(&callOpts)
+	for _, o := range opts {
+		o(&callOpts)
 	}
 
 	// check if we already have a deadline
 	d, ok := ctx.Deadline()
-	if !ok {
+	if !ok && callOpts.StreamTimeout > time.Duration(0) {
 		var cancel context.CancelFunc
 		// no deadline so we create a new one
-		ctx, cancel = context.WithTimeout(ctx, callOpts.RequestTimeout)
+		ctx, cancel = context.WithTimeout(ctx, callOpts.StreamTimeout)
 		defer cancel()
 	} else {
 		// got a deadline so no need to setup context
 		// but we need to set the timeout we pass along
-		opt := client.WithRequestTimeout(d.Sub(time.Now()))
-		opt(&callOpts)
+		if err = options.Set(&callOpts, time.Until(d), ".StreamTimeout"); err != nil {
+			return nil, errors.New("go.micro.client", fmt.Sprintf("%v", err.Error()), 400)
+		}
 	}
 
 	// should we noop right here?
@@ -361,10 +502,7 @@ func (h *httpClient) Stream(ctx context.Context, req client.Request, opts ...cli
 
 	/*
 		// make copy of call method
-		hstream, err := h.stream()
-		if err != nil {
-			return nil, err
-		}
+		hstream := h.stream
 		// wrap the call in reverse
 		for i := len(callOpts.CallWrappers); i > 0; i-- {
 			hstream = callOpts.CallWrappers[i-1](hstream)
@@ -386,24 +524,13 @@ func (h *httpClient) Stream(ctx context.Context, req client.Request, opts ...cli
 		callOpts.Address = []string{h.opts.Proxy}
 	}
 
-	// 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
-	}
+	var next selector.Next
 
 	call := func(i int) (client.Stream, error) {
 		// call backoff first. Someone may want an initial start delay
-		t, err := callOpts.Backoff(ctx, req, i)
-		if err != nil {
-			return nil, errors.InternalServerError("go.micro.client", err.Error())
+		t, cerr := callOpts.Backoff(ctx, req, i)
+		if cerr != nil {
+			return nil, errors.InternalServerError("go.micro.client", cerr.Error())
 		}
 
 		// only sleep if greater than 0
@@ -411,21 +538,37 @@ func (h *httpClient) Stream(ctx context.Context, req client.Request, opts ...cli
 			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, err := h.stream(ctx, node, req, callOpts)
+		stream, cerr := h.stream(ctx, node, req, callOpts)
 
 		// record the result of the call to inform future routing decisions
-		if verr := h.opts.Selector.Record(node, err); verr != nil {
+		if verr := h.opts.Selector.Record(node, cerr); verr != nil {
 			return nil, verr
 		}
 
 		// try and transform the error to a go-micro error
-		if verr, ok := err.(*errors.Error); ok {
+		if verr, ok := cerr.(*errors.Error); ok {
 			return nil, verr
 		}
 
-		return stream, err
+		return stream, cerr
 	}
 
 	type response struct {
@@ -438,8 +581,8 @@ func (h *httpClient) Stream(ctx context.Context, req client.Request, opts ...cli
 
 	for i := 0; i <= callOpts.Retries; i++ {
 		go func() {
-			s, err := call(i)
-			ch <- response{s, err}
+			s, cerr := call(i)
+			ch <- response{s, cerr}
 		}()
 
 		select {
@@ -467,52 +610,6 @@ func (h *httpClient) Stream(ctx context.Context, req client.Request, opts ...cli
 	return nil, grr
 }
 
-func (h *httpClient) Publish(ctx context.Context, p client.Message, opts ...client.PublishOption) error {
-	options := client.NewPublishOptions(opts...)
-
-	md, ok := metadata.FromContext(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))
-}
-
 func (h *httpClient) String() string {
 	return "http"
 }
@@ -521,7 +618,7 @@ func (h *httpClient) Name() string {
 	return h.opts.Name
 }
 
-func NewClient(opts ...client.Option) client.Client {
+func NewClient(opts ...options.Option) client.Client {
 	options := client.NewOptions(opts...)
 
 	if len(options.ContentType) == 0 {
@@ -532,58 +629,44 @@ func NewClient(opts ...client.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)
+		}
+	}
+
 	if httpcli, ok := options.Context.Value(httpClientKey{}).(*http.Client); ok {
 		rc.httpcli = httpcli
 	} else {
-		rc.httpcli = http.DefaultClient
+		// 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)
+			},
+			ForceAttemptHTTP2:     true,
+			MaxConnsPerHost:       100,
+			MaxIdleConns:          20,
+			IdleConnTimeout:       60 * time.Second,
+			TLSHandshakeTimeout:   10 * time.Second,
+			ExpectContinueTimeout: 1 * time.Second,
+			TLSClientConfig:       options.TLSConfig,
+		}
+		rc.httpcli = &http.Client{Transport: tr}
 	}
-	if dialer, ok := options.Context.Value(httpDialerKey{}).(*net.Dialer); ok {
-		rc.dialer = dialer
-	} else {
-		rc.dialer = &net.Dialer{}
-	}
-
 	c := client.Client(rc)
 
-	// wrap in reverse
-	for i := len(options.Wrappers); i > 0; i-- {
-		c = options.Wrappers[i-1](c)
-	}
-
 	return c
 }
-
-func parseRsp(ctx context.Context, hrsp *http.Response, cf codec.Codec, rsp interface{}, opts client.CallOptions) error {
-	b, err := ioutil.ReadAll(hrsp.Body)
-	if err != nil {
-		return errors.InternalServerError("go.micro.client", err.Error())
-	}
-
-	if hrsp.StatusCode < 400 {
-		// unmarshal
-		if err := cf.Unmarshal(b, rsp); err != nil {
-			return errors.InternalServerError("go.micro.client", err.Error())
-		}
-		return nil
-	}
-
-	errmap, ok := opts.Context.Value(errorMapKey{}).(map[string]interface{})
-	if !ok || errmap == nil {
-		// user not provide map of errors
-		// id: req.Service() ??
-		return errors.New("go.micro.client", string(b), int32(hrsp.StatusCode))
-	}
-
-	if err, ok = errmap[fmt.Sprintf("%d", hrsp.StatusCode)].(error); !ok {
-		err, ok = errmap["default"].(error)
-	}
-	if !ok {
-		return errors.New("go.micro.client", string(b), int32(hrsp.StatusCode))
-	}
-
-	if cerr := cf.Unmarshal(b, err); cerr != nil {
-		return errors.InternalServerError("go.micro.client", cerr.Error())
-	}
-
-	return err
-}

http_test.go

@@ -7,15 +7,57 @@ import (
 )
 
 type Request struct {
-	Name   string `json:"name"`
-	Field1 string
-	Field2 string
-	Field3 int64
+	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())
+	}
 }
 
 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)
+	p, m, err := newPathRequest("/api/v1/{name}/list", "GET", "", req, nil, nil)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -32,9 +74,8 @@ func TestValidPath(t *testing.T) {
 
 func TestInvalidPath(t *testing.T) {
 	req := &Request{Name: "vtolstov", Field1: "field1", Field2: "field2", Field3: 10}
-	p, m, err := newPathRequest("/api/v1/{xname}/list", "GET", "", req)
+	_, _, err := newPathRequest("/api/v1/{xname}/list", "GET", "", req, nil, nil)
 	if err == nil {
-		t.Fatalf("path param must not be filled")
+		t.Fatal("path param must not be filled")
 	}
-	_, _ = p, m
 }

message.go

@@ -1,36 +0,0 @@
-package http
-
-import (
-	"github.com/unistack-org/micro/v3/client"
-)
-
-type httpMessage struct {
-	topic       string
-	contentType string
-	payload     interface{}
-}
-
-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
-}

options.go

@@ -1,11 +1,11 @@
 package http
 
 import (
-	"crypto/tls"
 	"net"
 	"net/http"
 
-	"github.com/unistack-org/micro/v3/client"
+	"go.unistack.org/micro/v4/metadata"
+	"go.unistack.org/micro/v4/options"
 )
 
 var (
@@ -27,71 +27,100 @@ var (
 )
 
 type poolMaxStreams struct{}
+
+// PoolMaxStreams maximum streams on a connectioin
+func PoolMaxStreams(n int) options.Option {
+	return options.ContextOption(poolMaxStreams{}, n)
+}
+
 type poolMaxIdle struct{}
-type codecsKey struct{}
-type tlsAuth struct{}
+
+// PoolMaxIdle maximum idle conns of a pool
+func PoolMaxIdle(d int) options.Option {
+	return options.ContextOption(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)
+}
+
 type maxSendMsgSizeKey struct{}
 
-// maximum streams on a connectioin
-func PoolMaxStreams(n int) client.Option {
-	return client.SetOption(poolMaxStreams{}, n)
-}
-
-// maximum idle conns of a pool
-func PoolMaxIdle(d int) client.Option {
-	return client.SetOption(poolMaxIdle{}, d)
-}
-
-// AuthTLS should be used to setup a secure authentication using TLS
-func AuthTLS(t *tls.Config) client.Option {
-	return client.SetOption(tlsAuth{}, t)
-}
-
-//
-// MaxRecvMsgSize set the maximum size of message that client can receive.
-func MaxRecvMsgSize(s int) client.Option {
-	return client.SetOption(maxRecvMsgSizeKey{}, s)
-}
-
-//
 // MaxSendMsgSize set the maximum size of message that client can send.
-func MaxSendMsgSize(s int) client.Option {
-	return client.SetOption(maxSendMsgSizeKey{}, s)
+func MaxSendMsgSize(s int) options.Option {
+	return options.ContextOption(maxSendMsgSizeKey{}, s)
 }
 
 type httpClientKey struct{}
 
-func HTTPClient(c *http.Client) client.Option {
-	return client.SetOption(httpClientKey{}, c)
+// nolint: golint
+// HTTPClient pass http.Client option to client Call
+func HTTPClient(c *http.Client) options.Option {
+	return options.ContextOption(httpClientKey{}, c)
 }
 
 type httpDialerKey struct{}
 
-func HTTPDialer(d *net.Dialer) client.Option {
-	return client.SetOption(httpDialerKey{}, d)
+// nolint: golint
+// HTTPDialer pass net.Dialer option to client
+func HTTPDialer(d *net.Dialer) options.Option {
+	return options.ContextOption(httpDialerKey{}, d)
 }
 
 type methodKey struct{}
 
-func Method(m string) client.CallOption {
-	return client.SetCallOption(methodKey{}, m)
+// Method pass method option to client Call
+func Method(m string) options.Option {
+	return options.ContextOption(methodKey{}, m)
 }
 
 type pathKey struct{}
 
-func Path(p string) client.CallOption {
-	return client.SetCallOption(pathKey{}, p)
+// Path spcecifies path option to client Call
+func Path(p string) options.Option {
+	return options.ContextOption(pathKey{}, p)
 }
 
 type bodyKey struct{}
 
-func Body(b string) client.CallOption {
-	return client.SetCallOption(bodyKey{}, b)
+// Body specifies body option to client Call
+func Body(b string) options.Option {
+	return options.ContextOption(bodyKey{}, b)
 }
 
 type errorMapKey struct{}
 
-func ErrorMap(m map[string]interface{}) client.CallOption {
-	return client.SetCallOption(errorMapKey{}, m)
+func ErrorMap(m map[string]interface{}) options.Option {
+	return options.ContextOption(errorMapKey{}, m)
+}
+
+type structTagsKey struct{}
+
+// StructTags pass tags slice option to client Call
+func StructTags(tags []string) options.Option {
+	return options.ContextOption(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)
 }

request.go

@@ -1,8 +1,9 @@
 package http
 
 import (
-	"github.com/unistack-org/micro/v3/client"
-	"github.com/unistack-org/micro/v3/codec"
+	"go.unistack.org/micro/v4/client"
+	"go.unistack.org/micro/v4/codec"
+	"go.unistack.org/micro/v4/options"
 )
 
 type httpRequest struct {
@@ -13,9 +14,8 @@ type httpRequest struct {
 	opts        client.RequestOptions
 }
 
-func newHTTPRequest(service, method string, request interface{}, contentType string, opts ...client.RequestOption) client.Request {
+func newHTTPRequest(service, method string, request interface{}, contentType string, opts ...options.Option) client.Request {
 	options := client.NewRequestOptions(opts...)
-
 	if len(options.ContentType) == 0 {
 		options.ContentType = contentType
 	}

stream.go

@@ -4,34 +4,34 @@ import (
 	"bufio"
 	"context"
 	"fmt"
+	"io"
 	"net"
 	"net/http"
 	"sync"
 
-	"github.com/unistack-org/micro/v3/client"
-	"github.com/unistack-org/micro/v3/codec"
-	"github.com/unistack-org/micro/v3/errors"
+	"go.unistack.org/micro/v4/client"
+	"go.unistack.org/micro/v4/codec"
+	"go.unistack.org/micro/v4/errors"
+	"go.unistack.org/micro/v4/logger"
 )
 
 // Implements the streamer interface
 type httpStream struct {
-	sync.RWMutex
-	address string
-	opts    client.CallOptions
-	codec   codec.Codec
-	context context.Context
-	header  http.Header
-	seq     uint64
-	closed  chan bool
 	err     error
 	conn    net.Conn
-	reader  *bufio.Reader
+	cf      codec.Codec
+	context context.Context
+	logger  logger.Logger
 	request client.Request
+	closed  chan bool
+	reader  *bufio.Reader
+	address string
+	ct      string
+	opts    client.CallOptions
+	sync.RWMutex
 }
 
-var (
-	errShutdown = fmt.Errorf("connection is shut down")
-)
+var errShutdown = fmt.Errorf("connection is shut down")
 
 func (h *httpStream) isClosed() bool {
 	select {
@@ -54,6 +54,10 @@ 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()
@@ -63,16 +67,18 @@ func (h *httpStream) Send(msg interface{}) error {
 		return errShutdown
 	}
 
-	hreq, err := newRequest(h.address, h.request, h.codec, msg, h.opts)
+	hreq, err := newRequest(h.context, h.logger, h.address, h.request, h.ct, h.cf, msg, h.opts)
 	if err != nil {
 		return err
 	}
 
-	hreq.Header = h.header
-
 	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()
@@ -88,7 +94,7 @@ func (h *httpStream) Recv(msg interface{}) error {
 	}
 	defer hrsp.Body.Close()
 
-	return parseRsp(h.context, hrsp, h.codec, msg, h.opts)
+	return h.parseRsp(h.context, h.logger, hrsp, h.cf, msg, h.opts)
 }
 
 func (h *httpStream) Error() error {
@@ -97,6 +103,10 @@ 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:
@@ -106,3 +116,60 @@ func (h *httpStream) Close() error {
 		return h.conn.Close()
 	}
 }
+
+func (h *httpStream) parseRsp(ctx context.Context, log logger.Logger, 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))
+		}
+
+		if hrsp.StatusCode < 400 {
+			if err = cf.Unmarshal(buf, 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 !ok || rerr == nil {
+			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}
+		}
+	}
+
+	return err
+}

util.go

@@ -1,35 +1,72 @@
 package http
 
 import (
+	"context"
 	"fmt"
+	"io"
 	"net/http"
+	"net/url"
 	"reflect"
 	"strings"
 	"sync"
 
-	rutil "github.com/unistack-org/micro/v3/util/reflect"
-	util "github.com/unistack-org/micro/v3/util/router"
+	"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"
 )
 
 var (
-	templateCache = make(map[string]util.Template)
+	templateCache = make(map[string][]string)
 	mu            sync.RWMutex
 )
 
-func newPathRequest(path string, method string, body string, msg interface{}) (string, interface{}, error) {
+// Error struct holds error
+type Error struct {
+	err interface{}
+}
+
+// Error func for error interface
+func (err *Error) Error() string {
+	return fmt.Sprintf("%v", err.err)
+}
+
+func GetError(err error) interface{} {
+	if rerr, ok := err.(*Error); ok {
+		return rerr.err
+	}
+	return err
+}
+
+func newPathRequest(path string, method string, body string, msg interface{}, tags []string, parameters map[string]map[string]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.Fields) == 0 {
-		return path, msg, nil
+	if len(tpl) > 0 && msg == nil {
+		return "", nil, fmt.Errorf("nil message but path params requested: %v", path)
 	}
 
-	fieldsmap := make(map[string]string, len(tpl.Fields))
-	for _, v := range tpl.Fields {
-		fieldsmap[v] = ""
+	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
+			}
+		}
 	}
 
 	nmsg, err := rutil.Zero(msg)
@@ -48,7 +85,7 @@ func newPathRequest(path string, method string, body string, msg interface{}) (s
 		tnmsg = tnmsg.Elem()
 	}
 
-	values := make(map[string]string)
+	values := url.Values{}
 	// copy cycle
 	for i := 0; i < tmsg.NumField(); i++ {
 		val := tmsg.Field(i)
@@ -56,52 +93,149 @@ func newPathRequest(path string, method string, body string, msg interface{}) (s
 			continue
 		}
 		fld := tmsg.Type().Field(i)
-		lfield := strings.ToLower(fld.Name)
-		if _, ok := fieldsmap[lfield]; ok {
-			fieldsmap[lfield] = fmt.Sprintf("%v", val.Interface())
-		} else if body == "*" || body == lfield && method != http.MethodGet {
-			tnmsg.Field(i).Set(val)
-		} else if method == http.MethodGet {
-			values[lfield] = fmt.Sprintf("%v", val.Interface())
+		// 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)
+			if !ok {
+				continue
+			}
+
+			tp := strings.Split(ts, ",")
+			// special
+			switch tn {
+			case "protobuf": // special
+				for _, p := range tp {
+					if idx := strings.Index(p, "name="); idx > 0 {
+						t = &tag{key: tn, name: p[idx:]}
+					}
+				}
+			default:
+				t = &tag{key: tn, name: tp[0]}
+			}
+			if t.name != "" {
+				break
+			}
+		}
+
+		cname := t.name
+		if cname == "" {
+			cname = fld.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
+		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)))
+				}
+				fieldsmapskip[t.name] = struct{}{}
+			default:
+				fieldsmap[t.name] = getParam(val)
+			}
+		} else if (body == "*" || body == t.name) && method != http.MethodGet {
+			if tnmsg.Field(i).CanSet() {
+				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)))
+				}
+			} else {
+				values.Add(t.name, getParam(val))
+			}
 		}
 	}
 
 	// check not filled stuff
 	for k, v := range fieldsmap {
-		if v == "" {
-			return "", nil, fmt.Errorf("path param %s not filled %s", k, v)
+		_, ok := fieldsmapskip[k]
+		if !ok && v == "" {
+			return "", nil, fmt.Errorf("path param %s not filled", k)
 		}
 	}
 
 	var b strings.Builder
-	for _, fld := range tpl.Pool {
+
+	for _, fld := range tpl {
 		_, _ = b.WriteRune('/')
-		if v, ok := fieldsmap[fld]; ok {
-			_, _ = b.WriteString(v)
-		} else {
+		// 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
+			}
+			// 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 {
 			_, _ = b.WriteString(fld)
 		}
 	}
 
-	if method == http.MethodGet {
-		idx := 0
-		for k, v := range values {
-			if idx == 0 {
-				_, _ = b.WriteRune('?')
-			} else {
-				_, _ = b.WriteRune('&')
-			}
-			_, _ = b.WriteString(k)
-			_, _ = b.WriteRune('=')
-			_, _ = b.WriteString(v)
-			idx++
-		}
+	if len(values) > 0 {
+		_, _ = b.WriteRune('?')
+		_, _ = b.WriteString(values.Encode())
+	}
+
+	if rutil.IsZero(nmsg) && !isEmptyStruct(nmsg) {
+		return b.String(), nil, nil
 	}
 
 	return b.String(), nmsg, nil
 }
 
-func newTemplate(path string) (util.Template, error) {
+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 /")
+	}
 	mu.RLock()
 	tpl, ok := templateCache[path]
 	if ok {
@@ -110,15 +244,121 @@ func newTemplate(path string) (util.Template, error) {
 	}
 	mu.RUnlock()
 
-	rule, err := util.Parse(path)
-	if err != nil {
-		return tpl, err
-	}
-
-	tpl = rule.Compile()
+	tpl = strings.Split(path[1:], "/")
 	mu.Lock()
 	templateCache[path] = tpl
 	mu.Unlock()
 
 	return tpl, nil
 }
+
+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:
+		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 {
+				return errors.InternalServerError("go.micro.client", err.Error())
+			}
+			return nil
+		}
+
+		// response with error
+		var rerr interface{}
+		errmap, ok := opts.Context.Value(errorMapKey{}).(map[string]interface{})
+		if ok && errmap != nil {
+			rerr, ok = errmap[fmt.Sprintf("%d", hrsp.StatusCode)]
+			if !ok {
+				rerr, ok = errmap["default"]
+			}
+		}
+
+		if !ok || rerr == nil {
+			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}
+		}
+
+	}
+
+	return err
+}
+
+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
+}

util_test.go

@@ -0,0 +1,131 @@
+package http
+
+import (
+	"net/url"
+	"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 TestNewPathRequest(t *testing.T) {
+	type Message struct {
+		Name string `json:"name"`
+		Val1 string `protobuf:"bytes,1,opt,name=val1,proto3" json:"val1"`
+		Val3 []string
+		Val2 int64
+	}
+
+	omsg := &Message{Name: "test_name", Val1: "test_val1", Val2: 100, Val3: []string{"slice"}}
+
+	for _, m := range []string{"POST", "PUT", "PATCH", "GET", "DELETE"} {
+		body := ""
+		path, nmsg, err := newPathRequest("/v1/test", m, body, omsg, []string{"protobuf", "json"}, nil)
+		if err != nil {
+			t.Fatal(err)
+		}
+		u, err := url.Parse(path)
+		if err != nil {
+			t.Fatal(err)
+		}
+		vals := u.Query()
+		if v, ok := vals["name"]; !ok || v[0] != "test_name" {
+			t.Fatalf("invalid path: %v nmsg: %v", path, nmsg)
+		}
+	}
+}
+
+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"`
+		Val1 string `protobuf:"bytes,1,opt,name=val1,proto3" json:"val1"`
+		Val3 []string
+		Val2 int64
+	}
+
+	omsg := &Message{Name: "test_name", Val1: "test_val1", Val2: 100, Val3: []string{"slice"}}
+
+	for _, m := range []string{"POST", "PUT", "PATCH", "GET", "DELETE"} {
+		body := ""
+		if m != "GET" {
+			body = "*"
+		}
+		path, nmsg, err := newPathRequest("/v1/test/{val1}", m, body, omsg, []string{"protobuf", "json"}, nil)
+		if err != nil {
+			t.Fatal(err)
+		}
+		u, err := url.Parse(path)
+		if err != nil {
+			t.Fatal(err)
+		}
+		if m != "GET" {
+			if _, ok := nmsg.(*Message); !ok {
+				t.Fatalf("invalid nmsg: %#+v\n", nmsg)
+			}
+			if nmsg.(*Message).Name != "test_name" {
+				t.Fatalf("invalid nmsg: %v nmsg: %v", path, nmsg)
+			}
+		} else {
+			vals := u.Query()
+			if v, ok := vals["val2"]; !ok || v[0] != "100" {
+				t.Fatalf("invalid path: %v nmsg: %v", path, nmsg)
+			}
+		}
+	}
+}