Merge pull request 'fix request/response md handling' (#112) from request-respone-md into master

Reviewed-on: #112

.github/workflows/autoapprove.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: approve
-        uses: hmarr/auto-approve-action@v2
+        uses: hmarr/auto-approve-action@v3
         if: github.actor == 'vtolstov' || github.actor == 'dependabot[bot]'
         id: approve
         with:

.github/workflows/build.yml

@@ -34,7 +34,7 @@ jobs:
       - name: checkout
         uses: actions/checkout@v3
       - name: lint
-        uses: golangci/golangci-lint-action@v3.2.0
+        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/dependabot-automerge.yml

@@ -15,7 +15,7 @@ jobs:
     steps:
       - name: metadata
         id: metadata
-        uses: dependabot/fetch-metadata@v1.3.1
+        uses: dependabot/fetch-metadata@v1.3.6
         with:
           github-token: "${{ secrets.TOKEN }}"
       - name: merge

.github/workflows/pr.yml

@@ -34,7 +34,7 @@ jobs:
       - name: checkout
         uses: actions/checkout@v3
       - name: lint
-        uses: golangci/golangci-lint-action@v3.2.0
+        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.

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/v3#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 "go.unistack.org/micro-client-http/v3"
+import "go.unistack.org/micro-client-http/v4"
 
 service := micro.NewService(
 	micro.Name("my.service"),

go.mod

@@ -1,8 +1,5 @@
-module go.unistack.org/micro-client-http/v3
+module go.unistack.org/micro-client-http/v4
 
-go 1.16
+go 1.19
 
-require (
-	github.com/google/gnostic v0.6.9 // indirect
-	go.unistack.org/micro/v3 v3.9.8
-)
+require go.unistack.org/micro/v4 v4.0.1

go.sum

@@ -1,169 +1,2 @@
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-golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20210510120138-977fb7262007/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20211216021012-1d35b9e2eb4e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
-golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
-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/text v0.3.5/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
-golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
-golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
-golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
-golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
-golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY=
-golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
-golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
-golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
-golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/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=
-google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
-google.golang.org/genproto v0.0.0-20200513103714-09dca8ec2884/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
-google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo=
-google.golang.org/genproto v0.0.0-20220107163113-42d7afdf6368/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc=
-google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
-google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
-google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY=
-google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
-google.golang.org/grpc v1.33.1/go.mod h1:fr5YgcSWrqhRRxogOsw7RzIpsmvOZ6IcH4kBYTpR3n0=
-google.golang.org/grpc v1.36.0/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
-google.golang.org/grpc v1.40.0/go.mod h1:ogyxbiOoUXAkP+4+xa6PZSE9DZgIHtSpzjDTB9KAK34=
-google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
-google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
-google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
-google.golang.org/protobuf v1.20.1-0.20200309200217-e05f789c0967/go.mod h1:A+miEFZTKqfCUM6K7xSMQL9OKL/b6hQv+e19PK+JZNE=
-google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo=
-google.golang.org/protobuf v1.22.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
-google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
-google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
-google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
-google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
-google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
-google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
-google.golang.org/protobuf v1.28.0 h1:w43yiav+6bVFTBQFZX0r7ipe9JQ1QsbMgHwbBziscLw=
-google.golang.org/protobuf v1.28.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
-gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
-gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.2.3/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
-gopkg.in/yaml.v3 v3.0.0-20200615113413-eeeca48fe776/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b h1:h8qDotaEPuJATrMmW04NCwg7v22aHH28wwpauUhK9Oo=
-gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/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=

http.go

@@ -1,5 +1,5 @@
 // Package http provides a http client
-package http // import "go.unistack.org/micro-client-http/v3"
+package http // import "go.unistack.org/micro-client-http/v4"
 
 import (
 	"bufio"
@@ -10,18 +10,17 @@ import (
 	"net"
 	"net/http"
 	"net/url"
-	"os"
 	"strings"
 	"sync"
 	"time"
 
-	"go.unistack.org/micro/v3/broker"
-	"go.unistack.org/micro/v3/client"
-	"go.unistack.org/micro/v3/codec"
-	"go.unistack.org/micro/v3/errors"
-	"go.unistack.org/micro/v3/metadata"
-	"go.unistack.org/micro/v3/selector"
-	rutil "go.unistack.org/micro/v3/util/reflect"
+	"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/selector"
+	rutil "go.unistack.org/micro/v4/util/reflect"
 )
 
 var DefaultContentType = "application/json"
@@ -40,7 +39,7 @@ type httpClient struct {
 	init bool
 }
 
-func newRequest(ctx context.Context, addr string, req client.Request, ct string, cf codec.Codec, msg interface{}, opts client.CallOptions) (*http.Request, error) {
+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"
@@ -146,6 +145,11 @@ func newRequest(ctx context.Context, addr string, req client.Request, ct string,
 	if opts.AuthToken != "" {
 		header.Set(metadata.HeaderAuthorization, opts.AuthToken)
 	}
+	if opts.RequestMetadata != nil {
+		for k, v := range opts.RequestMetadata {
+			header.Set(k, v)
+		}
+	}
 
 	if md, ok := metadata.FromOutgoingContext(ctx); ok {
 		for k, v := range md {
@@ -210,6 +214,10 @@ func newRequest(ctx context.Context, addr string, req client.Request, ct string,
 		hreq.AddCookie(cookie)
 	}
 
+	if log.V(logger.DebugLevel) {
+		log.Debugf(ctx, "request %s to %s with headers %v body %s", method, u.String(), hreq.Header, b)
+	}
+
 	return hreq, nil
 }
 
@@ -221,9 +229,9 @@ func (h *httpClient) call(ctx context.Context, addr string, req client.Request,
 
 	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(ctx, addr, req, ct, cf, req.Body(), opts)
+	hreq, err := newRequest(ctx, h.opts.Logger, addr, req, ct, cf, req.Body(), opts)
 	if err != nil {
 		return err
 	}
@@ -258,7 +266,7 @@ 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.InternalServerError("go.micro.client", err.Error())
+		return nil, errors.BadRequest("go.micro.client", err.Error())
 	}
 
 	cc, err := (h.httpcli.Transport).(*http.Transport).DialContext(ctx, "tcp", addr)
@@ -268,6 +276,7 @@ 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,
@@ -302,9 +311,6 @@ func (h *httpClient) Init(opts ...client.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
 	}
@@ -328,10 +334,6 @@ 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 ...client.RequestOption) client.Request {
 	return newHTTPRequest(service, method, req, h.opts.ContentType, opts...)
 }
@@ -608,71 +610,6 @@ func (h *httpClient) Stream(ctx context.Context, req client.Request, opts ...cli
 	return nil, grr
 }
 
-func (h *httpClient) BatchPublish(ctx context.Context, p []client.Message, opts ...client.PublishOption) error {
-	return h.publish(ctx, p, opts...)
-}
-
-func (h *httpClient) Publish(ctx context.Context, p client.Message, opts ...client.PublishOption) error {
-	return h.publish(ctx, []client.Message{p}, opts...)
-}
-
-func (h *httpClient) publish(ctx context.Context, ps []client.Message, opts ...client.PublishOption) error {
-	var body []byte
-
-	options := client.NewPublishOptions(opts...)
-
-	// get proxy
-	exchange := ""
-	if v, ok := os.LookupEnv("MICRO_PROXY"); ok {
-		exchange = v
-	}
-
-	omd, ok := metadata.FromOutgoingContext(ctx)
-	if !ok {
-		omd = metadata.New(2)
-	}
-
-	msgs := make([]*broker.Message, 0, len(ps))
-
-	for _, p := range ps {
-		md := metadata.Copy(omd)
-		md[metadata.HeaderContentType] = p.ContentType()
-
-		// passed in raw data
-		if d, ok := p.Payload().(*codec.Frame); ok {
-			body = d.Data
-		} else {
-			// use codec for payload
-			cf, err := h.newCodec(p.ContentType())
-			if err != nil {
-				return errors.InternalServerError("go.micro.client", err.Error())
-			}
-			// set the body
-			b, err := cf.Marshal(p.Payload())
-			if err != nil {
-				return errors.InternalServerError("go.micro.client", err.Error())
-			}
-			body = b
-		}
-
-		topic := p.Topic()
-		if len(exchange) > 0 {
-			topic = exchange
-		}
-
-		for k, v := range p.Metadata() {
-			md.Set(k, v)
-		}
-		md.Set(metadata.HeaderTopic, topic)
-		msgs = append(msgs, &broker.Message{Header: md, Body: body})
-	}
-
-	return h.opts.Broker.BatchPublish(ctx, msgs,
-		broker.PublishContext(ctx),
-		broker.PublishBodyOnly(options.BodyOnly),
-	)
-}
-
 func (h *httpClient) String() string {
 	return "http"
 }
@@ -692,11 +629,21 @@ func NewClient(opts ...client.Option) client.Client {
 		opts: options,
 	}
 
-	dialer, ok := options.Context.Value(httpDialerKey{}).(*net.Dialer)
-	if !ok {
-		dialer = &net.Dialer{
+	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)
 		}
 	}
 
@@ -706,7 +653,9 @@ func NewClient(opts ...client.Option) client.Client {
 		// TODO customTransport := http.DefaultTransport.(*http.Transport).Clone()
 		tr := &http.Transport{
 			Proxy: http.ProxyFromEnvironment,
-			DialContext:           dialer.DialContext,
+			DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
+				return dialer(ctx, addr)
+			},
 			ForceAttemptHTTP2:     true,
 			MaxConnsPerHost:       100,
 			MaxIdleConns:          20,

message.go

@@ -1,44 +0,0 @@
-package http
-
-import (
-	"go.unistack.org/micro/v3/client"
-	"go.unistack.org/micro/v3/metadata"
-)
-
-type httpMessage struct {
-	payload     interface{}
-	topic       string
-	contentType string
-	opts        client.MessageOptions
-}
-
-func newHTTPMessage(topic string, payload interface{}, contentType string, opts ...client.MessageOption) client.Message {
-	options := client.NewMessageOptions(opts...)
-
-	if len(options.ContentType) > 0 {
-		contentType = options.ContentType
-	}
-
-	return &httpMessage{
-		payload:     payload,
-		topic:       topic,
-		contentType: contentType,
-		opts:        options,
-	}
-}
-
-func (h *httpMessage) ContentType() string {
-	return h.contentType
-}
-
-func (h *httpMessage) Topic() string {
-	return h.topic
-}
-
-func (h *httpMessage) Payload() interface{} {
-	return h.payload
-}
-
-func (h *httpMessage) Metadata() metadata.Metadata {
-	return h.opts.Metadata
-}

options.go

@@ -4,8 +4,8 @@ import (
 	"net"
 	"net/http"
 
-	"go.unistack.org/micro/v3/client"
-	"go.unistack.org/micro/v3/metadata"
+	"go.unistack.org/micro/v4/client"
+	"go.unistack.org/micro/v4/metadata"
 )
 
 var (

request.go

@@ -1,8 +1,8 @@
 package http
 
 import (
-	"go.unistack.org/micro/v3/client"
-	"go.unistack.org/micro/v3/codec"
+	"go.unistack.org/micro/v4/client"
+	"go.unistack.org/micro/v4/codec"
 )
 
 type httpRequest struct {

stream.go

@@ -9,9 +9,10 @@ import (
 	"net/http"
 	"sync"
 
-	"go.unistack.org/micro/v3/client"
-	"go.unistack.org/micro/v3/codec"
-	"go.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
@@ -20,6 +21,7 @@ type httpStream struct {
 	conn    net.Conn
 	cf      codec.Codec
 	context context.Context
+	logger  logger.Logger
 	request client.Request
 	closed  chan bool
 	reader  *bufio.Reader
@@ -65,7 +67,7 @@ func (h *httpStream) Send(msg interface{}) error {
 		return errShutdown
 	}
 
-	hreq, err := newRequest(h.context, h.address, h.request, h.ct, h.cf, 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
 	}
@@ -92,7 +94,7 @@ func (h *httpStream) Recv(msg interface{}) error {
 	}
 	defer hrsp.Body.Close()
 
-	return h.parseRsp(h.context, hrsp, h.cf, msg, h.opts)
+	return h.parseRsp(h.context, h.logger, hrsp, h.cf, msg, h.opts)
 }
 
 func (h *httpStream) Error() error {
@@ -115,41 +117,57 @@ func (h *httpStream) Close() error {
 	}
 }
 
-func (h *httpStream) parseRsp(ctx context.Context, hrsp *http.Response, cf codec.Codec, rsp interface{}, opts client.CallOptions) error {
+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
 
-	select {
-	case <-ctx.Done():
-		err = ctx.Err()
-	default:
 	// 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.Errorf(ctx, "failed to read body: %v", err)
+				}
+				return errors.InternalServerError("go.micro.client", string(buf))
+			}
+		}
+
+		if log.V(logger.DebugLevel) {
+			log.Debugf(ctx, "response %s with %v", buf, hrsp.Header)
+		}
+
 		if hrsp.StatusCode < 400 {
-			if err = cf.ReadBody(hrsp.Body, rsp); err != nil {
+			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 err, ok = errmap[fmt.Sprintf("%d", hrsp.StatusCode)].(error); !ok {
-				err, ok = errmap["default"].(error)
+			if rerr, ok = errmap[fmt.Sprintf("%d", hrsp.StatusCode)].(error); !ok {
+				rerr, ok = errmap["default"].(error)
 			}
 		}
-		if !ok || err == nil {
-			buf, cerr := io.ReadAll(hrsp.Body)
-			if cerr != nil {
-				return errors.InternalServerError("go.micro.client", cerr.Error())
-			}
+		if !ok || rerr == nil {
 			return errors.New("go.micro.client", string(buf), int32(hrsp.StatusCode))
 		}
 
-		if cerr := cf.ReadBody(hrsp.Body, err); cerr != nil {
-			err = errors.InternalServerError("go.micro.client", cerr.Error())
+		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}
 		}
 	}
 

util.go

@@ -10,10 +10,11 @@ import (
 	"strings"
 	"sync"
 
-	"go.unistack.org/micro/v3/client"
-	"go.unistack.org/micro/v3/errors"
-	"go.unistack.org/micro/v3/logger"
-	rutil "go.unistack.org/micro/v3/util/reflect"
+	"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 (
@@ -245,39 +246,55 @@ 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
 		}
 
-		cf, cerr := h.newCodec(ct)
-		if hrsp.StatusCode >= 400 && cerr != nil {
-			var buf []byte
 		if hrsp.Body != nil {
 			buf, err = io.ReadAll(hrsp.Body)
-				if err != nil && h.opts.Logger.V(logger.ErrorLevel) {
+			if err != nil {
+				if h.opts.Logger.V(logger.ErrorLevel) {
 					h.opts.Logger.Errorf(ctx, "failed to read body: %v", 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.Debugf(ctx, "response with %v unknown content-type %s %s", hrsp.Header, ct, buf)
 			}
-			// response like text/plain or something else, return original error
-			return errors.New("go.micro.client", string(buf), int32(hrsp.StatusCode))
-		} else if cerr != nil {
 			return errors.InternalServerError("go.micro.client", cerr.Error())
 		}
 
+		if h.opts.Logger.V(logger.DebugLevel) {
+			h.opts.Logger.Debugf(ctx, "response %s with %v", buf, hrsp.Header)
+		}
+
 		// succeseful response
 		if hrsp.StatusCode < 400 {
-			if err = cf.ReadBody(hrsp.Body, rsp); err != nil {
+			if err = cf.Unmarshal(buf, rsp); err != nil {
 				return errors.InternalServerError("go.micro.client", err.Error())
 			}
 			return nil
@@ -294,14 +311,10 @@ 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.ReadBody(hrsp.Body, rerr); cerr != nil {
+		if cerr := cf.Unmarshal(buf, rerr); cerr != nil {
 			return errors.InternalServerError("go.micro.client", cerr.Error())
 		}