use metadata header names

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

go.mod

@@ -2,4 +2,4 @@ module github.com/unistack-org/micro-client-http/v3
 
 go 1.16
 
-require github.com/unistack-org/micro/v3 v3.4.8
+require github.com/unistack-org/micro/v3 v3.5.2

go.sum

@@ -1,12 +1,12 @@
 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/google/uuid v1.3.0 h1:t6JiXgmwXMjEs8VusXIJk2BXHsn+wx8BZdTaoZ5fu7I=
+github.com/google/uuid v1.3.0/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=
+github.com/unistack-org/micro/v3 v3.5.2 h1:8b9Mk4FLWRLp8SduBh5Xs6g/3xJ+ZIBOnH82eHuLWnw=
+github.com/unistack-org/micro/v3 v3.5.2/go.mod h1:1ZkwpEqpiHiVhM2hiF9DamtpsF04oFybFhEQ4zEMcro=
 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=

http.go

@@ -85,22 +85,22 @@ func newRequest(ctx context.Context, addr string, req client.Request, ct string,
 
 	u, err = u.Parse(path)
 	if err != nil {
-		return nil, errors.BadRequest("go.micro.client_v", err.Error())
+		return nil, errors.BadRequest("go.micro.client", err.Error())
 	}
 
 	path, nmsg, err := newPathRequest(u.Path, method, body, msg, tags)
 	if err != nil {
-		return nil, errors.BadRequest("go.micro.client_a", err.Error())
+		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_t", err.Error())
+		return nil, errors.BadRequest("go.micro.client", err.Error())
 	}
 
 	b, err := cf.Marshal(nmsg)
 	if err != nil {
-		return nil, errors.BadRequest("go.micro.client_e", err.Error())
+		return nil, errors.BadRequest("go.micro.client", err.Error())
 	}
 
 	var hreq *http.Request
@@ -112,7 +112,7 @@ func newRequest(ctx context.Context, addr string, req client.Request, ct string,
 	}
 
 	if err != nil {
-		return nil, errors.BadRequest("go.micro.client_k", err.Error())
+		return nil, errors.BadRequest("go.micro.client", err.Error())
 	}
 
 	header := make(http.Header)
@@ -126,7 +126,7 @@ func newRequest(ctx context.Context, addr string, req client.Request, ct string,
 	}
 
 	if opts.AuthToken != "" {
-		hreq.Header.Set("Authorization", opts.AuthToken)
+		hreq.Header.Set(metadata.HeaderAuthorization, opts.AuthToken)
 	}
 
 	if md, ok := metadata.FromOutgoingContext(ctx); ok {
@@ -137,14 +137,14 @@ func newRequest(ctx context.Context, addr string, req client.Request, ct string,
 
 	// set timeout in nanoseconds
 	if opts.StreamTimeout > time.Duration(0) {
-		hreq.Header.Set("Timeout", fmt.Sprintf("%d", opts.StreamTimeout))
+		hreq.Header.Set(metadata.HeaderTimeout, fmt.Sprintf("%d", opts.StreamTimeout))
 	}
 	if opts.RequestTimeout > time.Duration(0) {
-		hreq.Header.Set("Timeout", fmt.Sprintf("%d", opts.RequestTimeout))
+		hreq.Header.Set(metadata.HeaderTimeout, fmt.Sprintf("%d", opts.RequestTimeout))
 	}
 
 	// set the content type for the request
-	hreq.Header.Set("Content-Type", ct)
+	hreq.Header.Set(metadata.HeaderContentType, ct)
 
 	return hreq, nil
 }
@@ -539,8 +539,8 @@ func (h *httpClient) Publish(ctx context.Context, p client.Message, opts ...clie
 	if !ok {
 		md = metadata.New(2)
 	}
-	md["Content-Type"] = p.ContentType()
-	md["Micro-Topic"] = p.Topic()
+	md[metadata.HeaderContentType] = p.ContentType()
+	md[metadata.HeaderTopic] = p.Topic()
 
 	cf, err := h.newCodec(p.ContentType())
 	if err != nil {

util.go

@@ -12,6 +12,7 @@ import (
 
 	"github.com/unistack-org/micro/v3/client"
 	"github.com/unistack-org/micro/v3/errors"
+	"github.com/unistack-org/micro/v3/logger"
 	rutil "github.com/unistack-org/micro/v3/util/reflect"
 	util "github.com/unistack-org/micro/v3/util/router"
 )
@@ -113,7 +114,7 @@ func newPathRequest(path string, method string, body string, msg interface{}, ta
 			continue
 		}
 
-		// nolint: gocritic
+		// nolint: gocritic, nestif
 		if _, ok := fieldsmap[t.name]; ok {
 			switch val.Type().Kind() {
 			case reflect.Slice:
@@ -124,8 +125,10 @@ func newPathRequest(path string, method string, body string, msg interface{}, ta
 			default:
 				fieldsmap[t.name] = fmt.Sprintf("%v", val.Interface())
 			}
-		} else if (body == "*" || body == t.name) && method != http.MethodGet && tnmsg.Field(i).CanSet() {
+		} 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++ {
@@ -209,7 +212,17 @@ func (h *httpClient) parseRsp(ctx context.Context, hrsp *http.Response, rsp inte
 		}
 
 		cf, cerr := h.newCodec(ct)
-		if cerr != nil {
+		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) {
+					h.opts.Logger.Errorf(ctx, "failed to read body: %v", err)
+				}
+			}
+			// 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())
 		}