diff --git a/request/body.go b/request/body.go
index 1f47a6c..0e8bfc1 100644
--- a/request/body.go
+++ b/request/body.go
@@ -36,6 +36,29 @@ const (
 	contentTypeJson = "application/json"
 )
 
+type bds struct {
+	b []byte
+}
+
+func (b *bds) Retry() io.Reader {
+	var p = make([]byte, len(b.b), cap(b.b))
+	copy(p, b.b)
+	return bytes.NewBuffer(p)
+}
+
+type bdf struct {
+	f io.ReadSeeker
+	p int64
+}
+
+func (b *bdf) Retry() io.Reader {
+	if _, e := b.f.Seek(b.p, io.SeekStart); e != nil {
+		return nil
+	} else {
+		return b.f
+	}
+}
+
 func (r *request) BodyJson(body interface{}) error {
 	if p, e := json.Marshal(body); e != nil {
 		return e
@@ -44,23 +67,41 @@ func (r *request) BodyJson(body interface{}) error {
 	} else {
 		r.ContentType(contentTypeJson)
 		r.ContentLength(uint64(len(p)))
-		r._BodyReader(bytes.NewBuffer(p))
+		r._BodyReader(&bds{
+			b: p,
+		})
 	}
 
 	return nil
 }
 
-func (r *request) BodyReader(body io.Reader, contentType string) {
-	r._BodyReader(body)
+func (r *request) BodyReader(body io.Reader, contentType string) error {
+	if f, k := body.(io.ReadSeeker); k {
+		if p, e := f.Seek(0, io.SeekStart); e != nil {
+			return e
+		} else {
+			r._BodyReader(&bdf{
+				f: f,
+				p: p,
+			})
+		}
+	} else {
+		if p, e := io.ReadAll(body); e != nil {
+			return e
+		} else {
+			r._BodyReader(&bds{
+				b: p,
+			})
+		}
+	}
 
 	if contentType != "" {
 		r.ContentType(contentType)
 	}
+
+	return nil
 }
 
-func (r *request) _BodyReader(body io.Reader) {
-	r.s.Lock()
-	defer r.s.Unlock()
-
-	r.b = body
+func (r *request) _BodyReader(body BodyRetryer) {
+	r.bdr = body
 }
diff --git a/request/error.go b/request/error.go
index 0282d68..275d047 100644
--- a/request/error.go
+++ b/request/error.go
@@ -32,48 +32,91 @@ import (
 )
 
 type requestError struct {
-	c  int
-	s  string
-	se bool
-	b  *bytes.Buffer
-	be bool
-	e  error
+	code      int
+	status    string
+	statusErr bool
+	bufBody   *bytes.Buffer
+	bodyErr   bool
+	err       error
 }
 
 func (r *requestError) StatusCode() int {
-	return r.c
+	return r.code
 }
 
 func (r *requestError) Status() string {
-	return r.s
+	return r.status
 }
 
 func (r *requestError) Body() *bytes.Buffer {
-	return r.b
+	return r.bufBody
 }
 
 func (r *requestError) Error() error {
-	return r.e
+	return r.err
 }
 
 func (r *requestError) IsError() bool {
-	return r.se || r.be || r.e != nil
+	return r.statusErr || r.bodyErr || r.err != nil
 }
 
 func (r *requestError) IsStatusError() bool {
-	return r.se
+	return r.statusErr
 }
 
 func (r *requestError) IsBodyError() bool {
-	return r.be
+	return r.bodyErr
 }
 
 func (r *requestError) ParseBody(i interface{}) bool {
-	if r.b != nil && r.b.Len() > 0 {
-		if e := json.Unmarshal(r.b.Bytes(), i); e == nil {
+	if r.bufBody != nil && r.bufBody.Len() > 0 {
+		if e := json.Unmarshal(r.bufBody.Bytes(), i); e == nil {
 			return true
 		}
 	}
 
 	return false
 }
+
+func (r *request) newError() {
+	r.err.Store(&requestError{
+		code:      0,
+		status:    "",
+		statusErr: false,
+		bufBody:   bytes.NewBuffer(make([]byte, 0)),
+		bodyErr:   false,
+		err:       nil,
+	})
+}
+
+func (r *request) getError() *requestError {
+	if i := r.err.Load(); i != nil {
+		if v, k := i.(*requestError); k {
+			return v
+		}
+	}
+
+	return &requestError{
+		code:      0,
+		status:    "",
+		statusErr: false,
+		bufBody:   bytes.NewBuffer(make([]byte, 0)),
+		bodyErr:   false,
+		err:       nil,
+	}
+}
+
+func (r *request) setError(e *requestError) {
+	if e == nil {
+		e = &requestError{
+			code:      0,
+			status:    "",
+			statusErr: false,
+			bufBody:   bytes.NewBuffer(make([]byte, 0)),
+			bodyErr:   false,
+			err:       nil,
+		}
+	}
+
+	r.err.Store(e)
+}
diff --git a/request/header.go b/request/header.go
index a6ef304..19b4cf9 100644
--- a/request/header.go
+++ b/request/header.go
@@ -28,7 +28,7 @@ package request
 
 import (
 	"fmt"
-	"net/url"
+	"net/http"
 )
 
 func (r *request) ContentType(mime string) {
@@ -40,37 +40,64 @@ func (r *request) ContentLength(size uint64) {
 }
 
 func (r *request) CleanHeader() {
-	r.s.Lock()
-	defer r.s.Unlock()
+	var k = make([]any, 0)
 
-	r.h = make(url.Values)
+	r.hdr.Range(func(key, value any) bool {
+		k = append(k, key)
+		return true
+	})
+
+	for _, key := range k {
+		r.hdr.Delete(key)
+	}
 }
 
 func (r *request) DelHeader(key string) {
-	r.s.Lock()
-	defer r.s.Unlock()
-
-	r.h.Del(key)
+	r.hdr.Delete(key)
 }
 
 func (r *request) SetHeader(key, value string) {
-	r.s.Lock()
-	defer r.s.Unlock()
-
-	if len(r.h) < 1 {
-		r.h = make(url.Values)
-	}
-
-	r.h.Set(key, value)
+	r.hdr.Store(key, append(make([]string, 0), value))
 }
 
 func (r *request) AddHeader(key, value string) {
-	r.s.Lock()
-	defer r.s.Unlock()
-
-	if len(r.h) < 1 {
-		r.h = make(url.Values)
+	var val []string
+	if i, l := r.hdr.Load(key); i != nil && l {
+		if v, k := i.([]string); k && len(v) > 0 {
+			val = v
+		}
 	}
 
-	r.h.Add(key, value)
+	if len(val) < 1 {
+		val = make([]string, 0)
+	}
+
+	r.hdr.Store(key, append(val, value))
+}
+
+func (r *request) GetHeader(key string) []string {
+	if i, l := r.hdr.Load(key); i != nil && l {
+		if v, k := i.([]string); k && len(v) > 0 {
+			return v
+		}
+	}
+
+	return make([]string, 0)
+}
+
+func (r *request) httpHeader() http.Header {
+	var hdr = make(http.Header)
+
+	r.hdr.Range(func(key, value any) bool {
+		if u, k := key.(string); !k {
+			return true
+		} else if v, l := value.([]string); !l {
+			return true
+		} else {
+			hdr[u] = v
+			return true
+		}
+	})
+
+	return hdr
 }
diff --git a/request/interface.go b/request/interface.go
index 180953c..678c666 100644
--- a/request/interface.go
+++ b/request/interface.go
@@ -90,7 +90,11 @@ type Header interface {
 
 type Body interface {
 	BodyJson(body interface{}) error
-	BodyReader(body io.Reader, contentType string)
+	BodyReader(body io.Reader, contentType string) error
+}
+
+type BodyRetryer interface {
+	Retry() io.Reader
 }
 
 type Request interface {
@@ -121,23 +125,23 @@ type Request interface {
 
 func New(ctx libctx.FuncContext, opt *Options, cli libhtc.HttpClient) (Request, error) {
 	r := &request{
-		s: sync.Mutex{},
-		o: nil,
-		x: ctx,
-		l: nil,
-		u: nil,
-		h: make(url.Values),
-		p: make(url.Values),
-		b: bytes.NewBuffer(make([]byte, 0)),
-		m: http.MethodGet,
-		e: nil,
-		c: new(atomic.Value),
+		mux: sync.Mutex{},
+		opt: new(atomic.Value),
+		ctx: new(atomic.Value),
+		log: new(atomic.Value),
+		uri: nil,
+		hdr: sync.Map{},
+		prm: make(url.Values),
+		bdr: nil,
+		mth: http.MethodGet,
+		err: new(atomic.Value),
+		cli: new(atomic.Value),
 	}
 
 	if cli != nil {
-		r.c.Store(cli)
+		r.cli.Store(cli)
 	} else {
-		r.c.Store(libhtc.GetClient())
+		r.cli.Store(libhtc.GetClient())
 	}
 
 	if e := r.SetOption(opt); e != nil {
diff --git a/request/model.go b/request/model.go
index eb769a6..40e1e3d 100644
--- a/request/model.go
+++ b/request/model.go
@@ -28,14 +28,14 @@ package request
 
 import (
 	"context"
-	"io"
 	"net/url"
 	"sync"
 	"sync/atomic"
 
 	libctx "github.com/nabbar/golib/context"
-	libhtc "github.com/nabbar/golib/httpcli"
 	liblog "github.com/nabbar/golib/logger"
+
+	libhtc "github.com/nabbar/golib/httpcli"
 )
 
 const (
@@ -47,35 +47,43 @@ const (
 )
 
 type request struct {
-	s sync.Mutex
+	mux sync.Mutex
 
-	o *atomic.Value      // Options
-	x libctx.FuncContext // Context function
-	l liblog.FuncLog     // Default logger
-	u *url.URL           // endpoint url
-	h url.Values         // header values
-	p url.Values         // parameters values
-	b io.Reader          // body io reader
-	m string             // method
-	e *requestError      // Error pointer
-	c *atomic.Value      // libhtc HTTPClient
+	opt *atomic.Value // Options
+	ctx *atomic.Value // Context function: libctx.FuncContext
+	log *atomic.Value // Default logger : liblog.FuncLog
+	uri *url.URL      // endpoint url
+	hdr sync.Map      // header values
+	prm url.Values    // parameters values
+	bdr BodyRetryer   // body io reader
+	mth string        // method
+	err *atomic.Value // Error pointer: *requestError
+	cli *atomic.Value // libhtc HTTPClient
 }
 
 func (r *request) Clone() (Request, error) {
 	if n, e := r.New(); e != nil {
 		return nil, e
 	} else {
-		r.s.Lock()
-		defer r.s.Unlock()
-
 		n.CleanHeader()
-		for k := range r.h {
-			n.SetHeader(k, r.h.Get(k))
-		}
+
+		r.hdr.Range(func(key, value any) bool {
+			if u, l := key.(string); !l {
+				return true
+			} else if v, k := value.([]string); !k {
+				return true
+			} else {
+				for _, w := range v {
+					n.AddHeader(u, w)
+				}
+			}
+
+			return true
+		})
 
 		n.CleanParams()
-		for k := range r.p {
-			n.SetParams(k, r.p.Get(k))
+		for k := range r.prm {
+			n.SetParams(k, r.prm.Get(k))
 		}
 
 		return n, nil
@@ -83,9 +91,6 @@ func (r *request) Clone() (Request, error) {
 }
 
 func (r *request) New() (Request, error) {
-	r.s.Lock()
-	defer r.s.Unlock()
-
 	var (
 		n *request
 		c = r.options()
@@ -95,66 +100,103 @@ func (r *request) New() (Request, error) {
 		c = &Options{}
 	}
 
-	if i, e := New(r.x, c, r.client()); e != nil {
+	if i, e := New(r.getFuncContext(), c, r.client()); e != nil {
 		return nil, e
 	} else {
 		n = i.(*request)
 	}
 
-	if r.u != nil {
-		n.u = &url.URL{
-			Scheme:      r.u.Scheme,
-			Opaque:      r.u.Opaque,
-			User:        r.u.User,
-			Host:        r.u.Host,
-			Path:        r.u.Path,
-			RawPath:     r.u.RawPath,
-			ForceQuery:  r.u.ForceQuery,
-			RawQuery:    r.u.RawQuery,
-			Fragment:    r.u.Fragment,
-			RawFragment: r.u.RawFragment,
+	if r.uri != nil {
+		n.uri = &url.URL{
+			Scheme:      r.uri.Scheme,
+			Opaque:      r.uri.Opaque,
+			User:        r.uri.User,
+			Host:        r.uri.Host,
+			Path:        r.uri.Path,
+			RawPath:     r.uri.RawPath,
+			ForceQuery:  r.uri.ForceQuery,
+			RawQuery:    r.uri.RawQuery,
+			Fragment:    r.uri.Fragment,
+			RawFragment: r.uri.RawFragment,
 		}
 	}
 
-	if r.l != nil {
-		n.l = r.l
+	if r.log != nil {
+		n.log = r.log
 	}
 
 	return n, nil
 }
 
-func (r *request) context() context.Context {
-	if r.x != nil {
-		if x := r.x(); x != nil {
-			return x
+func (r *request) RegisterDefaultLogger(fct liblog.FuncLog) {
+	if fct == nil {
+		fct = func() liblog.Logger {
+			return nil
 		}
 	}
 
-	return context.Background()
+	r.log.Store(fct)
+}
+
+func (r *request) _getDefaultLogger() liblog.Logger {
+	if i := r.log.Load(); i == nil {
+		return nil
+	} else if v, k := i.(liblog.FuncLog); !k {
+		return nil
+	} else {
+		return v()
+	}
+}
+
+func (r *request) RegisterContext(fct libctx.FuncContext) {
+	if fct == nil {
+		fct = context.Background
+	}
+
+	r.ctx.Store(fct)
+}
+
+func (r *request) getFuncContext() libctx.FuncContext {
+	if i := r.ctx.Load(); i == nil {
+		return nil
+	} else if v, k := i.(libctx.FuncContext); !k {
+		return nil
+	} else {
+		return v
+	}
+}
+
+func (r *request) context() context.Context {
+	if f := r.getFuncContext(); f == nil {
+		return context.Background()
+	} else {
+		return f()
+	}
+}
+
+func (r *request) RegisterHTTPClient(cli libhtc.HttpClient) {
+	if cli == nil {
+		cli = libhtc.GetClient()
+	}
+
+	r.cli.Store(cli)
 }
 
 func (r *request) client() libhtc.HttpClient {
-	if i := r.c.Load(); i != nil {
+	if i := r.cli.Load(); i != nil {
 		if c, k := i.(libhtc.HttpClient); k {
 			return c
 		}
 	}
 
-	c := libhtc.GetClient()
-	r.c.Store(c)
-	return c
+	return libhtc.GetClient()
 }
 
 func (r *request) Error() Error {
-	r.s.Lock()
-	defer r.s.Unlock()
-
-	return r.e
+	return r.getError()
 }
 
 func (r *request) IsError() bool {
-	r.s.Lock()
-	defer r.s.Unlock()
-
-	return r.e != nil && r.e.IsError()
+	err := r.getError()
+	return err.IsError()
 }
diff --git a/request/monitor.go b/request/monitor.go
index 9e42beb..8b07370 100644
--- a/request/monitor.go
+++ b/request/monitor.go
@@ -51,6 +51,7 @@ func (r *request) HealthCheck(ctx context.Context) error {
 	var (
 		opts = r.GetOption()
 		ednp = r.GetFullUrl()
+		head = make(http.Header)
 		ent  logent.Entry
 	)
 
@@ -58,14 +59,6 @@ func (r *request) HealthCheck(ctx context.Context) error {
 		ent = log.Entry(loglvl.ErrorLevel, "healthcheck")
 	}
 
-	r.s.Lock()
-	defer r.s.Unlock()
-
-	head := make(url.Values, 0)
-	if v := r.h.Get(_Authorization); v != "" {
-		head.Set(_Authorization, v)
-	}
-
 	if !opts.Health.Enable {
 		return nil
 	}
@@ -95,7 +88,7 @@ func (r *request) HealthCheck(ctx context.Context) error {
 		ent.FieldAdd("method", http.MethodGet)
 	}
 
-	req, err = r._MakeRequest(ctx, ednp, http.MethodGet, nil, head, nil)
+	req, err = r.makeRequest(ctx, ednp, http.MethodGet, nil, head, nil)
 
 	if err != nil {
 		if ent != nil {
@@ -113,7 +106,7 @@ func (r *request) HealthCheck(ctx context.Context) error {
 		return err
 	}
 
-	if buf, err = r._CheckResponse(rsp); err != nil {
+	if buf, err = r.checkResponse(rsp); err != nil {
 		if ent != nil {
 			ent.ErrorAdd(true, err).Check(loglvl.NilLevel)
 		}
@@ -121,7 +114,7 @@ func (r *request) HealthCheck(ctx context.Context) error {
 	}
 
 	if len(opts.Health.Result.ValidHTTPCode) > 0 {
-		if !r._IsValidCode(opts.Health.Result.ValidHTTPCode, rsp.StatusCode) {
+		if !r.isValidCode(opts.Health.Result.ValidHTTPCode, rsp.StatusCode) {
 			err = ErrorResponseStatus.Error(fmt.Errorf("status: %s", rsp.Status))
 			if ent != nil {
 				ent.ErrorAdd(true, err).Check(loglvl.NilLevel)
@@ -129,7 +122,7 @@ func (r *request) HealthCheck(ctx context.Context) error {
 			return err
 		}
 	} else if len(opts.Health.Result.InvalidHTTPCode) > 0 {
-		if r._IsValidCode(opts.Health.Result.InvalidHTTPCode, rsp.StatusCode) {
+		if r.isValidCode(opts.Health.Result.InvalidHTTPCode, rsp.StatusCode) {
 			err = ErrorResponseStatus.Error(fmt.Errorf("status: %s", rsp.Status))
 			if ent != nil {
 				ent.ErrorAdd(true, err).Check(loglvl.NilLevel)
@@ -139,7 +132,7 @@ func (r *request) HealthCheck(ctx context.Context) error {
 	}
 
 	if len(opts.Health.Result.Contain) > 0 {
-		if !r._IsValidContents(opts.Health.Result.Contain, buf) {
+		if !r.isValidContents(opts.Health.Result.Contain, buf) {
 			err = ErrorResponseContainsNotFound.Error(nil)
 			if ent != nil {
 				ent.ErrorAdd(true, err).Check(loglvl.NilLevel)
@@ -147,7 +140,7 @@ func (r *request) HealthCheck(ctx context.Context) error {
 			return err
 		}
 	} else if len(opts.Health.Result.NotContain) > 0 {
-		if r._IsValidContents(opts.Health.Result.NotContain, buf) {
+		if r.isValidContents(opts.Health.Result.NotContain, buf) {
 			err = ErrorResponseNotContainsFound.Error(nil)
 			if ent != nil {
 				ent.ErrorAdd(true, err).Check(loglvl.NilLevel)
@@ -192,7 +185,7 @@ func (r *request) Monitor(ctx context.Context, vrs libver.Version) (montps.Monit
 		})
 	}
 
-	if mon, e = libmon.New(r.x, inf); e != nil {
+	if mon, e = libmon.New(r.getFuncContext(), inf); e != nil {
 		return nil, e
 	} else if mon == nil {
 		return nil, nil
@@ -200,7 +193,7 @@ func (r *request) Monitor(ctx context.Context, vrs libver.Version) (montps.Monit
 
 	mon.RegisterLoggerDefault(r._getDefaultLogger)
 
-	if e = mon.SetConfig(r.x, opt.Health.Monitor); e != nil {
+	if e = mon.SetConfig(r.getFuncContext(), opt.Health.Monitor); e != nil {
 		return nil, e
 	}
 
diff --git a/request/options.go b/request/options.go
index 861feb1..a3ccafe 100644
--- a/request/options.go
+++ b/request/options.go
@@ -28,7 +28,6 @@ package request
 
 import (
 	"fmt"
-	"sync/atomic"
 
 	libval "github.com/go-playground/validator/v10"
 	libtls "github.com/nabbar/golib/certificates"
@@ -187,9 +186,9 @@ func (o *Options) Update(ctx libctx.FuncContext, req Request) (Request, error) {
 }
 
 func (r *request) options() *Options {
-	if r.o == nil {
+	if r.opt == nil {
 		return nil
-	} else if i := r.o.Load(); i == nil {
+	} else if i := r.opt.Load(); i == nil {
 		return nil
 	} else if o, ok := i.(*Options); !ok {
 		return nil
@@ -199,8 +198,6 @@ func (r *request) options() *Options {
 }
 
 func (r *request) GetOption() *Options {
-	r.s.Lock()
-	defer r.s.Unlock()
 	return r.options()
 }
 
@@ -215,42 +212,10 @@ func (r *request) SetOption(opt *Options) error {
 		r.AuthBearer(opt.Auth.Bearer.Token)
 	}
 
-	r.s.Lock()
-	defer r.s.Unlock()
-
-	if r.o == nil {
-		r.o = new(atomic.Value)
-	}
-
-	r.o.Store(opt)
+	r.opt.Store(opt)
 	return nil
 }
 
-func (r *request) RegisterHTTPClient(cli libhtc.HttpClient) {
-	if cli == nil {
-		return
-	}
-	r.c.Store(cli)
-}
-
-func (r *request) RegisterDefaultLogger(fct liblog.FuncLog) {
-	r.s.Lock()
-	defer r.s.Unlock()
-
-	r.l = fct
-}
-
-func (r *request) _getDefaultLogger() liblog.Logger {
-	r.s.Lock()
-	defer r.s.Unlock()
-
-	if r.l == nil {
-		return nil
-	} else {
-		return r.l()
-	}
-}
-
 func (r *request) defaultTLS() libtls.TLSConfig {
 	if cfg := r.options(); cfg != nil {
 		return cfg.defaultTLS()
@@ -258,10 +223,3 @@ func (r *request) defaultTLS() libtls.TLSConfig {
 
 	return nil
 }
-
-func (r *request) RegisterContext(fct libctx.FuncContext) {
-	r.s.Lock()
-	defer r.s.Unlock()
-
-	r.x = fct
-}
diff --git a/request/params.go b/request/params.go
index 0db25bc..fdeb740 100644
--- a/request/params.go
+++ b/request/params.go
@@ -29,51 +29,48 @@ package request
 import "net/url"
 
 func (r *request) CleanParams() {
-	r.s.Lock()
-	defer r.s.Unlock()
-
-	r.p = make(url.Values)
+	r.prm = make(url.Values)
 }
 
 func (r *request) DelParams(key string) {
-	r.s.Lock()
-	defer r.s.Unlock()
+	r.mux.Lock()
+	defer r.mux.Unlock()
 
-	r.p.Del(key)
+	r.prm.Del(key)
 }
 
 func (r *request) SetParams(key, val string) {
-	r.s.Lock()
-	defer r.s.Unlock()
+	r.mux.Lock()
+	defer r.mux.Unlock()
 
-	if len(r.p) < 1 {
-		r.p = make(url.Values)
+	if len(r.prm) < 1 {
+		r.prm = make(url.Values)
 	}
 
-	r.p.Set(key, val)
+	r.prm.Set(key, val)
 }
 
 func (r *request) AddParams(key, val string) {
-	r.s.Lock()
-	defer r.s.Unlock()
+	r.mux.Lock()
+	defer r.mux.Unlock()
 
-	if len(r.p) < 1 {
-		r.p = make(url.Values)
+	if len(r.prm) < 1 {
+		r.prm = make(url.Values)
 	}
 
-	r.p.Set(key, val)
+	r.prm.Set(key, val)
 }
 
 func (r *request) GetFullUrl() *url.URL {
-	r.s.Lock()
-	defer r.s.Unlock()
+	r.mux.Lock()
+	defer r.mux.Unlock()
 
-	return r.u
+	return r.uri
 }
 
 func (r *request) SetFullUrl(u *url.URL) {
-	r.s.Lock()
-	defer r.s.Unlock()
+	r.mux.Lock()
+	defer r.mux.Unlock()
 
-	r.u = u
+	r.uri = u
 }
diff --git a/request/request.go b/request/request.go
index a5a0854..c507bd7 100644
--- a/request/request.go
+++ b/request/request.go
@@ -38,23 +38,23 @@ import (
 	liberr "github.com/nabbar/golib/errors"
 )
 
-func (r *request) _MakeRequest(ctx context.Context, u *url.URL, mtd string, body io.Reader, head url.Values, params url.Values) (*http.Request, error) {
+func (r *request) makeRequest(ctx context.Context, u *url.URL, mtd string, body BodyRetryer, head http.Header, params url.Values) (*http.Request, error) {
 	var (
 		req *http.Request
 		err error
 	)
 
-	req, err = http.NewRequestWithContext(ctx, mtd, u.String(), body)
+	if body != nil {
+		req, err = http.NewRequestWithContext(ctx, mtd, u.String(), body.Retry())
+	} else {
+		req, err = http.NewRequestWithContext(ctx, mtd, u.String(), nil)
+	}
 
 	if err != nil {
 		return nil, ErrorCreateRequest.Error(err)
 	}
 
-	if len(head) > 0 {
-		for k := range head {
-			req.Header.Set(k, head.Get(k))
-		}
-	}
+	req.Header = head
 
 	if len(params) > 0 {
 		q := req.URL.Query()
@@ -67,7 +67,7 @@ func (r *request) _MakeRequest(ctx context.Context, u *url.URL, mtd string, body
 	return req, nil
 }
 
-func (r *request) _CheckResponse(rsp *http.Response, validStatus ...int) (*bytes.Buffer, error) {
+func (r *request) checkResponse(rsp *http.Response, validStatus ...int) (*bytes.Buffer, error) {
 	var (
 		e error
 		b = bytes.NewBuffer(make([]byte, 0))
@@ -89,14 +89,14 @@ func (r *request) _CheckResponse(rsp *http.Response, validStatus ...int) (*bytes
 		}
 	}
 
-	if !r._IsValidCode(validStatus, rsp.StatusCode) {
+	if !r.isValidCode(validStatus, rsp.StatusCode) {
 		return b, ErrorResponseStatus.Error(nil)
 	}
 
 	return b, nil
 }
 
-func (r *request) _IsValidCode(listValid []int, statusCode int) bool {
+func (r *request) isValidCode(listValid []int, statusCode int) bool {
 	if len(listValid) < 1 {
 		return true
 	}
@@ -110,7 +110,7 @@ func (r *request) _IsValidCode(listValid []int, statusCode int) bool {
 	return false
 }
 
-func (r *request) _IsValidContents(contains []string, buf *bytes.Buffer) bool {
+func (r *request) isValidContents(contains []string, buf *bytes.Buffer) bool {
 	if len(contains) < 1 {
 		return true
 	} else if buf.Len() < 1 {
@@ -127,39 +127,37 @@ func (r *request) _IsValidContents(contains []string, buf *bytes.Buffer) bool {
 }
 
 func (r *request) Do() (*http.Response, error) {
-	r.s.Lock()
-	defer r.s.Unlock()
+	r.mux.Lock()
+	defer r.mux.Unlock()
 
-	if r.m == "" || r.u == nil || r.u.String() == "" {
+	if r.mth == "" || r.uri == nil || r.uri.String() == "" {
 		return nil, ErrorParamInvalid.Error(nil)
 	}
 
 	var (
 		e   error
 		req *http.Request
+		rer *requestError
 		rsp *http.Response
 		err error
 	)
 
-	r.e = &requestError{
-		c:  0,
-		s:  "",
-		se: false,
-		b:  bytes.NewBuffer(make([]byte, 0)),
-		be: false,
-		e:  nil,
-	}
+	r.newError()
+	rer = r.getError()
+
+	req, err = r.makeRequest(r.context(), r.uri, r.mth, r.bdr, r.httpHeader(), r.prm)
 
-	req, err = r._MakeRequest(r.context(), r.u, r.m, r.b, r.h, r.p)
 	if err != nil {
-		r.e.e = err
-		return nil, err
+		rer.err = err
+		r.setError(rer)
+		return nil, ErrorCreateRequest.Error(err)
 	}
 
 	rsp, e = r.client().Do(req)
 
 	if e != nil {
-		r.e.e = e
+		rer.err = e
+		r.setError(rer)
 		return nil, ErrorSendRequest.Error(e)
 	}
 
@@ -173,40 +171,35 @@ func (r *request) DoParse(model interface{}, validStatus ...int) error {
 
 		err error
 		rsp *http.Response
+		rer *requestError
 	)
 
-	r.e = &requestError{
-		c:  0,
-		s:  "",
-		se: false,
-		b:  bytes.NewBuffer(make([]byte, 0)),
-		be: false,
-		e:  nil,
-	}
-
 	if rsp, err = r.Do(); err != nil {
 		return err
 	} else if rsp == nil {
 		return ErrorResponseInvalid.Error(nil)
 	} else {
-		r.e.c = rsp.StatusCode
-		r.e.s = rsp.Status
+		rer = r.getError()
+		rer.code = rsp.StatusCode
+		rer.status = rsp.Status
 	}
 
-	b, err = r._CheckResponse(rsp, validStatus...)
-	r.e.b = b
+	b, err = r.checkResponse(rsp, validStatus...)
+	rer.bufBody = b
 
 	if er := liberr.Get(err); er != nil && er.HasCode(ErrorResponseStatus) {
-		r.e.se = true
+		rer.statusErr = true
 	} else if err != nil {
-		r.e.e = err
+		rer.err = err
+		r.setError(rer)
 		return err
 	}
 
 	if b.Len() > 0 {
 		if e = json.Unmarshal(b.Bytes(), model); e != nil {
-			r.e.be = true
-			r.e.e = e
+			rer.bodyErr = true
+			rer.err = e
+			r.setError(rer)
 			return ErrorResponseUnmarshall.Error(e)
 		}
 	}
diff --git a/request/url.go b/request/url.go
index cf748b0..bb724f4 100644
--- a/request/url.go
+++ b/request/url.go
@@ -37,45 +37,45 @@ func (r *request) SetEndpoint(u string) error {
 	if uri, err := url.Parse(u); err != nil {
 		return err
 	} else {
-		r.s.Lock()
-		defer r.s.Unlock()
+		r.mux.Lock()
+		defer r.mux.Unlock()
 
-		r.u = uri
+		r.uri = uri
 		return nil
 	}
 }
 
 func (r *request) GetEndpoint() string {
-	r.s.Lock()
-	defer r.s.Unlock()
+	r.mux.Lock()
+	defer r.mux.Unlock()
 
-	return r.u.String()
+	return r.uri.String()
 }
 
 func (r *request) SetPath(raw bool, path string) {
-	r.s.Lock()
-	defer r.s.Unlock()
+	r.mux.Lock()
+	defer r.mux.Unlock()
 
 	if raw {
-		r.u.RawPath = path
+		r.uri.RawPath = path
 	} else {
-		r.u.Path = path
+		r.uri.Path = path
 	}
 }
 
 func (r *request) AddPath(raw bool, pathPart ...string) {
-	r.s.Lock()
-	defer r.s.Unlock()
+	r.mux.Lock()
+	defer r.mux.Unlock()
 
-	if r.u == nil {
+	if r.uri == nil {
 		return
 	}
 
 	var str string
 	if raw {
-		str = path.Clean(r.u.RawPath)
+		str = path.Clean(r.uri.RawPath)
 	} else {
-		str = path.Clean(r.u.Path)
+		str = path.Clean(r.uri.Path)
 	}
 
 	for i := range pathPart {
@@ -91,47 +91,47 @@ func (r *request) AddPath(raw bool, pathPart ...string) {
 	}
 
 	if raw {
-		r.u.RawPath = path.Clean(str)
+		r.uri.RawPath = path.Clean(str)
 	} else {
-		r.u.Path = path.Clean(str)
+		r.uri.Path = path.Clean(str)
 	}
 }
 
 func (r *request) SetMethod(method string) {
-	r.s.Lock()
-	defer r.s.Unlock()
+	r.mux.Lock()
+	defer r.mux.Unlock()
 
 	switch strings.ToUpper(method) {
 	case http.MethodGet:
-		r.m = http.MethodGet
+		r.mth = http.MethodGet
 	case http.MethodHead:
-		r.m = http.MethodHead
+		r.mth = http.MethodHead
 	case http.MethodPost:
-		r.m = http.MethodPost
+		r.mth = http.MethodPost
 	case http.MethodPut:
-		r.m = http.MethodPut
+		r.mth = http.MethodPut
 	case http.MethodPatch:
-		r.m = http.MethodPatch
+		r.mth = http.MethodPatch
 	case http.MethodDelete:
-		r.m = http.MethodDelete
+		r.mth = http.MethodDelete
 	case http.MethodConnect:
-		r.m = http.MethodConnect
+		r.mth = http.MethodConnect
 	case http.MethodOptions:
-		r.m = http.MethodOptions
+		r.mth = http.MethodOptions
 	case http.MethodTrace:
-		r.m = http.MethodTrace
+		r.mth = http.MethodTrace
 	default:
-		r.m = strings.ToUpper(method)
+		r.mth = strings.ToUpper(method)
 	}
 
-	if r.m == "" {
-		r.m = http.MethodGet
+	if r.mth == "" {
+		r.mth = http.MethodGet
 	}
 }
 
 func (r *request) GetMethod() string {
-	r.s.Lock()
-	defer r.s.Unlock()
+	r.mux.Lock()
+	defer r.mux.Unlock()
 
-	return r.m
+	return r.mth
 }