diff --git a/README.md b/README.md
index 89483b9..4f95e5e 100644
--- a/README.md
+++ b/README.md
@@ -26,7 +26,7 @@ func GetRepoInfo(user, repo string) (GithubRepoInfo, error) {
   call := withttp.NewCall[GithubRepoInfo](withttp.WithFasthttp()).
     WithURL(fmt.Sprintf("https://api.github.com/repos/%s/%s", user, repo)).
     WithMethod(http.MethodGet).
-    WithHeader("User-Agent", "withttp/0.1.0 See https://github.com/sonirico/withttp", false).
+    WithHeader("User-Agent", "withttp/0.5.1 See https://github.com/sonirico/withttp", false).
     WithParseJSON().
     WithExpectedStatusCodes(http.StatusOK)
 
@@ -186,7 +186,7 @@ func GetRepoInfo(user, repo string) (GithubRepoInfo, error) {
   call := withttp.NewCall[GithubRepoInfo](withttp.WithFasthttp()).
     WithURI(fmt.Sprintf("repos/%s/%s", user, repo)).
     WithMethod(http.MethodGet).
-    WithHeader("User-Agent", "withttp/0.1.0 See https://github.com/sonirico/withttp", false).
+    WithHeader("User-Agent", "withttp/0.5.1 See https://github.com/sonirico/withttp", false).
     WithHeaderFunc(func() (key, value string, override bool) {
       key = "X-Date"
       value = time.Now().String()
@@ -283,7 +283,7 @@ func main() {
   call := withttp.NewCall[Order](withttp.WithFasthttp()).
     WithURL("https://github.com/").
     WithMethod(http.MethodGet).
-    WithHeader("User-Agent", "withttp/0.1.0 See https://github.com/sonirico/withttp", false).
+    WithHeader("User-Agent", "withttp/0.5.1 See https://github.com/sonirico/withttp", false).
     WithParseJSONEachRowChan(res).
     WithExpectedStatusCodes(http.StatusOK)
 
diff --git a/adapter_fasthttp.go b/adapter_fasthttp.go
index 2561808..88642cc 100644
--- a/adapter_fasthttp.go
+++ b/adapter_fasthttp.go
@@ -35,11 +35,17 @@ func (a *fastHttpReqAdapter) AddHeader(key, value string) {
 	a.req.Header.Add(key, value)
 }
 
+func (a *fastHttpReqAdapter) RangeHeaders(fn func(string, string)) {
+	a.req.Header.VisitAll(func(key, value []byte) {
+		fn(string(key), string(value))
+	})
+}
+
 func (a *fastHttpReqAdapter) SetHeader(key, value string) {
 	a.req.Header.Set(key, value)
 }
 
-func (a *fastHttpReqAdapter) GetHeader(key string) (string, bool) {
+func (a *fastHttpReqAdapter) Header(key string) (string, bool) {
 	data := a.req.Header.Peek(key)
 	if data == nil || len(data) == 0 {
 		return "", false
@@ -49,6 +55,10 @@ func (a *fastHttpReqAdapter) GetHeader(key string) (string, bool) {
 	return string(bts), true
 }
 
+func (a *fastHttpReqAdapter) Method() string {
+	return string(a.req.Header.Method())
+}
+
 func (a *fastHttpReqAdapter) SetMethod(method string) {
 	a.req.Header.SetMethod(method)
 }
@@ -171,7 +181,7 @@ func (a *fastHttpResAdapter) SetHeader(key, value string) {
 	a.res.Header.Set(key, value)
 }
 
-func (a *fastHttpResAdapter) GetHeader(key string) (string, bool) {
+func (a *fastHttpResAdapter) Header(key string) (string, bool) {
 	data := a.res.Header.Peek(key)
 	if data == nil || len(data) == 0 {
 		return "", false
@@ -180,3 +190,9 @@ func (a *fastHttpResAdapter) GetHeader(key string) (string, bool) {
 	copy(bts, data)
 	return string(bts), true
 }
+
+func (a *fastHttpResAdapter) RangeHeaders(fn func(string, string)) {
+	a.res.Header.VisitAll(func(key, value []byte) {
+		fn(string(key), string(value))
+	})
+}
diff --git a/adapter_native.go b/adapter_native.go
index fff3342..024d73d 100644
--- a/adapter_native.go
+++ b/adapter_native.go
@@ -6,6 +6,7 @@ import (
 	"io"
 	"net/http"
 	"net/url"
+	"strings"
 )
 
 type (
@@ -32,11 +33,15 @@ func (a *nativeReqAdapter) SetHeader(key, value string) {
 	a.req.Header.Set(key, value)
 }
 
-func (a *nativeReqAdapter) GetHeader(key string) (string, bool) {
+func (a *nativeReqAdapter) Header(key string) (string, bool) {
 	s := a.req.Header.Get(key)
 	return s, len(s) > 0
 }
 
+func (a *nativeReqAdapter) Method() string {
+	return a.req.Method
+}
+
 func (a *nativeReqAdapter) SetMethod(method string) {
 	a.req.Method = method
 }
@@ -62,6 +67,12 @@ func (a *nativeReqAdapter) Body() []byte {
 	return bts
 }
 
+func (a *nativeReqAdapter) RangeHeaders(fn func(string, string)) {
+	for k, v := range a.req.Header {
+		fn(k, strings.Join(v, ", "))
+	}
+}
+
 func (a *nativeReqAdapter) BodyStream() io.ReadWriteCloser {
 	return a.body
 }
@@ -127,7 +138,13 @@ func (a *nativeResAdapter) SetHeader(key, value string) {
 	a.res.Header.Set(key, value)
 }
 
-func (a *nativeResAdapter) GetHeader(key string) (string, bool) {
+func (a *nativeResAdapter) Header(key string) (string, bool) {
 	s := a.res.Header.Get(key)
 	return s, len(s) > 0
 }
+
+func (a *nativeResAdapter) RangeHeaders(fn func(string, string)) {
+	for k, v := range a.res.Header {
+		fn(k, strings.Join(v, ", "))
+	}
+}
diff --git a/call.go b/call.go
index 775ec2e..6295471 100644
--- a/call.go
+++ b/call.go
@@ -21,7 +21,9 @@ type (
 	CallResOptionFunc[T any] func(c *Call[T], res Response) error
 
 	Call[T any] struct {
-		client client
+		logger logger
+
+		client Client
 
 		reqOptions []ReqOption // TODO: Linked Lists
 		resOptions []ResOption
@@ -50,7 +52,7 @@ func (f CallReqOptionFunc[T]) Configure(c *Call[T], req Request) error {
 	return f(c, req)
 }
 
-func NewCall[T any](client client) *Call[T] {
+func NewCall[T any](client Client) *Call[T] {
 	return &Call[T]{client: client}
 }
 
@@ -146,6 +148,8 @@ func (c *Call[T]) callEndpoint(ctx context.Context, e *Endpoint) (err error) {
 		wg.Wait()
 	}
 
+	c.log("%s %s returned status code %d", req.Method(), req.URL().String(), res.Status())
+
 	if err != nil {
 		return
 	}
@@ -166,3 +170,11 @@ func (c *Call[T]) callEndpoint(ctx context.Context, e *Endpoint) (err error) {
 
 	return
 }
+
+func (c *Call[T]) log(tpl string, args ...any) {
+	if c.logger == nil {
+		return
+	}
+
+	c.logger.Printf(tpl, args...)
+}
diff --git a/call_with.go b/call_with.go
new file mode 100644
index 0000000..19d8165
--- /dev/null
+++ b/call_with.go
@@ -0,0 +1,57 @@
+package withttp
+
+import (
+	"bufio"
+	"fmt"
+	"io"
+)
+
+func (c *Call[T]) WithLogger(l logger) *Call[T] {
+	c.logger = l
+	return c
+}
+
+func (c *Call[T]) Log(w io.Writer) {
+	buf := bufio.NewWriter(w)
+
+	_, _ = buf.WriteString(c.Req.Method())
+	_, _ = buf.WriteString(" ")
+	_, _ = buf.WriteString(c.Req.URL().String())
+	_, _ = buf.WriteString("\n")
+
+	c.Req.RangeHeaders(func(key string, value string) {
+		_, _ = buf.WriteString(key)
+		_ = buf.WriteByte(':')
+		_ = buf.WriteByte(' ')
+		_, _ = buf.WriteString(value)
+		_ = buf.WriteByte('\n')
+	})
+
+	if !c.ReqIsStream && len(c.ReqBodyRaw) > 0 {
+		_ = buf.WriteByte('\n')
+		_, _ = buf.Write(c.ReqBodyRaw)
+		_ = buf.WriteByte('\n')
+	}
+
+	_ = buf.WriteByte('\n')
+
+	// TODO: print text repr of status code
+	_, _ = buf.WriteString(fmt.Sprintf("%d %s", c.Res.Status(), ""))
+	_ = buf.WriteByte('\n')
+
+	c.Res.RangeHeaders(func(key string, value string) {
+		_, _ = buf.WriteString(key)
+		_ = buf.WriteByte(':')
+		_ = buf.WriteByte(' ')
+		_, _ = buf.WriteString(value)
+		_ = buf.WriteByte('\n')
+	})
+
+	if len(c.BodyRaw) > 0 {
+		_, _ = buf.Write(c.BodyRaw)
+	}
+
+	_ = buf.WriteByte('\n')
+
+	_ = buf.Flush()
+}
diff --git a/csvparser/types.go b/csvparser/types.go
index f837506..a162925 100644
--- a/csvparser/types.go
+++ b/csvparser/types.go
@@ -9,10 +9,6 @@ import (
 )
 
 type (
-	parseOpts struct {
-		sep byte
-	}
-
 	Type[T any] interface {
 		Parse(data []byte) (T, int, error)
 		//Compile(x T, writer io.Writer) error
diff --git a/endpoint.go b/endpoint.go
index 84a4437..c7fb355 100644
--- a/endpoint.go
+++ b/endpoint.go
@@ -10,13 +10,16 @@ type (
 	Header interface {
 		SetHeader(k, v string)
 		AddHeader(k, v string)
-		GetHeader(k string) (string, bool)
+		Header(k string) (string, bool)
+		RangeHeaders(func(string, string))
 	}
 
 	Request interface {
 		Header
 
+		Method() string
 		SetMethod(string)
+
 		SetURL(*url.URL)
 		// SetBodyStream sets the stream of body data belonging to a request. bodySize parameter is needed
 		// when using fasthttp implementation.
@@ -40,7 +43,7 @@ type (
 		SetStatus(status int)
 	}
 
-	client interface {
+	Client interface {
 		Request() (Request, error)
 		Do(ctx context.Context, req Request) (Response, error)
 	}
diff --git a/examples/fasthttp/main.go b/examples/fasthttp/main.go
index eb2656e..f75bb0d 100644
--- a/examples/fasthttp/main.go
+++ b/examples/fasthttp/main.go
@@ -24,7 +24,7 @@ func GetRepoInfo(user, repo string) (GithubRepoInfo, error) {
 	call := withttp.NewCall[GithubRepoInfo](withttp.WithFasthttp()).
 		WithURI(fmt.Sprintf("repos/%s/%s", user, repo)).
 		WithMethod(http.MethodGet).
-		WithHeader("User-Agent", "withttp/0.1.0 See https://github.com/sonirico/withttp", false).
+		WithHeader("User-Agent", "withttp/0.5.1 See https://github.com/sonirico/withttp", false).
 		WithHeaderFunc(func() (key, value string, override bool) {
 			key = "X-Date"
 			value = time.Now().String()
@@ -85,7 +85,11 @@ func main() {
 	log.Println(info)
 
 	// Create an issue
-	res, err := CreateRepoIssue("sonirico", "withttp", "test",
-		"This is a test", "sonirico")
+	res, err := CreateRepoIssue(
+		"sonirico",
+		"withttp",
+		"test",
+		"This is a test", "sonirico",
+	)
 	log.Println(res, err)
 }
diff --git a/examples/go.mod b/examples/go.mod
new file mode 100644
index 0000000..9fb130a
--- /dev/null
+++ b/examples/go.mod
@@ -0,0 +1,22 @@
+module withttp_examples
+
+go 1.19
+
+require (
+	github.com/rs/zerolog v1.28.0
+	github.com/sonirico/withttp v0.5.1
+)
+
+require (
+	github.com/andybalholm/brotli v1.0.4 // indirect
+	github.com/klauspost/compress v1.15.9 // indirect
+	github.com/mattn/go-colorable v0.1.12 // indirect
+	github.com/mattn/go-isatty v0.0.14 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/sonirico/stadio v0.6.0 // indirect
+	github.com/valyala/bytebufferpool v1.0.0 // indirect
+	github.com/valyala/fasthttp v1.39.0 // indirect
+	golang.org/x/sys v0.0.0-20220227234510-4e6760a101f9 // indirect
+)
+
+replace github.com/sonirico/withttp v0.5.1 => ../
diff --git a/examples/go.sum b/examples/go.sum
new file mode 100644
index 0000000..8e4d65e
--- /dev/null
+++ b/examples/go.sum
@@ -0,0 +1,39 @@
+github.com/andybalholm/brotli v1.0.4 h1:V7DdXeJtZscaqfNuAdSRuRFzuiKlHSC/Zh3zl9qY3JY=
+github.com/andybalholm/brotli v1.0.4/go.mod h1:fO7iG3H7G2nSZ7m0zPUDn85XEX2GTukHGRSepvi9Eig=
+github.com/coreos/go-systemd/v22 v22.3.3-0.20220203105225-a9a7ef127534/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
+github.com/godbus/dbus/v5 v5.0.4/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
+github.com/klauspost/compress v1.15.0/go.mod h1:/3/Vjq9QcHkK5uEr5lBEmyoZ1iFhe47etQ6QUkpK6sk=
+github.com/klauspost/compress v1.15.9 h1:wKRjX6JRtDdrE9qwa4b/Cip7ACOshUI4smpCQanqjSY=
+github.com/klauspost/compress v1.15.9/go.mod h1:PhcZ0MbTNciWF3rruxRgKxI5NkcHHrHUDtV4Yw2GlzU=
+github.com/mattn/go-colorable v0.1.12 h1:jF+Du6AlPIjs2BiUiQlKOX0rt3SujHxPnksPKZbaA40=
+github.com/mattn/go-colorable v0.1.12/go.mod h1:u5H1YNBxpqRaxsYJYSkiCWKzEfiAb1Gb520KVy5xxl4=
+github.com/mattn/go-isatty v0.0.14 h1:yVuAays6BHfxijgZPzw+3Zlu5yQgKGP2/hcQbHb7S9Y=
+github.com/mattn/go-isatty v0.0.14/go.mod h1:7GGIvUiUoEMVVmxf/4nioHXj79iQHKdU27kJ6hsGG94=
+github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
+github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/rs/xid v1.4.0/go.mod h1:trrq9SKmegXys3aeAKXMUTdJsYXVwGY3RLcfgqegfbg=
+github.com/rs/zerolog v1.28.0 h1:MirSo27VyNi7RJYP3078AA1+Cyzd2GB66qy3aUHvsWY=
+github.com/rs/zerolog v1.28.0/go.mod h1:NILgTygv/Uej1ra5XxGf82ZFSLk58MFGAUS2o6usyD0=
+github.com/sonirico/stadio v0.6.0 h1:KriP6AvxI3KH1qxjk4w8PmWBfuL1THBakmIaxJ3dSBs=
+github.com/sonirico/stadio v0.6.0/go.mod h1:4LwjfJhOZwHorB58wz5CNEe4Hbx3XwjLxmX/Imz2om4=
+github.com/valyala/bytebufferpool v1.0.0 h1:GqA5TC/0021Y/b9FG4Oi9Mr3q7XYx6KllzawFIhcdPw=
+github.com/valyala/bytebufferpool v1.0.0/go.mod h1:6bBcMArwyJ5K/AmCkWv1jt77kVWyCJ6HpOuEn7z0Csc=
+github.com/valyala/fasthttp v1.39.0 h1:lW8mGeM7yydOqZKmwyMTaz/PH/A+CLgtmmcjv+OORfU=
+github.com/valyala/fasthttp v1.39.0/go.mod h1:t/G+3rLek+CyY9bnIE+YlMRddxVAAGjhxndDB4i4C0I=
+github.com/valyala/tcplisten v1.0.0/go.mod h1:T0xQ8SeCZGxckz9qRXTfG43PvQ/mcWh7FwZEA7Ioqkc=
+golang.org/x/crypto v0.0.0-20220214200702-86341886e292/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
+golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
+golang.org/x/net v0.0.0-20220225172249-27dd8689420f/go.mod h1:CfG3xpIq0wQ8r1q4Su4UZFWDARRcnwPjda9FqA0JpMk=
+golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20210927094055-39ccf1dd6fa6/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20211216021012-1d35b9e2eb4e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220227234510-4e6760a101f9 h1:nhht2DYV/Sn3qOayu8lM+cU1ii9sTLUeBQwQQfUHtrs=
+golang.org/x/sys v0.0.0-20220227234510-4e6760a101f9/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 v0.3.6/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=
diff --git a/examples/mock/main.go b/examples/mock/main.go
index d15749a..8e975e2 100644
--- a/examples/mock/main.go
+++ b/examples/mock/main.go
@@ -38,7 +38,7 @@ func main() {
 		WithURL("https://github.com/").
 		WithMethod(http.MethodGet).
 		WithBasicAuth("pepito", "secret").
-		WithHeader("User-Agent", "withttp/0.1.0 See https://github.com/sonirico/withttp", false).
+		WithHeader("User-Agent", "withttp/0.5.1 See https://github.com/sonirico/withttp", false).
 		WithHeaderFunc(func() (key, value string, override bool) {
 			key = "X-Date"
 			value = time.Now().String()
diff --git a/examples/singlecall/main.go b/examples/singlecall/main.go
index b4672b2..3ff19f6 100644
--- a/examples/singlecall/main.go
+++ b/examples/singlecall/main.go
@@ -5,7 +5,9 @@ import (
 	"fmt"
 	"log"
 	"net/http"
+	"os"
 
+	"github.com/rs/zerolog"
 	"github.com/sonirico/withttp"
 )
 
@@ -15,16 +17,20 @@ type GithubRepoInfo struct {
 }
 
 func GetRepoInfo(user, repo string) (GithubRepoInfo, error) {
+	l := zerolog.New(os.Stdout)
 
-	call := withttp.NewCall[GithubRepoInfo](withttp.WithFasthttp()).
+	call := withttp.NewCall[GithubRepoInfo](withttp.WithNetHttp()).
 		WithURL(fmt.Sprintf("https://api.github.com/repos/%s/%s", user, repo)).
+		WithLogger(&l).
 		WithMethod(http.MethodGet).
-		WithHeader("User-Agent", "withttp/0.1.0 See https://github.com/sonirico/withttp", false).
+		WithHeader("User-Agent", "withttp/0.5.1 See https://github.com/sonirico/withttp", false).
 		WithParseJSON().
 		WithExpectedStatusCodes(http.StatusOK)
 
 	err := call.Call(context.Background())
 
+	call.Log(os.Stderr)
+
 	return call.BodyParsed, err
 }
 
diff --git a/go.mod b/go.mod
index b50b432..6a95d82 100644
--- a/go.mod
+++ b/go.mod
@@ -2,12 +2,14 @@ module github.com/sonirico/withttp
 
 go 1.19
 
-require github.com/pkg/errors v0.9.1
+require (
+	github.com/pkg/errors v0.9.1
+	github.com/sonirico/stadio v0.6.0
+	github.com/valyala/fasthttp v1.39.0
+)
 
 require (
 	github.com/andybalholm/brotli v1.0.4 // indirect
 	github.com/klauspost/compress v1.15.9 // indirect
-	github.com/sonirico/stadio v0.6.0 // indirect
 	github.com/valyala/bytebufferpool v1.0.0 // indirect
-	github.com/valyala/fasthttp v1.39.0 // indirect
 )
diff --git a/with_logger.go b/with_logger.go
new file mode 100644
index 0000000..cbe263a
--- /dev/null
+++ b/with_logger.go
@@ -0,0 +1,7 @@
+package withttp
+
+type (
+	logger interface {
+		Printf(string, ...any)
+	}
+)
diff --git a/with_res.go b/with_res.go
index 833b893..071f058 100644
--- a/with_res.go
+++ b/with_res.go
@@ -54,19 +54,13 @@ func WithParseStreamChan[T any](factory StreamFactory[T], out chan<- T) CallResO
 
 func WithExpectedStatusCodes[T any](states ...int) CallResOptionFunc[T] {
 	return WithAssertion[T](func(res Response) error {
-		found := false
 		for _, status := range states {
 			if status == res.Status() {
-				found = true
-				break
+				return nil
 			}
 		}
+		return errors.Wrapf(ErrUnexpectedStatusCode, "want: %v, have: %d", states, res.Status())
 
-		if !found {
-			return errors.Wrapf(ErrUnexpectedStatusCode, "want: %v, have: %d", states, res.Status())
-		}
-
-		return nil
 	})
 }