diff --git a/contracts/support/http/body.go b/contracts/support/http/body.go
index 2c632e768..bda8dcd0c 100644
--- a/contracts/support/http/body.go
+++ b/contracts/support/http/body.go
@@ -12,6 +12,6 @@ type Body interface {
 }
 
 type Reader interface {
-	Reader() io.Reader
+	io.Reader
 	ContentType() string
 }
diff --git a/mocks/support/http/Reader.go b/mocks/support/http/Reader.go
index 1dcfde575..3e2bdfadc 100644
--- a/mocks/support/http/Reader.go
+++ b/mocks/support/http/Reader.go
@@ -2,11 +2,7 @@
 
 package http
 
-import (
-	io "io"
-
-	mock "github.com/stretchr/testify/mock"
-)
+import mock "github.com/stretchr/testify/mock"
 
 // Reader is an autogenerated mock type for the Reader type
 type Reader struct {
@@ -66,49 +62,58 @@ func (_c *Reader_ContentType_Call) RunAndReturn(run func() string) *Reader_Conte
 	return _c
 }
 
-// Reader provides a mock function with no fields
-func (_m *Reader) Reader() io.Reader {
-	ret := _m.Called()
+// Read provides a mock function with given fields: p
+func (_m *Reader) Read(p []byte) (int, error) {
+	ret := _m.Called(p)
 
 	if len(ret) == 0 {
-		panic("no return value specified for Reader")
+		panic("no return value specified for Read")
 	}
 
-	var r0 io.Reader
-	if rf, ok := ret.Get(0).(func() io.Reader); ok {
-		r0 = rf()
+	var r0 int
+	var r1 error
+	if rf, ok := ret.Get(0).(func([]byte) (int, error)); ok {
+		return rf(p)
+	}
+	if rf, ok := ret.Get(0).(func([]byte) int); ok {
+		r0 = rf(p)
 	} else {
-		if ret.Get(0) != nil {
-			r0 = ret.Get(0).(io.Reader)
-		}
+		r0 = ret.Get(0).(int)
 	}
 
-	return r0
+	if rf, ok := ret.Get(1).(func([]byte) error); ok {
+		r1 = rf(p)
+	} else {
+		r1 = ret.Error(1)
+	}
+
+	return r0, r1
 }
 
-// Reader_Reader_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'Reader'
-type Reader_Reader_Call struct {
+// Reader_Read_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'Read'
+type Reader_Read_Call struct {
 	*mock.Call
 }
 
-// Reader is a helper method to define mock.On call
-func (_e *Reader_Expecter) Reader() *Reader_Reader_Call {
-	return &Reader_Reader_Call{Call: _e.mock.On("Reader")}
+// Read is a helper method to define mock.On call
+//   - p []byte
+func (_e *Reader_Expecter) Read(p interface{}) *Reader_Read_Call {
+	return &Reader_Read_Call{Call: _e.mock.On("Read", p)}
 }
 
-func (_c *Reader_Reader_Call) Run(run func()) *Reader_Reader_Call {
+func (_c *Reader_Read_Call) Run(run func(p []byte)) *Reader_Read_Call {
 	_c.Call.Run(func(args mock.Arguments) {
-		run()
+		run(args[0].([]byte))
 	})
 	return _c
 }
 
-func (_c *Reader_Reader_Call) Return(_a0 io.Reader) *Reader_Reader_Call {
-	_c.Call.Return(_a0)
+func (_c *Reader_Read_Call) Return(n int, err error) *Reader_Read_Call {
+	_c.Call.Return(n, err)
 	return _c
 }
 
-func (_c *Reader_Reader_Call) RunAndReturn(run func() io.Reader) *Reader_Reader_Call {
+func (_c *Reader_Read_Call) RunAndReturn(run func([]byte) (int, error)) *Reader_Read_Call {
 	_c.Call.Return(run)
 	return _c
 }
diff --git a/support/http/body_test.go b/support/http/body_test.go
index 5584ef7c1..69eda9ae8 100644
--- a/support/http/body_test.go
+++ b/support/http/body_test.go
@@ -43,7 +43,7 @@ func TestBuildJSONBody(t *testing.T) {
 	assert.NoError(t, err)
 
 	buf := new(bytes.Buffer)
-	_, err = buf.ReadFrom(reader.Reader())
+	_, err = buf.ReadFrom(reader)
 	assert.NoError(t, err)
 
 	var result map[string]any
@@ -62,7 +62,7 @@ func TestBuildFormBody(t *testing.T) {
 	assert.NoError(t, err)
 
 	buf := new(bytes.Buffer)
-	_, err = buf.ReadFrom(reader.Reader())
+	_, err = buf.ReadFrom(reader)
 	assert.NoError(t, err)
 
 	formData, err := url.ParseQuery(buf.String())
@@ -87,7 +87,7 @@ func TestBuildMultipartBody(t *testing.T) {
 	assert.NoError(t, err)
 
 	buf := new(bytes.Buffer)
-	_, err = buf.ReadFrom(reader.Reader())
+	_, err = buf.ReadFrom(reader)
 	assert.NoError(t, err)
 
 	contentType := reader.ContentType()
@@ -139,7 +139,7 @@ func TestBuildFormBodyWithSpecialCharacters(t *testing.T) {
 	assert.NoError(t, err)
 
 	buf := new(bytes.Buffer)
-	_, err = buf.ReadFrom(reader.Reader())
+	_, err = buf.ReadFrom(reader)
 	assert.NoError(t, err)
 
 	formData, err := url.ParseQuery(buf.String())
diff --git a/support/http/reader.go b/support/http/reader.go
index 78dd7a04a..6cea57620 100644
--- a/support/http/reader.go
+++ b/support/http/reader.go
@@ -18,8 +18,8 @@ func newReader(body io.Reader, contentType string) http.Reader {
 	}
 }
 
-func (r *readerImpl) Reader() io.Reader {
-	return r.body
+func (r *readerImpl) Read(p []byte) (n int, err error) {
+	return r.body.Read(p)
 }
 
 func (r *readerImpl) ContentType() string {