diff --git a/server/genrest/compliance.go b/server/genrest/compliance.go
index 644b9329b..e769420f2 100644
--- a/server/genrest/compliance.go
+++ b/server/genrest/compliance.go
@@ -55,8 +55,8 @@ func (backend *RESTBackend) HandleRepeatDataBody(w http.ResponseWriter, r *http.
 	// Intentional: Field values in the URL path override those set in the body.
 	var jsonReader bytes.Buffer
 	bodyReader := io.TeeReader(r.Body, &jsonReader)
-	rBytes := make([]byte, r.ContentLength)
-	if _, err := bodyReader.Read(rBytes); err != nil && err != io.EOF {
+	rBytes, err := io.ReadAll(bodyReader)
+	if err != nil {
 		backend.Error(w, http.StatusBadRequest, "error reading body content: %s", err)
 		return
 	}
@@ -130,8 +130,8 @@ func (backend *RESTBackend) HandleRepeatDataBodyInfo(w http.ResponseWriter, r *h
 	var bodyField genprotopb.ComplianceData
 	var jsonReader bytes.Buffer
 	bodyReader := io.TeeReader(r.Body, &jsonReader)
-	rBytes := make([]byte, r.ContentLength)
-	if _, err := bodyReader.Read(rBytes); err != nil && err != io.EOF {
+	rBytes, err := io.ReadAll(bodyReader)
+	if err != nil {
 		backend.Error(w, http.StatusBadRequest, "error reading body content: %s", err)
 		return
 	}
@@ -537,8 +537,8 @@ func (backend *RESTBackend) HandleRepeatDataBodyPut(w http.ResponseWriter, r *ht
 	// Intentional: Field values in the URL path override those set in the body.
 	var jsonReader bytes.Buffer
 	bodyReader := io.TeeReader(r.Body, &jsonReader)
-	rBytes := make([]byte, r.ContentLength)
-	if _, err := bodyReader.Read(rBytes); err != nil && err != io.EOF {
+	rBytes, err := io.ReadAll(bodyReader)
+	if err != nil {
 		backend.Error(w, http.StatusBadRequest, "error reading body content: %s", err)
 		return
 	}
@@ -611,8 +611,8 @@ func (backend *RESTBackend) HandleRepeatDataBodyPatch(w http.ResponseWriter, r *
 	// Intentional: Field values in the URL path override those set in the body.
 	var jsonReader bytes.Buffer
 	bodyReader := io.TeeReader(r.Body, &jsonReader)
-	rBytes := make([]byte, r.ContentLength)
-	if _, err := bodyReader.Read(rBytes); err != nil && err != io.EOF {
+	rBytes, err := io.ReadAll(bodyReader)
+	if err != nil {
 		backend.Error(w, http.StatusBadRequest, "error reading body content: %s", err)
 		return
 	}
diff --git a/server/genrest/echo.go b/server/genrest/echo.go
index cbf89d155..817b0dcd1 100644
--- a/server/genrest/echo.go
+++ b/server/genrest/echo.go
@@ -55,8 +55,8 @@ func (backend *RESTBackend) HandleEcho(w http.ResponseWriter, r *http.Request) {
 	// Intentional: Field values in the URL path override those set in the body.
 	var jsonReader bytes.Buffer
 	bodyReader := io.TeeReader(r.Body, &jsonReader)
-	rBytes := make([]byte, r.ContentLength)
-	if _, err := bodyReader.Read(rBytes); err != nil && err != io.EOF {
+	rBytes, err := io.ReadAll(bodyReader)
+	if err != nil {
 		backend.Error(w, http.StatusBadRequest, "error reading body content: %s", err)
 		return
 	}
@@ -129,8 +129,8 @@ func (backend *RESTBackend) HandleEchoErrorDetails(w http.ResponseWriter, r *htt
 	// Intentional: Field values in the URL path override those set in the body.
 	var jsonReader bytes.Buffer
 	bodyReader := io.TeeReader(r.Body, &jsonReader)
-	rBytes := make([]byte, r.ContentLength)
-	if _, err := bodyReader.Read(rBytes); err != nil && err != io.EOF {
+	rBytes, err := io.ReadAll(bodyReader)
+	if err != nil {
 		backend.Error(w, http.StatusBadRequest, "error reading body content: %s", err)
 		return
 	}
@@ -203,8 +203,8 @@ func (backend *RESTBackend) HandleExpand(w http.ResponseWriter, r *http.Request)
 	// Intentional: Field values in the URL path override those set in the body.
 	var jsonReader bytes.Buffer
 	bodyReader := io.TeeReader(r.Body, &jsonReader)
-	rBytes := make([]byte, r.ContentLength)
-	if _, err := bodyReader.Read(rBytes); err != nil && err != io.EOF {
+	rBytes, err := io.ReadAll(bodyReader)
+	if err != nil {
 		backend.Error(w, http.StatusBadRequest, "error reading body content: %s", err)
 		return
 	}
@@ -280,8 +280,8 @@ func (backend *RESTBackend) HandlePagedExpand(w http.ResponseWriter, r *http.Req
 	// Intentional: Field values in the URL path override those set in the body.
 	var jsonReader bytes.Buffer
 	bodyReader := io.TeeReader(r.Body, &jsonReader)
-	rBytes := make([]byte, r.ContentLength)
-	if _, err := bodyReader.Read(rBytes); err != nil && err != io.EOF {
+	rBytes, err := io.ReadAll(bodyReader)
+	if err != nil {
 		backend.Error(w, http.StatusBadRequest, "error reading body content: %s", err)
 		return
 	}
@@ -354,8 +354,8 @@ func (backend *RESTBackend) HandlePagedExpandLegacy(w http.ResponseWriter, r *ht
 	// Intentional: Field values in the URL path override those set in the body.
 	var jsonReader bytes.Buffer
 	bodyReader := io.TeeReader(r.Body, &jsonReader)
-	rBytes := make([]byte, r.ContentLength)
-	if _, err := bodyReader.Read(rBytes); err != nil && err != io.EOF {
+	rBytes, err := io.ReadAll(bodyReader)
+	if err != nil {
 		backend.Error(w, http.StatusBadRequest, "error reading body content: %s", err)
 		return
 	}
@@ -428,8 +428,8 @@ func (backend *RESTBackend) HandlePagedExpandLegacyMapped(w http.ResponseWriter,
 	// Intentional: Field values in the URL path override those set in the body.
 	var jsonReader bytes.Buffer
 	bodyReader := io.TeeReader(r.Body, &jsonReader)
-	rBytes := make([]byte, r.ContentLength)
-	if _, err := bodyReader.Read(rBytes); err != nil && err != io.EOF {
+	rBytes, err := io.ReadAll(bodyReader)
+	if err != nil {
 		backend.Error(w, http.StatusBadRequest, "error reading body content: %s", err)
 		return
 	}
@@ -502,8 +502,8 @@ func (backend *RESTBackend) HandleWait(w http.ResponseWriter, r *http.Request) {
 	// Intentional: Field values in the URL path override those set in the body.
 	var jsonReader bytes.Buffer
 	bodyReader := io.TeeReader(r.Body, &jsonReader)
-	rBytes := make([]byte, r.ContentLength)
-	if _, err := bodyReader.Read(rBytes); err != nil && err != io.EOF {
+	rBytes, err := io.ReadAll(bodyReader)
+	if err != nil {
 		backend.Error(w, http.StatusBadRequest, "error reading body content: %s", err)
 		return
 	}
@@ -576,8 +576,8 @@ func (backend *RESTBackend) HandleBlock(w http.ResponseWriter, r *http.Request)
 	// Intentional: Field values in the URL path override those set in the body.
 	var jsonReader bytes.Buffer
 	bodyReader := io.TeeReader(r.Body, &jsonReader)
-	rBytes := make([]byte, r.ContentLength)
-	if _, err := bodyReader.Read(rBytes); err != nil && err != io.EOF {
+	rBytes, err := io.ReadAll(bodyReader)
+	if err != nil {
 		backend.Error(w, http.StatusBadRequest, "error reading body content: %s", err)
 		return
 	}
diff --git a/server/genrest/iampolicy.go b/server/genrest/iampolicy.go
index df8f2f33b..63e9bdefd 100644
--- a/server/genrest/iampolicy.go
+++ b/server/genrest/iampolicy.go
@@ -55,8 +55,8 @@ func (backend *RESTBackend) HandleSetIamPolicy(w http.ResponseWriter, r *http.Re
 	// Intentional: Field values in the URL path override those set in the body.
 	var jsonReader bytes.Buffer
 	bodyReader := io.TeeReader(r.Body, &jsonReader)
-	rBytes := make([]byte, r.ContentLength)
-	if _, err := bodyReader.Read(rBytes); err != nil && err != io.EOF {
+	rBytes, err := io.ReadAll(bodyReader)
+	if err != nil {
 		backend.Error(w, http.StatusBadRequest, "error reading body content: %s", err)
 		return
 	}
@@ -129,8 +129,8 @@ func (backend *RESTBackend) HandleSetIamPolicy_1(w http.ResponseWriter, r *http.
 	// Intentional: Field values in the URL path override those set in the body.
 	var jsonReader bytes.Buffer
 	bodyReader := io.TeeReader(r.Body, &jsonReader)
-	rBytes := make([]byte, r.ContentLength)
-	if _, err := bodyReader.Read(rBytes); err != nil && err != io.EOF {
+	rBytes, err := io.ReadAll(bodyReader)
+	if err != nil {
 		backend.Error(w, http.StatusBadRequest, "error reading body content: %s", err)
 		return
 	}
@@ -203,8 +203,8 @@ func (backend *RESTBackend) HandleSetIamPolicy_2(w http.ResponseWriter, r *http.
 	// Intentional: Field values in the URL path override those set in the body.
 	var jsonReader bytes.Buffer
 	bodyReader := io.TeeReader(r.Body, &jsonReader)
-	rBytes := make([]byte, r.ContentLength)
-	if _, err := bodyReader.Read(rBytes); err != nil && err != io.EOF {
+	rBytes, err := io.ReadAll(bodyReader)
+	if err != nil {
 		backend.Error(w, http.StatusBadRequest, "error reading body content: %s", err)
 		return
 	}
@@ -277,8 +277,8 @@ func (backend *RESTBackend) HandleSetIamPolicy_3(w http.ResponseWriter, r *http.
 	// Intentional: Field values in the URL path override those set in the body.
 	var jsonReader bytes.Buffer
 	bodyReader := io.TeeReader(r.Body, &jsonReader)
-	rBytes := make([]byte, r.ContentLength)
-	if _, err := bodyReader.Read(rBytes); err != nil && err != io.EOF {
+	rBytes, err := io.ReadAll(bodyReader)
+	if err != nil {
 		backend.Error(w, http.StatusBadRequest, "error reading body content: %s", err)
 		return
 	}
@@ -615,8 +615,8 @@ func (backend *RESTBackend) HandleTestIamPermissions(w http.ResponseWriter, r *h
 	// Intentional: Field values in the URL path override those set in the body.
 	var jsonReader bytes.Buffer
 	bodyReader := io.TeeReader(r.Body, &jsonReader)
-	rBytes := make([]byte, r.ContentLength)
-	if _, err := bodyReader.Read(rBytes); err != nil && err != io.EOF {
+	rBytes, err := io.ReadAll(bodyReader)
+	if err != nil {
 		backend.Error(w, http.StatusBadRequest, "error reading body content: %s", err)
 		return
 	}
@@ -689,8 +689,8 @@ func (backend *RESTBackend) HandleTestIamPermissions_1(w http.ResponseWriter, r
 	// Intentional: Field values in the URL path override those set in the body.
 	var jsonReader bytes.Buffer
 	bodyReader := io.TeeReader(r.Body, &jsonReader)
-	rBytes := make([]byte, r.ContentLength)
-	if _, err := bodyReader.Read(rBytes); err != nil && err != io.EOF {
+	rBytes, err := io.ReadAll(bodyReader)
+	if err != nil {
 		backend.Error(w, http.StatusBadRequest, "error reading body content: %s", err)
 		return
 	}
@@ -763,8 +763,8 @@ func (backend *RESTBackend) HandleTestIamPermissions_2(w http.ResponseWriter, r
 	// Intentional: Field values in the URL path override those set in the body.
 	var jsonReader bytes.Buffer
 	bodyReader := io.TeeReader(r.Body, &jsonReader)
-	rBytes := make([]byte, r.ContentLength)
-	if _, err := bodyReader.Read(rBytes); err != nil && err != io.EOF {
+	rBytes, err := io.ReadAll(bodyReader)
+	if err != nil {
 		backend.Error(w, http.StatusBadRequest, "error reading body content: %s", err)
 		return
 	}
@@ -837,8 +837,8 @@ func (backend *RESTBackend) HandleTestIamPermissions_3(w http.ResponseWriter, r
 	// Intentional: Field values in the URL path override those set in the body.
 	var jsonReader bytes.Buffer
 	bodyReader := io.TeeReader(r.Body, &jsonReader)
-	rBytes := make([]byte, r.ContentLength)
-	if _, err := bodyReader.Read(rBytes); err != nil && err != io.EOF {
+	rBytes, err := io.ReadAll(bodyReader)
+	if err != nil {
 		backend.Error(w, http.StatusBadRequest, "error reading body content: %s", err)
 		return
 	}
diff --git a/server/genrest/identity.go b/server/genrest/identity.go
index c153cfd94..5e7754c42 100644
--- a/server/genrest/identity.go
+++ b/server/genrest/identity.go
@@ -55,8 +55,8 @@ func (backend *RESTBackend) HandleCreateUser(w http.ResponseWriter, r *http.Requ
 	// Intentional: Field values in the URL path override those set in the body.
 	var jsonReader bytes.Buffer
 	bodyReader := io.TeeReader(r.Body, &jsonReader)
-	rBytes := make([]byte, r.ContentLength)
-	if _, err := bodyReader.Read(rBytes); err != nil && err != io.EOF {
+	rBytes, err := io.ReadAll(bodyReader)
+	if err != nil {
 		backend.Error(w, http.StatusBadRequest, "error reading body content: %s", err)
 		return
 	}
@@ -196,8 +196,8 @@ func (backend *RESTBackend) HandleUpdateUser(w http.ResponseWriter, r *http.Requ
 	var bodyField genprotopb.User
 	var jsonReader bytes.Buffer
 	bodyReader := io.TeeReader(r.Body, &jsonReader)
-	rBytes := make([]byte, r.ContentLength)
-	if _, err := bodyReader.Read(rBytes); err != nil && err != io.EOF {
+	rBytes, err := io.ReadAll(bodyReader)
+	if err != nil {
 		backend.Error(w, http.StatusBadRequest, "error reading body content: %s", err)
 		return
 	}
diff --git a/server/genrest/messaging.go b/server/genrest/messaging.go
index db11c0dd2..410a3139c 100644
--- a/server/genrest/messaging.go
+++ b/server/genrest/messaging.go
@@ -55,8 +55,8 @@ func (backend *RESTBackend) HandleCreateRoom(w http.ResponseWriter, r *http.Requ
 	// Intentional: Field values in the URL path override those set in the body.
 	var jsonReader bytes.Buffer
 	bodyReader := io.TeeReader(r.Body, &jsonReader)
-	rBytes := make([]byte, r.ContentLength)
-	if _, err := bodyReader.Read(rBytes); err != nil && err != io.EOF {
+	rBytes, err := io.ReadAll(bodyReader)
+	if err != nil {
 		backend.Error(w, http.StatusBadRequest, "error reading body content: %s", err)
 		return
 	}
@@ -196,8 +196,8 @@ func (backend *RESTBackend) HandleUpdateRoom(w http.ResponseWriter, r *http.Requ
 	var bodyField genprotopb.Room
 	var jsonReader bytes.Buffer
 	bodyReader := io.TeeReader(r.Body, &jsonReader)
-	rBytes := make([]byte, r.ContentLength)
-	if _, err := bodyReader.Read(rBytes); err != nil && err != io.EOF {
+	rBytes, err := io.ReadAll(bodyReader)
+	if err != nil {
 		backend.Error(w, http.StatusBadRequest, "error reading body content: %s", err)
 		return
 	}
@@ -405,8 +405,8 @@ func (backend *RESTBackend) HandleCreateBlurb(w http.ResponseWriter, r *http.Req
 	// Intentional: Field values in the URL path override those set in the body.
 	var jsonReader bytes.Buffer
 	bodyReader := io.TeeReader(r.Body, &jsonReader)
-	rBytes := make([]byte, r.ContentLength)
-	if _, err := bodyReader.Read(rBytes); err != nil && err != io.EOF {
+	rBytes, err := io.ReadAll(bodyReader)
+	if err != nil {
 		backend.Error(w, http.StatusBadRequest, "error reading body content: %s", err)
 		return
 	}
@@ -479,8 +479,8 @@ func (backend *RESTBackend) HandleCreateBlurb_1(w http.ResponseWriter, r *http.R
 	// Intentional: Field values in the URL path override those set in the body.
 	var jsonReader bytes.Buffer
 	bodyReader := io.TeeReader(r.Body, &jsonReader)
-	rBytes := make([]byte, r.ContentLength)
-	if _, err := bodyReader.Read(rBytes); err != nil && err != io.EOF {
+	rBytes, err := io.ReadAll(bodyReader)
+	if err != nil {
 		backend.Error(w, http.StatusBadRequest, "error reading body content: %s", err)
 		return
 	}
@@ -686,8 +686,8 @@ func (backend *RESTBackend) HandleUpdateBlurb(w http.ResponseWriter, r *http.Req
 	var bodyField genprotopb.Blurb
 	var jsonReader bytes.Buffer
 	bodyReader := io.TeeReader(r.Body, &jsonReader)
-	rBytes := make([]byte, r.ContentLength)
-	if _, err := bodyReader.Read(rBytes); err != nil && err != io.EOF {
+	rBytes, err := io.ReadAll(bodyReader)
+	if err != nil {
 		backend.Error(w, http.StatusBadRequest, "error reading body content: %s", err)
 		return
 	}
@@ -769,8 +769,8 @@ func (backend *RESTBackend) HandleUpdateBlurb_1(w http.ResponseWriter, r *http.R
 	var bodyField genprotopb.Blurb
 	var jsonReader bytes.Buffer
 	bodyReader := io.TeeReader(r.Body, &jsonReader)
-	rBytes := make([]byte, r.ContentLength)
-	if _, err := bodyReader.Read(rBytes); err != nil && err != io.EOF {
+	rBytes, err := io.ReadAll(bodyReader)
+	if err != nil {
 		backend.Error(w, http.StatusBadRequest, "error reading body content: %s", err)
 		return
 	}
@@ -1115,8 +1115,8 @@ func (backend *RESTBackend) HandleSearchBlurbs(w http.ResponseWriter, r *http.Re
 	// Intentional: Field values in the URL path override those set in the body.
 	var jsonReader bytes.Buffer
 	bodyReader := io.TeeReader(r.Body, &jsonReader)
-	rBytes := make([]byte, r.ContentLength)
-	if _, err := bodyReader.Read(rBytes); err != nil && err != io.EOF {
+	rBytes, err := io.ReadAll(bodyReader)
+	if err != nil {
 		backend.Error(w, http.StatusBadRequest, "error reading body content: %s", err)
 		return
 	}
@@ -1255,8 +1255,8 @@ func (backend *RESTBackend) HandleStreamBlurbs(w http.ResponseWriter, r *http.Re
 	// Intentional: Field values in the URL path override those set in the body.
 	var jsonReader bytes.Buffer
 	bodyReader := io.TeeReader(r.Body, &jsonReader)
-	rBytes := make([]byte, r.ContentLength)
-	if _, err := bodyReader.Read(rBytes); err != nil && err != io.EOF {
+	rBytes, err := io.ReadAll(bodyReader)
+	if err != nil {
 		backend.Error(w, http.StatusBadRequest, "error reading body content: %s", err)
 		return
 	}
@@ -1325,8 +1325,8 @@ func (backend *RESTBackend) HandleStreamBlurbs_1(w http.ResponseWriter, r *http.
 	// Intentional: Field values in the URL path override those set in the body.
 	var jsonReader bytes.Buffer
 	bodyReader := io.TeeReader(r.Body, &jsonReader)
-	rBytes := make([]byte, r.ContentLength)
-	if _, err := bodyReader.Read(rBytes); err != nil && err != io.EOF {
+	rBytes, err := io.ReadAll(bodyReader)
+	if err != nil {
 		backend.Error(w, http.StatusBadRequest, "error reading body content: %s", err)
 		return
 	}
diff --git a/server/genrest/sequenceservice.go b/server/genrest/sequenceservice.go
index fb93d5a0f..320e66972 100644
--- a/server/genrest/sequenceservice.go
+++ b/server/genrest/sequenceservice.go
@@ -56,8 +56,8 @@ func (backend *RESTBackend) HandleCreateSequence(w http.ResponseWriter, r *http.
 	var bodyField genprotopb.Sequence
 	var jsonReader bytes.Buffer
 	bodyReader := io.TeeReader(r.Body, &jsonReader)
-	rBytes := make([]byte, r.ContentLength)
-	if _, err := bodyReader.Read(rBytes); err != nil && err != io.EOF {
+	rBytes, err := io.ReadAll(bodyReader)
+	if err != nil {
 		backend.Error(w, http.StatusBadRequest, "error reading body content: %s", err)
 		return
 	}
@@ -139,8 +139,8 @@ func (backend *RESTBackend) HandleCreateStreamingSequence(w http.ResponseWriter,
 	var bodyField genprotopb.StreamingSequence
 	var jsonReader bytes.Buffer
 	bodyReader := io.TeeReader(r.Body, &jsonReader)
-	rBytes := make([]byte, r.ContentLength)
-	if _, err := bodyReader.Read(rBytes); err != nil && err != io.EOF {
+	rBytes, err := io.ReadAll(bodyReader)
+	if err != nil {
 		backend.Error(w, http.StatusBadRequest, "error reading body content: %s", err)
 		return
 	}
@@ -353,8 +353,8 @@ func (backend *RESTBackend) HandleAttemptSequence(w http.ResponseWriter, r *http
 	// Intentional: Field values in the URL path override those set in the body.
 	var jsonReader bytes.Buffer
 	bodyReader := io.TeeReader(r.Body, &jsonReader)
-	rBytes := make([]byte, r.ContentLength)
-	if _, err := bodyReader.Read(rBytes); err != nil && err != io.EOF {
+	rBytes, err := io.ReadAll(bodyReader)
+	if err != nil {
 		backend.Error(w, http.StatusBadRequest, "error reading body content: %s", err)
 		return
 	}
@@ -427,8 +427,8 @@ func (backend *RESTBackend) HandleAttemptStreamingSequence(w http.ResponseWriter
 	// Intentional: Field values in the URL path override those set in the body.
 	var jsonReader bytes.Buffer
 	bodyReader := io.TeeReader(r.Body, &jsonReader)
-	rBytes := make([]byte, r.ContentLength)
-	if _, err := bodyReader.Read(rBytes); err != nil && err != io.EOF {
+	rBytes, err := io.ReadAll(bodyReader)
+	if err != nil {
 		backend.Error(w, http.StatusBadRequest, "error reading body content: %s", err)
 		return
 	}
diff --git a/server/genrest/testing.go b/server/genrest/testing.go
index 2f59816d2..62db5ae4d 100644
--- a/server/genrest/testing.go
+++ b/server/genrest/testing.go
@@ -56,8 +56,8 @@ func (backend *RESTBackend) HandleCreateSession(w http.ResponseWriter, r *http.R
 	var bodyField genprotopb.Session
 	var jsonReader bytes.Buffer
 	bodyReader := io.TeeReader(r.Body, &jsonReader)
-	rBytes := make([]byte, r.ContentLength)
-	if _, err := bodyReader.Read(rBytes); err != nil && err != io.EOF {
+	rBytes, err := io.ReadAll(bodyReader)
+	if err != nil {
 		backend.Error(w, http.StatusBadRequest, "error reading body content: %s", err)
 		return
 	}
diff --git a/util/genrest/goviewcreator.go b/util/genrest/goviewcreator.go
index 82d575078..71b80c861 100644
--- a/util/genrest/goviewcreator.go
+++ b/util/genrest/goviewcreator.go
@@ -122,8 +122,8 @@ func NewView(model *gomodel.Model) (*goview.View, error) {
 				source.P("  // Intentional: Field values in the URL path override those set in the body.")
 				source.P("  var jsonReader bytes.Buffer")
 				source.P("  bodyReader := io.TeeReader(r.Body, &jsonReader)")
-				source.P("  rBytes := make([]byte, r.ContentLength)")
-				source.P("  if _, err := bodyReader.Read(rBytes); err != nil && err != io.EOF {")
+				source.P("  rBytes, err := io.ReadAll(bodyReader)")
+				source.P("  if err != nil {")
 				source.P(`    backend.Error(w, http.StatusBadRequest, "error reading body content: %%s", err)`)
 				source.P("    return")
 				source.P("  }")
@@ -154,8 +154,8 @@ func NewView(model *gomodel.Model) (*goview.View, error) {
 				source.P("  var %s %s.%s", handler.RequestBodyFieldVariable, handler.RequestBodyFieldPackage, handler.RequestBodyFieldType)
 				source.P("  var jsonReader bytes.Buffer")
 				source.P("  bodyReader := io.TeeReader(r.Body, &jsonReader)")
-				source.P("  rBytes := make([]byte, r.ContentLength)")
-				source.P("  if _, err := bodyReader.Read(rBytes); err != nil && err != io.EOF {")
+				source.P("  rBytes, err := io.ReadAll(bodyReader)")
+				source.P("  if err != nil {")
 				source.P(`    backend.Error(w, http.StatusBadRequest, "error reading body content: %%s", err)`)
 				source.P("    return")
 				source.P("  }")