refactor: restructure API packages into client/http and server/http with typed proxy/visitor models (#5193)

pkg/util/jsonx/json_v1.go

@@ -0,0 +1,45 @@
+// Copyright 2026 The frp Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package jsonx
+
+import (
+	"bytes"
+	"encoding/json"
+)
+
+type DecodeOptions struct {
+	RejectUnknownMembers bool
+}
+
+func Marshal(v any) ([]byte, error) {
+	return json.Marshal(v)
+}
+
+func MarshalIndent(v any, prefix, indent string) ([]byte, error) {
+	return json.MarshalIndent(v, prefix, indent)
+}
+
+func Unmarshal(data []byte, out any) error {
+	return json.Unmarshal(data, out)
+}
+
+func UnmarshalWithOptions(data []byte, out any, options DecodeOptions) error {
+	if !options.RejectUnknownMembers {
+		return json.Unmarshal(data, out)
+	}
+	decoder := json.NewDecoder(bytes.NewReader(data))
+	decoder.DisallowUnknownFields()
+	return decoder.Decode(out)
+}

pkg/util/jsonx/raw_message.go

@@ -0,0 +1,36 @@
+// Copyright 2026 The frp Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package jsonx
+
+import "fmt"
+
+// RawMessage stores a raw encoded JSON value.
+// It is equivalent to encoding/json.RawMessage behavior.
+type RawMessage []byte
+
+func (m RawMessage) MarshalJSON() ([]byte, error) {
+	if m == nil {
+		return []byte("null"), nil
+	}
+	return m, nil
+}
+
+func (m *RawMessage) UnmarshalJSON(data []byte) error {
+	if m == nil {
+		return fmt.Errorf("jsonx.RawMessage: UnmarshalJSON on nil pointer")
+	}
+	*m = append((*m)[:0], data...)
+	return nil
+}