mirror of https://gitee.com/IrisVega/frp.git
73 lines
1.7 KiB
Go
73 lines
1.7 KiB
Go
// Copyright 2016 fatedier, fatedier@gmail.com
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package udp
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import (
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"encoding/base64"
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"encoding/json"
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"net"
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)
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type UdpPacket struct {
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Content []byte `json:"-"`
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Src *net.UDPAddr `json:"-"`
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Dst *net.UDPAddr `json:"-"`
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EncodeContent string `json:"content"`
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SrcStr string `json:"src"`
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DstStr string `json:"dst"`
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}
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func NewUdpPacket(content []byte, src, dst *net.UDPAddr) *UdpPacket {
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up := &UdpPacket{
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Src: src,
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Dst: dst,
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EncodeContent: base64.StdEncoding.EncodeToString(content),
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SrcStr: src.String(),
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DstStr: dst.String(),
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}
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return up
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}
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// parse one udp packet struct to bytes
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func (up *UdpPacket) Pack() []byte {
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b, _ := json.Marshal(up)
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return b
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}
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// parse from bytes to UdpPacket struct
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func (up *UdpPacket) UnPack(packet []byte) error {
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err := json.Unmarshal(packet, &up)
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if err != nil {
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return err
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}
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up.Content, err = base64.StdEncoding.DecodeString(up.EncodeContent)
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if err != nil {
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return err
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}
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up.Src, err = net.ResolveUDPAddr("udp", up.SrcStr)
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if err != nil {
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return err
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}
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up.Dst, err = net.ResolveUDPAddr("udp", up.DstStr)
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if err != nil {
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return err
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}
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return nil
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}
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