69 lines
1.6 KiB
Go
69 lines
1.6 KiB
Go
// Copyright 2018 The agentx authors
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// Licensed under the LGPLv3 with static-linking exception.
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// See LICENCE file for details.
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package pdu
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import (
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"bytes"
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"encoding/binary"
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"time"
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)
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// Response defines the pdu response packet.
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type Response struct {
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UpTime time.Duration
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Error Error
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Index uint16
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Variables Variables
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}
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// Type returns the pdu packet type.
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func (r *Response) Type() Type {
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return TypeResponse
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}
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// MarshalBinary returns the pdu packet as a slice of bytes.
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func (r *Response) MarshalBinary() ([]byte, error) {
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buffer := &bytes.Buffer{}
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upTime := uint32(r.UpTime.Seconds() / 100)
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binary.Write(buffer, binary.LittleEndian, &upTime)
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binary.Write(buffer, binary.LittleEndian, &r.Error)
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binary.Write(buffer, binary.LittleEndian, &r.Index)
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vBytes, err := r.Variables.MarshalBinary()
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if err != nil {
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return nil, err
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}
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buffer.Write(vBytes)
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return buffer.Bytes(), nil
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}
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// UnmarshalBinary sets the packet structure from the provided slice of bytes.
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func (r *Response) UnmarshalBinary(data []byte) error {
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buffer := bytes.NewBuffer(data)
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upTime := uint32(0)
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if err := binary.Read(buffer, binary.LittleEndian, &upTime); err != nil {
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return err
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}
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r.UpTime = time.Second * time.Duration(upTime*100)
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if err := binary.Read(buffer, binary.LittleEndian, &r.Error); err != nil {
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return err
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}
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if err := binary.Read(buffer, binary.LittleEndian, &r.Index); err != nil {
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return err
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}
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if err := r.Variables.UnmarshalBinary(data[8:]); 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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func (r *Response) String() string {
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return "(response " + r.Variables.String() + ")"
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}
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