mats
1b75f81119
Co-authored-by: matst80 <mats.tornberg@gmail.com> Reviewed-on: https://git.tornberg.me/mats/go-cart-actor/pulls/1
77 lines
1.7 KiB
Go
77 lines
1.7 KiB
Go
package main
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import (
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"encoding/binary"
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"io"
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)
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const (
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RemoteGetState = uint16(0x01)
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RemoteHandleMessage = uint16(0x02)
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ResponseBody = uint16(0x03)
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)
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type CartPacket struct {
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Version uint16
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MessageType uint16
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Id CartId
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DataLength uint16
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}
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type ResponsePacket struct {
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Version uint16
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MessageType uint16
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DataLength uint16
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}
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func SendCartPacket(conn io.Writer, id CartId, messageType uint16, datafn func(w io.Writer) error) error {
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data, err := GetData(datafn)
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if err != nil {
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return err
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}
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binary.Write(conn, binary.LittleEndian, CartPacket{
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Version: 2,
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MessageType: messageType,
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Id: id,
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DataLength: uint16(len(data)),
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})
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_, err = conn.Write(data)
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return err
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}
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func SendPacket(conn io.Writer, messageType uint16, datafn func(w io.Writer) error) error {
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data, err := GetData(datafn)
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if err != nil {
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return err
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}
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binary.Write(conn, binary.LittleEndian, ResponsePacket{
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Version: 1,
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MessageType: messageType,
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DataLength: uint16(len(data)),
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})
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_, err = conn.Write(data)
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return err
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}
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// func ReceiveCartPacket(conn io.Reader) (CartPacket, []byte, error) {
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// var packet CartPacket
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// err := binary.Read(conn, binary.LittleEndian, &packet)
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// if err != nil {
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// return packet, nil, err
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// }
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// data := make([]byte, packet.DataLength)
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// _, err = conn.Read(data)
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// return packet, data, err
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// }
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func ReceivePacket(conn io.Reader) (uint16, []byte, error) {
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var packet ResponsePacket
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err := binary.Read(conn, binary.LittleEndian, &packet)
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if err != nil {
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return packet.MessageType, nil, err
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}
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data := make([]byte, packet.DataLength)
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_, err = conn.Read(data)
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return packet.MessageType, data, err
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}
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