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msghead.go
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/
msghead.go
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package gap
import (
"git.golaxy.org/framework/util/binaryutil"
)
// MsgHead 消息头
type MsgHead struct {
Len uint32 // 消息长度
MsgId MsgId // 消息Id
Src string // 来源地址
Seq int64 // 序号
}
// Read implements io.Reader
func (m MsgHead) Read(p []byte) (int, error) {
bs := binaryutil.NewBigEndianStream(p)
if err := bs.WriteUint32(m.Len); err != nil {
return bs.BytesWritten(), err
}
if err := bs.WriteUint32(m.MsgId); err != nil {
return bs.BytesWritten(), err
}
if err := bs.WriteString(m.Src); err != nil {
return bs.BytesWritten(), err
}
if err := bs.WriteInt64(m.Seq); err != nil {
return bs.BytesWritten(), err
}
return bs.BytesWritten(), nil
}
// Write implements io.Writer
func (m *MsgHead) Write(p []byte) (int, error) {
bs := binaryutil.NewBigEndianStream(p)
var err error
m.Len, err = bs.ReadUint32()
if err != nil {
return bs.BytesRead(), err
}
m.MsgId, err = bs.ReadUint32()
if err != nil {
return bs.BytesRead(), err
}
m.Src, err = bs.ReadString()
if err != nil {
return bs.BytesRead(), err
}
m.Seq, err = bs.ReadInt64()
if err != nil {
return bs.BytesRead(), err
}
return bs.BytesRead(), nil
}
// Size 大小
func (m MsgHead) Size() int {
return binaryutil.SizeofUint32() + binaryutil.SizeofUint32() + binaryutil.SizeofString(m.Src) +
binaryutil.SizeofInt64()
}