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|
package tcp
import (
"encoding/binary"
"io"
)
type Writer interface {
Write(b []byte) (n int, err error)
}
type Reader interface {
Read(b []byte) (n int, err error)
}
func WriteStr(w Writer, message string) error {
messageBytes := []byte(message)
sizeBytes := make([]byte, 8)
binary.BigEndian.PutUint64(sizeBytes, uint64(len(messageBytes)))
if _, err := w.Write(sizeBytes); err != nil {
return err
}
if _, err := w.Write(messageBytes); err != nil {
return err
}
return nil
}
func ReadStr(r Reader) (string, error) {
sizeBytes := make([]byte, 8)
if _, err := io.ReadFull(r, sizeBytes); err != nil {
return "", err
}
messageSize := binary.BigEndian.Uint64(sizeBytes)
messageBytes := make([]byte, messageSize)
if _, err := io.ReadFull(r, messageBytes); err != nil {
return "", err
}
return string(messageBytes), nil
}
|
