header.go
func (h *Header) MarshalBinary() ([]byte, error) {
	// Version must be 1
	if h.Version != Version {
		return nil, ErrorUnsupportedVersion
	}

	// Arg must not be nil
	if h.Arg == nil {
		return nil, ErrorBadArgumentParameter
	}
	ab, err := h.Arg.MarshalBinary()
	if err != nil {
		return nil, err
	}

	// Allocate correct number of bytes for header and argument
	b := make([]byte, headerLen+len(ab))

	// Place Version in top 4 bits of first byte
	var vf uint8
	vf |= h.Version << 4

	// If needed, place response and error flags in bits 5 and 6 of first byte
	if h.FlagResponse {
		vf |= (1 << 3)
	}
	if h.FlagError {
		vf |= (1 << 2)
	}
	b[0] = vf

	// Store other fields directly in network byte order
	b[1] = uint8(h.Error)
	binary.BigEndian.PutUint16(b[2:4], h.Major)
	b[4] = h.Minor
	b[5] = uint8(h.Command)
	copy(b[6:10], h.Tag[:])

	// Copy argument data into end of header
	copy(b[10:], ab)

	return b, nil
}
func (h *Header) MarshalBinary() ([]byte, error) {
	// Version must be 1
	if h.Version != Version {
		return nil, ErrorUnsupportedVersion
	}

	// Arg must not be nil
	if h.Arg == nil {
		return nil, ErrorBadArgumentParameter
	}
	ab, err := h.Arg.MarshalBinary()
	if err != nil {
		return nil, err
	}

	// Allocate correct number of bytes for header and argument
	b := make([]byte, headerLen+len(ab))

	// Place Version in top 4 bits of first byte
	var vf uint8
	vf |= h.Version << 4

	// If needed, place response and error flags in bits 5 and 6 of first byte
	if h.FlagResponse {
		vf |= (1 << 3)
	}
	if h.FlagError {
		vf |= (1 << 2)
	}
	b[0] = vf

	// Store other fields directly in network byte order
	b[1] = uint8(h.Error)
	binary.BigEndian.PutUint16(b[2:4], h.Major)
	b[4] = h.Minor
	b[5] = uint8(h.Command)
	copy(b[6:10], h.Tag[:])

	// Copy argument data into end of header
	copy(b[10:], ab)

	return b, nil
}
func ( h * Header ) MarshalBinary ( ) ( [ ] byte , error ) { // Version must be 1 if h . Version != Version { return nil , ErrorUnsupportedVersion } // Arg must not be nil if h . Arg == nil { return nil , ErrorBadArgumentParameter } ab , err := h . Arg . MarshalBinary ( ) if err != nil { return nil , err } // Allocate correct number of bytes for header and argument b := make ( [ ] byte , headerLen + len ( ab ) ) // Place Version in top 4 bits of first byte var vf uint8 vf |= h . Version << 4 // If needed, place response and error flags in bits 5 and 6 of first byte if h . FlagResponse { vf |= ( 1 << 3 ) } if h . FlagError { vf |= ( 1 << 2 ) } b [ 0 ] = vf // Store other fields directly in network byte order b [ 1 ] = uint8 ( h . Error ) binary . BigEndian . PutUint16 ( b [ 2 : 4 ] , h . Major ) b [ 4 ] = h . Minor b [ 5 ] = uint8 ( h . Command ) copy ( b [ 6 : 10 ] , h . Tag [ : ] ) // Copy argument data into end of header copy ( b [ 10 : ] , ab ) return b , nil }
// MarshalBinary allocates a byte slice containing the data from a Header.
//
// If h.Version is not Version (1), ErrorUnsupportedVersion is returned.
//
// If h.Arg is nil, ErrorBadArgumentParameter is returned.
MarshalBinary allocates a byte slice containing the data from a Header . If h . Version is not Version ( 1 ) ErrorUnsupportedVersion is returned . If h . Arg is nil ErrorBadArgumentParameter is returned .