forked from joncody/wsrooms
/
message.go
executable file
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/
message.go
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// Title: message.go
// Author: Jon Cody
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package wsrooms
import (
"encoding/json"
)
// Message protocol followed by wsrooms servers and clients
type Message struct {
RoomLength int `json:"roomLength"` // room name length
Room string `json:"room"` // room name
EventLength int `json:"eventLength"` // event name length
Event string `json:"event"` // event name
DstLength int `json:"dstLength"` // destination id length
Dst string `json:"dst"` // destination id
SrcLength int `json:"srcLength"` // source id length
Src string `json:"src"` // source id
PayloadLength int `json:"payloadLength"` // payload length
Payload []byte `json:"payload"` // payload
}
// RoomMessage used only with a room's Send channel
type RoomMessage struct {
Sender *Conn
Data []byte
}
// BytesToMessage returns a Message type from bytes
func BytesToMessage(data []byte) *Message {
msg := new(Message)
json.Unmarshal(data, msg)
return msg
}
// Bytes returns bytes from a Message type
func (msg *Message) Bytes() []byte {
b, _ := json.Marshal(msg)
return b
}
// ConstructMessage constructs and returns a new Message type
func ConstructMessage(room, event, dst, src string, payload []byte) *Message {
return &Message{
RoomLength: len(room),
Room: room,
EventLength: len(event),
Event: event,
DstLength: len(dst),
Dst: dst,
SrcLength: len(src),
Src: src,
PayloadLength: len(payload),
Payload: payload,
}
}