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websocket.go
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websocket.go
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/*
*
* Copyright 2020 waterdrop authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package websocket
import (
"net/http"
"github.com/UnderTreeTech/waterdrop/pkg/log"
"github.com/gorilla/websocket"
)
// WebSocketHandler ws callback handler
type WebSocketHandler func(*WebSocket)
// WebSocket ws definition
type WebSocket struct {
Path string
Handler WebSocketHandler
*websocket.Upgrader
*websocket.Conn
}
// NewWebSocket returns a WebSocket instance
func NewWebSocket(path string, handler WebSocketHandler) *WebSocket {
return &WebSocket{
Path: path,
Upgrader: &websocket.Upgrader{},
Handler: handler,
}
}
// Upgrade upgrade http to WebSocket
func (ws *WebSocket) Upgrade(w http.ResponseWriter, r *http.Request) {
conn, err := ws.Upgrader.Upgrade(w, r, nil)
if err != nil {
log.Error(r.Context(), "upgrade fail", log.String("error", err.Error()))
return
}
defer conn.Close()
ws.Conn = conn
ws.Handler(ws)
}