/
ChatServer.go
75 lines (70 loc) · 1.75 KB
/
ChatServer.go
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package chat
import (
"context"
"github.com/gorilla/websocket"
"google.golang.org/grpc"
"log"
"net"
"net/http"
"sync"
)
type ChatServerImplement struct {
UnimplementedChatServer
}
// 创建一个全局的连接映射,用于存储每个用户对应的 WebSocket 连接
var OnlineMap = make(map[int64]*websocket.Conn)
var mapLock sync.RWMutex // 用于保护连接映射的读写操作
var upgrader = websocket.Upgrader{
CheckOrigin: func(r *http.Request) bool {
// 允许所有的WebSocket连接请求
return true
},
ReadBufferSize: 1024,
WriteBufferSize: 1024,
}
func (c *ChatServerImplement) Chat(ctx context.Context, req *ChatRequest) (*ChatResponse, error) {
productid, consumerid, msg := req.Producter, req.Consumer, req.Msg
resp := new(ChatResponse)
resp.MessageId = "0"
resp.Success = false
resp.Error = ""
http.HandleFunc("/ws", func(w http.ResponseWriter, r *http.Request) {
// 升级 HTTP 连接到 WebSocket
mapLock.RLock()
_, ok := OnlineMap[productid]
mapLock.RUnlock()
if !ok {
wsConn, err := upgrader.Upgrade(w, r, nil)
if err != nil {
log.Println(err)
resp.Error = err.Error()
return
}
mapLock.Lock()
OnlineMap[productid] = wsConn
mapLock.Unlock()
}
mapLock.RLock()
u, ok := OnlineMap[consumerid]
mapLock.RUnlock()
if ok {
resp.Success = true
u.WriteMessage(websocket.TextMessage, []byte(msg))
} else {
resp.Error = "用户不在线"
}
})
return resp, nil
}
func InitChat() {
lis, err := net.Listen("tcp", ":50051")
if err != nil {
log.Fatalf("failed to listen: %v", err)
}
s := grpc.NewServer()
RegisterChatServer(s, &ChatServerImplement{})
log.Printf("server listening at %v", lis.Addr())
if err := s.Serve(lis); err != nil {
log.Fatalf("failed to serve: %v", err)
}
}