/
wrapper.go
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/
wrapper.go
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package socket
import (
"errors"
engineio "github.com/googollee/go-engine.io"
socketio "github.com/googollee/go-socket.io"
"github.com/labstack/echo"
)
// Socket.io wrapper interface
type IWrapper interface {
OnConnect(nsp string, f func(echo.Context, socketio.Conn) error)
OnDisconnect(nsp string, f func(echo.Context, socketio.Conn, string))
OnError(nsp string, f func(echo.Context, error))
OnEvent(nsp, event string, f func(echo.Context, socketio.Conn, string))
HandlerFunc(context echo.Context) error
}
type Wrapper struct {
Context echo.Context
Server *socketio.Server
}
// Create wrapper and Socket.io server
func NewWrapper(options *engineio.Options) (*Wrapper, error) {
server, err := socketio.NewServer(options)
if err != nil {
return nil, err
}
return &Wrapper{
Server: server,
}, nil
}
// Create wrapper with exists Socket.io server
func NewWrapperWithServer(server *socketio.Server) (*Wrapper, error) {
if server == nil {
return nil, errors.New("socket.io server can not be nil")
}
return &Wrapper{
Server: server,
}, nil
}
// On Socket.io client connect
func (s *Wrapper) OnConnect(nsp string, f func(echo.Context, socketio.Conn) error) {
s.Server.OnConnect(nsp, func(conn socketio.Conn) error {
return f(s.Context, conn)
})
}
// On Socket.io client disconnect
func (s *Wrapper) OnDisconnect(nsp string, f func(echo.Context, socketio.Conn, string)) {
s.Server.OnDisconnect(nsp, func(conn socketio.Conn, msg string) {
f(s.Context, conn, msg)
})
}
// On Socket.io error
func (s *Wrapper) OnError(nsp string, f func(echo.Context, error)) {
s.Server.OnError(nsp, func(conn socketio.Conn, err error) {
f(s.Context, err)
})
}
// On Socket.io event from client
func (s *Wrapper) OnEvent(nsp, event string, f func(echo.Context, socketio.Conn, string)) {
s.Server.OnEvent(nsp, event, func(conn socketio.Conn, msg string) {
f(s.Context, conn, msg)
})
}
// Handler function
func (s *Wrapper) HandlerFunc(context echo.Context) error {
go s.Server.Serve()
s.Context = context
s.Server.ServeHTTP(context.Response(), context.Request())
return nil
}