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authentik/proxy/pkg/server/api_ws.go

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2020-09-02 22:04:12 +00:00
package server
import (
"crypto/tls"
"fmt"
"net/http"
"net/url"
"os"
"strings"
"time"
"github.com/go-openapi/strfmt"
"github.com/gorilla/websocket"
"github.com/recws-org/recws"
)
func (ac *APIController) initWS(pbURL url.URL, outpostUUID strfmt.UUID) {
pathTemplate := "%s://%s/ws/outpost/%s/"
scheme := strings.ReplaceAll(pbURL.Scheme, "http", "ws")
header := http.Header{
"Authorization": []string{ac.token},
}
_, set := os.LookupEnv("PASSBOOK_INSECURE")
ws := recws.RecConn{
// KeepAliveTimeout: 10 * time.Second,
NonVerbose: true,
TLSClientConfig: &tls.Config{
InsecureSkipVerify: set,
},
}
ws.Dial(fmt.Sprintf(pathTemplate, scheme, pbURL.Host, outpostUUID.String()), header)
ac.logger.WithField("outpost", outpostUUID.String()).Debug("connecting to passbook")
ac.wsConn = ws
}
// Shutdown Gracefully stops all workers, disconnects from websocket
func (ac *APIController) Shutdown() {
// Cleanly close the connection by sending a close message and then
// waiting (with timeout) for the server to close the connection.
err := ac.wsConn.WriteMessage(websocket.CloseMessage, websocket.FormatCloseMessage(websocket.CloseNormalClosure, ""))
if err != nil {
ac.logger.Println("write close:", err)
return
}
return
}
func (ac *APIController) startWSHandler() {
for {
var wsMsg websocketMessage
err := ac.wsConn.ReadJSON(&wsMsg)
if err != nil {
ac.logger.WithField("loop", "ws-handler").Println("read:", err)
ac.wsConn.CloseAndReconnect()
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return
}
if wsMsg.Instruction != WebsocketInstructionAck {
ac.logger.Debugf("%+v\n", wsMsg)
}
if wsMsg.Instruction == WebsocketInstructionTriggerUpdate {
err := ac.UpdateIfRequired()
if err != nil {
ac.logger.WithField("loop", "ws-handler").WithError(err).Debug("Failed to update")
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}
}
}
}
func (ac *APIController) startWSHealth() {
for ; true; <-time.Tick(time.Second * 10) {
aliveMsg := websocketMessage{
Instruction: WebsocketInstructionHello,
Args: make(map[string]interface{}),
}
err := ac.wsConn.WriteJSON(aliveMsg)
if err != nil {
ac.logger.WithField("loop", "ws-health").Println("write:", err)
ac.wsConn.CloseAndReconnect()
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return
}
}
}