固定的severId

go.mod

@@ -22,6 +22,7 @@ require (
 	github.com/cespare/xxhash/v2 v2.2.0 // indirect
 	github.com/chenzhuoyu/base64x v0.0.0-20230717121745-296ad89f973d // indirect
 	github.com/chenzhuoyu/iasm v0.9.1 // indirect
+	github.com/denisbrodbeck/machineid v1.0.1 // indirect
 	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
 	github.com/fsnotify/fsnotify v1.7.0 // indirect
 	github.com/gabriel-vasile/mimetype v1.4.3 // indirect

go.sum

@@ -21,6 +21,8 @@ github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSs
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1VwoXQT9A3Wy9MM3WgvqSxFWenqJduM=
 github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/denisbrodbeck/machineid v1.0.1 h1:geKr9qtkB876mXguW2X6TU4ZynleN6ezuMSRhl4D7AQ=
+github.com/denisbrodbeck/machineid v1.0.1/go.mod h1:dJUwb7PTidGDeYyUBmXZ2GphQBbjJCrnectwCyxcUSI=
 github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f h1:lO4WD4F/rVNCu3HqELle0jiPLLBs70cWOduZpkS1E78=
 github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f/go.mod h1:cuUVRXasLTGF7a8hSLbxyZXjz+1KgoB3wDUb6vlszIc=
 github.com/frankban/quicktest v1.14.6 h1:7Xjx+VpznH+oBnejlPUj8oUpdxnVs4f8XU8WnHkI4W8=

websocket.go

@@ -4,8 +4,10 @@ import (
 	"flag"
 	"fmt"
 	"net/http"
+	"strings"
 
 	"github.com/DeanThompson/ginpprof"
+	"github.com/denisbrodbeck/machineid"
 	"github.com/gin-gonic/gin"
 	"github.com/google/uuid"
 	"github.com/gorilla/websocket"
@@ -34,7 +36,7 @@ func newApp() *gin.Engine {
 	app := gin.Default()
 	ginpprof.Wrap(app)
 
-	id := uuid.NewString()
+	id := serverId()
 	srv := &server.Server{
 		ID: id,
 		Upgrader: websocket.Upgrader{
@@ -51,3 +53,14 @@ func newApp() *gin.Engine {
 	app.GET("/websocket/endpoint", func(ctx *gin.Context) { srv.WebsocketHandler(ctx) })
 	return app
 }
+
+func serverId() string {
+	var id string
+	id, err := machineid.ID()
+	if err != nil {
+		id = uuid.NewString()
+	} else {
+		id = strings.ToLower(id)
+	}
+	return id
+}