support heroku

Author: onyas

.env

@@ -0,0 +1 @@
+PROT=8080

Procfile.local

@@ -0,0 +1 @@
+web: go run main.go

README.md

@@ -1,23 +1,23 @@
 ## Usage
 
-```
-go run main.go
-
-go run main.go -client
-```
-
-request http://localhost:8080/ through postman
-
-
+## Debug stage
 
 [Data Race Detector](https://go.dev/doc/articles/race_detector)
-
 ```
 go run -race main.go
 
 go run -race main.go -client
 ```
+request http://localhost:8080/ through postman
 
+## Development with Heroku locally
+```
+//start server locally
+heroku local -f Procfile.local
+
+//start client locally
+go run main.go -client
+```
 
 ## Deploy to Heroku
 
@@ -29,4 +29,7 @@ heroku create
 git push heroku main
 //open you app in browser
 heroku open
+
+//check logs
+heroku logs --tail
 ```

core/ggrok-client.go

@@ -16,7 +16,7 @@ import (
 	"github.com/gorilla/websocket"
 )
 
-var addr = flag.String("addr", "localhost:8080", "http service address")
+var addr = flag.String("addr", "localhost:5000", "http service address")
 
 type GGrokClient struct {
 }

main.go

@@ -19,12 +19,6 @@ func main() {
 	flag.Parse()
 	log.SetFlags(0)
 
-	port := os.Getenv("PORT")
-
-	if port == "" {
-		log.Fatal("$PORT must be set")
-	}
-
 	if client {
 		done := make(chan struct{})
 		go func() {
@@ -37,6 +31,10 @@ func main() {
 		<-done
 	}
 
+	port := os.Getenv("PORT")
+	if port == "" {
+		log.Fatal("$PORT must be set")
+	}
 	s := core.NewServer()
 
 	http.HandleFunc("/$$ggrok", s.Register)