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// Copyright (C) 2019-2023 Algorand, Inc.
// This file is part of go-algorand
//
// go-algorand is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// go-algorand is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with go-algorand. If not, see <https://www.gnu.org/licenses/>.
package main
import (
"fmt"
"net/http"
"os"
"strings"
"time"
"github.com/algorand/websocket"
"github.com/algorand/go-algorand/cmd/tealdbg/cdt"
)
type wsClient struct {
conn *websocket.Conn
received bool
}
func (c *wsClient) Connect(url string) error {
var websocketDialer = websocket.Dialer{
HandshakeTimeout: 45 * time.Second,
EnableCompression: false,
}
requestHeader := make(http.Header)
conn, _, err := websocketDialer.Dial(url, requestHeader)
if err != nil {
return err
}
c.conn = conn
return nil
}
func (c *wsClient) SendJSON(data interface{}) error {
return c.conn.WriteJSON(data)
}
func (c *wsClient) Receive(buf []byte) (int, error) {
if !c.received {
c.conn.SetReadLimit(2 * 1024 * 1024)
c.received = true
}
_, msg, err := c.conn.ReadMessage()
if err != nil && !strings.HasSuffix(err.Error(), "close 1000 (normal)") {
return 0, err
}
copy(buf, msg)
return len(msg), nil
}
func (c *wsClient) Close() {
c.conn.WriteControl(websocket.CloseMessage, websocket.FormatCloseMessage(websocket.CloseNormalClosure, ""), time.Now().Add(5*time.Second))
c.conn.CloseWithoutFlush()
}
func main() {
if len(os.Args) < 2 {
fmt.Printf("Usage: %s <ws url to connect>\n", os.Args[0])
os.Exit(1)
}
url := os.Args[1]
var client wsClient
var err error
data := make([]byte, 1024)
if err = client.Connect(url); err != nil {
fmt.Printf("Connect error: %v\n", err)
os.Exit(1)
}
var counter int64
counter++
req := cdt.ChromeRequest{ID: counter, Method: "Debugger.Enable"}
if err = client.SendJSON(req); err != nil {
fmt.Printf("Send error: %v", err)
os.Exit(1)
}
if _, err = client.Receive(data); err != nil {
fmt.Printf("Recv error: %v", err)
os.Exit(1)
}
fmt.Printf("%s\n", string(data))
counter++
req = cdt.ChromeRequest{ID: counter, Method: "Runtime.runIfWaitingForDebugger"}
if err = client.SendJSON(req); err != nil {
fmt.Printf("Send error: %v", err)
os.Exit(1)
}
if _, err = client.Receive(data); err != nil {
fmt.Printf("Recv error: %v", err)
os.Exit(1)
}
fmt.Printf("%s\n", string(data))
counter++
req = cdt.ChromeRequest{ID: counter, Method: "Debugger.resume"}
if err = client.SendJSON(req); err != nil {
fmt.Printf("Send error: %v", err)
os.Exit(1)
}
if _, err = client.Receive(data); err != nil {
fmt.Printf("Recv error: %v", err)
os.Exit(1)
}
fmt.Printf("%s\n", string(data))
client.Close()
}
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