Go Engine

⚙️ Go Engine

Overview

Go engine là CLI binary xử lý tất cả network operations. UI giao tiếp với engine qua:

• Input: Config JSON file (temp file)
• Output: JSON lines trên stdout
• Diagnostics: Text trên stderr

Commands

Command	File	Description
loadtest	cmd_loadtest.go	HTTP load testing
ping	cmd_ping.go	TCP ping
traceroute	cmd_traceroute.go	Route tracing
dns	cmd_dns.go	DNS record lookup
portscan	cmd_portscan.go	TCP port scanning
ipscan	cmd_ipscan.go	Subnet IP scanning
httpheaders	cmd_httpheaders.go	HTTP response headers
ssl	cmd_ssl.go	SSL certificate check
geoip	cmd_geoip.go	IP geolocation
whois	cmd_whois.go	Domain WHOIS/RDAP
websocket	cmd_websocket.go	WebSocket test

Usage

./engine.exe <command> <config.json>

Concurrency Patterns

Worker Pool (portscan, ipscan)

portCh := make(chan int, len(ports))
var wg sync.WaitGroup
for i := 0; i < workers; i++ {
    wg.Add(1)
    go func() { defer wg.Done(); /* scan */ }()
}

Graceful Shutdown

ctx, cancel := context.WithCancel(context.Background())
signal.Notify(sigCh, syscall.SIGINT, syscall.SIGTERM)
go func() { <-sigCh; cancel() }()

Dependencies

• stdlib only — no external Go modules
• Standard net, net/http, crypto/tls, encoding/json