feat: initial commit

cmd/server/main.go

@@ -0,0 +1,62 @@
+// Command server is the host: it serves the admin web panel and acts as the
+// rendezvous point that NAT'd agents dial into over HTTP long-polling.
+//
+// TLS is terminated by nginx in front of this process, so it listens on plain
+// HTTP on localhost by default (see deploy/nginx.conf.example).
+package main
+
+import (
+	"flag"
+	"log"
+	"net/http"
+	"os"
+	"time"
+
+	"github.com/x-grk/longpolling-remote-access/internal/server"
+)
+
+func main() {
+	addr := flag.String("addr", envOr("LPRA_ADDR", "127.0.0.1:8091"), "listen address (behind nginx)")
+	dbPath := flag.String("db", envOr("LPRA_DB", "lpra.db"), "path to SQLite database")
+	distDir := flag.String("dist", envOr("LPRA_DIST", "dist"), "directory with agent binaries served at /download/")
+	tunnelAddr := flag.String("tunnel", envOr("LPRA_TUNNEL_ADDR", ":8446"), "listen address for the direct TCP+UDP forward tunnel (empty disables)")
+	insecureCookies := flag.Bool("insecure-cookies", envOr("LPRA_INSECURE_COOKIES", "") == "1",
+		"do not mark cookies Secure (plain-HTTP local testing only)")
+	flag.Parse()
+
+	db, err := server.OpenDB(*dbPath)
+	if err != nil {
+		log.Fatalf("open db: %v", err)
+	}
+	defer db.Close()
+
+	srv, err := server.New(server.Options{
+		DB:            db,
+		DistDir:       *distDir,
+		SecureCookies: !*insecureCookies,
+		TunnelAddr:    *tunnelAddr,
+	})
+	if err != nil {
+		log.Fatalf("init server: %v", err)
+	}
+
+	httpSrv := &http.Server{
+		Addr:    *addr,
+		Handler: srv.Handler(),
+		// No ReadTimeout/WriteTimeout: long-poll connections are intentionally
+		// long-lived. nginx bounds them instead.
+		ReadHeaderTimeout: 15 * time.Second,
+		IdleTimeout:       130 * time.Second,
+	}
+	log.Printf("lpra server listening on %s (db=%s dist=%s)", *addr, *dbPath, *distDir)
+	if err := httpSrv.ListenAndServe(); err != nil {
+		log.Fatalf("serve: %v", err)
+	}
+}
+
+func envOr(key, def string) string {
+	if v := os.Getenv(key); v != "" {
+		return v
+	}
+	return def
+}