client-interface-cleanup (#6)

Refactoring and code cleanup. Improved client command interface.

peer/statusserver.go

@@ -0,0 +1,69 @@
+package peer
+
+import (
+	"encoding/json"
+	"log"
+	"net"
+	"net/http"
+	"net/netip"
+	"os"
+)
+
+type StatusReport struct {
+	Network     []byte
+	RelayPeerIP byte
+	Remotes     []RemoteStatus
+}
+
+type RemoteStatus struct {
+	PeerIP     byte
+	Up         bool
+	Name       string
+	PublicIP   []byte
+	Port       uint16
+	Relay      bool
+	Server     bool
+	Direct     bool
+	DirectAddr netip.AddrPort
+}
+
+func runStatusServer(g Globals, socketPath string) {
+	_ = os.RemoveAll(socketPath)
+
+	handler := func(w http.ResponseWriter, r *http.Request) {
+		report := StatusReport{
+			Network: g.Network,
+			Remotes: make([]RemoteStatus, 0, 255),
+		}
+
+		relay := g.RelayHandler.Load()
+		if relay != nil {
+			if relayStatus, ok := relay.Status(); ok {
+				report.RelayPeerIP = relayStatus.PeerIP
+			}
+		}
+
+		for i := range g.RemotePeers {
+			remote := g.RemotePeers[i].Load()
+			status, ok := remote.Status()
+			if !ok {
+				continue
+			}
+			report.Remotes = append(report.Remotes, status)
+		}
+
+		json.NewEncoder(w).Encode(report)
+	}
+
+	server := http.Server{
+		Handler: http.HandlerFunc(handler),
+	}
+
+	unixListener, err := net.Listen("unix", socketPath)
+	if err != nil {
+		log.Fatalf("Failed to bind to unix socket: %v", err)
+	}
+	if err := server.Serve(unixListener); err != nil {
+		log.Fatalf("Failed to serve on unix socket: %v", err)
+	}
+}