3

server/main.go

@@ -20,7 +20,7 @@ import (
 	ws "github.com/user/nanometrics/server/websocket"
 )
 
-const serverVersion = "0.1.0"
+const serverVersion = "0.1.1"
 
 func main() {
 	cfg := config.Load()

server/transport/udp.go

@@ -2,6 +2,7 @@ package transport
 
 import (
 	"encoding/json"
+	"fmt"
 	"log"
 	"net"
 
@@ -17,23 +18,31 @@ func StartUDP(addr string, handler func(*models.AgentMetrics)) error {
 	go func() {
 		buf := make([]byte, 65535)
 		for {
-			n, _, err := conn.ReadFrom(buf)
+			n, src, err := conn.ReadFrom(buf)
 			if err != nil {
 				log.Printf("[udp] erreur lecture: %v", err)
 				continue
 			}
 			data := make([]byte, n)
 			copy(data, buf[:n])
-			go processUDP(data, handler)
+			go processUDP(data, src.String(), handler)
 		}
 	}()
 	return nil
 }
 
-func processUDP(data []byte, handler func(*models.AgentMetrics)) {
+func processUDP(data []byte, src string, handler func(*models.AgentMetrics)) {
 	var m models.AgentMetrics
 	if err := json.Unmarshal(data, &m); err != nil {
-		log.Printf("[udp] JSON invalide: %v", err)
+		preview := ""
+		if len(data) > 0 {
+			end := len(data)
+			if end > 32 {
+				end = 32
+			}
+			preview = fmt.Sprintf(" | src=%s | premiers octets: %x | texte: %q", src, data[:end], data[:end])
+		}
+		log.Printf("[udp] JSON invalide: %v%s", err, preview)
 		return
 	}
 	if m.Hostname == "" {