Add detailed debug logging to tlvExtractorListener.Accept()

Log connection type and TLV extraction details to debug cache population

Signed-off-by: speruri <surya.srikar.peruri@zalando.de>

Author: speruri

proxylistener/proxylistener.go

@@ -2,6 +2,7 @@ package proxylistener
 
 import (
 	"fmt"
+	"log"
 	"net"
 	"net/netip"
 	"sync"
@@ -103,15 +104,26 @@ func (tl *tlvExtractorListener) Accept() (net.Conn, error) {
 		return conn, err
 	}
 
+	log.Printf("[tlvExtractorListener] Accepted conn type: %T, RemoteAddr: %s, LocalAddr: %s", conn, conn.RemoteAddr(), conn.LocalAddr())
+
 	if pconn, ok := conn.(*proxyproto.Conn); ok {
+		log.Printf("[tlvExtractorListener] Got proxyproto.Conn")
 		if header := pconn.ProxyHeader(); header != nil {
+			log.Printf("[tlvExtractorListener] Got ProxyHeader")
 			tlvs, err := header.TLVs()
-			if err == nil {
+			if err != nil {
+				log.Printf("[tlvExtractorListener] Error getting TLVs: %v", err)
+			} else {
 				ssl := hasTLVSSL(tlvs)
 				key := conn.RemoteAddr().String() + "|" + conn.LocalAddr().String()
+				log.Printf("[tlvExtractorListener] Storing SSL=%v for key=%s", ssl, key)
 				proxySSLCache.Store(key, ssl)
 			}
+		} else {
+			log.Printf("[tlvExtractorListener] ProxyHeader is nil")
 		}
+	} else {
+		log.Printf("[tlvExtractorListener] Not a proxyproto.Conn: %T", conn)
 	}
 
 	return &tlvCacheCleanupConn{conn: conn}, nil