diff --git a/internal/server/util_test.go b/internal/server/util_test.go
index 32aa6886..d8e306e0 100644
--- a/internal/server/util_test.go
+++ b/internal/server/util_test.go
@@ -5,7 +5,9 @@ package server
 
 import (
 	"net"
+	"os"
 	"testing"
+	"time"
 
 	"github.com/pion/stun/v3"
 	"github.com/pion/turn/v4/internal/proto"
@@ -41,7 +43,7 @@ func TestAuthenticateRequest(t *testing.T) {
 		r = &Request{
 			Conn:    conn,
 			SrcAddr: srcAddr,
-			AuthHandler: func(username, realm string, srcAddr net.Addr) (key []byte, ok bool) {
+			AuthHandler: func(username, realm string, _ net.Addr) (key []byte, ok bool) {
 				return testMsgIntegrity, username == testUsername && realm == testRealm
 			},
 			NonceHash: nonceHash,
@@ -58,6 +60,37 @@ func TestAuthenticateRequest(t *testing.T) {
 		}
 	}
 
+	checkSTUNAllocateErrorResponse := func(t *testing.T) stun.ErrorCode {
+		// Set read deadline to avoid blocking for a long time
+		err := conn.SetReadDeadline(time.Now().Add(10 * time.Millisecond))
+		require.NoError(t, err)
+
+		// Check the error response
+		buf := make([]byte, 1024)
+		n, _, err := conn.ReadFrom(buf)
+		require.NoError(t, err)
+
+		resp := &stun.Message{}
+		err = resp.UnmarshalBinary(buf[:n])
+		require.NoError(t, err)
+		require.Equal(t, stun.NewType(stun.MethodAllocate, stun.ClassErrorResponse), resp.Type)
+		var attrErrorCode stun.ErrorCodeAttribute
+		err = attrErrorCode.GetFrom(resp)
+		require.NoError(t, err)
+		return attrErrorCode.Code
+	}
+
+	checkNoSTUNResponse := func(t *testing.T) {
+		// Set read deadline to avoid blocking for a long time
+		err := conn.SetReadDeadline(time.Now().Add(time.Millisecond))
+		require.NoError(t, err)
+
+		// Check the error response
+		buf := make([]byte, 1024)
+		_, _, err = conn.ReadFrom(buf)
+		require.ErrorIs(t, err, os.ErrDeadlineExceeded)
+	}
+
 	t.Run("auth success", func(t *testing.T) {
 		tearDown := setUp(t, options{})
 		defer tearDown()
@@ -78,6 +111,8 @@ func TestAuthenticateRequest(t *testing.T) {
 		require.True(t, authResult.hasAuth)
 		require.Equal(t, testRealm, authResult.realm, "Realm value should be present in the result")
 		require.Equal(t, testUsername, authResult.username, "Username value should be present in the result")
+
+		checkNoSTUNResponse(t)
 	})
 
 	t.Run("no message integrity", func(t *testing.T) {
@@ -100,18 +135,8 @@ func TestAuthenticateRequest(t *testing.T) {
 		require.False(t, authResult.hasAuth)
 
 		// Check the error response
-		buf := make([]byte, 1024)
-		n, _, err := conn.ReadFrom(buf)
-		require.NoError(t, err)
-
-		var resp stun.Message
-		err = resp.UnmarshalBinary(buf[:n])
-		require.NoError(t, err)
-		require.Equal(t, stun.NewType(stun.MethodAllocate, stun.ClassErrorResponse), resp.Type)
-		var attrErrorCode stun.ErrorCodeAttribute
-		err = attrErrorCode.GetFrom(&resp)
-		require.NoError(t, err)
-		require.Equal(t, stun.CodeUnauthorised, attrErrorCode.Code)
+		errorCode := checkSTUNAllocateErrorResponse(t)
+		require.Equal(t, stun.CodeUnauthorized, errorCode)
 	})
 
 	t.Run("no auth handler", func(t *testing.T) {
@@ -134,18 +159,8 @@ func TestAuthenticateRequest(t *testing.T) {
 		require.False(t, authResult.hasAuth)
 
 		// Check the error response
-		buf := make([]byte, 1024)
-		n, _, err := conn.ReadFrom(buf)
-		require.NoError(t, err)
-
-		var resp stun.Message
-		err = resp.UnmarshalBinary(buf[:n])
-		require.NoError(t, err)
-		require.Equal(t, stun.NewType(stun.MethodAllocate, stun.ClassErrorResponse), resp.Type)
-		var attrErrorCode stun.ErrorCodeAttribute
-		err = attrErrorCode.GetFrom(&resp)
-		require.NoError(t, err)
-		require.Equal(t, stun.CodeBadRequest, attrErrorCode.Code)
+		errorCode := checkSTUNAllocateErrorResponse(t)
+		require.Equal(t, stun.CodeBadRequest, errorCode)
 	})
 
 	t.Run("no nonce", func(t *testing.T) {
@@ -168,18 +183,8 @@ func TestAuthenticateRequest(t *testing.T) {
 		require.False(t, authResult.hasAuth)
 
 		// Check the error response
-		buf := make([]byte, 1024)
-		n, _, err := conn.ReadFrom(buf)
-		require.NoError(t, err)
-
-		var resp stun.Message
-		err = resp.UnmarshalBinary(buf[:n])
-		require.NoError(t, err)
-		require.Equal(t, stun.NewType(stun.MethodAllocate, stun.ClassErrorResponse), resp.Type)
-		var attrErrorCode stun.ErrorCodeAttribute
-		err = attrErrorCode.GetFrom(&resp)
-		require.NoError(t, err)
-		require.Equal(t, stun.CodeBadRequest, attrErrorCode.Code)
+		errorCode := checkSTUNAllocateErrorResponse(t)
+		require.Equal(t, stun.CodeBadRequest, errorCode)
 	})
 
 	t.Run("invalid nonce", func(t *testing.T) {
@@ -202,18 +207,8 @@ func TestAuthenticateRequest(t *testing.T) {
 		require.False(t, authResult.hasAuth)
 
 		// Check the error response
-		buf := make([]byte, 1024)
-		n, _, err := conn.ReadFrom(buf)
-		require.NoError(t, err)
-
-		var resp stun.Message
-		err = resp.UnmarshalBinary(buf[:n])
-		require.NoError(t, err)
-		require.Equal(t, stun.NewType(stun.MethodAllocate, stun.ClassErrorResponse), resp.Type)
-		var attrErrorCode stun.ErrorCodeAttribute
-		err = attrErrorCode.GetFrom(&resp)
-		require.NoError(t, err)
-		require.Equal(t, stun.CodeStaleNonce, attrErrorCode.Code)
+		errorCode := checkSTUNAllocateErrorResponse(t)
+		require.Equal(t, stun.CodeStaleNonce, errorCode)
 	})
 
 	t.Run("no realm", func(t *testing.T) {
@@ -236,18 +231,8 @@ func TestAuthenticateRequest(t *testing.T) {
 		require.False(t, authResult.hasAuth)
 
 		// Check the error response
-		buf := make([]byte, 1024)
-		n, _, err := conn.ReadFrom(buf)
-		require.NoError(t, err)
-
-		var resp stun.Message
-		err = resp.UnmarshalBinary(buf[:n])
-		require.NoError(t, err)
-		require.Equal(t, stun.NewType(stun.MethodAllocate, stun.ClassErrorResponse), resp.Type)
-		var attrErrorCode stun.ErrorCodeAttribute
-		err = attrErrorCode.GetFrom(&resp)
-		require.NoError(t, err)
-		require.Equal(t, stun.CodeBadRequest, attrErrorCode.Code)
+		errorCode := checkSTUNAllocateErrorResponse(t)
+		require.Equal(t, stun.CodeBadRequest, errorCode)
 	})
 
 	t.Run("no username", func(t *testing.T) {
@@ -270,18 +255,8 @@ func TestAuthenticateRequest(t *testing.T) {
 		require.False(t, authResult.hasAuth)
 
 		// Check the error response
-		buf := make([]byte, 1024)
-		n, _, err := conn.ReadFrom(buf)
-		require.NoError(t, err)
-
-		var resp stun.Message
-		err = resp.UnmarshalBinary(buf[:n])
-		require.NoError(t, err)
-		require.Equal(t, stun.NewType(stun.MethodAllocate, stun.ClassErrorResponse), resp.Type)
-		var attrErrorCode stun.ErrorCodeAttribute
-		err = attrErrorCode.GetFrom(&resp)
-		require.NoError(t, err)
-		require.Equal(t, stun.CodeBadRequest, attrErrorCode.Code)
+		errorCode := checkSTUNAllocateErrorResponse(t)
+		require.Equal(t, stun.CodeBadRequest, errorCode)
 	})
 
 	t.Run("unknown username", func(t *testing.T) {
@@ -304,18 +279,8 @@ func TestAuthenticateRequest(t *testing.T) {
 		require.False(t, authResult.hasAuth)
 
 		// Check the error response
-		buf := make([]byte, 1024)
-		n, _, err := conn.ReadFrom(buf)
-		require.NoError(t, err)
-
-		var resp stun.Message
-		err = resp.UnmarshalBinary(buf[:n])
-		require.NoError(t, err)
-		require.Equal(t, stun.NewType(stun.MethodAllocate, stun.ClassErrorResponse), resp.Type)
-		var attrErrorCode stun.ErrorCodeAttribute
-		err = attrErrorCode.GetFrom(&resp)
-		require.NoError(t, err)
-		require.Equal(t, stun.CodeBadRequest, attrErrorCode.Code)
+		errorCode := checkSTUNAllocateErrorResponse(t)
+		require.Equal(t, stun.CodeBadRequest, errorCode)
 	})
 
 	t.Run("invalid message integrity", func(t *testing.T) {
@@ -338,17 +303,7 @@ func TestAuthenticateRequest(t *testing.T) {
 		require.False(t, authResult.hasAuth)
 
 		// Check the error response
-		buf := make([]byte, 1024)
-		n, _, err := conn.ReadFrom(buf)
-		require.NoError(t, err)
-
-		var resp stun.Message
-		err = resp.UnmarshalBinary(buf[:n])
-		require.NoError(t, err)
-		require.Equal(t, stun.NewType(stun.MethodAllocate, stun.ClassErrorResponse), resp.Type)
-		var attrErrorCode stun.ErrorCodeAttribute
-		err = attrErrorCode.GetFrom(&resp)
-		require.NoError(t, err)
-		require.Equal(t, stun.CodeBadRequest, attrErrorCode.Code)
+		errorCode := checkSTUNAllocateErrorResponse(t)
+		require.Equal(t, stun.CodeBadRequest, errorCode)
 	})
 }