From 5954e22fa1e03125df7c0c55aa003c1076e02f7c Mon Sep 17 00:00:00 2001
From: lijunlong <lijunlong@openresty.com>
Date: Tue, 6 Aug 2024 13:49:02 +0800
Subject: [PATCH] bugfix: fixed keepalive error in cosocket.

Go to https://github.com/openresty/lua-nginx-module/pull/2347 for more details.
---
 src/ngx_stream_lua_socket_tcp.c | 10 ++++++++++
 t/129-ssl-socket.t              | 10 +++++-----
 2 files changed, 15 insertions(+), 5 deletions(-)

diff --git a/src/ngx_stream_lua_socket_tcp.c b/src/ngx_stream_lua_socket_tcp.c
index 9d5472a2..b37c10ba 100644
--- a/src/ngx_stream_lua_socket_tcp.c
+++ b/src/ngx_stream_lua_socket_tcp.c
@@ -5618,6 +5618,16 @@ ngx_stream_lua_socket_keepalive_close_handler(ngx_event_t *ev)
                    "check stale events");
 
     n = recv(c->fd, buf, 1, MSG_PEEK);
+#if (NGX_STREAM_SSL)
+    /* ignore ssl protocol data like change cipher spec */
+    if (n == 1 && c->ssl != NULL) {
+        n = c->recv(c, (unsigned char *) buf, 1);
+        if (n == NGX_AGAIN) {
+            n = -1;
+            ngx_socket_errno = NGX_EAGAIN;
+        }
+    }
+#endif  /* NGX_STREAM_SSL */
 
     if (n == -1 && ngx_socket_errno == NGX_EAGAIN) {
         /* stale event */
diff --git a/t/129-ssl-socket.t b/t/129-ssl-socket.t
index 1a158b17..c3fc2f15 100644
--- a/t/129-ssl-socket.t
+++ b/t/129-ssl-socket.t
@@ -1533,11 +1533,11 @@ set keepalive: 1 nil
 --- grep_error_log eval: qr/stream lua ssl (?:set|save|free) session: [0-9A-F]+/
 --- grep_error_log_out eval
 qr/^stream lua ssl save session: ([0-9A-F]+)
-stream lua ssl save session: \1
-stream lua ssl save session: \1
-stream lua ssl free session: \1
-stream lua ssl free session: \1
-stream lua ssl free session: \1
+stream lua ssl save session: ([0-9A-F]+)
+stream lua ssl save session: ([0-9A-F]+)
+stream lua ssl free session: ([0-9A-F]+)
+stream lua ssl free session: ([0-9A-F]+)
+stream lua ssl free session: ([0-9A-F]+)
 $/
 
 --- error_log