From 41b5ab0f495b084e8cf25371642eb23f22bcf028 Mon Sep 17 00:00:00 2001
From: Azat Khuzhin <azat@libevent.org>
Date: Sun, 19 Sep 2021 00:39:30 +0300
Subject: [PATCH] bufferevent_ssl: check return value of the evbuffer_drain()

Refs: #1163
---
 bufferevent_ssl.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/bufferevent_ssl.c b/bufferevent_ssl.c
index a946c162..837b84c4 100644
--- a/bufferevent_ssl.c
+++ b/bufferevent_ssl.c
@@ -385,7 +385,9 @@ do_write(struct bufferevent_ssl *bev_ssl, int atmost)
 		}
 	}
 	if (n_written) {
-		evbuffer_drain(output, n_written);
+		if (evbuffer_drain(output, n_written))
+			return OP_ERR | result;
+
 		if (bev_ssl->underlying)
 			BEV_RESET_GENERIC_WRITE_TIMEOUT(bev);