From c8c1c3d376715666eb665c6011933b783876201d Mon Sep 17 00:00:00 2001
From: yhirose <yuji.hirose.bug@gmail.com>
Date: Thu, 1 Dec 2022 13:38:58 -0500
Subject: [PATCH] Fix #1442

---
 httplib.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/httplib.h b/httplib.h
index 3b069b0..c32e2de 100644
--- a/httplib.h
+++ b/httplib.h
@@ -255,6 +255,8 @@ using socket_t = int;
 
 #if OPENSSL_VERSION_NUMBER < 0x1010100fL
 #error Sorry, OpenSSL versions prior to 1.1.1 are not supported
+#elif OPENSSL_VERSION_NUMBER < 0x30000000L
+#define SSL_get1_peer_certificate SSL_get_peer_certificate
 #endif
 
 #endif
@@ -7716,7 +7718,7 @@ inline bool SSLClient::initialize_ssl(Socket &socket, Error &error) {
             return false;
           }
 
-          auto server_cert = SSL_get_peer_certificate(ssl2);
+          auto server_cert = SSL_get1_peer_certificate(ssl2);
 
           if (server_cert == nullptr) {
             error = Error::SSLServerVerification;