From 0eb2e1b3b3235667b93637c6839739d4a8ffbcab Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?G=C3=BCnter=20Obiltschnig?= <guenter.obiltschnig@appinf.com>
Date: Sun, 24 Nov 2024 21:04:37 +0100
Subject: [PATCH] fix(NetSSL): handle EWOULDBLOCK when calling SSL_shutdown()

---
 NetSSL_OpenSSL/src/SecureSocketImpl.cpp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/NetSSL_OpenSSL/src/SecureSocketImpl.cpp b/NetSSL_OpenSSL/src/SecureSocketImpl.cpp
index a68cb917a..ce03396e8 100644
--- a/NetSSL_OpenSSL/src/SecureSocketImpl.cpp
+++ b/NetSSL_OpenSSL/src/SecureSocketImpl.cpp
@@ -264,7 +264,13 @@ int SecureSocketImpl::shutdown()
 		if (!shutdownSent)
 		{
 			int rc = ::SSL_shutdown(_pSSL);
-			if (rc < 0) rc = handleError(rc);
+			if (rc < 0) 
+			{
+				if (SocketImpl::lastError() == POCO_EWOULDBLOCK)
+					rc = SecureStreamSocket::ERR_SSL_WANT_WRITE;
+				else
+					rc = handleError(rc);
+			}
 
 			l.unlock();