Major plugin refactor and cleanup.

Switched to POCO library for unified platform/library interface.
Deprecated the external module API. It was creating more problems than solving.
Removed most built-in libraries in favor of system libraries for easier maintenance.
Cleaned and secured code with help from static analyzers.

vendor/POCO/NetSSL_Win/src/SecureServerSocketImpl.cpp

@@ -0,0 +1,115 @@
+//
+// SecureServerSocketImpl.cpp
+//
+// Library: NetSSL_Win
+// Package: SSLSockets
+// Module:  SecureServerSocketImpl
+//
+// Copyright (c) 2006-2014, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// SPDX-License-Identifier:	BSL-1.0
+//
+
+
+#include "Poco/Net/SecureServerSocketImpl.h"
+
+
+namespace Poco {
+namespace Net {
+
+
+SecureServerSocketImpl::SecureServerSocketImpl(Context::Ptr pContext):
+	_impl(new ServerSocketImpl, pContext)
+{
+}
+
+
+SecureServerSocketImpl::~SecureServerSocketImpl()
+{
+	reset();
+}
+
+
+SocketImpl* SecureServerSocketImpl::acceptConnection(SocketAddress& clientAddr)
+{
+	return _impl.acceptConnection(clientAddr);
+}
+
+
+void SecureServerSocketImpl::connect(const SocketAddress& address)
+{
+	throw Poco::InvalidAccessException("Cannot connect() a SecureServerSocket");
+}
+
+
+void SecureServerSocketImpl::connect(const SocketAddress& address, const Poco::Timespan& timeout)
+{
+	throw Poco::InvalidAccessException("Cannot connect() a SecureServerSocket");
+}
+	
+
+void SecureServerSocketImpl::connectNB(const SocketAddress& address)
+{
+	throw Poco::InvalidAccessException("Cannot connect() a SecureServerSocket");
+}
+	
+
+void SecureServerSocketImpl::bind(const SocketAddress& address, bool reuseAddress)
+{
+	_impl.bind(address, reuseAddress);
+	reset(_impl.sockfd());
+}
+
+	
+void SecureServerSocketImpl::listen(int backlog)
+{
+	_impl.listen(backlog);
+	reset(_impl.sockfd());
+}
+	
+
+void SecureServerSocketImpl::close()
+{
+	reset();
+	_impl.close();
+}
+	
+
+int SecureServerSocketImpl::sendBytes(const void* buffer, int length, int flags)
+{
+	throw Poco::InvalidAccessException("Cannot sendBytes() on a SecureServerSocket");
+}
+
+
+int SecureServerSocketImpl::receiveBytes(void* buffer, int length, int flags)
+{
+	throw Poco::InvalidAccessException("Cannot receiveBytes() on a SecureServerSocket");
+}
+
+
+int SecureServerSocketImpl::sendTo(const void* buffer, int length, const SocketAddress& address, int flags)
+{
+	throw Poco::InvalidAccessException("Cannot sendTo() on a SecureServerSocket");
+}
+
+
+int SecureServerSocketImpl::receiveFrom(void* buffer, int length, SocketAddress& address, int flags)
+{
+	throw Poco::InvalidAccessException("Cannot receiveFrom() on a SecureServerSocket");
+}
+
+
+void SecureServerSocketImpl::sendUrgent(unsigned char data)
+{
+	throw Poco::InvalidAccessException("Cannot sendUrgent() on a SecureServerSocket");
+}
+
+
+bool SecureServerSocketImpl::secure() const
+{
+	return true;
+}
+
+
+} } // namespace Poco::Net