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/Net/src/RawSocketImpl.cpp

@@ -0,0 +1,69 @@
+//
+// RawSocketImpl.cpp
+//
+// Library: Net
+// Package: Sockets
+// Module:  RawSocketImpl
+//
+// Copyright (c) 2006, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// SPDX-License-Identifier:	BSL-1.0
+//
+
+
+#include "Poco/Net/RawSocketImpl.h"
+#include "Poco/Net/NetException.h"
+
+
+using Poco::InvalidArgumentException;
+
+
+namespace Poco {
+namespace Net {
+
+
+RawSocketImpl::RawSocketImpl()
+{
+	init(AF_INET);
+}
+
+
+RawSocketImpl::RawSocketImpl(SocketAddress::Family family, int proto)
+{
+	if (family == SocketAddress::IPv4)
+		init2(AF_INET, proto);
+#if defined(POCO_HAVE_IPv6)
+	else if (family == SocketAddress::IPv6)
+		init2(AF_INET6, proto);
+#endif
+	else throw InvalidArgumentException("Invalid or unsupported address family passed to RawSocketImpl");
+
+}
+
+	
+RawSocketImpl::RawSocketImpl(poco_socket_t sockfd): 
+	SocketImpl(sockfd)
+{
+}
+
+
+RawSocketImpl::~RawSocketImpl()
+{
+}
+
+
+void RawSocketImpl::init(int af)
+{
+	init2(af, IPPROTO_RAW);
+}
+
+
+void RawSocketImpl::init2(int af, int proto)
+{
+	initSocket(af, SOCK_RAW, proto);
+	setOption(IPPROTO_IP, IP_HDRINCL, 0);
+}
+
+
+} } // namespace Poco::Net