87 lines
2.6 KiB
C++
87 lines
2.6 KiB
C++
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#ifndef PORT_DISPATCHER_HPP_YZ0UTAUF
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#define PORT_DISPATCHER_HPP_YZ0UTAUF
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#include <vanetza/btp/data_interface.hpp>
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#include <vanetza/btp/header.hpp>
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#include <vanetza/common/hook.hpp>
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#include <vanetza/geonet/transport_interface.hpp>
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#include <vanetza/net/packet.hpp>
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#include <list>
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#include <unordered_map>
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namespace vanetza
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{
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namespace btp
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{
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class PortDispatcher : public geonet::TransportInterface
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{
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public:
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class PromiscuousHook
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{
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public:
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/**
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* Called when a BTP packet is received, regardless of its destination port
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* \param indication BTP data indication
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* \param packet Read-only view of packet
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*/
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virtual void tap_packet(const DataIndication&, const UpPacket&) = 0;
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virtual ~PromiscuousHook() {}
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};
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/**
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* Register a handler for incoming BTP-A (interactive) packets
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* \param port BTP-A destination port
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* \param interface Handler for given destination port
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* \note Use a nullptr as handler to disable dispatching of destination port
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* \note Only one handler can be registered per port
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*/
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void set_interactive_handler(port_type, IndicationInterface*);
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/**
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* Register a handler for incoming BTP-B (non-interactive) packets
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* \param port BTP-B destination port
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* \param interface Handler for given destination port
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* \note Use a nullptr as handler to disable dispatching of destination port
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* \note Only one handler can be registered per port
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*/
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void set_non_interactive_handler(port_type, IndicationInterface*);
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/**
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* Add a hook listening for all incoming BTP packets
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* \param hook A hook implementing the promiscuous hook interface
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* \note Each registered hook is invoked only once per indication
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*/
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void add_promiscuous_hook(PromiscuousHook* hook);
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/**
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* Remove promiscuous hook
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* \param hook pointer to previously added hook
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*/
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void remove_promiscuous_hook(PromiscuousHook*);
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// Implementation of geonet::TransportInterface
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void indicate(const geonet::DataIndication&, std::unique_ptr<UpPacket>) override;
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/**
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* Hook invoked for all indicated but undispatched packets
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* \note BTP data indication can be nullptr
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*/
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Hook<const geonet::DataIndication&, const btp::DataIndication*> hook_undispatched;
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private:
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typedef std::unordered_map<port_type, IndicationInterface*> port_map;
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typedef std::list<PromiscuousHook*> hook_list;
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port_map m_interactive_handlers;
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port_map m_non_interactive_handlers;
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hook_list m_promiscuous_hooks;
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};
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} // namespace btp
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} // namespace vanetza
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#endif /* PORT_DISPATCHER_HPP_YZ0UTAUF */
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