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119 lines
3.0 KiB
C++
119 lines
3.0 KiB
C++
#ifndef LLARP_EXIT_SESSION_HPP
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#define LLARP_EXIT_SESSION_HPP
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#include <ip.hpp>
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#include <messages/exit.hpp>
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#include <messages/transfer_traffic.hpp>
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#include <pathbuilder.hpp>
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#include <deque>
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namespace llarp
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{
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namespace exit
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{
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/// a persisiting exit session with an exit router
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struct BaseSession : public llarp::path::Builder
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{
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static constexpr size_t MaxUpstreamQueueLength = 256;
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BaseSession(const llarp::RouterID& exitRouter,
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std::function< bool(llarp_buffer_t) > writepkt,
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llarp::Router* r, size_t numpaths, size_t hoplen);
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virtual ~BaseSession();
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bool
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SelectHop(llarp_nodedb* db, const RouterContact& prev, RouterContact& cur,
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size_t hop, llarp::path::PathRole roles) override;
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bool
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ShouldBuildMore(llarp_time_t now) const override;
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void
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HandlePathBuilt(llarp::path::Path* p) override;
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bool
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QueueUpstreamTraffic(llarp::net::IPv4Packet pkt, const size_t packSize);
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bool
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FlushUpstreamTraffic();
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bool
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IsReady() const;
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const llarp::RouterID
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Endpoint() const
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{
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return m_ExitRouter;
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}
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protected:
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llarp::RouterID m_ExitRouter;
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std::function< bool(llarp_buffer_t) > m_WritePacket;
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virtual void
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PopulateRequest(llarp::routing::ObtainExitMessage& msg) const = 0;
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bool
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HandleTrafficDrop(llarp::path::Path* p, const llarp::PathID_t& path,
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uint64_t s);
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bool
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HandleGotExit(llarp::path::Path* p, llarp_time_t b);
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bool
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HandleTraffic(llarp::path::Path* p, llarp_buffer_t buf);
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private:
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using UpstreamTrafficQueue_t =
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std::deque< llarp::routing::TransferTrafficMessage >;
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using TieredQueue_t = std::map< uint8_t, UpstreamTrafficQueue_t >;
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TieredQueue_t m_Upstream;
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uint64_t m_Counter;
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llarp::SecretKey m_ExitIdentity;
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};
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struct ExitSession final : public BaseSession
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{
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ExitSession(const llarp::RouterID& snodeRouter,
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std::function< bool(llarp_buffer_t) > writepkt,
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llarp::Router* r, size_t numpaths, size_t hoplen)
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: BaseSession(snodeRouter, writepkt, r, numpaths, hoplen){};
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~ExitSession(){};
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protected:
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virtual void
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PopulateRequest(llarp::routing::ObtainExitMessage& msg) const override
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{
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// TODO: set expiration time
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msg.X = 0;
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msg.E = 1;
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}
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};
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struct SNodeSession final : public BaseSession
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{
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SNodeSession(const llarp::RouterID& snodeRouter,
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std::function< bool(llarp_buffer_t) > writepkt,
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llarp::Router* r, size_t numpaths, size_t hoplen)
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: BaseSession(snodeRouter, writepkt, r, numpaths, hoplen){};
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~SNodeSession(){};
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protected:
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void
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PopulateRequest(llarp::routing::ObtainExitMessage& msg) const override
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{
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// TODO: set expiration time
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msg.X = 0;
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msg.E = 0;
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}
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};
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} // namespace exit
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} // namespace llarp
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#endif
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