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https://github.com/oxen-io/lokinet.git
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38fd0552d3
Success case:
- the path endpoint creates and sends a LR_StatusMessage upon
successful path creation
Failure case:
- an intermediate hop creates and sends a LR_StatusMessage upon
failure to forward the path to the next hop for any reason
Both cases:
- transit hops receive LR_StatusMessages and add a frame
to them reflecting their "status" with respect to that path
- the path creator receives LR_StatusMessages and decrypts/parses
the LR_StatusRecord frames from the path hops. If all is good,
the Path does as it would when receiving a PathConfirmMessage.
If not, the Path marks the new path as failed.
LR_StatusMessage is now used/sent in place of PathConfirmMessage
108 lines
2.4 KiB
C++
108 lines
2.4 KiB
C++
#ifndef LLARP_RELAY_STATUS_HPP
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#define LLARP_RELAY_STATUS_HPP
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#include <crypto/encrypted_frame.hpp>
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#include <crypto/types.hpp>
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#include <messages/link_message.hpp>
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#include <path/path_types.hpp>
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#include <pow.hpp>
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#include <array>
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#include <memory>
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namespace llarp
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{
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// forward declare
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struct AbstractRouter;
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namespace path
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{
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struct PathContext;
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struct IHopHandler;
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} // namespace path
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struct LR_StatusRecord
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{
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static constexpr uint64_t SUCCESS = 1;
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static constexpr uint64_t FAIL_TIMEOUT = 1 << 1;
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static constexpr uint64_t FAIL_CONGESTION = 1 << 2;
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static constexpr uint64_t FAIL_DEST_UNKNOWN = 1 << 3;
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static constexpr uint64_t FAIL_DECRYPT_ERROR = 1 << 4;
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static constexpr uint64_t FAIL_MALFORMED_RECORD = 1 << 5;
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static constexpr uint64_t FAIL_DEST_INVALID = 1 << 6;
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static constexpr uint64_t FAIL_CANNOT_CONNECT = 1 << 7;
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uint64_t status = 0;
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uint64_t version = 0;
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bool
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BDecode(llarp_buffer_t *buf);
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bool
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BEncode(llarp_buffer_t *buf) const;
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bool
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operator==(const LR_StatusRecord &other) const;
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private:
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bool
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OnKey(llarp_buffer_t *buffer, llarp_buffer_t *key);
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};
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struct LR_StatusMessage : public ILinkMessage
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{
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std::array< EncryptedFrame, 8 > frames;
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PathID_t pathid;
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uint64_t status = 0;
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LR_StatusMessage(const std::array< EncryptedFrame, 8 > &_frames)
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: ILinkMessage(), frames(_frames)
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{
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}
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LR_StatusMessage() = default;
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~LR_StatusMessage() = default;
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void
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Clear() override;
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bool
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DecodeKey(const llarp_buffer_t &key, llarp_buffer_t *buf) override;
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bool
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BEncode(llarp_buffer_t *buf) const override;
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bool
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HandleMessage(AbstractRouter *router) const override;
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void
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SetDummyFrames();
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static bool
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CreateAndSend(AbstractRouter *router, const PathID_t pathid,
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const RouterID nextHop, const SharedSecret pathKey,
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uint64_t status);
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bool
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AddFrame(const SharedSecret &pathKey, uint64_t status);
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static void
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QueueSendMessage(AbstractRouter *router, const RouterID nextHop,
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std::shared_ptr< LR_StatusMessage > msg);
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static void
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SendMessage(AbstractRouter *router, const RouterID nextHop,
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std::shared_ptr< LR_StatusMessage > msg);
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const char *
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Name() const override
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{
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return "RelayStatus";
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}
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};
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} // namespace llarp
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#endif
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