72 lines
1.9 KiB
C++
72 lines
1.9 KiB
C++
//-----------------------------------------------------------------------------
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// ___ __ _ _
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// / _ \__ _ _ __ ___ ___ / /(_)_ __ | | __
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// / /_)/ _` | '__/ __|/ _ \/ / | | '_ \| |/ /
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// / ___/ (_| | | \__ \ __/ /__| | | | | <
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// \/ \__,_|_| |___/\___\____/_|_| |_|_|\_\ .
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//
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//-----------------------------------------------------------------------------
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// Author: Kurt Sassenrath
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// Module: Proto
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//
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// Session management for the "user" protocol.
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//
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// Copyright (c) 2023 Kurt Sassenrath.
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//
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// License TBD.
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//-----------------------------------------------------------------------------
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#ifndef session_07eae057feface79
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#define session_07eae057feface79
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#include <tl/expected.hpp>
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#include "parselink/msgpack/token.h"
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#include <cstdint>
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#include <span>
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#include <string>
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namespace parselink {
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namespace proto {
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enum class error {
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system_error,
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incomplete,
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unsupported,
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bad_data,
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too_large,
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};
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// Structure containing header information parsed from a buffer.
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struct header_info {
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std::uint32_t message_size; // Size of the message, minus the header.
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std::uint32_t bytes_read; // How many bytes of the buffer were used.
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};
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class session {
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public:
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session() = default;
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// Parse the protocol header out of a buffer. This is a member function
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// as we may choose to omit data once a session is established.
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tl::expected<header_info, error> parse_header(
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std::span<std::byte const> buffer) noexcept;
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tl::expected<std::monostate, error> handle_connect(
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std::span<msgpack::token> tokens) noexcept;
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// The maximum size of a single message. Should probably depend on whether
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// the session is established or not.
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constexpr static std::uint32_t max_message_size = 128 * 1024;
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std::string user_id;
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private:
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};
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} // namespace proto
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} // namespace parselink
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#endif // session_0c61530748b9f966
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