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// Copyright Epic Games, Inc. All Rights Reserved.
#pragma once
#if ZEN_WITH_HTTPSYS
# define _WINSOCKAPI_
# include <zencore/windows.h>
# include <cstdint>
namespace zen {
/**
* Tagged OVERLAPPED wrapper for http.sys IOCP dispatch
*
* Both HttpSysTransaction (for normal HTTP request I/O) and WsHttpSysConnection
* (for WebSocket read/write) embed this struct. The single IoCompletionCallback
* bound to the request queue uses the ContextType tag to dispatch to the correct
* handler.
*
* The Overlapped member must be first so that CONTAINING_RECORD works to recover
* the HttpSysIoContext from the OVERLAPPED pointer provided by the threadpool.
*/
struct HttpSysIoContext
{
OVERLAPPED Overlapped{};
enum class Type : uint8_t
{
kTransaction,
kWebSocketRead,
kWebSocketWrite,
} ContextType = Type::kTransaction;
void* Owner = nullptr;
};
} // namespace zen
#endif // ZEN_WITH_HTTPSYS
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