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replay/cl_sessioninfodownloader.h

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+//----------------------------------------------------------------------------------------
+
+#ifndef SESSIONINFODOWNLOADER_H
+#define SESSIONINFODOWNLOADER_H
+#ifdef _WIN32
+#pragma once
+#endif
+
+//----------------------------------------------------------------------------------------
+
+#include "basethinker.h"
+#include "cl_downloader.h"
+
+//----------------------------------------------------------------------------------------
+
+class CHttpDownloader;
+class CBaseRecordingSession;
+
+//----------------------------------------------------------------------------------------
+
+class CSessionInfoDownloader : public CBaseThinker,
+							   public IDownloadHandler
+{
+public:
+	CSessionInfoDownloader();
+	~CSessionInfoDownloader();
+
+	void					CleanupDownloader();
+
+	void					DownloadSessionInfoAndUpdateBlocks( CBaseRecordingSession *pSession );
+
+	bool					IsDone() const		{ return m_bDone; }
+	bool					CanDelete() const	{ return m_pDownloader == NULL; }
+
+	enum ServerSessionInfoError_t
+	{
+		ERROR_NONE,							// No error
+		ERROR_NOT_ENOUGH_DATA,				// The session info file wasn't even big enough to read a header
+		ERROR_BAD_NUM_BLOCKS,				// The "nb" field either didn't exist or was invalid - there should always been at least one block by the time we're downloading
+		ERROR_REPLAY_NOT_FOUND,				// The server index was downloaded but the replay was not found
+		ERROR_INVALID_REPLAY_STATUS,		// The server index was downloaded and the replay was found, but it had an invalid status
+		ERROR_INVALID_ORDER,				// The server index was downloaded and the replay was found, but it had an invalid reconstruction order (-1)
+		ERROR_NO_SESSION_NAME,				// No session name for entry
+		ERROR_UNKNOWN_SESSION,				// The session info file points to a session (via its name) that the client doesn't know about
+		ERROR_DOWNLOAD_FAILED,				// The session file failed to download
+		ERROR_BLOCK_READ_FAILED,			// Failed to read a block - most likely an overflow
+		ERROR_COULD_NOT_CREATE_COMPRESSOR,	// Could not create the ICompressor to decompress the payload
+		ERROR_INVALID_UNCOMPRESSED_SIZE,	// Uncompressed size was not large enough to read at least one block
+		ERROR_PAYLOAD_DECOMPRESS_FAILED,	// Decompression of the payload failed
+		ERROR_PAYLOAD_HASH_FAILED,			// Used MD5 digest from header on payload and failed
+	};
+
+	ServerSessionInfoError_t	m_nError;
+	HTTPError_t					m_nHttpError;
+
+private:
+	//
+	// CBaseThinker
+	//
+	float					GetNextThinkTime() const;
+	void					Think();
+
+	//
+	// IDownloadHandler
+	//
+	virtual void			OnConnecting( CHttpDownloader *pDownloader ) {}
+	virtual void			OnFetch( CHttpDownloader *pDownloader ) {}
+	virtual void			OnDownloadComplete( CHttpDownloader *pDownloader, const unsigned char *pData );
+
+	const char				*GetErrorString( int nError, HTTPError_t nHttpError ) const;
+
+	const CBaseRecordingSession	*m_pSession;
+	CHttpDownloader			*m_pDownloader;
+	bool					m_bDone;
+	float					m_flLastDownloadTime;
+};
+
+//----------------------------------------------------------------------------------------
+
+#endif // SESSIONINFODOWNLOADER_H