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99 lines
3.6 KiB
99 lines
3.6 KiB
5 years ago
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//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// See download overview in src/engine/download_internal.h.
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//
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//=======================================================================================//
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#ifndef REQUESTCONTEXT_H
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#define REQUESTCONTEXT_H
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//--------------------------------------------------------------------------------------------------------------
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#include "engine/http.h"
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//--------------------------------------------------------------------------------------------------------------
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enum { BufferSize = 256 }; ///< BufferSize is used extensively within the download system to size char buffers.
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//--------------------------------------------------------------------------------------------------------------
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#ifdef POSIX
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typedef void *LPVOID;
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#endif
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#if defined( _X360 ) || defined( POSIX )
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typedef LPVOID HINTERNET;
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#endif
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//--------------------------------------------------------------------------------------------------------------
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struct RequestContext_t
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{
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inline RequestContext_t()
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{
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memset( this, 0, sizeof( RequestContext_t ) );
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}
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/**
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* The main thread sets this when it wants to abort the download,
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* or it is done reading data from a finished download.
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*/
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bool shouldStop;
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/**
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* The download thread sets this when it is exiting, so the main thread
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* can delete the RequestContext_t.
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*/
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bool threadDone;
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bool bIsBZ2; ///< true if the file is a .bz2 file that should be uncompressed at the end of the download. Set and used by main thread.
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bool bAsHTTP; ///< true if downloaded via HTTP and not ingame protocol. Set and used by main thread
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unsigned int nRequestID; ///< request ID for ingame download
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HTTPStatus_t status; ///< Download thread status
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DWORD fetchStatus; ///< Detailed status info for the download
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HTTPError_t error; ///< Detailed error info
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char baseURL[BufferSize]; ///< Base URL (including http://). Set by main thread.
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char urlPath[BufferSize]; ///< Path to be appended to base URL. Set by main thread.
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char absLocalPath[BufferSize]; ///< Full local path where the file should go. Set by main thread.
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char gamePath[BufferSize]; ///< Game path to be appended to base path. Set by main thread.
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char serverURL[BufferSize]; ///< Server URL (IP:port, loopback, etc). Set by main thread, and used for HTTP Referer header.
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bool bSuppressFileWrite; ///< Set to true by main thread if we do not wish to write the file to disk
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/**
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* The file's timestamp, as returned in the HTTP Last-Modified header.
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* Saved to ensure partial download resumes match the original cached data.
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*/
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char cachedTimestamp[BufferSize];
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DWORD nBytesTotal; ///< Total bytes in the file
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DWORD nBytesCurrent; ///< Current bytes downloaded
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DWORD nBytesCached; ///< Amount of data present in cacheData.
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/**
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* Buffer for the full file data. Allocated/deleted by the download thread
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* (which idles until the data is not needed anymore)
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*/
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unsigned char *data;
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/**
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* Buffer for partial data from previous failed downloads.
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* Allocated/deleted by the main thread (deleted after download thread is done)
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*/
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unsigned char *cacheData;
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// Used purely by the download thread - internal data -------------------
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HINTERNET hOpenResource; ///< Handle created by InternetOpen
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HINTERNET hDataResource; ///< Handle created by InternetOpenUrl
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/**
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* For any user data we may want to attach to a context
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*/
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void *pUserData;
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};
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//--------------------------------------------------------------------------------------------------------------
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#endif // REQUESTCONTEXT_H
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