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29 lines
842 B
Plaintext
29 lines
842 B
Plaintext
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[[Category Cache]]
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== Introduction ==
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The 'Ondemand' protocol is used to stream updates to the cache. The client knows which files to update from the CRC file downloaded using the [[Category JAGGRAB Protocol|JAGGRAB protocol]].
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== Request packet ==
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The client first authenticates as an ondemand client by using the opcode '15' (as opposed to the game, which uses the type '14').
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The format of the request is:
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unsigned byte cacheId;
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unsigned short fileId;
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unsigned byte priority;
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There can be multiple requests per session.
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== Response packet ==
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The response is sent in blocks. The maximum size of a block is 500 bytes. Smaller blocks (at the end of a file) are permitted.
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Each block has the format:
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unsigned byte cacheId;
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unsigned short fileId;
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unsigned short fileSize;
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unsigned byte blockNumber;
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unsigned byte[] blockData;
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