mirror of
https://github.com/moparisthebest/rswiki-book
synced 2024-11-25 10:32:17 -05:00
29 lines
842 B
Plaintext
29 lines
842 B
Plaintext
|
[[Category Cache]]
|
||
|
|
|
||
|
|
== Introduction ==
|
||
|
|
|
||
|
|
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]].
|
||
|
|
|
||
|
|
== Request packet ==
|
||
|
|
|
||
|
|
The client first authenticates as an ondemand client by using the opcode '15' (as opposed to the game, which uses the type '14').
|
||
|
|
|
||
|
|
The format of the request is:
|
||
|
|
|
||
|
|
unsigned byte cacheId;
|
||
|
|
unsigned short fileId;
|
||
|
|
unsigned byte priority;
|
||
|
|
|
||
|
|
There can be multiple requests per session.
|
||
|
|
|
||
|
|
== Response packet ==
|
||
|
|
|
||
|
|
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.
|
||
|
|
|
||
|
|
Each block has the format:
|
||
|
|
|
||
|
|
unsigned byte cacheId;
|
||
|
|
unsigned short fileId;
|
||
|
|
unsigned short fileSize;
|
||
|
|
unsigned byte blockNumber;
|
||
|
|
unsigned byte[] blockData;
|