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Thread: Extra Bytes in OP_ClientUpdate Packets

  1. #1
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    Jan 2011
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    Extra Bytes in OP_ClientUpdate Packets

    I think I've noticed something interesting with OP_ClientUpdate/playerSelfPosStruct packets.

    When a packet contains movement data (as opposed to all delta values being 0), there are 2 extra bytes at the end of the packet, bringing its length to 44. When no movement is involved, the packet is 42 bytes long.

    I figure the additional bytes are a CRC or something along those lines. I'm trying to make sense of it on my end, but I don't really know where to start.

    Have any devs ever looked into this?

  2. #2
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    Jan 2011
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    Re: Extra Bytes in OP_ClientUpdate Packets

    I think this was a red herring.

    I changed my packet scraper to pull the CRC's off of the packets before decoding them, and there are no longer any differences in length of OP_ClientUpdate packets when deltas are or are not present.

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