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| − | This protocol is UDP and bi-directional. It can be thought of as another layer within an application's network layer. [[Subgame]], [[ASSS]], [[Continuum]], VIE's [[SubSpace]] client, the [[Directory server]], and the [[Billing Server]] utilize this protocol, though [[Grelminar]] has designed a TCP Billing Server protocol.
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| − | There is support for reliable ordered packets, large packets and cluster packets.
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| − | *The maximum packet size is 520 bytes
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| − | *All integers are little endian
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| − | *All core packets begin with the type byte 0x00
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| − | <pre>
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| − | 0x01 login
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| − | offset size comment
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| − | 0 1 type 0x00
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| − | 1 1 type 0x01
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| − | 2 4 client key
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| − | 6 2 protocol version (vie = 0x01, ctm = 0x11)
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| − | 0x02 login response
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| − | offset size comment
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| − | 0 1 type 0x00
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| − | 1 1 type 0x02
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| − | 2 4 ~client key (negative)
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| − | 0x03 reliable header
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| − | offset size comment
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| − | 0 1 type 0x00
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| − | 1 1 type 0x03
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| − | 2 4 packet id
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| − | 6 ? payload (514 max)
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| − | 0x04 reliable acknowledge
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| − | offset size comment
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| − | 0 1 type 0x00
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| − | 1 1 type 0x04
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| − | 2 4 packet id
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| − | 0x05 sync
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| − | offset size comment
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| − | 0 1 type 0x00
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| − | 1 1 type 0x05
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| − | 2 4 local time
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| − | 6 4 packets sent
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| − | 10 4 packets received
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| − | 0x06 sync response
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| − | offset size comment
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| − | 0 1 type 0x00
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| − | 1 1 type 0x06
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| − | 2 4 time from last received 0x05 packet
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| − | 6 4 server time
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| − | 0x07 disconnect
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| − | offset size comment
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| − | 0 1 type 0x00
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| − | 1 1 type 0x07
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| − | 0x08 small chunk
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| − | offset size comment
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| − | 0 1 type 0x00
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| − | 1 1 type 0x08
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| − | 2 ? payload (expect 472 max)
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| − | keep appending payloads until 0x09 chunk tail is received
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| − | 0x09 chunk tail
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| − | offset size comment
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| − | 0 1 type 0x00
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| − | 1 1 type 0x09
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| − | 2 ? payload (expect 472 or less)
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| − | append this payload then process contents as a non-core packet
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| − | 0x0A stream
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| − | offset size comment
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| − | 0 1 type 0x00
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| − | 1 1 type 0x0A
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| − | 2 4 total length of all segments
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| − | 6 ? payload (expect 468 max)
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| − | keep appending payloads until total length is reached then process contents as
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| − | a non-core packet.
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| − | 0x0B cancel stream request
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| − | offset size comment
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| − | 0 1 type 0x00
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| − | 1 1 type 0x0B
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| − | 0x0C cancel stream acknowledge
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| − | offset size comment
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| − | 0 1 type 0x00
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| − | 1 1 type 0x0C
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| − | 0x0E cluster
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| − | offset size comment
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| − | 0 1 type 0x00
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| − | 1 1 type 0x0E
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| − | 2 1 length
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| − | 3 ? payload with length as above
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| − | packet repeats from offset 2 until end, process contents as arbitrary packet
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| − | </pre>
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| − | [[Category: Protocol]]
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