Editing OpenSimulator Internals/Code Map/LLClientView (section)

== Region Handshake ==

SendRegionHandshake() builds the RegionHandshake packet by hand using LLUDPZeroEncoder rather than the generic Packet classes, for performance. Contents: region flags (GetRegionFlags(), a large bitwise translation of RegionSettings/EstateSettings into the wire RegionFlags enum), sim access level, region name, estate owner, water height, billable factor, cache ID, four terrain texture or PBR texture IDs (SupportTerrainPBR flag chooses which), elevation blend values per corner, region ID, CPU class/ratio (hardcoded 9/1), product name, and extended region flags (64-bit) plus a RegionProtocols bitfield (bit 0 = server-side baking supported, bit 63 = more than 6 baked textures supported).

MoveAgentIntoRegion() sends AgentMovementComplete -- also hand-packed -- confirming the avatar's position, look direction, region handle, and simulator version string after CompleteAgentMovement is processed.

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