Server-switching Packet

[anhcraft]

A type of client-bound packet that allows a server to request a server switch.

Workflow

• Server A sends a request to client P for a switch to server B

server_B_ip:server_B_port
metadata

• Client P tries to connect to server B
• If failed (due to any error), an error is sent back to server A

error_msg

• If success, no response will be sent to server A
• Client P will try to send metadata to server B

metadata

• If Tensai is installed in server B, the metadata will be read

Metadata

• The metadata is a convenient way to exchange client data between server A and server B
• It can contain a reference to point out the previous server

Draft packets

• Server-switch Request Packet: send from server A to client
• Server-switch Exception Packet: send from client to server A
• Server-switch Exchange Packet: send from client to server B, when play networking channel is ready

Detection

• Whether a request is failed: using Server-switch Exception Packet
• Whether a request is success: impossible (since the connection to server A is closed once switching to server B)
• Whether the player switched from another server: using Server-switch Exchange Packet