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```mermaid
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```mermaid
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sequenceDiagram
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sequenceDiagram
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        participant "Device" as Dev
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        participant Dev as "Device
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	participant "Device TCP Session" as Dev_TCP
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	participant Dev_TCP as "Device TCP Session"
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	participant "D2Sphere TCP Session" as D2S_TCP
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	participant D2S_TCP as "D2Sphere TCP Session"
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	... create D2Sphere TCP conncetion ...
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	... create D2Sphere TCP conncetion ...
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	Dev -> Dev_TCP : create TCP session
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	Dev -> Dev_TCP : create TCP session
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	Dev_TCP -> D2S_TCP : sent Login plain contains uuid/IMEI and used enryption mode
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	Dev_TCP -> D2S_TCP : sent Login plain contains uuid/IMEI and used enryption mode
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