I am trying to use BLE in Flutter. I have the following three questions regarding BLE connections:
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At what point in iOS is the ATT MTU negotiation considered complete after a BLE connection is established?
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Is there an official callback or state that indicates the completion of the negotiation?
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Is the value used by iOS during ATT MTU negotiation fixed? If it is fixed, please tell me that value; if it varies, please tell me the conditions under which it varies.
If anyone knows the answer, please let me know.