Called by a client to make a one-time data request. |
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Called by a server to send data to the client. |
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Called by a client to request that the server execute one or more commands. |
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Called by a client to request that an advise state be established. |
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Called by a client to request that an advise state be terminated. |
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Called by a client to send unsolicited data to the server. |
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Called by a client or server to issue an acknowledgment. |