====== Command History ======
The request is intended to obtain the history of sending commands.

=== Request Example ===
<code php>&svc=get_cmd_history&params={
    "id_unit": integer,
    "from": timestamp,
    "to": timestamp
}</code>

=== Parameters ===
^ Parameter   ^ Description   ^
| id_unit | Unique Unit ID |
| from | Start time of command history |
| to | End time of command history |

=== Additional Information ===
Parameter __to__ is optional. If it is not specified server will take the current date as end time.

=== Server Response ===
== Result: ==
<code php>[
     {
        "id": 1401034, // Record ID of sent command
        "id_unit": 66780, // Unique Unit ID
        "time_cmd": 1517071718, // Command Creation Time
        "time_send": null, // Command Sending Time
        "type_cmd": "tcp_answer", // Command Type
        "text_cmd": "test", // Command Text
        "info": null // Additional Information
    }, 
    ...
]</code>