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# getAvailableCommandPayloadLength(_:)

Determine the maximum amount of data you can send in a particular command as an OBEX client session.

```
func getAvailableCommandPayloadLength(_ inOpCode: OBEXOpCode) -> OBEXMaxPacketLength
```

## Parameters

`inOpCode`

The opcode you are interested in sending (as a client).

## Return Value

The maximum amount of data a particular packet can handle, after accounting for any command overhead.

## Discussion

Each OBEX Command has a certain amount of overhead. Since the negotiated max packet length does not indicate what the maximum data amount you can send in a particular command’s packet, you can use this function to determine how much data to provide in optional headers or body data headers.

---

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