---
title: "getAvailableCommandResponsePayloadLength(_:)"
framework: IOBluetooth
role: symbol
role_heading: Instance Method
path: "iobluetooth/obexsession/getavailablecommandresponsepayloadlength(_:)"
---

# getAvailableCommandResponsePayloadLength(_:)

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

## Declaration

```swift
func getAvailableCommandResponsePayloadLength(_ inOpCode: OBEXOpCode) -> OBEXMaxPacketLength
```

## Parameters

- `inOpCode`: The opcode you are interested in responding to (as a server).

## Return Value

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

## Discussion

Discussion Each OBEX Command response 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 response’s packet, you can use this function to determine how much data to provide in optional headers or body data headers.