---
title: sendBufferTroughChannel()
framework: IOBluetooth
role: symbol
role_heading: Instance Method
path: iobluetooth/iobluetoothobexsession/sendbuffertroughchannel()
---

# sendBufferTroughChannel()

Sends the next block of data through the rfcomm channel.

## Declaration

```swift
func sendBufferTroughChannel() -> IOReturn
```

## Discussion

Discussion Since a send in the rfcomm channel is broken in multiple write calls (this actually is true only if the size is grater than the rfcomm MTU). Each write call is performed by sendBufferTroughChannel. This should never need to be overwritten.