no.nordicsemi.android.ble.data

Class DefaultMtuSplitter

java.lang.Object

no.nordicsemi.android.ble.data.DefaultMtuSplitter

All Implemented Interfaces:

DataSplitter

public final class DefaultMtuSplitter
extends java.lang.Object
implements DataSplitter

Splits the message into at-most MTU-3 size packets.

Constructor Summary

Constructors

Constructor and Description
DefaultMtuSplitter()

Method Summary

Modifier and Type	Method and Description
byte[]	chunk(byte[] message, int index, int maxLength) The implementation should return a index'th byte array from given message, with at most maxLength size, or null if no bytes are left to be sent.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DefaultMtuSplitter

public DefaultMtuSplitter()

Method Detail

chunk

@Nullable
public byte[] chunk(@NonNull
                               byte[] message,
                               int index,
                               int maxLength)

Description copied from interface: DataSplitter

The implementation should return a index'th byte array from given message, with at most maxLength size, or null if no bytes are left to be sent.

Specified by:

chunk in interface DataSplitter

Parameters:

message - the full message to be chunk.

index - index of a packet, 0-based.

maxLength - maximum length of the returned packet. Equals to MTU-3. Use BleManager.requestMtu(int) to request higher MTU, or BleManager.overrideMtu(int) If the MTU change was initiated by the target device.

Returns:

The packet to be sent, or null, if the whole message was already split.