How to read fragmented messages¶
Problem¶
Your subscription is receiving data from a publication that offers messages larger than maxPayloadLength
, and you want to receive whole messages, not fragments.
Solution¶
Use a FragmentAssembler
in your subscription.
Sample¶
Use a FragmentAssembler
that wraps your FragementHandler
:
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Discussion¶
Aeron automatically fragments outbound messages, but does not automatically reconstruct fragmented messages on the receive path. Using a FragmentAssembler
results in a buffer copy when reading fragmented messages.