I'm using lwip MQTT client implementation to publish messages and subscribe to topics. I receive messages on subscribed topics with success.
Now I'm implementing a parser of incoming messages (maybe I'll use ASN.1 uPER encoded). However I'm not sure if I will receive always the complete message or not. The data callback is called with the flag MQTT_DATA_FLAG_LAST when the last chunk of the message is received. If there's any possibility that the message is received in parts, it's very important, because I have to use a parser that doesn't necessarily need the data in a single contiguous block of memory,
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