Send large file about xbee-java HOT 5 CLOSED

Hi, Ruben,

I implemented a very similar solution. The only difference is that I use ZIP compression of the String, in addition to reducing the size of the message, I can check the integrity of the file on the target. It worked very well.

Best regards.

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Hi @RodrigoMateus,

I'm not sure if this is a common use case for XBees. Anyway, a possible solution would be to encode the image to base64, split the resulting string, and send the chunks using one of the sendData() methods. Then, in the receiver module, you should combine the chunks to get the original string and finally decode the image.

Best regards.

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Hi @RodrigoMateus , i need to provide a very similar functionality to my system, but instead of 100 Kb i need to transfer 30 MB images. Can you share the solution you created ? Thanks

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Hi Bruno,

To send a large file, I serialize it to byte [] and divide into 250 byte parts (for XTend radios). Then I send each part using the method "DigiMeshDevice.sendExplicitData(remoteXBeeDevice, sourceEndpoint, destEndpoint, clusterID, profileID, date)" where:

DestEndpoint = defines the message id.
ClusterID = defines the number (sequence) of the part.
Data = byte [] part.

As messages are received, I will copy each part into a byte []. I use the above parameters to join the parts in the correct way. At the end, I deserialize this byte [] to get the original file.

There are several ways to implement this, depends on the number of radios, whether the messages are sent in sequence, whether there is error handling, etc., this is just a general idea.

I hope I have helped.

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Thank you @RodrigoMateus !

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