Android Question AsyncStreams through esp8266

Erel

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• Jan 20, 2019

• #2

[B4X] B4RSerializator - Send and receive objects instead of bytes

 

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G

Georgi

Member

• Jan 20, 2019

• #3

I try to connect virtual terminal installed on laptop, through serial converter then esp8266(server), to my android phone (client). Working well in one direction, when sending from terminal, get java err. message size too large...prefix error. I'm using serialization. Java block data before it goes through handlers?

 

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Erel

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• Jan 21, 2019

• #4

1. Java is not related here.
2. You should post the full error message.
3. You need to understand how prefix mode works: https://www.b4x.com/android/forum/threads/b4x-asyncstreams-tutorial.7669/
4. Good example to start with: https://www.b4x.com/android/forum/threads/72404/#content

 

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G

Georgi

Member

• Jan 21, 2019

• #5

This is error message:

java.RuntimeExcepion:
Message size too large.Prefix
mode can only work if both sides
of the connection follow the "prefix"
protocol

Click to expand...

I do, use example code with B4RSerializator.

 

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Erel

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• Jan 21, 2019

• #6

Are you using both the B4R program and the B4A program? It will not work if you are implementing the Arduino code with Arduino IDE.

 

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G

Georgi

Member

• Jan 21, 2019

• #7

No i'm using only B4A. Answearing to android from serial terminal, problem is in that direction only.

 

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Erel

B4X founder

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• Jan 21, 2019

• #8

This is expected. You need to learn about AsyncStreams and how prefix mode works. It will only work with B4R.

 

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