Android Question Socket Send Bytes Array

techknight

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• May 17, 2019

• #2

All CChar does is return the first character of a given expression. Thats it. So CChar prints the character representation of vbNullChar.

Youll probably need byteconverter library and use the ASCII code for Null. However, vbNullChar is just a 0. or ASCII 0x00, so equivalently, your returning the print character of the value 0. in the case of B4X, that would be Chr(0)

when designing/using protocols like this, you really need to understand on a binary level what is going on, which will help you at porting code between languages.

 

Last edited: May 17, 2019

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vercettyDev

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• May 17, 2019

• #3

Usage:
sb.append(Asc("4")) 0x00 .append(Asc("abcd"))

???

 

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techknight

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• May 17, 2019

• #4

Edit: its actually Chr(0). Asc does the opposite.

 

Last edited: May 17, 2019

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vercettyDev

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• May 17, 2019

• #5

tried this, but it did not work, am I doing it right?

 

Last edited: Sep 30, 2022

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vercettyDev

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• May 17, 2019

• #6

Someone ?

 

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techknight

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• May 17, 2019

• #7

Again, you need to study the protocol or know the protocol.

If you log the raw binary output as a hex-string from your VB.Net program, and then compare it against the binary hex-string output from the B4A program, then it will become apparent where the problem is.

I cannot help you further, and I dont think anyone else can either without knowing the full scope of the project, the expected input, and the expected output.

Sorry.

 

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vercettyDev

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• May 17, 2019

• #8

I just need to send an array of bytes, I tried OutputStream

But I did not succeed.

Leave novalmente for what?

 

Last edited: Nov 9, 2022

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Erel

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• May 19, 2019

• #9

Amanda Sura said:

Last time I left my project on this forum and nobody helped.

Click to expand...

It is very bad that you make duplicate posts. I've answered your question here: https://www.b4x.com/android/forum/threads/writeint-socket-usage.105933/#post-663160
Next time all the posts will be deleted.

 

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