B4J Library jSerial library - Erel    
Mar 6, 2025   
(23 reactions) with AsyncStreams. Both standard mode and prefix mode are supported. Note that prefix mode can only work if both sides of the connection follow the protocol.
Change AStream.InitializePrefix to AStream.Initialize...
B4A Question Advantages of AsyncStreams InitializePrefix over just Initialize AND buffer size - hatzisn    
Jun 3, 2025Good afternoon to all of you,
until now I was using asyncstreams with just "Initialize"... there is any advantage (and which) of using InitializePrefix instead of using just initialize. My...
link: Both ends must initialise the connection in this mode. When a data array is sent the message length ...
link: is always fixed.
I don't understand this - using InitializePrefix does not limit the usable...
link: understand this - using InitializePrefix does not limit the usable record size. Mind you it is some time...
B4i Question Astream not initializing - Scantech    
Aug 1, 2022
client.TimeOut = 0
astream.Initialize(client.InputStream, client.OutputStream, "AStreams")
If astream.IsInitialized Then
lblStatus...
link: Forgot to add s with Astream_Newdata event. Should be Astreams_Newdata. Its really hard to debug...
link: #ATSEnabled: False is set. Still no success....
link: I cannot be sure but have you tried to set #ATSEnabled: False in project attributes in Main? Try it ...
B4R Tutorial [tool] External Serial Connector - Erel    
May 19, 2020   
(6 reactions) B4R program:
Sub Process_Globals
Public Serial1 As Serial
Private astream As AsyncStreams
End Sub
Private Sub AppStart
Serial1.Initialize(115200)
Log("AppStart")
astream.Initialize(Serial1.Stream, "Astream_NewData", "Astream_Error")
End Sub
Sub Astream_NewData (Buffer() As Byte)
Log("Received: ", Buffer)
End Sub
Sub AStream_Error
Log...
B4R Question B4R Sockets, Astreams, initialize, errors. 8266 wifi - RJB (first post)    
Aug 11, 2019 As WiFiServerSocket
Private astream As AsyncStreams
End Sub
Private Sub AppStart
Serial1.Initialize(9600... As WiFiSocket
Private astream As AsyncStreams
Dim Timer1 as Timer
End Sub
Private Sub AppStart
Serial1...
link: astream As AsyncStreams
End Sub
Private Sub AppStart
Serial1.Initialize(115200)
Log...
link: New thread started, as requested: https://b4x.com/android/forum/threads/error-log-in-b4r-astreams...
link: Carefully read the tutorial: https://www.b4x.com/android/forum/threads/connecting-two-esp8266-boards...
B4A Tutorial [B4X] AsyncStreams Tutorial - Erel    
Feb 22, 2018   
(10 reactions) If
End Sub
Once there is a connection we initialize the AsyncStreams object:
AStreams...
Dim AStreams As AsyncStreams
Dim Server As ServerSocket
Dim Socket1 As Socket
End Sub...New video tutorial:
256762156
AsyncStreams allows you to read data from an InputStream and write....
AsyncStreams is very useful when working with slow streams like network streams or Bluetooth streams... those are available.
Using AsyncStreams is usually simpler and safer.
AsyncStreams can work in two...
B4A Question AStreams InitializePrefix - Jeffrey Cameron (first post)    
Jun 18, 2018   
(2 reactions)See my reply in your other post....
link: comunicates with a VB6 program.
All I want to do is convert the app to use AStreams with prefix.
Now my...
French Comprendre et vérifier "AsyncStreams is initialized in prefix mode" - klaus (first post)    
Mar 22, 2022J'ai peu d'expérience dans ce domaine, mais je me suis amusé avec Arduino pour écrire la documentation pour B4R.
Dans B4A, pour AsynchStreams il y a deux méthodes d'initialisation:
AsynchStreams.Initialize (In As InputStream, Out As OutputStream, EventName As String)
AsynchStreams.InitializePrefix (In As InputStream, BigEndian As Boolean, Out As OutputStream, EventName As String)
Avec...
link: AsyncStreams is initialized in prefix mode" ?
L'échange B4A vers ARDUINO fonctionnent parfaitement...
B4A Question Crash with AStreams.InitializePrefix, success with AStreams.Initialize - Michael eldred (first post)    
Nov 27, 2011Program crashes in ASYNC prefix mode
I am having the exact same issue...
when initializing in normal mode I can communicate no problem,
when I switch to prefix mode the program crashes...
link: You should check the unfiltered logs for the exact error message. The problem is probably related to...
link: Nothing. Read the AsyncStreams tutorial. Your server does not understand prefix mode....
link: for the exception details. That will give the line number within AsyncStreams where it is happening....
B4A Tutorial B4A-Bridge source code - Erel    
Sep 2, 2024   
(13 reactions) by an AsyncStreams object. AsyncStreams are very useful for networking and other external communication.
In this case the AsyncStreams object is initialized in prefix mode. In this mode we always...: AsyncStreams Tutorial
This code is a good example for networking and working with service.
You are welcomed...
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