server

Hi I create a ServerSocket and connect with two client to server I can send messages from clients to server, but i can't find who is sending the message and can't answer to client! is there any way that astreams_NewData event show sender socket object?

Dear community, wanna use a local Proxy in B4J to avoid CORS Problems. This is the Try: Sub Process_Globals Dim ho As String Dim po As Int End Sub Sub AppStart (Args() As String) ho="192.168.043.075" 'local ip po=8080 Dim j As HttpJob j.Initialize("j", Me)...

Hello everyone, Here a small quick and dirty implementation of the modbus TCP protocol in B4J as a server / slave. Please note that this is not a complete library! The following limitations are: -Only READING (not writing) of holding registers possible by modbus master(function code 03) from...

Hi, I understand how to use Wait For in a B4J Server Handler. However I have no idea how to pause a server handler class waiting for some data in a SQLite database to change. Anyone so kind to help? Thanks Andrea

buongiorno a tutti, è da un po che tento di collegarmi al mio sqlserver ma non riesco in nessun modo. Public mysql As JdbcSQL Private driver As String = "com.mysql.jdbc.Driver" 'Private jdbcUrl As String = "jdbc:mysql://192.168.0.2:1433/SQLTutorial" Private jdbcUrl As String =...

Hi, All Who tried to use an Android device as the server that has been powered up during several months, or maybe year ? How is the battery state if such usage ? I think, now embedded control systems can be build basing on an Android device (also as server) + wired Ethernet LAN hosts of...

Buonasera, vorrei col mio telefonino creare un app che mi permetta di farel' update di dati che ho su un database aziendale. Di solito su VB.net usavo laconnessione OLEDB o SQLclient esiste qualcosa di simile? Quindi una volta aperta la connessione fare le query, le update ecc in sql. Ho...

Hi All, i'm working on a project which requires a device to send data over to a PC. I came across the MQTT library and I thought I would give it a try, i'm really amazed at how simple it is to set this up, whether running the MQTT Broker on a local P.C. or using one of the cloud host servers...

I have lost 3 days attempting at installing the B4i-Bridge on the actual device and I am about to give up. My system is a MacBook Pro 2018 with 16 GB ram, B4i v4.30 installed on Windows 10 Enterprise running under Parallels Desktop 14.10, Build Server v4.30 installed on Mac side and attached to...

Hi All, I'm trying to add the file download handler to JRDC2: with this code on linux server: 'Handler class Sub Class_Globals End Sub Public Sub Initialize End Sub Sub Handle(req As ServletRequest, resp As ServletResponse) Dim out As OutputStream Dim name As String =...

Hi, I would like to add webhook support to one of my B4J Server application. I've not found anything about services, only client side. Does anyone has an idea or piece of code to start from? Can I achieve that with regular server code, or should I look at additional components? Many thanks in...

I try to use this solution with ssl: [Server] Data Collection Solution - Device, Desktop and Web reports https://www.b4x.com/android/forum/threads/server-data-collection-solution-device-desktop-and-web-reports.37254/#content In the DataCollectionDesktop App i will use Username & Password...

hello, how to make this example b4j network here work with ssl? https://www.b4x.com/android/forum/threads/b4x-network-asyncstreams-b4xserializator.72149/ i set the server into listen after a button click. if me click connect from "client" the server show a connect but the client stay in status...

hello, i have a problem to get data if me used a http(s) server. it not response if me test local at same pc or from web. if me use port 80 with without ssl config it works fine local and extern. in firefox i got a message selfsigned cert if not ok but i clicked ok for allow then nothing...

Hi all, I need help on this one please. I have an old VB6 application that runs well for my client. It includes an auto reminder for their clients to keep appointments. Appointment reminders are sent via web based bulk SMS service. For this to happen, i created a small app on the server: 1.. All...

Hi I need to read an array of parameters from the payload of an HTML form that is POST-ed to my B4J server. I normally use Dim mydata As String = req.GetParameter("mydata") to read a single parameter "mydata". My payload also contains multiple parameters like...

Hello, i want to set a DosFilter for a special path for example i want to restrict the maxium Request Per Seconds for the login query to prevent brute force attacks. is it possible?

I get this error on server side (b4j). I searched the forum but I found solutions only for client websockets. BTW I don't know how the websocket is created on server side, it is "received from somewhere" in the websocket handler class; although it seems strange to me, is it possible that the...

I have a b4j websocket server certainly reachable from outside my network (I mean that I don't have problems with ports, firewalls, ...). I created the keystore as decribed in this tutorial (more precisely as described in wiki.eclipse... linked in that tutorial) and I get that error message...

Hello, on B4A side i know it from here. But as long as I do not have a website that can show this, I want the app to run without the browser opening. From Stackoverflow, from this post, i know it is possible. How can i handle this with my B4J Server?