Posted by jpluimers on 2020/10/22
Always interesting to see what others put on their Windows development systems, for instance: [WayBack] My toolkit – Roald’s blog
Everytime I (re)install my development computer I need to think about all the tools I need and use on a regular basis. For that reason, and maybe to inspire others, here’s my list of essentia…
–jeroen
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Posted by jpluimers on 2020/10/22
An old trick that I tend to forget: [WayBack] delphi – How to convert a null terminated string to string? – Stack Overflow:
You can assign a null-terminated
PChardirectly to aString:function GetFileName(DiskName: TFileNameIO): string; begin Result := PChar(@DiskName); end;
It can work even on string literals and constants, where you can leave out the @, like in:
var S: string; begin S := PChar(FastMM4Messages.LogFileExtension;
Probably time to update the unit I mention in ISO 8601 Date, Time and DateTime in Delphi (was: Simple example to show DateTime.Now in ISO 8601 format on ideone.com | Online C# Compiler & Debugging Tool).
–jeroen
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Posted by jpluimers on 2020/10/21
Cool:
The triggering in this case is the result of a main power drop and recover. The battery is unable to keep the votage at 9V level at the very moment any led is turned on, the voltage is droped down. That is what makes pin 14 to get the clock pulse so the 4017 shifts to the next led. The moment the led is off and right before the next led is turned on the main power gets recovered. When the next led is on again, the main power drops down, and so on.
Schema but less explanation on: [WayBack] LED Chaser with only 4017 – RevealNew
–jeroen
Posted in Development, Electronics Development, Hardware Development | 1 Comment »
Posted by jpluimers on 2020/10/21
[WayBack] Top 45 Best Automation Testing Tools Ultimate List • Test Automation Made Easy: Tools, Tips & Training Awesomeness A few notes, partially related to Enable your device for development – UWP app developer | Microsoft Docs.
One research project I had a while ago, was to see how it was possible to use a generic testing tool like Katalon Studio (that can test many platforms), for testing Windows applications.
Katalon uses a Selenium interface that normally is used for web applications through the [WayBack] WebDriver protocol (formerly [WayBack] JsonWireProtocol) that continues to be updated: [WayBack] draft upcoming WebDriver protocol, which is more generic than just web applications:
Posted in .NET, Conference Topics, Conferences, Delphi, Development, Event, Software Development, Windows Development, WinForms, WPF | Leave a Comment »
Posted by jpluimers on 2020/10/21
One of the dreaded things when logging on using RDP is that if another user is logged on, you have to first indicate you want to indeed logon (if you don’t, the RDP connection will close after some 15-30 seconds), then wait for their approval time-out before you can logon.
As of writing there is no way around this.
Some links that helped me conclude this:
–jeroen
Posted in Development, Power User, Software Development, Windows, Windows 10, Windows 7, Windows 8, Windows 8.1, Windows Development | Leave a Comment »
Posted by jpluimers on 2020/10/21
On Windows, filenames do not like some characters (including : and +), so this is a quick way to get a timestamp into ISO8601 format that is compatible with filenames.
TimeStamp := Now();
StartIso8601String := DateToISO8601(TimeStamp, False).Replace('-', '').Replace(':', '') // https://en.wikipedia.org/wiki/ISO_8601#Time_zone_designators
It Depends on the [WayBack] System.DateUtils unit which had the [WayBack] DateToISO8601 function [Archive.is] added in Delphi XE6.
A poor man’s solution (that skips timezones altogether) is this one:
FormatDateTime('yyyymmdd''T''hhnnss''.''zzz', TimeStamp); // note quoted T and ., as otherwise they will be expanded.
–jeroen
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Posted by jpluimers on 2020/10/20
From [WayBack] Enable your device for development – UWP app developer | Microsoft Docs:
Run these as administrator on the command prompt to:
reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\AppModelUnlock" /t REG_DWORD /f /v "AllowAllTrustedApps" /d "1"
reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\AppModelUnlock" /t REG_DWORD /f /v "AllowDevelopmentWithoutDevLicense" /d "1"
When you run WinAppDriver without it, you get this:
C:\Users>"C:\Program Files (x86)\Windows Application Driver\WinAppDriver.exe"Failed to initialize: 0x80004005
Various searches for what to pass as parameters to SetCapabilities failed, but the list is right at the README, but without any mention SetCapabilities, so search engines miss it with for instance “SetCapabilities” “WinAppDriver” – Google Search that only returned these links:
newCommandTimeout and directs to [WayBack] Desired Capabilities – AppiumSupported Capabilities
Below are the capabilities that can be used to create Windows Application Driver session.
Capabilities Descriptions Example app Application identifier or executable full path Microsoft.MicrosoftEdge_8wekyb3d8bbwe!MicrosoftEdge appArguments Application launch arguments https://github.com/Microsoft/WinAppDriver appTopLevelWindow Existing application top level window to attach to 0xB822E2appWorkingDir Application working directory (Classic apps only) C:\TempplatformName Target platform name Windows platformVersion Target platform version 1.0
–jeroen
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Posted by jpluimers on 2020/10/20
A still relevant part for [WayBack] Class methods in Record vs Class in Delphi 2010+ – Stack Overflow is the distinction between class methods on both:
classes they can be either regular (no extra keyword), static or virtual.records they can only be static, as there is no inheritance on records
class helpers (and presumably if they are ever created: interface helpers)While class methods inside classes can be used in the same way, they can in addition have another goal: they can be
virtual. Called from aclassvariable this can lead to different implementations depending on the current content of that variable. This is not possible for records. As a consequence class methods in records are alwaysstatic.
Thanks Uwe Raabe for this insight!
One odd thing on class methods in classes, is that when they need to be static when they are the read or write backing of a class property.
When a class method is static, any calls from it to virtual (or dynamic) methods will not be handled as such: there is no class VMT for it (as because they are static, they do not have a self parameter).
–jeroen
PS: I realised later that part of the above was already in E2398 Class methods in record types must be static (Delphi) – RAD Studio
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Posted by jpluimers on 2020/10/16
Just discovered this has been possible since Windows 10 by holding the shift key while dragging with the mouse. After like 20 years of waiting, why did nobody warn me (:
Is there any way I can disable the stupid rectangle selection mode thing in the Windows command line? I want to select line by line like normal. Currently it’s a giant pain when I need to copy things
So this is a thing from the past: [WayBack] Non-rectangle select in Windows command line – Super User
And this was already possible (but then you had to drag the full width): [WayBack] windows – Select text across lines in cmd.exe? – Super User
–jeroen
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Posted by jpluimers on 2020/10/15
Postfix has documentation on primary MX and secondary MX, but not on tertiary MX.
If the primary MX is down, you have a series of secondary MX and tertiary MX that configured the same way, MX DNS priority for primary, the series of secondary MX and tertiary MX have increasing numbers, and the primary MX goes down, then senders can get “too many hops” as secondary and tertiary MX are looping.
I had a hard time finding a good and easy solution as these queries do not return many meaningful results:
Here are some links that helped getting this solved:
Short answer: this message means that mail is probably looping. If you see this after you turned on Postfix content filtering, then you have made a mistake that causes mail to be filtered repeatedly. This is cured by appropriate use of content_filter=, header_checks=, and body_checks=.
Long answer: the message has too many
Received:message headers. A received header is added whenever Postfix (or any MTA) receives a message. A large number ofReceived:message headers is an indication that mail is looping around.Side comment: email uses the opposite of the technique that is used to avoid IP forwarding loops. With IP, the sender sets a TTL (time to live) field in the IP header. The field is decremented by each router. When the TTL reaches zero the packet is discarded and an ICMP error message is returned to the sender.
In case you or anyone else was/is wondering about the
mydestination = localhostthing, the reason it has to be set to just localhost is because MIAB uses Postfix’s “virtual domain hosting” (http://www.postfix.org/VIRTUAL_README.html) support. Per the documentation formydestinationat http://www.postfix.org/postconf.5.html#mydestination:Do not specify the names of virtual domains – those domains are specified elsewhere. See VIRTUAL_README for more information.
(in the context of MIAB every domain is a virtual domain).
In my case a series of these:
Received: from mwgp.xs4all.nl (mwgp.xs4all.nl [80.101.239.92])
by fiber24315337242.heldenvannu.net (Postfix) with ESMTP id 26395200FE
for <jeroen@pluimers.com>; Fri, 29 Jun 2018 11:01:02 +0200 (CEST)
Received: from fiber24315337242.heldenvannu.net (unknown [37.153.243.246])
by mwgp.xs4all.nl (Postfix) with ESMTP id 077A5E937
for <jeroen@pluimers.com>; Fri, 29 Jun 2018 11:01:02 +0200 (CEST)
Specifying the transport will likely help me solve this problem:
This all came down to editing /etc/postfix/transport adding lines for each relayed domain like this one:
example.org smtp:[mx-a-record.example.org]
Lines like it direct to use the smtp transport and use a specific host (normally, the relay transport is being used).
After this:
# postmap /etc/postfix/transport
# rcpostfix reload
I choose not to configure [WayBack] Postfix Configuration Parameters: relay_recipient_maps, but might if I had an automated way of replicating lists of valid (and invalid) users.
Another option was confirmed at [WayBack] Software-update: Postfix 3.4.0 / 3.3.3 / 3.2.8 / 3.1.11 / 3.0.15 – Computer – Downloads – Tweakers by [WayBack] menocchio. Thanks!
Dat is volgens mij eenvoudig op te lossen met relay_transport of transport_maps. Zie ook: Postfix transport table format.
Daarmee dwing je de secondary servers de mail altijd af te willen leveren bij de primary server (en dus niet bij een andere secondary). En als de primary niet online is, dan wacht ie netjes tot dat wel het geval is :-)
Bijvoorbeeld:
relay_transport = smtp:[primarymx.domain.tld]
Likely relevant: [WayBack] The Book of Postfix
Maybe relevant in the future:
mydestination
relay_domains and relayhost
The second part of this document presents additional configurations for hosts in specific environments.
Found on my hunt for the above:
Create a file named
transportin /etc/postfix and add the following text,gmail.com smtp:smtp.yourisp.com:25
googlemail.com smtp:smtp.yourisp.com:25Remember to swap “smtp.yourisp.com” for the address of your ISP’s smtp relay server.
Now we need to compile this file using the postmap command,
postmap /etc/postfix/transport
Edit /etc/postfix/main.cf and add this line at the bottom,
transport_maps = hash:/etc/postfix/transport
Restart postfix and you should find all mail addressed to @gmail.com or @googlemail.com will be redirected to your smtp relay.
Optional list of relay hosts for SMTP destinations that can’t be found or that are unreachable. With Postfix 2.3 this parameter is renamed to smtp_fallback_relay.
Optional list of relay hosts for SMTP destinations that can’t be found or that are unreachable. With Postfix 2.2 and earlier this parameter is called fallback_relay.
Try not to make typo’s: [WayBack] postfix appears not finding MX records or host names from DNS
Interesting thought, but not sure how smart SPAM bots are now: [Archive.is] Spam relaying through secondary MX… – Google Groups
To archive this:
–jeroen
Posted in *nix, Communications Development, Development, DevOps, DNS, etckeeper, Infrastructure, Internet, Internet protocol suite, Linux, Power User, SMTP | Leave a Comment »
The Wiert Corner - irregular stream of stuff 