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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for May 9th, 2017

The Delphi Pipe – twm’s blog

Posted by jpluimers on 2017/05/09

The Delphi Pipe got revived:

The Delphi Pipe is an RSS feed that combines other RSS feeds from various Delphi blogs.

Source: [WayBack] The Delphi Pipe – twm’s blog

Of course there are also [WayBack] DelphiFeeds (which seems unmaintained, but a truckload of people have it in their RSS reader) and [WayBack] BeginEnd.net (slowly but steadily growing).

I wish there was an RSS reader that could filter out duplicate posts so I can just follow all three without reading duplicates.

Related:

–jeroen

Posted in Delphi, Development, Software Development | 3 Comments »

Building `libssh2` for Windows (Win32/Win64) is a lot harder than I hoped for

Posted by jpluimers on 2017/05/09

Building libssh2 for Windows (Win32/Win64) is a lot harder than I hoped for.

There were no instructions on their website, there was the occasional “use CMake” at #IRC and that was about it.

Of course running just CMake doesn’t work and getting it working involves a lot of non-descriptive error messages, cursing and fruitless searches for them just bumping into “me too” threads not really providing the solution.

I tried building OpenSSL but after building, no `lib` directory appears so I cannot satisfy the dependencies. Not sure what OpenSSL would bring as I could not find any documentation about it either, so I’ll leave it at that.

Might be that `make test` for OpenSSL doesn’t succeed because some vague non-explained error which is odd when doing this on an almost prestine VS 2015 Community Edition VM.

But I’ll take that up with the OpenSSL people one day.

Oh the joy of Open Source…

Below are the steps (below the –more– mark a gist with the most recent version).

The core are these:

  • you need git, Visual Studio and CMake
  • use CMake to generate project files, msbuild to build (CBuild cannot build any more)
  • After a Win64 build you have to reset the platform to create a Win32 build

These links helped a lot some in the positive, others in the negative sense:

libssh2-build-steps.rst
  1. Install Visual Studio 2015 community edition from https://www.visualstudio.com/en-us/downloads/download-visual-studio-vs.aspx (as of writing:http://download.microsoft.com/download/D/2/3/D23F4D0F-BA2D-4600-8725-6CCECEA05196/vs_community_ENU.exe or http://download.microsoft.com/download/b/e/d/bedddfc4-55f4-4748-90a8-ffe38a40e89f/vs2015.3.com_enu.iso )
  2. Download CMake via https://cmake.org/download/ back then https://cmake.org/files/v3.6/cmake-3.6.2-win64-x64.msi
  3. Install and ensure to add CMake to the PATH for all users:

https://www.dropbox.com/s/ss5xke97iy4yyka/Screenshot%202016-09-13%2009.36.54.png?raw=1

  1. Run this script on a new command-line: 
    git clone https://github.com/libssh2/libssh2.git
pushd libssh2
mkdir buildWin64
pushd buildWin64
:: Generate build for MSVS 2015
cmake .. -G"Visual Studio 14 Win64" -D"BUILD_SHARED_LIBS=1"

:: this fails bitching about v100 not being there:
:: cmake --build . --config "Visual Studio 14 Win64"
:: this just works:
set Platform=
call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\bin\amd64\vcvars64.bat"
call msbuild libssh2.sln
dumpbin /headers example\Debug\libssh2.dll | find "machine"
popd
mkdir buildWin32
pushd buildWin32
:: Generate build for MSVS 2015
cmake .. -G"Visual Studio 14" -D"BUILD_SHARED_LIBS=1"

set Platform=
call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\bin\vcvars32.bat"
call msbuild libssh2.sln
dumpbin /headers example\Debug\libssh2.dll | find "machine"
popd
popd

Source: Building libssh2 for Windows (Win32/Win64) is a lot harder than I hoped for

–jeroen

Read the rest of this entry »

Posted in Communications Development, Development, Internet protocol suite, OpenSSL, Power User, Security, SSH, TCP | Leave a Comment »

Mikrotik – Choosing your SFP/SFP+ modules and direct access cables

Posted by jpluimers on 2017/05/09

For hooking up SFP and SFP+ ports on Mikrotik devices you basically have two options:

  • Direct Access Cable (passive and affordable for 1 and 2 meters; active and more expensive for more than 3 meters)
  • SFP/SFP+ modules with LC-LC optic fiber cable in between them (pairs of modules are more expensive than passive DAC, but the fiber is a lot cheaper)

Choosing the SFP/SFP+ modules is a bit intimidating as the MikroTik SFP module compatibility table – MikroTik Wiki has very few details.

Then I found sfp_all-150601132341.pdf (archived) which lists many of the SFP and SFP+ modules including their specifications.

Since neither the matrix nor the PDF contains links to the products, here is a small list of what I could source last year and is compatible with both the CCR1009 routeres and CRS226 switches:

–jeroen

via: Connect CCR1009 with CSR226 over a longer distance than 3 meter – MikroTik RouterOS

Posted in Internet, MikroTik, Power User, routers | Leave a Comment »