June 11, 2015
I’ll be at the Sierra Wireless Innovation Summit, a full-day IoT Innovation conference in Paris on June 17. Meet me there to see a demo of macchina.io, my new really cool POCO-based platform for building IoT gateways and devices.
The event features technical and business tracks, plenty of real-life use cases, an exciting showroom with 15+ live IoT demos, and of course ample networking opportunities. Register now to join me there!
March 2, 2015
The POCO C++ Libraries are now available via biicode, in the following versions:
- fenix/poco (develop) -> changing continuously
- fenix/poco (v1.6.0)
- fenix/poco (v1.5.4)
- fenix/poco (v1.4.7p1)
biicode is a file based dependency manager, which has many advantages:
- Save time reusing from any POCO library (Foundation, Net, NetSSL_OpenSSL, etc.) such times as you need and avoid to configure and build out the libraries first. biicode’ll only retrieve the necessary files to build your project.
- POCO depends on external libraries like zlib, PCRE (Perl Compatible Regular Expressions), HPDF, 7-Zip, OpenSSL and SQLite that they’re uploaded on biicode and maintained by our users.
- It’s been tested on biicode in Windows with Visual Studio 10 and Visual Studio 12, Linux with GCC and Apple with CLang.
I recommend you to use Visual Studio to configure your project because with MinGW you could get some errors.
POCO External Dependencies
These libraries have many external and third party dependencies to build some of them, e.g., Foundation depends on PCRE and ZLib. Without biicode PCRE and ZLib source files must be present in POCO project, but with biicode it’s not needed. The following table shows all the dependencies for every version uploaded which biicode’ll find if you use all the modules in a project:
So, you’ll not have to worry about to install or build them, biicode does all the effort for you 😉 . These are the depending blocks in biicode:
- PCRE(v8.36): fenix/pcre
- PCRE(v7.8): fenix/pcre(v7.8)
- HPDF: fenix/hpdf
- zlib: zlib/zlib
- 7-Zip: fenix/7z
- OpenSSL: lasote/openSSL(v1.0.2)
- SQLite: fenix/sqlite
Using POCO C++ Libraries In Your Project
1. Create a new project and an empty block:
$ bii init poco_sample
$ cd poco_sample
$ bii new myuser/myblock
2. Add your sample code (orignal code from Net/samples/dict.cpp) into ./blocks/myuser/myblock/sample.cpp:
// $Id: //poco/1.4/Net/samples/dict/src/dict.cpp#1 $
// This sample demonstrates the StreamSocket and SocketStream classes.
// Copyright (c) 2005-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
// SPDX-License-Identifier: BSL-1.0
3. Choose which uploaded POCO version you want to depend on, configure it through your ./blocks/myuser/myblock/biicode.conf file. Create it and copy the following:
4. Finally, you’d only have to retrieve your POCO dependencies and build your sample.cpp. For it, use this command:
Note: for Windows users, to configure your project with Visual Studio, e.g., 10 version, execute:
$ bii cpp:configure -G "Visual Studio 10"
$ bii cpp:build
So, biicode’ll download all the dependencies from release version 1.6.0 and compile the project. Now, you can run the binary created in your ./bin/ folder.
Use The Original #include's
Change all the includes from the previous sample.cpp code to:
Now, tell biicode how to find this dependencies, so, modify again the biicode.conf and add the following:
Warning: take care with Poco/*.h: fenix/poco/Foundation/include because it should always be at the end of [includes] section for being a really wide search pattern.
Finally, clean the metadata and build again the project:
$ bii clean
$ bii cpp:build
Creating A Project With NetSSL_OpenSSL or NetSSL_Win
Making a project using these libraries is a special use case of original includes. Why? Take a look at the following example:
/* headers in Net library */
/* headers in NetSSL_OpenSSL and NetSSL_Win libraries */
Like you see, NetSSL_OpenSSL and NetSSL_Win have the same relative inlcude headers, so, the only way to resolve successfully your dependencies is writing the full path for them.
/* headers in Net library */
/* headers in NetSSL_OpenSSL library */
The biicode.conf would be like the previous one.
Build All POCO Samples
Try to build all the available samples Poco brings us with each release. Create a project, open any examples/poco block and build it, e.g., examples from 1.4.7p1 version:
$ bii init samples_1_4_7p1
$ bii open "examples/poco(v1.4.7p1)"
$ bii cpp:build
So, that’s all! POCO C++ Libraries are amazing and I strongly recommend you to start using them for your network projects.
February 21, 2015
Today is the 10th anniversary of the first public release of POCO on SourceForge.
Here’s my first entry from the CHANGELOG:
Release 0.91.1 (2005-02-21)
This is the first public release of the C++ Portable Components.
The release does not contain all features planned for the later 1.0 release
(the NET library is missing, for example), but is already quite usable.
Please refer to the README file for more information and instructions for
building the libraries.
We’ve come quite far in this 10 years. From the first contributions by Alex a few weeks after the first release (I received his first email on March 24), to the 1.0 release in January 2006, to the move to GitHub in November 2012, which tremendously helped POCO’s popularity and also brought many new contributors.
Today, POCO is used in countless projects, ranging from desktop applications, iOS and Android apps, enterprise applications and embedded devices. Although there’s still some work to do in becoming known to an even wider audience (apparently, there are still C++ developers out there who haven’t heard of POCO), I’m quite happy how everything has turned out.
A big Thank You to everyone who has contributed to POCO, via code, donations or bug reports.
Here’s to the next 10 years!
February 13, 2015
Günter Obiltschnig will be at Embedded World February 24 to 25. We don’t have a booth, but Günter would be happy to meet for lunch, coffee or a drink. Please get in touch if you’d like to schedule a meeting.
December 23, 2014
December 22, 2014
Release 1.6.0 is the culmination of the work done on GitHub over the last two years, including five development releases. It includes major new features from new contributors, like the JSON and MongoDB libraries, much improved Data library, CMake support, as well as numerous other new features and fixes. A big Thank You to everyone who contributed to this release.
November 26, 2014
Release 1.4.7p1 fixes a few issues in 1.4.7 and earlier releases. Most important, the Visual C++ project files for Visual C++ 2010 and later have optimization enabled in release builds. Previous builds had optimization disabled due to a bug in Visual Studio when upgrading 2008 project files with custom optimization settings.
There’s a new feature as well – HTTPClientSession now supports a global proxy setting, which will be used by all instances of HTTP(S)ClientSession, including HTTP(S)StreamOpener.
For more information about the release, please see the CHANGELOG.
November 24, 2014
Yesterday I saw Peter Gabriel’s Back to Front live show in Graz, Austria. Apart from it being an excellent show, there is a little connection to the POCO C++ Libraries in there as well. A big part of the show are the visual effects, including live video, which for some effects is heavliy processed. A little digging around the net reveals that these effects were done with openFrameworks. And for some time now, POCO has been a part of openFrameworks. I don’t know if any parts of POCO were directly involved here, but the connection is nevertheless cool.
October 22, 2014
Release 1.4.7 is the final release of the 1.4 series and contains bugfixes and a few new features. Development release 1.5.4 should also be the final release of the 1.5 series, before 1.5 “graduates” to stable 1.6. As usual, available on the download page or directly from GitHub.