Dollar Dollar
1.1 Changes
Added previoud score record
Added dialog for resetting scores
Download Dollar Dollar v1.1
Click the link below to download Dollar Dollar v1.0.
Download Dollar Dollar v1.0
Click the link below to download the prototype for Dollar Dollar.
Download Dollar Dollar Prototype
Dollar Dollar
Notifier
A simple utility app for creating custom notifications. Click the link beliow to download
Download Notifier
Notifier


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Overview
This program was, initially, made to test how hard it would be to convert my original Project Euler program into a networked solution. The conversion was not a complicated one. I striped all of the UI code from the problems implementation and created a new UI in Unity3D (nothing fancy and almost an exact copy of the original). The network connection was, at first, made using TCP sockets and later I added an UDP option. In the Unity UI (client) I used the native TCPCLient and UDPClient classes, to read/write on the stream(TCP) and to Send/Receive(UDP). On the problems program (server) was used SDL2_net that provides a simple encapsulation of berkeley sockets (winsock on windows).
The protocol used for communication was a very simple one message_type|message|close_tag|, the close tag is always "END" and the final pipe is used to separate the message from any buffer garbage.
The program does not have any type of automatic "NAT safeguard", that is, if the server is behind a NAT you have to manually open the port (default 45456), as no automatic solution was implemented.
I am searching for a good, and easy to use lib to help me do that, and because of past experiences, the search will take some time. During the development of the game Shrooms, we(the team, but mostly me) tested several options, libs and user devices(cable/internet companies routers), and the results were weak.
First uPnp is a mess, half of the time, it does not work and when it works in a device, the device from another manufacturer fails to do so.
And second, NAT punch-through failed some times(like with uPnp, different routers might have different NAT type and not all support NAT punch-through and you may have to have to manually configure the router), but this is the best one (Shrooms uses this approach).
There are other solutions besides the last two, like a public routing server(public IP) that routes all messages among the connected peers, but it is the least efficient approach so it should be used as a last resort.
Because of that, I provide an IP:PORT (set as default on the client <IP_ADDRESS>:45456) to a VPS running euler_server, listening to TCP and UDP.
The 'config.json' file next to the server binary allows you to change the port(TCP and UDP use the same) and set what type (TCP/UDP) of server your want to start(both 'on' by default).
Any problems running the program, let me know.
How to compile the program
The development of the application is being done on a Linux system (fully updated Archlinux) using g++ as the compiler and GDB as the debugger. Other than the standard c++ libs, it used SDL2, SDL2_net, boost::multiprecision lib and GMP(linux only).
The boost::multiprecision lib is used because it let us change its backend lib. On linux I used GMP and on windows I used the "native" boost implementation (cpp_int) and the selection is made with preprocessor directives in the header file "defines.hpp". This approach was used as I was unable to correctly compile GMP and MPIR on windows.
Linux
On linux you can use the provided Makefile to compile the program and you need to have installed gcc, make, SDL2, SDL2_image, SDL2_ttf, boost and GMP. For easier installation use your distro package manager to download and install the libs. The compiled program will be inside the "bin" folder.
Windows
The provided windows build was compiled using VS Express 2015. For you to compile it yourself, first you need to download the needed libs:
After you download the libs create a new vs c++ project (I created an empty one and used "mainCRTStartup" as the linker entry point) and add the program source files (you need to add the lib/jsoncpp folder to your include search path). Add the include dirs for all the downloaded libs to your project include search path as well as add the 3 SDL libs "lib" subfolders (I used the x64 for all 3) to your lib search path. Finally your need to add SDL2.lib, SDL2main.lib and SDL2_net.lib to your linker input. The boost::multiprecision lib does not need any config from the linker as it is a header only lib.
Now, you should be able to compile the program on windows (if you did not add the .dlls to your system or their path to environment path var, you need to put the .dlls next to the exe, you can find the .dlls in the lib folders for all SDL libs). In case you are unable to correctly configure the SDL libs check this tutorial.
Folder and Files (Server)
- 'src/' - contains the entire source code
- 'src/lib/' - contains external downloaded libs which source code will be compiled into the program (jsoncpp in this case)
- 'src/include/' - all the header files
- 'src/src/' - all the .cpp files. main.cpp is in 'src' and not this subfolder
- 'docs/' - documentation generated by doxygen
- 'bin/' - destination (with the correct data folder structure) for the build compiled by using the Makefile
- 'objects/' - folder that store the object files generated during compilation
- 'euler_short' - small bash script to run the program after compilation
- 'Makefile' - default file used by make to compile the program (in the future I need to improve/simplify this file)
- 'readme_net.html' - this file
Folder and Files (Client)
Just open the project on Unity3D(5.3.5f1 used), otherwise, all my script are inside 'Assets/Scripts/'
Known bugs
On windows, problem 36 is crashing the program, I was able to identify where the problem is, but I have yet to start to correct it, therefore it was disabled in the provided
windows build.
In the Unity client, some times a problem solution (that was requested to the server) is no shown, although debugs show that it was received. Just request the problem again an the solution is shown (no new net request is made).
There might be a concurrency problem with the client thread and the main thread even though I am using a mutex to control access to the output text (could be some "automatic"
unity call that I cannot control via mutex). Also, the simple UDP timeout timer is not working correctly.
A basic attempt for an UDP timeout when requesting a solution is not working (I have yet to further test it).
What next?
I do not know. I will keep working on the base program and merge the changes to this one. Or I might implement NAT punchthrough solution, or create a new UI in godot/python that reads/writes using a different protocol and needs to use a broker to be able to communicate with the server. And the broker could be a stand alone program or an add-on for the current server. Also implement so kind of UDP reliability system. Damn, so many ideas are flowing.


We got your digits! Check your texts and click below to download the EP:
Download Now for Free!
You can also stream the EP below!
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Questions?
hola@switchfoot.com


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Enter in the search criteria in the Search Window. You can either search by Claim Number or Social Security Number or Last name or Date of Birth, or a combination of both the Last name and the Date of Birth. Click the "Search" button or press the enter key to perform the search. If your search returns multiple results (more than one account), the following "Search Results" window is displayed. Click on any row to go to the associated Account Details Page.


Computer Science · Cognitive Science · Software Engineering
Wordpress and Food Reviews
Computer Science and Software Engineering
Commercial Development


Hulimavu lake bund breached, several houses flooded in Bengaluru
About 250 families had been affected and efforts were on to shift them to safety and provide food, the City Mayor said.
by PTIA large number of houses were inundated in Hulimavu in Bengaluru as water from a lake flooded the area on Sunday after its bund was damaged, officials said.
Efforts were on to shift around 250 families badly affected by the sudden flood which also swept away several cars and two-wheelers, they said.
City Mayor M Gautham Kumar said the incident occurred when some people allegedly tried to lay a pipe with the help of an earthmover and the civic body BBMP would investigate about it.
About 250 families had been affected and efforts were on to shift them to safety and provide food, he told PTI.
The Bruhat Bengaluru Mahanagara Palike (BBPM) officials the fire and emergency services personnel were carrying out the relief work.
Pumps were deployed to flush the water out of basements of residential complexes, while efforts were on by engineers in the civic body to plug the breach, officials said.


QEMU Overview for RISC-V and Toolchain
Muhammad Usama Anjum
Jun 2020
Outline
- QEMU internals overview
- Hands on debugging QEMU
QEMU Overview
QEMU is a generic and open source machine emulator and virtualizer.
- Cross Architecture Emulation (TCG)
- QEMU for KVM
Cross Architecture Emulation (TCG)
Android Emulator, Embedded Development, New Architectures
- Decodetree
- Debugging
${QEMU} -d in_asm,op,op_opt,out_asm [-s -S|-g] ${TESTCASE}
log int,exec,op,op_opt (log all the micro-operations, register states, and interrupts/exceptions)
Prerequisites
- sh/make/glibc/glib/fdt/python3
- gcc or clang
- apt build-dep qemu
Building the QEMU
- ./configure --target-list=riscv32-softmmu,riscv32-linux-user --enable-debug --extra-cflags="-O0 -g3"
- make -j8


provenance-shape.ttl
aggregate-shape.ttl
annotation-shape.ttl
provenance-shape.ttl
aggregate-shape.ttl
annotation-shape.ttl
| URI | date/time created | mediatype | retrieved by | folder |
|---|---|---|---|---|
| uri | date created | mediatype | retrievedby | folder |
Validated against workflow shape-graph model
[other profile specific info to be included in future releases!!!]


My name is Semhar Issack. Accomplished Bio-chemist with a solid background in organic chemistry/biochemistry. Product separation, purification and analysis using HPLC, GC, NMR and MS. Thrives in a challenging environment while maintaining creative ingenuity.I have a graduate degree from the university of Eastern Finland. Currently i am based in portland, OR working and studying web-development, aspiring to be a software developer in accurate protein structure prediction. I am pursuing my software development career at Epicodus.
Master of Science: Biochemistry/Organic chemistry, 08/2013
University of Eastern Finland - Joensuu, Finland.
Chemistry Lab Assistant: Chemistry & Biology courses, 11/2013 - 07/2016
Eiran Aikuislukio (Eira high school for Adults) - Helsinki, Finland.
My projects are regarding the current profession I am pursuing, which is the web-development. I have listed some links below to help you navigate from there to get to know me more. Feel free to contact me via email<EMAIL_ADDRESS>for questions or feedback. I also encourage you to make changes to my codes in Github if you see fit to update it or fix errors. Lets make our world a better place to live by sharing and helping each other out.
A blog about a Finnish kitchen in Paris. Technologies used are HTML, CSS and bootstrap.
A travel blog about three favorite European cities.It made my American friend envious in a positive way. Technologies used are HTML, CSS.
A blog about my dog, my best friend. Technology used HTML, CSS.
A blog about best cookie recipe of a friend's father. Technology used HTML, CSS.
My goal in life is to study software development and apply the in-depth knowledge of protein structure & function(as a biochemist) along with the development of software-based tools(as a software developer) to create innovative products (software/hardware) that aid in accurate modeling and prediction of protein function. More to that, experience in protein function, protein data analysis, and software development will help me support a variety of research and development projects related to public safety, defense and national security as my long term plan in the future. The latter is of great importance to me as a refugee, because maintaining safety and peace means first priority and being vulnerable to violence could be eternal scar to haunt you.


| Countdown | |
|---|---|
| New Years Day | Martin Luther King Jr. Day |
| George Washington's Birthday | Memorial Day |
| Independence Day | Labor Day |
| Columbus Day | Veterans Day |
| Thanksgiving Day | Christmas Day |
| Test |
| Countdownbeta | |
|---|---|
| New Years Day | Martin Luther King Jr. Day |
| George Washington's Birthday | Memorial Day |
| Independence Day | Labor Day |
| Columbus Day | Veterans Day |
| Thanksgiving Day | Christmas Day |
| Test |
| School |
|---|
| Ancient Egyptian Social Class Project |
| Science Vocab |
| Greek Mythology Play Script |
| Prometheus Cartoon |


Turkey says Kurdish militia attack kills 10 people in Syrian town of Al-Bab
ANKARA (Reuters) - The Turkish Defence Ministry said on Saturday that a car bomb attack by Syrian Kurdish fighters killed 10 people and wounded more than 15 in the northern Syrian border town of Al-Bab, which Turkish forces seized in a 2016 offensive.
Turkey’s state-run Anadolu news agency said that 18 people were killed and at least 30 others were wounded in the attack. It said several cars and buildings in the vicinity of the blast had also been damaged.
Turkey and its Syrian rebel allies have so far mounted three separate offensives in northern Syria against Islamic State and the YPG Kurdish militia, seizing areas along its border. They launched another offensive against the YPG in northeastern Syria last month.
Ankara views the YPG, the main component of the U.S.-backed Syrian Democratic Forces (SDF), as a terrorist group linked to the outlawed Kurdistan Workers Party (PKK) that has waged a decades-long insurgency in Turkey.
In a statement on Twitter, the Defence Ministry said the YPG had detonated the car bomb in the Al-Bab bus terminal, killing 10 people.
“Inhumane and uncivilized PKK/YPG terrorists continue to target innocent civilians using the same methods as DAESH (Islamic State),” the ministry said.
Turkey’s latest offensive was widely condemned by Ankara’s Western allies, who said the assault could hinder the fight against Islamic State in Syria. Turkey has dismissed the concerns, saying it will continue to combat Islamic State.


Copyright © Jan Newmarch<EMAIL_ADDRESS>"Programming and Using Linux Sound - in depth"
by
Jan Newmarch
is licensed under a
Creative Commons Attribution-ShareAlike 4.0 International License
.
Based on a work at
https://jan.newmarch.name/LinuxSound/
.
If you like this book, please contribute using PayPal
Or Flattr me:


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Alternating Rows for Overviews
Change the background of every other row to help identify rows using the Stylus browser extension, to improve your reading experience. Stylus is a userstyles editor and manager. It injects a CSS design into webpages in order to override the present design of TOPdesk. The Stylus extension is available for Chrome and Firefox.
To enjoy alternating colors in TOPdesk overviews: install Stylus.
Installation and settings
- Install Stylus for Chrome, or Stylus for Firefox.
- Open this link in a new tab: "Install directly with Stylus" or use the link badge depicted at the top of this page.
- Go to the newly opened tab and click the Install style button there.
To quickly enable or disable the style:
- Make sure that you have an overview open.
- In the browser menu bar, click on the Stylus plugin icon.
- Tick or untick the style iframe: TOPdesk alternating rows.
Configure the colours
You can finetune the style to suit your specific needs.
- Make sure that you have an overview open.
- In the browser menu bar, click the plugin icon.
- Click the gear icon in the "iframe: TOPdesk alternating rows" entry. The style configuration opens.
- You can now personalize the background color for even and odd rows.


For
Firefox
:
- At the top of the Firefox window, click on the
Firefox button
and then click
Options
;
- Select the
Advanced
panel;
- Click on the
Network
tab;
- In the
Cached Web Content
section, click
Clear Now
.
For
Chrome
:
- Click the
Chrome menu
on the browser toolbar;
- Select
Tools
;
- Select
Clear browsing data
;
- In the dialog that appears, select the checkboxes for the types of information that you want to remove;
- Use the menu at the top to select the amount of data that you want to delete. Select
beginning of time
to delete everything;
- Click
Clear browsing data
.
With these steps you will clear your broswers cached content.
Good luck! :-)


We all know about the effect of smoking on your body. Specifically, the lungs can be seriously harmed after years of smoking.  If you smoke, these pictures may persuade you to stop. But if you aren't a smoker, then you should not view them.
If you think you are seriously ill, you should go see a doctor. Spending any amount of time researching your symptoms online could easily convince you that your cold is actually a rare genetic disease or that an upset stomach is cancer.
While it is just interesting to look for cancer causes or treatments online, growth causes or medicines on the web, there are some photographs that you might not have any desire to see. Search for cancer under the images section on Google you'll run over some frightening photographs. Seriously, don't look for these pictures.
It's not a really hard maths problem. It is dental world, a calculus bridge (also known as a tartar bridge) is intense oral plaque build-up that can lead to receding gums and bad breath. You should try to stay away from searching this.
For bartenders, a jigger is an exceptional apparatus used to precisely quantify liquor for a blended beverage. Don't mix them up with jiggers. A jigger flea is a parasite found in tropical climates. It is a terrifying insect that burrows into the skin and lays eggs. Make sure your search terms reflect an interest in mixology, rather than parasitic fleas.


| File | Statements | Branches | Functions | Lines | |||||
|---|---|---|---|---|---|---|---|---|---|
| actionTypes.js | 100% | 18/18 | 100% | 0/0 | 100% | 0/0 | 100% | 18/18 | |
| actions.js | 100% | 44/44 | 100% | 6/6 | 100% | 17/17 | 100% | 22/22 | |
| asyncValidation.js | 100% | 24/24 | 100% | 10/10 | 100% | 4/4 | 100% | 18/18 | |
| bindActionData.js | 100% | 21/21 | 100% | 12/12 | 100% | 5/5 | 100% | 8/8 | |
| createHigherOrderComponent.js | 95.05% | 192/202 | 89.01% | 81/91 | 83.87% | 26/31 | 87.01% | 67/77 | |
| createReduxForm.js | 100% | 48/48 | 100% | 27/27 | 100% | 12/12 | 100% | 15/15 | |
| createReduxFormConnector.js | 100% | 63/63 | 100% | 27/27 | 100% | 12/12 | 100% | 19/19 | |
| fieldValue.js | 100% | 12/12 | 100% | 7/7 | 100% | 3/3 | 100% | 9/9 | |
| getDisplayName.js | 100% | 4/4 | 100% | 3/3 | 100% | 1/1 | 100% | 3/3 | |
| getValues.js | 97.37% | 37/38 | 93.55% | 29/31 | 100% | 6/6 | 96.97% | 32/33 | |
| getValuesFromState.js | 95.65% | 22/23 | 95% | 19/20 | 100% | 3/3 | 95.24% | 20/21 | |
| handleSubmit.js | 100% | 50/50 | 96.15% | 25/26 | 100% | 6/6 | 100% | 33/33 | |
| initializeState.js | 97.92% | 47/48 | 92.86% | 52/56 | 100% | 8/8 | 97.06% | 33/34 | |
| isChecked.js | 100% | 12/12 | 100% | 8/8 | 100% | 1/1 | 100% | 11/11 | |
| isPristine.js | 100% | 23/23 | 100% | 26/26 | 100% | 1/1 | 100% | 22/22 | |
| isValid.js | 100% | 10/10 | 100% | 10/10 | 100% | 3/3 | 100% | 7/7 | |
| mapValues.js | 100% | 13/13 | 100% | 6/6 | 100% | 3/3 | 100% | 3/3 | |
| normalizeFields.js | 98.31% | 58/59 | 94% | 47/50 | 100% | 7/7 | 97.92% | 47/48 | |
| read.js | 96% | 24/25 | 95.83% | 23/24 | 100% | 1/1 | 95.83% | 23/24 | |
| readField.js | 98.06% | 152/155 | 96.91% | 94/97 | 88.89% | 16/18 | 98.15% | 106/108 | |
| readFields.js | 100% | 43/43 | 100% | 22/22 | 100% | 6/6 | 100% | 24/24 | |
| reducer.js | 98.5% | 197/200 | 91.74% | 100/109 | 97.5% | 39/40 | 97.5% | 117/120 | |
| removeField.js | 90% | 45/50 | 69.7% | 23/33 | 100% | 6/6 | 85.29% | 29/34 | |
| resetState.js | 100% | 18/18 | 94.74% | 18/19 | 100% | 4/4 | 100% | 14/14 | |
| setErrors.js | 96.55% | 56/58 | 92.31% | 48/52 | 100% | 10/10 | 94.59% | 35/37 | |
| silencePromise.js | 100% | 10/10 | 100% | 6/6 | 100% | 3/3 | 100% | 4/4 | |
| updateField.js | 100% | 48/48 | 100% | 35/35 | 100% | 3/3 | 100% | 35/35 | |
| wrapMapDispatchToProps.js | 100% | 22/22 | 100% | 10/10 | 100% | 6/6 | 100% | 10/10 | |
| wrapMapStateToProps.js | 100% | 20/20 | 100% | 10/10 | 100% | 5/5 | 100% | 9/9 | |
| write.js | 98.33% | 59/60 | 89.47% | 51/57 | 100% | 5/5 | 97.44% | 38/39 |


{% extends 'layout.html'%} {% load static %} {% block content %}
Dear visitor, welcome!
Tahtalıkaradut is a village in Musabeyli district of
Kilis Province, Turkey.
At 36°56′N 36°55′E
it is situated in the typical peneplain area of the south eastern Turkey.
It is 25 kilometres
north of Musabeyli and 58 kilometres north of Kilis. The population of
Tahtalıkaradut is 2000 as of 2020
The main products of the village are olive, grapes and cereals.
This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.
This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.
This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.
This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.
This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.
This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.
This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.
This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.
This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.


Preparation time
less than 30 mins
Cooking time
30 mins to 1 hour
Serves
Serves 4
A classic Italian pasta bake made with mushrooms, ham and truffle – a great dish to prepare in advance if you have people over. Serve with a crisp green salad.
Preheat the oven to 180C/160C Fan/Gas 4.
Heat the olive oil and fry the mushrooms with the garlic for two minutes.
Add the Parma ham, stir and remove from the heat.
Cook the butter and flour in a pan over a low heat until it lets off a nutty aroma. Stir in the milk, a little at a time until it is combined and thick.
Add the double cream and bring to the boil.
Tip the cooked mushrooms into the sauce, season well with salt and pepper, and add the parsley.
Butter a 24cm/9½in gratin dish and lay a pasta sheet inside it.
Spoon over the sauce and add a generous handful of Parmesan cheese. Dot with truffle oil or crumble over a little of the fresh truffle.
Repeat to make six layers, and finish with more Parmesan and dot with butter.
Bake in the oven for 25-30 minutes, or until bubbling and golden.


Exploring .NET Core Windows developers have always enjoyed the productivity boost you get with the .NET platform, tools like Entity Framework and ASP.NET, and the amazingly-powerful C# language. Now, .NET Core extends those same benefits to Linux-based systems, offering a tr...
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Skeuomorph Mobile Banking | Dark Mode 🌘 Guys, thank you for all the positive feedback and rebounds of my previous skeu-shots. It really motivates me to continue digging in this direction. I had no doubt to continue the theme, now in tot...
Neumorphism in user interfaces How UI trends reach for inspiration into the real world and what problems do we have to solve to make those trends work.
GC Handles | .NET Blog A customer asked me about analyzing perf related to GC handles. I feel like aside from pinned handles in general handles are not talked about much so this topic warrants some explanation, especially since this is a user facing feature. For some background...
bchavez/Bogus :card_index: A simple and sane fake data generator for C#, F#, and VB.NET. Based on and ported from the famed faker.js. - bchavez/Bogus
Scroll To Text Fragment - Chrome Platform Status This feature allows a user or author to link to a specific portion of a page, using a text snippet provided in the URL. When the page is loaded, the browser highlights the text and scrolls it into view. For example, the URL: [https://en.wikipedia.org/w...
Get more information at a glance with issue and pull request linking Now, anyone can connect an issue to a pull request from the issue directly using the new linked pull request section providing greater context to your workflow.


StormLib API Reference
SFileFindNextFile
bool WINAPI SFileFindNextFile( HANDLE hFind, // Find handle SFILE_FIND_DATA * lpFindFileData // Pointer to the search result );
Function SFileFindNextFile continues search that has been initiated by SFileFindFirstFile. When the caller finishes searching, the returned handle must be freed by calling SFileFindClose.
When the function succeeds, it returns nonzero and the SFILE_FIND_DATA structure is filled with information about the file. On an error, the function returns zero and GetLastError gives the error code.
| Available in Storm.dll | No |
| Ordinal number in Storm.dll 1.00 | N/A |
| Ordinal number in Storm.dll 1.09 | N/A |
Copyright (c) Ladislav Zezula 2003 - 2010


CGEXEC
Section: libcgroup Manual (1)Updated: 2009-03-15
Index Return to Main Contents
NAME
cgexec - run the task in given control groups
SYNOPSIS
cgexec [-g <controllers>:<path>] [--sticky] command [arguments]DESCRIPTION
The cgexec program executes the task command with arguments arguments in given control groups.
- -g <controllers>:<path>
-
defines control groups in which the task will be run.
controllers is a list of controllers and
path is the relative path to control groups
in the given controllers list.
This flag can be used multiple times to define multiple pairs of lists of controllers and relative paths. Instead of the list of all mounted controllers, wildcard b"*b" can be used.
If this option is not used then cgexec will automatically place the task to the right cgroup based on /etc/cgrules.conf.
- --sticky
-
If running the task command with this option, the daemon of
service cgred (cgrulesengd process) does not change both the task
of the command and the children tasks. Without this option,
the daemon does not change the task of the command but it
changes the children tasks to the right cgroup based on
/etc/cgrules.conf automatically.
EXAMPLES
cgexec -g *:test1 lsruns command ls in control group test1 in all mounted controllers.
cgexec -g cpu,memory:test1 ls -lruns command ls -l in control group test1 in controllers cpu and memory.
cgexec -g cpu,memory:test1 -g swap:test2 ls -lruns command ls -l in control group test1 in controllers cpu and memory and control group test2 in controller swap.
FILES
- /etc/cgrules.conf
- default libcgroup configuration file
-
SEE ALSO
cgrules.conf (5)
Index
This document was created by man2html, using the manual pages.
Time: 05:29:02 GMT, December 24, 2015


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{{ .content | markdownify | emojify }}
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{{ end }}Top 1 computer engineering school in France.
Artificial intelligence major.
Exchange student for 6 months
0
{{ .name }}
{{ . | markdownify }}
{{ end }} {{ if .button.enable }} {{ with .button }} {{ .label }} {{ end }} {{ end }}State-of-the-art implementation of a multi-camera vehicle re-identification. The main challenge of this project was to build a model able to extract features of cars in real-time to recognize the exact same car in different cameras. The model, trained on triplet loss, is capable to recognize fine-grained details: broken wheel, objects on the board, or stickers to differentiate two cars with the same model and color in a 360° fashion. I implemented the state-of-the-art of 2018 and adapted a pedestrian re-identification paper to improve the solution.
{{ if .button.enable }} {{ with .button }} READ MORE {{ end }} {{ end }}Coronary calcium scan is a test that measures the amount of calcium in the walls of the heart’s arteries. A patient with a high quantity of calcium in his arteries will inevitably die without the proper treatment. The goal of this project was to build a coronary calcium classifier to predict the severity of the patients heart disease. The model was able to predict for every calcium point in which artery it was located as it is very important to know if the calcium is in the main or in minor arteries. Trained the model on 3D X-ray data using a ResNet3D.
{{ if .button.enable }} {{ with .button }} READ MORE {{ end }} {{ end }}I designed an autonomous driving remote car by assembling a Raspberry on top of a remote-controlled car embedded with a Convolutional Neural Network. The model was trained on some data captured while driving the car using an xbox controller. This project was held during my last year at EPITA as a graduation project and was selected to be shown at my university open house. I took the project again a few months later and built a more sophisticated car along with a data generation module. I've won the RobotCars Winter 2018 championship and got ranked 3st at IronCar Summer 2018 tournament.
{{ if .button.enable }} {{ with .button }} READ MORE VIDEO {{ end }} {{ end }}From scratch implementation in Pytorch of the most used machine learning algorithms. Each method is clearly explained using latex formulas and fully commented code. Every post can be found in my blog as well as on my Github. I implemented the following algorithms: support vector machine, decision tree, random forest, adaboost, k-means, gaussian mixture model, naive bayes classifier, polynomial regression, k-nearest neighbors, logistic regression, and linear regression.
{{ if .button.enable }} {{ with .button }} READ MORE {{ end }} {{ end }}CUDA C++ is a GPU programming language that uses a grid based approach to parallelisation. Each GPU unit has a coordinate in the grid and computes a sub part of the process that allows a massive computing speed up. I implemented blurring, de-noising and edge detection algorithms from scratch using only exclusively the CUDA C++ standard library.
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This section is aimed to help you get a Web service running in a short time using WSF/C++, and consume that service using a WSF/C++ client.
First, download the latest binary release from WSO2 WSF/C++ homepage. Once you download the correct binary that suits your platform, all that you require to get it running is to extract the package to a folder of your choice, and set the WSFCPP_HOME environment variable to point to this extracted folder. For Linux, you may have to set the LD_LIBRARY_PATH environment variable to include the lib folder (e.g. add $WSFCPP_HOME/lib). For MS Windows, you will have to add the lib folder to your PATH variable to include the WSF/C++ DLLs to your path.
Now you should be able to change the directory to the bin folder of the extracted folder, and run the simple axis server in one command shell. Then change the directory to samples/bin in another command shell and run any of the samples there (you may have to set the environment variables in this new shell as well). Please see the installation guide for more detailed explanation.
Once you have WSF/C++ up and running successfully, you can start writing your own services and clients. The following sections explain how to write your first service and client with WSF/C++..
Let's see how you can write your first Web Service with WSF/C++ and how to deploy it.
The first service that we are going to write is named "hello" with a single operation named "greet" in the service. This "greet" operation, when invoked by the client, will expect the client to send a greeting in the request, and in turn send a greeting in the response. Following are examples of XML payloads exchanged between the client and the service:
Request:
<greet>
Hello Service!
<greet>
Response:
<greetResponse>
Hello Client!
<greetResponse>
The steps to be followed when implementing a service with WSF/CPP include
init(), invoke(), and onFault() are the methods that are
defined in the ServiceSkeleton class should be implemented
by the service. Within the init() method, any service specific initialization can be done. Within the invoke method, the selection of which method should be
called is handled. onFault() should implement the logic for handling fault senarion in a service.Look for the greet method in the hello.cpp source file.
This method implements the business logic for the greet operation. We will be calling
this method from our implementation of the invoke method.
Basically, this method
receives the request payload as an
OMElement.
process it to understand
the request string, and
prepares the response as an OMElement
and
returns it back.
The invoke method of the ServiceSkeleton is the point of entry for invoking the operations. Hence in our implementation of the invoke method, we have to define how the operations are to be called.
Look for the invoke
method in the hello.cpp source file.
In our implementation of the invoke method
, we call the greet method which implement the greet operation. As we have only one
operation, the task is simple here. If we had multiple operations, we will have to look into the information in the MessageContext to map it to the exact
operation. The WSF/CPP framework will call the invoke method with an OMElement, containing the request payload, and MessageContext
instance, containing the MessageContext
information.We can use the MessageContext to extract whatever information we deem necessary that is related to the incoming message. The WSF/CPP framework
expects the invoke method to return a pointer to an OMElement
, representing the response payload.
The services.xml file contains details on the service that would be read by the deployment engine during server start up time. The following shows the contents for the services.xml file for the hello service.
<service name="hello">
<parameter name="ServiceClass" locked="xsd:false">hello</parameter>
<description>
Quick start guide hello service sample.
</description>
<operation name="greet"> <messageReceiver class="wsf_cpp_msg_recv" /> </operation>
</service>
The service configuration shown above specifies that the name
of the
service is hello.
The value of the "ServiceClass", "hello"
in this case, will be mapped
to the
service implementation by the deployment engine as libhello.so on Linux or
hello.dll on MS Windows. The description element contains a brief
description
of the service. There can be one or more operation elements. For this sample, we
only have one operation, with the name "greet".
It is important to specify the messageReceiver option as well. Message Recevier
is the handler which finds the correct service and calls the invoke method. Since
WSF/CPP is built on top of WSF/C, you are able to deploy services written in both
C and C++. Therefore , there exist message receivers for both C and C++. If you
do not specify the message Receiver option, it will pick the default message receiver,
which is the C one.
You can compile the service sample as shown below.
On Linux:
g++ -shared -olibhello.so -I$WSFCPP_HOME/include -I$WSFCPP_HOME/include/axis2-1.6.0/ -L$WSFCPP_HOME/lib -laxutil -laxis2_axiom -laxis2_parser -laxis2_engine -lwso2_wsf -lpthread -laxis2_http_sender -laxis2_http_receiver hello.cpp
On MS Windows:
to compile,
cl.exe /D "WIN32" /D "_WINDOWS" /D "_MBCS" /D "AXIS2_DECLARE_EXPORT" /D "AXIS2_SVR_MULTI_THREADED" /w /nologo /I %WSFCPP_HOME%\include /c hello.cpp
to link,
link.exe /nologo /LIBPATH:%WSFCPP_HOME%\lib axutil.lib axiom.lib axis2_parser.lib axis2_engine.lib wso2_wsf.lib /DLL /OUT:hello.dll *.obj Make sure to run the vcvars32.bat file before running the compilation commands. vcvars32.bat file set the correct environment settings.
To make the service available to be consumed by the clients, we have to deploy the service. To deploy the service, you have to create a folder named 'hello' in the WSFCPP_HOME/services folder, and copy the services.xml file and the shared library file (libhello.so on Linux or hello.dll on MS Windows) into that folder.
To verify that your service has been correctly deployed, you can start the simple axis server and then browse the list of deployed services using a Web browser. To start the simple axis server, you can go to the WSFCPP_HOME/bin folder and run the executable axis2_http_server. The default URL that you can test the service list with is http://localhost:9090/axis2/services. You should get an entry for the hello service on the page that is displayed.
WSF/CPP does not support dynamic WSDL generation. However, it is possible to attach the contract you used to generate the service skeleton, to the respective service. This can be done in two ways.
If you choose the first option, you will have to copy the WSDL
file to the folder in which the service DLL is found. The name of the
WSDL file should be the name of the service. And, if you choose the
second option, you will have to make use of the wsdl_path
parameter in the services.xml file. More info on how this can be done
is found under the services.xml
section.
An example of the second option can be found the services.xml of the echo sample service, which is commented. An example of the first option in use is seen in the Calculator sample service.
The static WSDL file can be accessed by appending ?wsdl
to the service end-point. You can view the WSDL provided for the
Calculator sample, by pointing to http://localhost:9090/axis2/services/Calculator?wsdl.
Now that you know how to write a service with WSF/CPP , let's see how to write a client to consume that service. The request payload that the client will be sending to the service was described in the above section. The client has to prepare the payload, send it to the service, and then receive and process the response.
The steps to be followed when implementing a client with WSF/CPP:
Options class provide
methods for configuring the client.
For example, you can use setTo() method
in the Options classs to set the
endpoint address of the service to be consumed by the client. ServiceClient class provides the basic client
API for
consuming Web services. It provides a simplified and easy to use API. ServiceClient
takes has 3 different constructors. A ServiceClient instance can be created by providing
the repository location. For the purpose of our sample, you can use the WSFCPP_HOME
as the repository. The concept of repository
is explained in detail in a later section.options = new Options();
address = "http://localhost:9090/axis2/services/hello";
options->setTo(address);
In the above section of code, an Options instance is created first. You can specify the Then an endpoint reference instance is created with the address of the location of the service. Finally, the created endpoint is set as the "to" address of the options. The "to" address indicates where the request should be sent to.
svcClient = new ServiceClient(clientHome);
svcClient->setOptions(options);
payload = buildRequest();
response = svcClient->request(payload);
After creating and preparing the options, the next step is to create a service client instance and use it to send the request and receive the response. The code fragment given above shows how options can be set on top of the ServiceClient and how to invoke the request operation with a request payload. Once the response is received, the response payload will be stored in the response, which is a pointer to an OMElement that can be used to process the response further.
You can compile the client sample as shown below.
On Linux:
g++ -o hello -I$WSFCPP_HOME/include/axis2-1.6.0/ -L$WSFCPP_HOME/lib -laxutil -laxis2_axiom -laxis2_parser -laxis2_engine -lpthread -laxis2_http_sender -laxis2_http_receiver -lwso2_wsf hello.c -ldl -Wl,--rpath -Wl,$WSFCPP_HOME/lib
On MS Windows:
to compile,
cl.exe /nologo /D "WIN32" /D "_WINDOWS" /D "_MBCS" /I %WSFCPP_HOME%\include /c hello.c
to link,
link.exe /LIBPATH:%WSFCPP_HOME%\lib axutil.lib axiom.lib axis2_parser.lib axis2_engine.lib wso2_wsf.lib /OUT:hello.exe *.obj
WSF/C++ uses the same repository structure used by WSF/C. Therefore the following description of Repository folder is valid for WSF/C++ as well.
Repository is a folder where all Axis2/C related configurations as well as services and modules are located. The following shows the folder structure of the repository:
Here the name of the repository folder is axis2c_repo. In your system, you can specify any folder name of your choice. There are three sub folders available in the repository. In addition to that, the axis2.xml configuration file is also located in the repository. The following table describes the purpose of the repository contents.
| Folder/File Name | Description |
|---|---|
|
lib |
The lib folder contains the libraries required to run the Axis2/C engine. While you can afford to have the shared libs of Axis2/C in a location of your choice, the dynamically loaded shared libs, parser, transport receiver and transport sender has to be in the repository lib folder. It is mandatory that the lib folder is there in the repository. In addition to WSF/C libraries, lib folder contains WSF/C++ specific library files which include C++bindings to WSF/C and Rampart Security Library |
|
modules [optional] |
The modules folder contains the modules deployed with Axis2/C. Each module deployed will have its own sub folder inside the modules folder. For example, if the addressing module is deployed, then there will be a sub folder named addressing inside the modules folder of the repository. At deployment, the Axis2/C deployment engine would traverse the modules folders to find out what modules are available. The modules folder is optional. If it is empty or non-existent, that means that there are no deployed modules. |
|
services [optional] |
The services folder contains the services deployed with Axis2/C. Each service deployed will have its own sub folder inside the services folder, or live inside one of the sub folders. At deployment, the Axis2/C deployment engine will traverse the services folders to find out what services are available. The services folder is optional. If it is empty or non-existent, that means that there are no deployed services. |
|
axis2.xml |
The axis2.xml file is the configuration file of Axis2/C. |
Both clients as well as the services written using WSF/C++ can use the same repository. However you can use one repository for the server side and another one for the client side. The services folder is used only when the repository is used by the server side. When the repository is used by the client, the services folder, if present, will not be used.
The WSF/C++ binary distribution, when extracted, can be considered as ready for use as your repository folder. If you are building WSF/C++ from the source distribution, when you build the source, including the samples, the installation destination will be ready for use as your repository folder. The simple axis server (that is axis2_http_server binary), the client samples, and the HTTPD module (Axis2 Apache2 module) require the repository folder to be specified in order to run correctly.
As described earlier, all the modules are placed inside the
modules folder
of the repository, and each module will have its own sub folder within
the
modules folder.
The folder in which a module is placed must have the same name as the
module
name. For example, the addressing module will be placed in a sub folder
named
addressing.
Inside the folder corresponding to a module, the shared library implementing the module and the module configuration file, module.xml, is placed. It is a must that these two files are present inside each folder representing a module. The module.xml file will be processed by the deployment engine to find out module specific information such as the module name, set of handlers, the flows into which those handlers are to be added, etc.
All the services are placed inside the services folder of the repository, and each service will be in one of the sub folders within the services folder. Axis2/C has a concept called service groups, where there can be one or more services inside a service group. A single stand alone service is assigned a service group with the same name as that of the service by the Axis2/C engine for the purpose of easy handling. Therefore the sub folders in the services folder correspond to the service groups.
A service, if deployed as a stand alone service, will reside inside a folder with the same name as that of the service. For example, the echo service will be placed in a sub folder named echo. The shared library implementing the service and the service configuration file, the services.xml, will be placed inside the folder corresponding to a service. Given the fact that the engine treats the folders to represent service groups and not a single service, the configuration file is called services.xml. However, you can always place a single service inside a single folder, which is the most common use case.
Each sub folder within the services folder should have at least one shared lib implementing a service and a services.xml file. If it is a real service group, there will be multiple shared libs, yet there is only one services.xml file configuring all those services. The services.xml file is processed by the deployment engine to find out the service group and the service specific information such as the service group name, service name, the set of operations for each service, etc.
We have already seen how to write a service in the Quick Start Guide section of this manual. This section covers the service API of WSF/C++ in more detail.
ServiceSkeleton class
is an interface for implementing services. WSF/C++ does not provide
any concrete implementation of this interface. It is the responsibility
of
the service implementers
to implement this interface. To implement the interface, you should implement the
virtual functions defined in the ServiceSkeleton class. Then, include the WSF_SERVICE_INIT
macro which preforms the service loading and unloading work.
The following table details the signatures of the virtual methods defined in the ServiceSkeleton class that should be implemeneted by a service implementation.
| Function Signature | Description |
|---|---|
virtual void WSF_CALL init(); |
Initializes the Service object instance. This method is called from the engine once per deployed service, during the first request made to the service. |
virtual OMElement* invoke(OMElement *inMsg, |
Invokes the service implementation. You have to implement the logic to call the correct functions in this method based on the name of the operation being invoked. |
virtual OMElement* onFault(); |
This method is called by the engine if a fault is detected. |
virtual ~ServiceSkeleton(); |
Implement the service specific destructor for freeing resources allocated by the service. |
Include the WSF_SERVICE_INIT(<Service Class Name>) within your service code. This macro takes the service constructor name as the agrument which is used to instantiate an instance of the service class. This instantiated object is loaded to the system and is used for services invocations their after.
Note that service object instantiation happens once per service. When the first request is received by the service, a service instance is created and initialized. The same object instance will be re-used by the subsequent requests.
You can find an example on how to implement the service skeleton interface in the hello.cpp source file, which is the example used in the Quick Start Guide. More advanced samples can be found in the samples folder of the WSF/CPP distribution.
The primary client API to be used with WSF/CPP is ServiceClient API. This
is meant to be an
easy to use API for consuming services. If you want to do more complex
tasks,
such as invoking a client inside a module, or wrap the client API with
another interface, you may need to use axis2_op_client API which would require writing
some C code.
The behavior of the ServiceClient can be fine tuned with the Options instance passed to the ServiceClient. You can set the options by creating an Options instance. The bare minimum that you need to set is the endpoint URI to which the request is to be sent. An example of this was given in the Quick Start Guide section.
The ServiceClient interface serves as the primary client interface for consuming services. You can set the options to be used by the service client and then invoke an operation on a given service. There are several ways of invoking a service operation. The method of invoking an operation depends on 3 things. They are,
Many service operation invocation scenarios can be obtained by combining the above three factors. The ServiceClient provides the necessary API calls to achieve this.
Deciding the Message Exchange Pattern (MEP)
There are 2 message exchange patterns.
In the Out-Only MEP, the client doesn't expect a reply from the server. The service client provides two methods of using the Out-Only MEP.
| Service Client Method Signatures | Description |
|---|---|
WSF_EXTERN bool WSF_CALL send(OMElement * payload, std::string action) throw (AxisFault); WSF_EXTERN bool WSF_CALL send(OMElement * payload, std::string operation, std::string action) throw (AxisFault); |
These methods are used to interact with a service operation whose MEP is Robust Out-Only. If an error happenes , it will be reported back to the client. Also client side errors will be reported such as host unknown |
WSF_EXTERN bool WSF_CALL send(OMElement * payload, bool robust, std::string operation, std::string action) throw (AxisFault); WSF_EXTERN bool WSF_CALL send(OMElement * payload, bool robust, std::string action) throw (AxisFault); |
These methods are used to interact with a service operation whose MEP is Out-Only.
When the robust option is set to true,t his method reports any
errors back to the caller if a fault triggers
on the server side. When
robust options is set to false, the server side errors will not
be reported, however the client errors will be reported.
|
WSF_EXTERN OMElement * WSF_CALL request(OMElement * payload, std::string action) throw (AxisFault); WSF_EXTERN OMElement * WSF_CALL request(OMElement * payload, std::string operation, std::string action) throw (AxisFault); |
These methods are used to interact with a service operation whose MEP is In-Out. It sends an XML request and receives an XML response. Returns a pointer to the OMElement representing the XML response. This method blocks the client until the response arrives. |
WSF_EXTERN OMElement * WSF_CALL request(OMElement * payload, ICallback * callback, std::string action) throw (AxisFault); WSF_EXTERN OMElement * WSF_CALL request(OMElement * payload, ICallback * callback, std::string action) throw (AxisFault); |
These methods are used to interact with a service operation whose MEP is In-Out. It sends an XML request and receives an XML response. By specifying the callback, the methods allows aysnchrnous invocations. In this case, the method return after sending the request, and the callback will be invoked, when the response is received. |
Please have a look at the ServiceClient.h
header file for
more information on the above mentioned functions, as well as other methods which allowed different
configuration options..
This will determine whether the client would block for the
response
(synchronous) or return immediately expecting the response to be
handled by a
callback (asynchronous, in other words non-blocking) in an Out-In MEP
scenario.
Request method can be used for both Synchronous and Asynchronous mode of invocations.
The parameters passed will determine the behavior of the method as described above.
If the transport is two-way, then only one channel is used,
which means
the request is sent and the response is received on the same channel.
If the
transport is one-way, then the request is sent on one channel and the
response is received on a separate channel.
If we want to use a separate channel for the response, a separate
listener
has to be started to receive the response, This can be done by setting
the
separate listener option to true using the
setUseSeparateListener
method in above the
options.
Please have a look at the echo_blocking_dual
sample to see
how to set the separate channel option.
Please see Appendix D for further details on setting options.
WSF/CPP comes with plain old XML (POX) like REST support. A
given service
can be exposed both as a SOAP service as well as a REST service. By
default,
your service will support SOAP as well as REST, however, your service
operations
will only be available for SOAP. In order to enable REST for your
operations you
need to add one or more parameters under your operation, in the services.xml.
If you want to consume Web services using REST style calls, you can use
the HTTP
POST method, the HTTP GET method, the HTTP HEAD method, the HTTP PUT
method or
the HTTP DELETE method.
The following example code fragment shows how to set up a client enabling a REST style invocation.
Use the setEnableREST method to configure the client for a REST Style invocation.
You can use the same code that you use with a SOAP call, and do REST style invocation by just enabling REST using the option setting shown above.
The default HTTP method used with REST is HTTP POST. If you need to change it to the HTTP GET method, the following needs to be done.
options->setHTTPMethod(AXIS2_HTTP_GET);
Similarly you can use AXIX2_HTTP_HEAD to change it to the HTTP HEAD method, or AXIX2_HTTP_PUT to change it to the HTTP PUT method, or AXIX2_HTTP_DELETE to change it to the HTTP DELETE method.
Please have a look at the echo_rest
sample for a complete
source code on how to use REST.
You basically need to add the REST Location, and the REST
Method parameters to the services.xml
to enable REST in a service operation. The REST location is the
template that needs to be matched
to find your operation, and the REST Method is the HTTP Method
associated with the service.
Note that the REST Method is optional for each operation. If no REST
Method is specified, POST,
will be assumed. Optionally you may specify the default REST Method for
all operations at the service
level. Then, if you haven't specified a REST Method for your operation,
the default REST Method
specified will be assumed instead of POST. Please have a look at the echo
sample
service for a complete source code on how to set up REST. Shown below
is an example, on how to
configure the locate
operation to work with
HTTP GET on REST.
<operation name="locate">
<parameter name="RESTMethod">GET</parameter>
<parameter name="RESTLocation">location/{lat}/{long}</parameter>
</operation>
The corresponding request would look like, http://www.sample.org/service/location/34N/118W
,
which would return Los Angeles, California. In here, the portion location
is fixed and lat
and long
are optional parameters which will be captured to the payload.
It is also possible to enable a single service operation for
SOAP as well as REST. This can be done by specifying a REST Location
that does not contain the operation name. The locate
operation is an example to such a case. Thus, for a SOAP invocation,
you need to use http://www.sample.org/service/locate
,
as the end point or WS-Addressing Action.
WSF/CPP allows you to send and receive binary data with SOAP messages using MTOM/XOP conventions. When sending and receiving attachments, you have to use the ServiceClient API to perform the send and receive operations, and provide or consume binary data in relation to the AXIOM payloads.
In order to send a binary attachment, you need to build the AXIOM payload and attach the data handler with binary content to the payload.
<soapenv:Body>
<ns1:mtomSample xmlns:ns1="http://ws.apache.org/axis2/c/samples/mtom">
<ns1:fileName>test.jpg</ns1:fileName>
<ns1:image>
<xop:Include xmlns:xop="http://www.w3.org/2004/08/xop/include"
href="cid:1.f399248e-8b39-1db1-3124-0015c53de2e5@apache.org"></xop:Include>
</ns1:image>
</ns1:mtomSample>
</soapenv:Body>
In the above sample payload shown, we place our image file as text within an image element
imageEle = new OMElement("image"); dataHandler = new OMDataHandler(filename,"image/jpeg"); dataText = OMText(imageEle, dataHandler); When sending attachments, you can configure the client either to send the attachment in the optimized format or non-optimized format.
To do this, set the option options->setEnableMTOM(true);
or the setting
<enableMtom>true</enableMtom>
in
axis2.xml
If enableMTOM is set to True, the attachment is sent as it is, out of the SOAP body, using MIME headers. Also the payload will have an XOP:Include element, referring to the MIME part that contains the binary attachment. Sending the attachment as it is, in pure binary format, is called binary optimized format. In the case of binary non-optimized format, where enableMTOM is False, the attachment content is sent in the payload itself, as a base64 encoded string.
A module is a set of handlers that helps to extend the message processing behavior of the engine. Modules have the concepts of being Available and Engaged associated with them. Available means modules are deployed in the system but not activated. They will be activated only after being engaged. Every module comes with its own module.xml file . This module.xml file specifies the module specific handlers and the phases into which the handlers are to be placed in the handler chain. Some of the module specific handlers may be put into system predefined phases. In that case, the module.xml file should specify where to put the handlers relative to the others in that phase. Sometimes a module may define its own phase. In that case, some of the module specific handlers may be put into that phase. The handlers added to the system predefined phases (global handlers) are invoked for every message that comes to or goes out from the system. The handlers in the module specific phase are invoked only for the messages invoking the operations that engage that module. Engaging a module means correctly adding the handlers of a particular module to one or more phases. Once the module is engaged, the handlers and the operations defined in the module are added to the entity that engaged them.
Before engaging a module, the following steps have to be followed.
The following is an example of engaging a sample module called the logging module with Axis2/C.
In the module.xml file, the handlers of the module and the phases to which they are to be added have to be specified. Below is the module.xml file of the sample logging module.
<module name="logging" class="axis2_mod_log">
<inflow>
<handler name="LoggingInHandler" class="axis2_mod_log">
<order phase="PreDispatch"/>
</handler>
</inflow>
<outflow>
<handler name="LoggingOutHandler" class="axis2_mod_log">
<order phase="MessageOut"/>
</handler>
</outflow>
<Outfaultflow>
<handler name="LoggingOutHandler" class="axis2_mod_log">
<order phase="MessageOut"/>
</handler>
</Outfaultflow>
</module>
In the above shown module configuration file, the name of the module is logging. There are two handlers in this module, the LoggingInHandler and the LoggingOutHandler. The LoggingInHandler is placed into the PreDispatch phase of the in flow. The LoggingOutHandler is placed into the MessageOut phase of both the out flow and the fault out flow.
The above module.xml file should be copied to a folder named "logging" (because the module name is "logging") inside the <WSFCPP_INSTALL_DIR>/modules folder. The module libraries containing the handler implementation should also be copied to the same folder. According to the module.xml file shown above, the name of the shared library file should be libaxis2_mod_log.so on Linux and axis2_mod_log.dll on MS Windows.
Module specific phases have to be added after the system
predefined
phases. The following example shows where to add the module specific
phases.
Look for the phaseOrder
elements in the
axis2.xml file. Note the
comment lines:
<!-- User defined phases could be added here -->
You can add user defined phases after the above comment line
into any of the
flows. The type
attribute of the phaseOrder
element
indicates the flow.
For the logging module example, user defined phases are not required. All the module specific handlers are added to system predefined phases as specified in the module.xml file.
The following is an example of engaging the logging module to
the echo
service. This can be done by simply adding <module
ref
="logging"/>
in the services.xml file of the echo
service. This
informs the Axis2/C engine that the module "logging" should be engaged
for
this service. The handlers inside the module will be executed in their
respective phases as described by the module.xml.
<service name="echo">
<module ref ="logging"/>
<parameter name="ServiceClass" locked="xsd:false">echo</parameter>
<description>
This is a testing service, to test if the system is working or not.
</description>
<operation name="echoString">
<!--messageReceiver class="axis2_receivers" /-->
<parameter name="wsamapping" >
http://ws.apache.org/axis2/c/samples/echoString
</parameter>
</operation>
</service>
One important thing to note here is that because the logging module's handlers are placed into the global phases, even though the logging module is engaged only to the echo service, the module will be engaged globally. This is a feature of the Axis2 architecture, not a bug. When invoked, the handlers in a module can check whether the module has been engaged to a particular service, and act accordingly.
If we want to engage a module for every service deployed in
the Axis2/C
system, we can add the <module ref
="logging"/>
entry in
the axis2.xml file. This will inform the Axis2/C engine to invoke the
handlers associated with the module for every message coming in or
going out
for all the services deployed.
On the client side, if <module ref
="logging"/>
is
added in the axis2.xml, the handlers specific to the logging module
will be
invoked for every request the client sends and every response the
client
receives. If only a particular client wants to engage the module, it
can be
done by engaging the module programmatically. This can be done by
adding the
following line in the client code after setting the options.
svcClient->engageModule("module-name");
Remember to replace "module-name" with the name of the module you want to engage. For example to engage the addressing module you can use:
svcClient->engageModule(AXIS2_MODULE_ADDRESSING);
WS-Addressing provides mechanisms to address Web services and messages. With WSF/CPP, you can use both WS-Addressing version 1.0 as well as the submission version.
WS-Addressing is implemented as a module. Hence as explained in the previous section, the addressing module can be engaged both on the client side as well as on the server side.
The WS-Addressing module can be globally engaged by adding the
<module ref="addressing"/>
line
to the axis2.xml file.
The WS-Addressing module can also be programmatically engaged
using the
following line of code with the service client API
engageModule(AXIS2_MODULE_ADDRESSING);
WS-Addressing related options can be set using the methods in Options class.
If the
addressing module is engaged, there are no options to be set on the
server
side. The server will employ WS-Addressing if the incoming requests
have
WS-Addressing headers.
There is a mandatory requirement for using WS-Addressing on the client side with WSF/CPP. That is to set a WS-Addressing action that represents the operation to be specified in the request or send method
svcClient->request(payload, "http://ws.apache.org/axis2/c/samples/echoString");
In addition to the action, which is mandatory, there are other WS-Addressing related headers that can be sent in a message. WSF/CPP supports to set those headers as options at the client level. The following functions are used to set them.
SetReplyTo(<Reply to URI>);
Sets thewsa:ReplyTo
header. The ReplyTo header contains the endpoint to send reply messages. The ReplyTo header is required when the response comes in a separate channel (when using a dual channel).
SetFaultTo(<Fault to URI>)
Sets the wsa:FaultTo
header. This
contains the endpoint to
direct fault messages.
Simple Axis2 HTTP Server is the inbuilt HTTP server of Axis2/C which comes with
WSF/CPP.
Synopsis :
axis2_http_server [-p PORT] [-t TIMEOUT] [-r REPO_PATH] [-l LOG_LEVEL] [-f LOG_FILE] [-s LOG_FILE_SIZE]
You can use the following options with simple axis HTTP server.
-p PORT port number to use, default port is 9090
-r REPO_PATH repository path, default is ../
-t TIMEOUT socket read timeout, default is 30 seconds
-l LOG_LEVEL log level, available log levels:
0 - critical 1 - errors 2 - warnings
3 - information 4 - debug 5- user 6 - trace
Default log level is 4(debug).
-f LOG_FILE log file, default is $WSFCPP_HOME/logs/axis2.log
or axis2.log in current folder if WSFCPP_HOME not set
-s LOG_FILE_SIZE Maximum log file size in mega bytes, default maximum size is 1MB.
-h display the help screen.
Example :
axis2_http_server -l 3 -p 8080 -r $WSFCPP_HOME -f /dev/stderr
Synopsis :
axis2_http_server.exe [-p PORT] [-t TIMEOUT] [-r REPO_PATH] [-l LOG_LEVEL] [-f LOG_FILE] [-s LOG_FILE_SIZE]
You can use the following options with simple axis HTTP server.
-p PORT port number to use, default port is 9090
-r REPO_PATH repository path, default is ../
-t TIMEOUT socket read timeout, default is 30 seconds
-l LOG_LEVEL log level, available log levels:
0 - critical 1 - errors 2 - warnings
3 - information 4 - debug 5- user 6 - trace
Default log level is 4(debug).
-f LOG_FILE log file, default is %WSFCPP_HOME%\logs\axis2.log
or axis2.log in current folder if WSFCPP_HOME not set
-s LOG_FILE_SIZE Maximum log file size in mega bytes, default maximum size is 1MB.
-h display the help screen.
Example :
axis2_http_server.exe -l 3 -p 8080 -r %WSFCPP_HOME% -f C:\logs\error.log
To build WSF/CPP with the Apache HTTP server module, also called mod_axis2, you need to provide the following configuration options on the Linux platform:
./configure --with-apache2=[path to Apache2 include directory] [other configure options] NOTE: Some Apache2distributions, specially development versions, install APR (Apache Portable Run-time) include files in a separate location. In that case, to build mod_axis2, use: ./configure --with-apache2=[path to Apache2 include directory] --with-apr=[path to APR include directory]
[other configure options]
When building WSF/CPP, you will already have installed mod_axis2.so file to your install directory.
On the MS Windows platform, you have to provide the Apache2 install location in the configure.in file with the setting APACHE_BIN_DIR. Example:
APACHE_BIN_DIR = "C:\Program Files\Apache Software Foundation\Apache2.2"
Based on the Apache HTTP server version you are using, you also need to set the setting APACHE_VERSION_2_0_X in the configure.in file. If you are using Apache 2.2 family, this setting should be set to 0,else set it to 1.
APACHE_VERSION_2_0_X = 0
You will find the mod_axis2.dll in <WSFCPP_INSTALL_DIR>\lib directory when you have build the source.
NOTE: To execute some of the commands given below, you might require super user privileges on your machine. If you are using the binary release of Axis2/C, please note that it is built with Apache 2.2.
Copy the mod_axis2 shared library (libmod_axis2.so.0.6.0 on Linux and mod_axis2.dll on MS Windows) to the Apache2 modules directory as mod_axis2.so
On Linux
cp $WSFCPP_HOME/lib/libmod_axis2.so.0.6.0 /usr/lib/apache2/modules/mod_axis2.so
On MS Windows
copy /Y "%WSFCPP_HOME%\lib\mod_axis2.dll" C:\Apache2\modules\mod_axis2.so
Edit the Apache2's configuration file (generally httpd.conf) and add the following directives at the end of the file.
LoadModule axis2_module MOD_AXIS2_SO_PATH
Axis2RepoPath AXIS2C_INSTALL_DIR
Axis2LogFile PATH_TO_LOG_FILE
Axis2LogLevel LOG_LEVEL
Axis2ServiceURLPrefix PREFIX
Axis2MaxLogFileSize SIZE_IN_MB
<Location /axis2>
SetHandler axis2_module
</Location>
Please note that you have to fine tune the above settings to
mach your
system.
MOD_AXIS2_SO_PATH has to be replaced with the full path to
mod_axis2.so,
for example, /usr/lib/apache2/modules/mod_axis2.so
on Linux, or C:\Apache2\modules\mod_axis2.so
on MS Windows
AXIS2C_INSTALL_DIR has to be replaced with the full path to Axis2/C
repository, for example, /usr/local/axis2
on
Linux, or c:\axis2c
on MS Windows. Note that
repository path should
have read access to the daemon user account under which the Apache2
HTTPD
process is run.
PATH_TO_LOG_FILE has to be replaced with the full path to where you
wish to
have the Axis2/C log file, for example, /tmp/axis2.log
on Linux, or C:\Apache2\logs\axis2.log
on MS
Windows. Note that the log
file path should have write access to the daemon user account under
which the
Apache2 HTTPD process is run.
LOG_LEVEL has to be replaced with one of the following values: crit,
error,
warn, info, debug, trace. These log levels have the following meanings:
SIZE_IN_MB must be replaced by the size of the particular
resource in MB, rounded to
the nearest whole value.
PREFIX has to be replaced with the prefix to be used with the service
endpoints. This is optional and defaults to "services".
As an example, if you have "web_services" as the prefix, then all the
services hosted would have the endpoint prefix of :
http://localhost/axis2/web_services
If you wish, you can also change the location as well by replacing
"/axis2" in <Location /axis2> setting with whatever you
wish.
NOTE: If you want to use a Shared Global Pool with Apache you have to give another entry called Axis2GlobalPoolSize.You have to give the size of the shared global pool in MB.If you doesn't set the value or if you set a negative value Apache module doesn't create shared global pool.
Axis2GlobalPoolSize SIZE_IN_MB
To ensure that everything works fine, start Apache2 (restart
if it is
already running) and test whether the mod_axis2 module is loaded
correctly by
accessing the URL: http://localhost/axis2/services.
This should show the list of services deployed with WSF/CPP. Then you should be able to run clients against this endpoint. Example:
echo http://localhost/axis2/services/echo
In case things are not working as expected, here are some tips on how to troubleshoot:
When you have nmake axis2_iis_module
In this document I assume that the mod_axis2_IIS.dll
is in the directory
c:\wso2-wsf-cpp-bin-x.y.z-win32\lib
and
WSFCPP_HOME
is c:\wso2-wsf-cpp-bin-x.y.z-win32
Add the following key to the registery.
HKEY_LOCAL_MACHINE\SOFTWARE\Apache Axis2c\IIS
ISAPI
Redirector
Add a string value with the name axis2c_home
and a
value of c:\wso2-wsf-cpp-bin-x.y.z-win32
Add a string value with the name log_file
and a value
of
c:\wso2-wsf-cpp-bin-x.y.z-win32\logs\axis2.log
Add a string value with the name log_level
.
The value
can be either trace
, error
,
info
, critical
, user
,
debug
, or warning
.
You can add a string value with the name services_url_prefix
. This is optional and defaults to "/services".
As an example, if you have "/web_services" as the prefix, then all the
services hosted would have the endpoint prefix of :
http://localhost/axis2/web_services.
Note: don't forget the / at the begining.
If you wish, you can also change the location as well by adding a string value with the name axis2_location
. This is also optional and defaults to /axis2.
If you have /myserser as the value you can access your web services with a url like http://localhost/myserver/services.
Note: Don't forget the / at the beginning.
Now you can do all the registry editing using the JScript file
axis2_iis_regedit.js provided with the distribution. When you build WSF/CPP with the IIS module the file is copied to the root directory of
the binary distribution. Just double click it and everything will be
set to the defaults. The axis2c_home is taken as the current directory,
so make sure you run the file in the WSF/CPP repository location (or
root of the binary distribution). If you want to change the values you
can manually edit the the .js file or give it as command line arguments
to the script when running the script. To run the jscript from the
command line use the command :\cscript axis2_iis_regedit.js optional arguments
. We recomend the manual editing as it is the easiest way to specify the values.
IIS 5.1 or Below
Using the IIS management console, add a new virtual directory to your IIS/PWS web site. The name of the virtual directory must beaxis2
. Its
physical path should be the directory in which you placed
mod_axis2_IIS.dll (in our example it is c:\wso2-wsf-cpp-bin-x.y.z-win32\lib).
When creating this new virtual directory, assign
execute access to it.
By using the IIS management console, add mod_axis2_IIS.dll as a filter in your IIS/PWS web site and restart the IIS admin service.
IIS 6 & 7
Using the IIS management console, add the mod_axis2_IIS.dll as a Wildcard Script Map.Please don't add the mod_axis2_IIS.dll as a filter to IIS as in the IIS 5.1 case.
Note: If the WSF/CPP failed to load, verify that Axis2/C and its dependent DLLs are in the System Path (not the user path).
When using a proxy, there are two methods for specifying proxy settings:
When using proxy authentication, there are three methods for specifying proxy authentication settings:
<transportSender name="http" class="axis2_http_sender">
<parameter name="PROTOCOL" locked="false">HTTP/1.1</parameter>
<parameter name="PROXY" proxy_host="<IP_ADDRESS>" proxy_port="8080" proxy_username="" proxy_password="" locked="true"/>
</transportSender>
You can specify proxy authentication settings using the following function with the ServiceClient:
bool ServiceClient::setProxyWithAuth(std::string proxyHost, std::string proxyPort, std::string username, std::string password);
You can specify proxy authentication settings using the following function with the Options object.
bool Options::setProxyAuthInfo(std::string username, std::string password, std::string authType);
In auth_type
, use Basic
to force Basic Authentication or Digest to force
Digest
Authentication. Leave this field NULL if you are not forcing
authentication.
You can also predetermine whether proxy authentication is required. This can be done by calling the function below: First enable the proxy authentication testing option on the Options instance.
bool ServiceClient::setTestProxyAuth(bool testProxyAuth);
SettestProxyAuth
totrue
to enable testing.When testing is enabled, the request will be sent without without adding authentication information. If it fails, and requests Authentication Information, the request type of authentication will be saved. This information can be obtained in the following manner:
bool ServiceClient::getAuthType();
This will return either Basic, Digest or NULL according to the type of authentiation requested. In addition to that, after each request made through the service client, you can check whether authentication was required.
bool ServiceClient::getProxyAuthRequired();
Please take a look at the echo_blocking_auth
sample for more information on how to use these methods to identify
proxy Authentication requirements.
When using HTTP authentication, there are two methods for specifying proxy authentication settings:
<transportSender name="http" class="axis2_http_sender">
<parameter name="PROTOCOL" locked="false">HTTP/1.1</parameter>
<parameter name="HTTP-Authentication" username="your username" password="your password" locked="true"/>
</transportSender>
You can specify HTTP authentication settings using the following function with an Options class instance:
bool Options::setHTTPAuthInfo(std::string username, std::string password, std::string authType);
In
authType
, use Basic
to force HTTP Basic Authentication or Digest to
force HTTP Digest
Authentication. Leave this field NULL if you are not forcing
authentication.
You can also predetermine whether HTTP authentication is required. This can be done by calling the function below:
bool Options::setTestHTTPAuth(bool testHTTPAuth);
Set testHTTPAuth
to true
to enable testing.When testing is enabled, the request will be sent
without without adding authentication information. If it fails, and
requests Authentication Information, the request type of authentication
will be saved. This information can be obtained in the following manner:
bool ServiceClient::getAuthType();
This will return either Basic, Digest or NULL according to the type of authentiation requested. In addition to that, after each request made through the service client, you can check whether authentication was required.
bool ServiceClient::getHTTPAuthRequired();
WSDL2CPP tool that comes with WSF/CPP based on Axis2/Java Codegeneration tool. This is a Java tool that can be used to generate C++ code that works with WSF/CPP API.
Once you have build the codegen tool and installed it, you will find it located in <WSFCPP_INSTALL_DIR>\bin\tools\wsdl2cpp directory. You can run the tool by going to the wsdl2cpp directory and running either wsdl2cpp.bat or wsdl2cpp.sh.
The tool can be run with the following parameters and generate the service skeleton and other required files with ADB (Axis Data Binding) support.
WSDL2CPP.sh -uri interoptestdoclitparameters.wsdl -ss -sd -d adb -u
To understand the meanings of the options used with the tool, please have a look at the Java tool documentation.
If you need an XML in/out programming model, you can just
ignore the data
binding support. To generate code with no data binding support, just
replace
-d adb -u
, that was used in a previous
command, with -d
none
.
WSDL2CPP.sh -uri interoptestdoclitparameters.wsdl -ss -sd -d none
Once the code is generated, you have to implement the business logic for the service. For this, locate the skeleton source file from the generated files. To identify the locations where you can place your business logic in line with the operations defined in the WSDL file that you used to generate code, look for the comment lines:
You can also go through the generated header files and understand the API in line with the WSDL file that you used to generate the code.
The WSDL2CPP code generator tool provides support for generating client stubs as well. You can generate the required stubs from a given WSDL with the other supporting files. Use following parameters to generate the Axis2/C client stub code with ADB support.
WSDL2CPP.sh -uri interoptestdoclitparameters.wsdl -d adb -u
In order to ignore the data binding support and use a raw XML in/out model, just use the following parameters.
WSDL2CPP.sh -uri interoptestdoclitparameters.wsdl -d none
Like in the case of service skeletons, you have to fill in the business logic as required in the client stubs as well. To do this, go through the header files generated and understand the API in line with the WSDL file that you used to generate the code.


About Me
I'm an aspiring Web Developer who is also interested in stepping towards computer technology and creation. For years I have worked building, coding and designing web pages, PCBs and cases as well as building functional computers. I'm looking forward to starting a career in web delopment.
SongStar
With a group, We created a program that would use APIs to search for videos across the web with a single click, using Javascript, Bulma and Jquery. Github Repository
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This is a site that using JavaScript and weather APIs can search and present current and future weather forecasts of any given location. Github Repository


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An extensive collection of teaching resources for KS4 English Writing, including letters, stories, autobiography, poetry persuasive writing.
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Creative Writing Organiser for KS3 and KS4 English. Resource Name Format Description KS; Sports and Free Time Activities: Sports (no verb) PowerPoint: Intro to sports with structure J'aime le/la/l'. 3: Sports intro.
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CREATING A CIRCUIT SCHEMATIC
To create a new circuit start from an empty window, run xschem and select New Schematic in the File menu. Suppose we want co create a NAND gate, with two inputs, A and B and one output, Z. Lets start placing the input and output schematic pins; use the Insert key and locate the devices/ipin.sym symbol. After placing it change its lab attribute to 'A'
Copy another instance of it and set its lab attribute to B. Next place an output pin devices/opin.sym and set its lab to Z. The result will be as follows:
Now we need to build the actual circuit. Since we plan to do it in CMOS technology we need nmos and pmos transistors. Place one nmos from devices/nmos4.sym and one pmos from devices/pmos4.sym By selecting them with the mouse, moving (m bindkey), copying ('c' bindkey) place 4 transistors in the following way (the upper ones are pmos4, the lower ones nmos4):
now draw wires to connect together the transistor to form a NAND gate; in the picture i have highlighted 2 electrical nodes by selecting one wire segment of each and pressing the 'k' bindkey.
Next we need to place the supply nodes , VCC and VSS. we decide to use global nodes. Global nodes in SPICE semantics are like global variables in C programs, they are available everywhere, we do not need to propagate global nodes with pins. We could equally well use regular pins , as used for the A and B inputs, I am just showing different design styles. Use the Insert key and place both devices/vdd.sym and devices/gnd.sym Since the default names are respectively VDD and GND use the edit property bindkey 'q' to change these to VCC and VSS.
we still need to connect the body terminals of the mos transistors. One possibility is to hookup the two upper pmos transistor terminals to VCC with wires, and the two bottom nmos terminals to VSS with wires, but just to show different design styles i am planning to use ''by name'' connection with labels. So place a wire label devices/lab_pin.sym and use 4 instances of it to name the 4 body terminals. Remember, while moving (select and press the 'm' key) you can flip/rotate using the R/F keys.
Finally we must connect the input and output port connectors, and to complete the gate schematic we decide to use W=8u for the pmos transistors. Select both the pmos devices and press the edit proprty 'q' key; modify from 5u (default) to 8u.
Now do a Save as operation, save it for example in mylib/nand2.sch.
To make the schematic nicer we also add the title component. This component is not netlisted but is
useful, it reports the modification date and the author. Place the devices/title.sym
component. The NAND gate is completed! (below picture also with grid, normally disabled in pictures
to make image sizes smaller).
Normally a cmos gate like the one used in this example is used as a building block (among many others) for bigger circuits, therefore we need to enclose the schematic view above in a symbol representation.
Automatic symbol creation
XSCHEM has the ability to automatically generate a symbol view given the schematic view. Just press the 'a' bindkey in the drawing area of the nand2 gate.
After pressing 'OK' a mylib/nand2.sym file is generated. try opening it (File->Open):
As you can see a symbolic view of the gate has been automatically created using the information in the schematic view (specifically, the input/output pins). Now, this graphic is not really looking like a nand gate, so we may wish to edit it to make it look better. Delete (by selecting and pressing the Delete key) all the green lines, keep the red pins, the pin labels and the @symname and @name texts, then draw a nand shape like in the following picture. To allow you to draw small segments you may need to reduce the snap factor (menu View->Half snap thresholf) remember to reset the snap factor to its default setting when done.
This completes the nand2 component. It is now ready to be placed in a schematic. Open a test schematic (for example mylib/test.sch (remember to save the nand2.sym you have just created), press the Insert key and locate the mylib/nand2.sym symbol. Then insert devices/lab_pin.sym components and place wires to connect some nodes to the newly instantiated nand2 component:
This is now a valid circuit. Let's test it by extracting the SPICE netlist. Enable the showing of netlist window (Options -> Show netlist win, or 'A' key). Now extract the netlist (Netlist button on the right side of the menu bar, or 'N' key). the SPICE netlist will be shown.
**.subckt test x1 OUTPUT_Z INPUT_A INPUT_B nand2 **** begin user architecture code **** end user architecture code **.ends * expanding symbol: mylib/nand2 # of pins=3 .subckt nand2 Z A B *.ipin A *.opin Z *.ipin B m1 Z A net1 VSS nmos w=5u l=0.18u m=1 m2 Z B VCC VCC pmos w=8u l=0.18u m=1 m3 Z A VCC VCC pmos w=8u l=0.18u m=1 m4 net1 B VSS VSS nmos w=5u l=0.18u m=1 **** begin user architecture code **** end user architecture code .ends .GLOBAL VCC .GLOBAL VSS .end
This is an example of a hierarchical circuit. The nand2 is a symbol view of another lower level schematic. We may place multiple times the nand2 symbol to create more complex circuits.
By selecting one of the nand2 gates and pressing the 'e' key or menu Edit -> Push schematic we can 'descend' into it and navigate through the various hierarchies. Pressing <ctrl>e returns back to the upper level.
This is the corresponding netlist:
**.subckt test x1 Q SET_BAR QBAR nand2 x2 QBAR CLEAR_BAR Q nand2 **** begin user architecture code **** end user architecture code **.ends * expanding symbol: mylib/nand2 # of pins=3 .subckt nand2 Z A B *.ipin A *.opin Z *.ipin B m1 Z A net1 VSS nmos w=5u l=0.18u m=1 m2 Z B VCC VCC pmos w=8u l=0.18u m=1 m3 Z A VCC VCC pmos w=8u l=0.18u m=1 m4 net1 B VSS VSS nmos w=5u l=0.18u m=1 **** begin user architecture code **** end user architecture code .ends .GLOBAL VCC .GLOBAL VSS .end
The advantage of using hierarchy in circuits is the same as using functions in programming languages; avoid drawing many repetitive blocks. Also the netlist file will be much smaller.
Automatic Component Wiring
When a new symbol is placed there is a function to connect its pins to auto-named nets: select the symbol, then Press the 'H' key or the Symbol->Attach pins to component instance menu entry.
The use prefix will prepend the shown prefix to the wire names to be attached to the component.
The default value for the prefix is the instance name followed by an underscore.
The use wire labels will use wire labels instead of pin labels. Wire labels have the text name field
offset vertically to allow a wire to pass through without crossing the wire name. in the picture below,
the first component is wired with use prefix selected and use wire labels not selected,
the second example with use prefix not selected and use wire labels selected. As you
can see in the second example you may draw wires without overstriking the labels.


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This is a work in progress - not all effects are implemented yet.
Original by Gasman. @westdotcodottt - matt.west.co.tt -<EMAIL_ADDRESS>- 22 May 2010
Forked and improved by
Billy Wenge-Murphy -
@BillyWM -
<EMAIL_ADDRESS>- April 2011.
Added local file loading (HTML5 File API), implemented more effects, fixes to playback