make a rapid prototyping for fcgi application using dbus to fetch network manager related settings

packages installed

sudo apt-get install -y libfcgi-dev spawn-fcgi

sudo apt-get install -y nginx curl

sudo apt-get install -y g++

sudo apt-get install -y libdbus-c++-dev libdbus-c++-bin

sudo apt-get install libboost-all-dev

uripp-1.0.0: git clone https://github.com/vinzenz/uripp.git ./autogen.sh && ./configure && make sudo make install

restcgi-1.0.1: Download from sourceforge ./configure && make sudo make install

sudo apt-get install libgtest-dev

sudo apt-get install cmake # install cmake

cd /usr/src/gtest && sudo cmake CMakeLists.txt

sudo make && sudo cp *.a /usr/lib

Generation

dbusxx-introspect --system /org/freedesktop/NetworkManager org.freedesktop.NetworkManager > ~/GitHub/fcgiLearnings/NetworkManagerIF.xml

dbusxx-xml2cpp NetworkManagerIF.xml –proxy=NetworkProxy.h

Building

g++ -std=c++11 Application.cpp -lfcgi -lfcgi++ -ldbus-c++-1 -luripp -lrestcgi -o fcgiapp -I /usr/include/dbus-c++-1 -I cereal/include

Test and Run

sudo cp nginx.conf /usr/share/nginx/

[Kill the port owner by 'sudo fuser -k 80/tcp' if error occurs in 'sudo nginx -c nginx.conf'] sudo fuser -k 80/tcp

sudo nginx -c nginx.conf

export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/lib

spawn-fcgi -p 8000 -n fcgiapp

open browser and key-in http://localhost

• Google Test

cd tests && cmake CMakeList.txt && make

./runTests

References

http://www.tutorialspoint.com/cplusplus/cpp_web_programming.htm

http://www.drdobbs.com/web-development/restful-web-services-a-tutorial/240169069?pgno=1

Imp note wrt. REST

The key difference between PUT and POST is that PUT is idempotent while POST is not. No matter how many times you send a PUT request, the results will be same. POST is not an idempotent method. Making a POST multiple times may result in multiple resources getting created on the server.