Casper C++ SDK

Casper C++ SDK provides an interface to establish a connection between the Casper Blockchain and a client.

Dependencies

1. CMake Version 3.0.0 or newer
2. Doxygen Version 1.8.8 or newer
3. OpenSSL Version 1.1.1 or newer
4. cryptopp Version 8.6.0 or newer

Install Instructions for Dependencies

sudo apt update
sudo apt install build-essential cmake libssl-dev graphviz doxygen ninja-build libspdlog-dev

Install Spdlog

git clone https://github.com/gabime/spdlog.git
cd spdlog && mkdir build && cd build
cmake -DCMAKE_CXX_FLAGS=-fPIC .. && make -j && sudo make install

or via package manager:

sudo dnf install spdlog-devel

Install instructions for doxygen for CentOS

On CentOS and Rocky Linux:

sudo dnf config-manager --set-enabled powertools
sudo dnf install doxygen

Install instructions for vcpkg

Can be used for Windows, Linux and MacOS (fix your paths in the examples)

Prepare vcpkg:

git clone https://github.com/microsoft/vcpkg.git
cd vcpkg
git checkout 2022.08.15
./bootstrap-vcpkg.sh
sudo apt-get install pkg-config

Install necessary libraries for Fedora 35:

sudo dnf update && sudo dnf upgrade
sudo reboot
sudo dnf install kernel-headers kernel-devel autoconf-archive mesa-libGLU-devel R 'xcb-util-*-devel' libxkbcommon-x11-devel libxkbcommon-devel 
sudo yum install perl-IPC-Cmd 

Build deps:

windows:
vcpkg install @mydir\casper-cpp-sdk\vcpkg\vcpkg.txt --triplet=x64-windows --clean-after-build

linux:
./vcpkg install boost-algorithm boost-property-tree boost-variant cryptopp openssl spdlog --triplet=x64-linux --clean-after-build

macos:
./vcpkg install @mydir/casper-cpp-sdk/vcpkg/vcpkg.txt --triplet=x64-osx --clean-after-build

Export deps:

windows:  
vcpkg export @mydir\casper-cpp-sdk\vcpkg\vcpkg.txt --raw --triplet=x64-windows  --output-dir=mydir\vcpkg-bin-win-casper-cpp-sdk --output=01  

linux:  
./vcpkg export boost-algorithm boost-property-tree boost-variant cryptopp openssl spdlog --raw --triplet=x64-linux --output-dir=mydir/vcpkg-bin-lin-casper-cpp-sdk --output=01
./vcpkg export @mydir/casper-cpp-sdk/vcpkg/vcpkg.txt --raw --triplet=x64-linux --output-dir=mydir/vcpkg-bin-lin-casper-cpp-sdk --output=01
    or an alternative way if above doesn't work:    
./vcpkg export <list of packages from vcpkg.txt seperated by space> --raw --triplet=x64-linux --output-dir=/mydir/vcpkg-bin-lin-casper-cpp-sdk --output=01

macos:
./vcpkg export @mydir/casper-cpp-sdk/vcpkg/vcpkg.txt --raw --triplet=x64-osx --output-dir=mydir/vcpkg-bin-mac-casper-cpp-sdk --output=01

Building

Debug

Using deps from system (linux only, need to install additional dependencies)

mkdir build && cd build
cmake -GNinja -DCMAKE_BUILD_TYPE=Debug ..
ninja

Using deps from vcpkg (Linux, Windows, macOS)(Suggested)

mkdir build && cd build

windows:
cmake -GNinja -DCMAKE_BUILD_TYPE=Debug -DCMAKE_TOOLCHAIN_FILE=mydir/vcpkg-bin-win-casper-cpp-sdk/01/scripts/buildsystems/vcpkg.cmake -DVCPKG_TARGET_TRIPLET=x64-windows ..

linux:
cmake -GNinja -DCMAKE_BUILD_TYPE=Debug -DCMAKE_TOOLCHAIN_FILE=mydir/vcpkg-bin-lin-casper-cpp-sdk/01/scripts/buildsystems/vcpkg.cmake -DVCPKG_TARGET_TRIPLET=x64-linux ..

macos:
cmake -GNinja -DCMAKE_BUILD_TYPE=Debug -DCMAKE_TOOLCHAIN_FILE=mydir/vcpkg-bin-mac-casper-cpp-sdk/01/scripts/buildsystems/vcpkg.cmake -DVCPKG_TARGET_TRIPLET=x64-osx ..

cmake --build .

Release

Using deps from system (linux only)

mkdir build && cd build
cmake -GNinja -DCMAKE_BUILD_TYPE=Release ..
ninja

Test

Using deps from system (linux only)

mkdir build && cd build
cmake -GNinja -DCMAKE_BUILD_TYPE=Debug -DCASPER_SDK_TESTS=ON ..
ninja
./test/casper_cpp_sdk_tests

Run Examples

mkdir build && cd build
cmake -GNinja -DCMAKE_BUILD_TYPE=Debug -DCASPER_SDK_EXAMPLES=ON ..
ninja
./examples/example

Install

mkdir build && cd build
cmake -GNinja -DCMAKE_BUILD_TYPE=Release ..
ninja
sudo ninja install

---

How to integrate Casper C++ SDK into your project

1. Include the header file to the application file.
    #include "CasperClient.h"
2. Link the installed SDK to the application. A CMake example is given below.
    add_executable(ApplicationName main.cpp)
    target_link_libraries(ApplicationName PUBLIC CasperSDK)

How to use the Casper C++ SDK

Usage of the RPC functions are described in the examples/HelloSDK.cpp file.

1. Define a CasperClient object and connect to the Casper Blockchain. Replace the IP address and port number to the IP address and port number of any Casper Blockchain node.
    Casper::Client client("http://127.0.0.1:7777");

2. Call the client object member functions listed with their return types below to perform RPC functions.

Client Function	Return Type
GetNodePeers	Casper::InfoGetPeersResult
GetStateRootHash	Casper::GetStateRootHashResult
GetDeployInfo	Casper::GetDeployInfoResult
GetStatusInfo	Casper::GetStatusResult
GetBlockTransfers	Casper::GetBlockTransfersResult
GetBlock	Casper::GetBlockResult
GetEraInfoBySwitchBlock	Casper::GetEraInfoResult
GetItem	Casper::GetItemResult
GetDictionaryItem	Casper::GetDictionaryItemResult
GetAccountBalance	Casper::GetBalanceResult
GetAuctionInfo	Casper::GetAuctionInfoResult
PutDeploy	Casper::PutDeployResult

Documentation

cd docs
doxygen Doxyfile

The documentation will be available in the "docs/html/index.html" file.

External Libraries

1. https://github.com/nlohmann/json
2. https://github.com/jsonrpcx/json-rpc-cxx
3. https://github.com/yhirose/cpp-httplib
4. https://github.com/weidai11/cryptopp
5. https://github.com/Neargye/magic_enum
6. https://github.com/codeinred/recursive-variant
7. https://github.com/ckormanyos/wide-integer
8. https://github.com/mity/acutest

Projects Built on Casper C++ SDK

1. https://matterfi.com