Crow VS Cutelyst

I'm investigating using C++ to build a REST server, and would love to know of people's experiences with Crow-- or whether they would recommend something else as a "medium-level" abstraction C++ web server. As background, I started off experimenting with Python/FastAPI, which is great, but there is too much friction to translate from pybind11-exported C++ objects to the format that FastAPI expects, and, of course, there are inherent performance limitations using Python, which could impact scaling up if the project were to be successful.

How about Crow?

https://github.com/CrowCpp/Crow is super easy to use

I recommend Crow, it's a web framework that supports HTTP and Websockets. It's a bit larger than being only there to just let you compose or decode a packet. But I'm pretty sure everything you mentioned is there already :)

It's also very useful to get to grips with using some popular libraries. Some might be ones that you'll find yourself using everywhere (e.g. fmt, spdlog, catch2), and some that have more specific usage, but are good to try out and explore what C++ can do in a ridiculously easy-to-use manner (e.g. crow, Dear ImGui). Make some toy projects that use some of these and you'll learn a lot.

I've been working on Crow for quite a while now, it's a pretty cool framework IMO.

You can also consider https://crowcpp.org/.

cmake_minimum_required (VERSION 3.11) project(crow_test LANGUAGES CXX VERSION 0.0.1 ) add_executable(crow_test) set_property(TARGET crow_test PROPERTY CXX_STANDARD 17) file(GLOB sources src/*.cpp src/*.h) target_sources(crow_test PRIVATE ${sources} ) find_package(Threads REQUIRED) # use static libs for all projects SET(BUILD_SHARED_LIBS OFF CACHE BOOL "Use static libs") # --- Fetch CROW -------------------------------------------------------------- include(FetchContent) set(FETCHCONTENT_UPDATES_DISCONNECTED TRUE) FetchContent_Declare(crow GIT_REPOSITORY https://github.com/CrowCpp/Crow GIT_TAG v1.0 ) FetchContent_GetProperties(crow) if(NOT crow_POPULATED) FetchContent_Populate(crow) add_subdirectory(${crow_SOURCE_DIR} ${crow_BINARY_DIR} EXCLUDE_FROM_ALL) endif() # ------------------------------------------------------------------------------ target_link_libraries(crow_test PRIVATE Crow::Crow ) install(TARGETS crow_test RUNTIME DESTINATION .) install(DIRECTORY static/ DESTINATION static) set(CPACK_INCLUDE_TOPLEVEL_DIRECTORY OFF) set(CPACK_OUTPUT_FILE_PREFIX "") set(CPACK_GENERATOR "ZIP" CACHE STRING "Zip Generator") include(CPack)

Today we released version 1.0, which aside from being the first non pre-release version, improves considerably on all parts of the framework. The changes include Blueprints (similar to python flask), a new HTTP Parser, CMake support, easily allowing multiple source files in downstream projects, C++20 support, and many more features and fixes. full changelog here.

> How would one go about building a rest service in C++?

I'd use https://github.com/drogonframework/drogon if the app needs to be pure C++ or Cutelyst (https://cutelyst.org/) if it's a Qt app which needs to expose an http server

I follow Restfull example from https://github.com/cutelyst/cutelyst/wiki/Creating-RESTful-Applications.

I need to expose, from an application in Qt 6 / C ++, several api for the management (play, pause. Duration ...) and receive video files. I looked at cutelist https://github.com/cutelyst/cutelyst/ but it doesn't convince me due to dependencies on too old projects. What do you suggest?

Thanks for reply... I'm on mac Catalina 10.15.7... and follow this tutorial : https://github.com/cutelyst/cutelyst/wiki/Tutorial_01_Intro, i just compiled from source uwsgi (that is dependence right?) and cutelyst-3.2.0, so i have cutelyst3-qt6.

could do both! https://cutelyst.org looks neat, and BrewTarget is written with Qt.

Cutelyst (revolves around Qt)

Nice to see another C++ web framework :D for those interested there is also Cutelyst (https://cutelyst.org/) but I never tried it