Description
A C++ asynchronous programming engine that combines computing and networking.
C++ Workflow alternatives and similar libraries
Based on the "Networking" category.
Alternatively, view C++ Workflow alternatives based on common mentions on social networks and blogs.
-
libcurl
A command line tool and library for transferring data with URL syntax, supporting DICT, FILE, FTP, FTPS, GOPHER, GOPHERS, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, MQTT, POP3, POP3S, RTMP, RTMPS, RTSP, SCP, SFTP, SMB, SMBS, SMTP, SMTPS, TELNET, TFTP, WS and WSS. libcurl offers a myriad of powerful features -
POCO
The POCO C++ Libraries are powerful cross-platform C++ libraries for building network- and internet-based applications that run on desktop, server, mobile, IoT, and embedded systems. -
C++ REST SDK
The C++ REST SDK is a Microsoft project for cloud-based client-server communication in native code using a modern asynchronous C++ API design. This project aims to help C++ developers connect to and interact with services. -
RakNet
DISCONTINUED. RakNet is a cross platform, open source, C++ networking engine for game programmers. -
evpp
A modern C++ network library for developing high performance network services in TCP/UDP/HTTP protocols. -
Simple-Web-Server
DISCONTINUED. A very simple, fast, multithreaded, platform independent HTTP and HTTPS server and client library implemented using C++11 and Boost.Asio. Created to be an easy way to make REST resources available from C++ applications. -
wdt
DISCONTINUED. Warp speed Data Transfer (WDT) is an embeddedable library (and command line tool) aiming to transfer data between 2 systems as fast as possible over multiple TCP paths. -
PcapPlusPlus
PcapPlusPlus is a multiplatform C++ library for capturing, parsing and crafting of network packets. It is designed to be efficient, powerful and easy to use. It provides C++ wrappers for the most popular packet processing engines such as libpcap, Npcap, WinPcap, DPDK, AF_XDP and PF_RING. -
cpp-netlib
The C++ Network Library Project -- cross-platform, standards compliant networking library. -
Restbed
Corvusoft's Restbed framework brings asynchronous RESTful functionality to C++14 applications. -
Silicon
A high performance, middleware oriented C++14 http web framework please use matt-42/lithium instead -
Simple-WebSocket-Server
DISCONTINUED. A very simple, fast, multithreaded, platform independent WebSocket (WS) and WebSocket Secure (WSS) server and client library implemented using C++11, Boost.Asio and OpenSSL. Created to be an easy way to make WebSocket endpoints in C++. -
RESTinio
Cross-platform, efficient, customizable, and robust asynchronous HTTP(S)/WebSocket server C++ library with the right balance between performance and ease of use -
nope.c
WAFer is a C language-based software platform for scalable server-side and networking applications. Think node.js for C programmers. -
IXWebSocket
websocket and http client and server library, with TLS support and very few dependencies -
mailio
mailio is a cross platform C++ library for MIME format and SMTP, POP3, IMAP protocols. It is based on the standard C++ 17 and Boost library. -
QuantumGate
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NetIF
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SaaSHub - Software Alternatives and Reviews
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README
[简体中文版(推荐)](README_cn.md)
Sogou C++ Workflow
As Sogou`s C++ server engine, Sogou C++ Workflow supports almost all back-end C++ online services of Sogou, including all search services, cloud input method, online advertisements, etc., handling more than 10 billion requests every day. This is an enterprise-level programming engine in light and elegant design which can satisfy most C++ back-end development requirements.
You can use it:
- To quickly build an HTTP server:
#include <stdio.h>
#include "workflow/WFHttpServer.h"
int main()
{
WFHttpServer server([](WFHttpTask *task) {
task->get_resp()->append_output_body("<html>Hello World!</html>");
});
if (server.start(8888) == 0) { // start server on port 8888
getchar(); // press "Enter" to end.
server.stop();
}
return 0;
}
- As a multifunctional asynchronous client, it currently supports
HTTP
,Redis
,MySQL
andKafka
protocols. - To implement client/server on user-defined protocol and build your own RPC system.
- srpc is based on it and it is an independent open source project, which supports srpc, brpc, trpc and thrift protocols.
- To build asynchronous workflow; support common series and parallel structures, and also support any DAG structures.
- As a parallel computing tool. In addition to networking tasks, Sogou C++ Workflow also includes the scheduling of computing tasks. All types of tasks can be put into the same flow.
- As an asynchronous file IO tool in
Linux
system, with high performance exceeding any system call. Disk file IO is also a task. - To realize any high-performance and high-concurrency back-end service with a very complex relationship between computing and networking.
- To build a micro service system.
- This project has built-in service governance and load balancing features.
- Wiki link : PaaS Architecture
Compiling and running environment
- This project supports
Linux
,macOS
,Windows
,Android
and other operating systems.Windows
version is currently released as an independent branch, usingiocp
to implement asynchronous networking. All user interfaces are consistent with theLinux
version.
- Supports all CPU platforms, including 32 or 64-bit
x86
processors, big-endian or little-endianarm
processors,loongson
processors. - Master branch requires SSL and
OpenSSL 1.1
or above is recommended. Fully compatible with BoringSSL. If you don't like SSL, you may checkout the nossl branch. But still need to linkcrypto
formd5
andsha1
. - Uses the
C++11
standard and therefore, it should be compiled with a compiler which supportsC++11
. Does not rely onboost
orasio
. - No other dependencies. However, if you need
Kafka
protocol, some compression libraries should be installed, includinglz4
,zstd
andsnappy
.
Get started (Linux, macOS):
git clone https://github.com/sogou/workflow
cd workflow
make
cd tutorial
make
Get started (Debian Linux, ubuntu 22.04):
Sogou C++ Workflow has been packaged for Debian Linux and ubuntu 22.04.
To install the Workflow library for development purposes:
sudo apt-get install libworkflow-dev
To install the Workflow library for deployment:
sudo apt-get install libworkflow1
Tutorials
- Client
- [Creating your first task:wget](docs/en/tutorial-01-wget.md)
- [Implementing Redis set and get:redis_cli](docs/en/tutorial-02-redis_cli.md)
- [More features about series:wget_to_redis](docs/en/tutorial-03-wget_to_redis.md)
- Server
- [First server:http_echo_server](docs/en/tutorial-04-http_echo_server.md)
- [Asynchronous server:http_proxy](docs/en/tutorial-05-http_proxy.md)
- Parallel tasks and Series
- [A simple parallel wget:parallel_wget](docs/en/tutorial-06-parallel_wget.md)
- Important topics
- [About error](docs/en/about-error.md)
- [About timeout](docs/en/about-timeout.md)
- [About global configuration](docs/en/about-config.md)
- [About DNS](docs/en/about-dns.md)
- [About exit](docs/en/about-exit.md)
- Computing tasks
- [Using the build-in algorithm factory:sort_task](docs/en/tutorial-07-sort_task.md)
- [User-defined computing task:matrix_multiply](docs/en/tutorial-08-matrix_multiply.md)
- [Use computing task in a simple way: go task](docs/en/about-go-task.md)
- Asynchronous File IO tasks
- [Http server with file IO:http_file_server](docs/en/tutorial-09-http_file_server.md)
- User-defined protocol
- [A simple user-defined protocol: client/server](docs/en/tutorial-10-user_defined_protocol.md)
- Timing tasks and counting tasks
- [About timer](docs/en/about-timer.md)
- [About counter](docs/en/about-counter.md)
- [About resource pool](docs/en/about-resource-pool.md)
- [About module](docs/en/about-module.md)
- Service governance
- [About service governance](docs/en/about-service-governance.md)
- [More documents about upstream](docs/en/about-upstream.md)
- Connection context
- [About connection context](docs/en/about-connection-context.md)
- Built-in clients
- [Asynchronous MySQL client:mysql_cli](docs/en/tutorial-12-mysql_cli.md)
- [Asynchronous Kafka client: kafka_cli](docs/en/tutorial-13-kafka_cli.md)
Programming paradigm
We believe that a typical back-end program=protocol+algorithm+workflow and should be developed completely independently.
- Protocol
- In most cases, users use built-in common network protocols, such as HTTP, Redis or various rpc.
- Users can also easily customize user-defined network protocol. In the customization, they only need to provide serialization and deserialization functions to define their own client/server.
- Algorithm
- In our design, the algorithm is a concept symmetrical to the protocol.
- If protocol call is rpc, then algorithm call is an apc (Async Procedure Call).
- We have provided some general algorithms, such as sort, merge, psort, reduce, which can be used directly.
- Compared with a user-defined protocol, a user-defined algorithm is much more common. Any complicated computation with clear boundaries should be packaged into an algorithm.
- Workflow
- Workflow is the actual business logic, which is to put the protocols and algorithms into the flow graph for use.
- The typical workflow is a closed series-parallel graph. Complex business logic may be a non-closed DAG.
- The workflow graph can be constructed directly or dynamically generated based on the results of each step. All tasks are executed asynchronously.
Basic task, task factory and complex task
- Our system contains six basic tasks: networking, file IO, CPU, GPU, timer, and counter.
- All tasks are generated by the task factory and automatically recycled after callback.
- Server task is one kind of special networking task, generated by the framework which calls the task factory, and handed over to the user through the process function.
- In most cases, the task generated by the user through the task factory is a complex task, which is transparent to the user.
- For example, an HTTP request may include many asynchronous processes (DNS, redirection), but for user, it is just a networking task.
- File sorting seems to be an algorithm, but it actually includes many complex interaction processes between file IO and CPU computation.
- If you think of business logic as building circuits with well-designed electronic components, then each electronic component may be a complex circuit.
Asynchrony and encapsulation based on C++11 std::function
- Not based on user mode coroutines. Users need to know that they are writing asynchronous programs.
- All calls are executed asynchronously, and there is almost no operation that occupies a thread.
- Although we also provide some facilities with semi-synchronous interfaces, they are not core features.
- We try to avoid user's derivations, and encapsulate user behavior with
std::function
instead, including:- The callback of any task.
- Any server's process. This conforms to the
FaaS
(Function as a Service) idea. - The realization of an algorithm is simply a
std::function
. But the algorithm can also be implemented by derivation.
Memory reclamation mechanism
- Every task will be automatically reclaimed after the callback. If a task is created but a user does not want to run it, the user needs to release it through the dismiss method.
- Any data in the task, such as the response of the network request, will also be recycled with the task. At this time, the user can use
std::move()
to move the required data. - SeriesWork and ParallelWork are two kinds of framework objects, which are also recycled after their callback.
- When a series is a branch of a parallel, it will be recycled after the callback of the parallel that it belongs to.
- This project doesn’t use
std::shared_ptr
to manage memory.
Any other questions?
You may check the FAQ and issues list first to see if you can find the answer.
You are very welcome to send the problems you encounter in use to issues, and we will answer them as soon as possible. At the same time, more issues will also help new users.
*Note that all licence references and agreements mentioned in the C++ Workflow README section above
are relevant to that project's source code only.