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README.md

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libhv

Latest Version Build Status Platform

Like libevent, libev, and libuv, libhv provides event-loop with non-blocking IO and timer, but simpler api and richer protocols.

✨ Features

  • Cross-platform (Linux, Windows, Mac, Solaris)
  • EventLoop (IO, timer, idle)
  • TCP/UDP client/server/proxy
  • SSL/TLS support: WITH_OPENSSL or WITH_MBEDTLS
  • HTTP client/server (include https http1/x http2 grpc)
  • HTTP file service, indexof service, api service (support RESTful)
  • WebSocket client/server

⌛️ Build

see BUILD.md

Makefile:

./configure
make
sudo make install

or cmake:

mkdir build
cd build
cmake ..
cmake --build .

or vcpkg:

vcpkg install libhv

or xmake:

xrepo install libhv

⚡️ Getting Started

run ./getting_started.sh:

git clone https://github.com/ithewei/libhv.git
cd libhv
make

bin/httpd -h
bin/httpd -d
#bin/httpd -c etc/httpd.conf -s restart -d
ps aux | grep httpd

# http file service
bin/curl -v localhost:8080

# http indexof service
bin/curl -v localhost:8080/downloads/

# http api service
bin/curl -v localhost:8080/ping
bin/curl -v localhost:8080/echo -d "hello,world!"
bin/curl -v localhost:8080/query?page_no=1\&page_size=10
bin/curl -v localhost:8080/kv   -H "Content-Type:application/x-www-form-urlencoded" -d 'user=admin&pswd=123456'
bin/curl -v localhost:8080/json -H "Content-Type:application/json" -d '{"user":"admin","pswd":"123456"}'
bin/curl -v localhost:8080/form -F "user=admin pswd=123456"
bin/curl -v localhost:8080/upload -F "file=@LICENSE"

bin/curl -v localhost:8080/test -H "Content-Type:application/x-www-form-urlencoded" -d 'bool=1&int=123&float=3.14&string=hello'
bin/curl -v localhost:8080/test -H "Content-Type:application/json" -d '{"bool":true,"int":123,"float":3.14,"string":"hello"}'
bin/curl -v localhost:8080/test -F 'bool=1 int=123 float=3.14 string=hello'
# RESTful API: /group/:group_name/user/:user_id
bin/curl -v -X DELETE localhost:8080/group/test/user/123

HTTP

http server

see examples/http_server_test.cpp

#include "HttpServer.h"

int main() {
    HttpService router;
    router.GET("/ping", [](HttpRequest* req, HttpResponse* resp) {
        return resp->String("pong");
    });

    router.GET("/data", [](HttpRequest* req, HttpResponse* resp) {
        static char data[] = "0123456789";
        return resp->Data(data, 10);
    });

    router.GET("/paths", [&router](HttpRequest* req, HttpResponse* resp) {
        return resp->Json(router.Paths());
    });

    router.POST("/echo", [](HttpRequest* req, HttpResponse* resp) {
        resp->content_type = req->content_type;
        resp->body = req->body;
        return 200;
    });

    http_server_t server;
    server.port = 8080;
    server.service = &router;
    http_server_run(&server);
    return 0;
}

http client

see examples/http_client_test.cpp

#include "requests.h"

int main() {
    auto resp = requests::get("http://www.example.com");
    if (resp == NULL) {
        printf("request failed!\n");
    } else {
        printf("%d %s\r\n", resp->status_code, resp->status_message());
        printf("%s\n", resp->body.c_str());
    }

    resp = requests::post("127.0.0.1:8080/echo", "hello,world!");
    if (resp == NULL) {
        printf("request failed!\n");
    } else {
        printf("%d %s\r\n", resp->status_code, resp->status_message());
        printf("%s\n", resp->body.c_str());
    }

    return 0;
}

http benchmark

# webbench (linux only)
make webbench
bin/webbench -c 2 -t 10 http://127.0.0.1:8080/
bin/webbench -k -c 2 -t 10 http://127.0.0.1:8080/

# sudo apt install apache2-utils
ab -c 100 -n 100000 http://127.0.0.1:8080/

# sudo apt install wrk
wrk -c 100 -t 4 -d 10s http://127.0.0.1:8080/

libhv(port:8080) vs nginx(port:80) libhv-vs-nginx.png

🍭 Examples

c version

c++ version

🥇 Benchmark

cd echo-servers
./build.sh
./benchmark.sh

throughput:

libevent running on port 2001
libev running on port 2002
libuv running on port 2003
libhv running on port 2004
asio running on port 2005
poco running on port 2006

==============2001=====================================
[127.0.0.1:2001] 4 threads 1000 connections run 10s
total readcount=1616761 readbytes=1655563264
throughput = 157 MB/s

==============2002=====================================
[127.0.0.1:2002] 4 threads 1000 connections run 10s
total readcount=2153171 readbytes=2204847104
throughput = 210 MB/s

==============2003=====================================
[127.0.0.1:2003] 4 threads 1000 connections run 10s
total readcount=1599727 readbytes=1638120448
throughput = 156 MB/s

==============2004=====================================
[127.0.0.1:2004] 4 threads 1000 connections run 10s
total readcount=2202271 readbytes=2255125504
throughput = 215 MB/s

==============2005=====================================
[127.0.0.1:2005] 4 threads 1000 connections run 10s
total readcount=1354230 readbytes=1386731520
throughput = 132 MB/s

==============2006=====================================
[127.0.0.1:2006] 4 threads 1000 connections run 10s
total readcount=1699652 readbytes=1740443648
throughput = 165 MB/s

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