Libevhtp

依赖包版本

Libevent 版本 > 2.0

Openssl 版本 > 0.9.8k

Cmake 版本 > 2.8 (libevhtp使用cmake编译的)

系统yum源

这几个包在系统源中的版本都低于最低依赖版本

为了避免不破坏系统原有依赖

我们将新的包都安装到 /opt/local 一般来说这个目录都是空, 与/usr/local目录相对应

创建文件目录

sudo mkdir -p /opt/local

安装Openssl

cd /opt/local

wget "http://www.openssl.org/source/openssl-1.0.1e.tar.gz"

tar xzvf openssl-1.0.1e.tar.gz

cd openssl-1.0.1e

./config shared --prefix=/opt/local --openssldir=/opt/local/ssl

make

sudo make install

安装Libevent2.0

cd /opt/local

wget "https://github.com/downloads/libevent/libevent/libevent-2.0.21-stable.tar.gz"

tar xzvf libevent-2.0.21-stable.tar.gz

cd libevent-2.0.21-stable

./configure --prefix=/opt/local LDFLAGS=-L/opt/local/lib CPPFLAGS=-I/opt/local/include

make

sudo make install

安装Cmake

wget "http://www.cmake.org/files/v2.8/cmake-2.8.10.2.tar.gz"

tar xzvf cmake-2.8.10.2.tar.gz

cd cmake-2.8.10.2

./bootstrap --prefix=/opt/local

make

sudo make install

安装Libevhtp

wget "https://github.com/ellzey/libevhtp/archive/1.2.4.tar.gz" -O libevhtp-1.2.4.tar.gz

tar xzvf libevhtp-1.2.4.tar.gz

cd libevhtp-1.2.4

/opt/local/bin/cmake -DCMAKE_PREFIX_PATH=/opt/local -DCMAKE_INSTALL_PREFIX=/opt/local .

make

sudo make install

使用Libevhtp

#编译命令中加上

gcc libevhtpDemo.c -I/opt/local/include -L/opt/local/lib -Wl,-rpath /opt/local/lib -levent_openssl -levent -levhtp

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <stdint.h>

#include <errno.h>

 

#include <evhtp.h>

 

void

testcb(evhtp_request_t * req, void * a);

 

void

testcb(evhtp_request_t * req, void * a) {

  evbuffer_add_reference(req->buffer_out, "foobar", 6, NULL, NULL);

  evhtp_send_reply(req, EVHTP_RES_OK);

}

 

int main (int argc, const char * argv[])

{

  evbase_t *evbase = event_base_new();

  evhtp_t *htp = evhtp_new(evbase, NULL);

 

  evhtp_set_cb(htp, "/", testcb, NULL); /* 设置回调函数 */

  evhtp_use_threads(htp, NULL, 4, NULL); /* 设置4个线程 */

 

  /* 监听本地所有IP的8080端口, backlog为1024 */

  evhtp_bind_socket(htp, "0.0.0.0", 8080, 1024);

 

  /* 进入循环、监听连接，http server开始工作 */

  event_base_loop(evbase, 0);

 

  return 0;

}