windows 上安装 libevent

作者：阿凡卢

出处：http://www.cnblogs.com/luxiaoxun/

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Libevent官网：http://libevent.org/

windows 7下编译：

编译环境： windows 7 + VS2010

（1）解压libevent到F:\libevent\libevent-2.0.21-stable

（2）打开Microsoft visual studio 2010命令行工具

（3）修改以下三个文件，添加宏定义：

在以下3个文件开头添加“#define _WIN32_WINNT 0x0500”

libevent-2.0.21-stable\event_iocp.c

libevent-2.0.21-stable\evthread_win32.c

libevent-2.0.21-stable\listener.c

（4）使用VS命令提示工具编译：

cd/d F:\libevent\libevent-2.0.21-stable

nmake /f Makefile.nmake

（5）编译结果：

libevent_core.lib：All core event and buffer functionality. This library contains all the event_base, evbuffer, bufferevent, and utility functions.

libevent_extras.lib：This library defines protocol-specific functionality that you may or may not want for your application, including HTTP, DNS, and RPC.

libevent.lib：This library exists for historical reasons; it contains the contents of both libevent_core and libevent_extra. You shouldn’t use it; it may Go away
in a future version of Libevent.

（6）VS2010下使用lib

新建一个VC++控制台项目：

环境配置：

项目下建一个Lib目录，将上面三个lib文件copy到该目录下。

新建一个Include目录，将F:\libevent\libevent-2.0.21-stable\include下的文件和文件夹copy到该目录下，F:\libevent\libevent-2.0.21-stable\WIN32-Code下的文件copy到该目录下，2个event2目录下的文件可合并一起。

main代码：

// LibeventTest.cpp : 定义控制台应用程序的入口点。
//

#include "stdafx.h"

#include <string.h>
#include <errno.h>
#include <stdio.h>
#include <signal.h>

#ifndef WIN32
#include <netinet/in.h>
# ifdef _XOPEN_SOURCE_EXTENDED
#  include <arpa/inet.h>
# endif
#include <sys/socket.h>
#endif

#include "event2/bufferevent.h"
#include "event2/buffer.h"
#include "event2/listener.h"
#include "event2/util.h"
#include "event2/event.h"

#include <WinSock2.h>

static const char MESSAGE[] = "Hello, World!\n";

static const int PORT = 9995;

static void conn_writecb(struct bufferevent *bev, void *user_data)
{
struct evbuffer *output = bufferevent_get_output(bev);
if (evbuffer_get_length(output) == 0)
{
printf("flushed answer\n");
bufferevent_free(bev);
}
}

static void conn_eventcb(struct bufferevent *bev, short events, void *user_data)
{
if (events & BEV_EVENT_EOF)
{
printf("Connection closed.\n");
}
else if (events & BEV_EVENT_ERROR)
{
printf("Got an error on the connection: %s\n",
strerror(errno));/*XXX win32*/
}
/* None of the other events can happen here, since we haven't enabled
* timeouts */
bufferevent_free(bev);
}

static void signal_cb(evutil_socket_t sig, short events, void *user_data)
{
struct event_base *base = (struct event_base *)user_data;
struct timeval delay = { 2, 0 };

printf("Caught an interrupt signal; exiting cleanly in two seconds.\n");

event_base_loopexit(base, &delay);
}

static void listener_cb(struct evconnlistener *listener, evutil_socket_t fd,
struct sockaddr *sa, int socklen, void *user_data)
{
struct event_base *base = (struct event_base *)user_data;
struct bufferevent *bev;

bev = bufferevent_socket_new(base, fd, BEV_OPT_CLOSE_ON_FREE);
if (!bev)
{
fprintf(stderr, "Error constructing bufferevent!");
event_base_loopbreak(base);
return;
}
bufferevent_setcb(bev, NULL, conn_writecb, conn_eventcb, NULL);
bufferevent_enable(bev, EV_WRITE);
bufferevent_disable(bev, EV_READ);

bufferevent_write(bev, MESSAGE, strlen(MESSAGE));
}

int main(int argc, char **argv)
{
struct event_base *base;
struct evconnlistener *listener;
struct event *signal_event;

struct sockaddr_in sin;

#ifdef WIN32
WSADATA wsa_data;
WSAStartup(0x0201, &wsa_data);
#endif

base = event_base_new();
if (!base)
{
fprintf(stderr, "Could not initialize libevent!\n");
return 1;
}

memset(&sin, 0, sizeof(sin));
sin.sin_family = AF_INET;
sin.sin_port = htons(PORT);

listener = evconnlistener_new_bind(base, listener_cb, (void *)base,
LEV_OPT_REUSEABLE|LEV_OPT_CLOSE_ON_FREE, -1,
(struct sockaddr*)&sin,
sizeof(sin));

if (!listener)
{
fprintf(stderr, "Could not create a listener!\n");
return 1;
}

signal_event = evsignal_new(base, SIGINT, signal_cb, (void *)base);

if (!signal_event || event_add(signal_event, NULL)<0)
{
fprintf(stderr, "Could not create/add a signal event!\n");
return 1;
}

event_base_dispatch(base);

evconnlistener_free(listener);
event_free(signal_event);
event_base_free(base);

printf("done\n");
return 0;
}

项目属性设置：

VC++目录：

包含目录，添加：F:\Projects\LibeventTest\LibeventTest\Include;

库目录，添加：F:\Projects\LibeventTest\LibeventTest\Lib;

C/C++：

代码生成-->运行库：多线程调试 (/MTd)（Debug下），多线程 (/MT)（Release下）

连接器：

输入：ws2_32.lib;wsock32.lib;libevent.lib;libevent_core.lib;libevent_extras.lib;

ws2_32.lib;wsock32.lib;是用来编译Windows网络相关的程序库。

编译，生成！

编译好的libevent lib下载 Libevent2.0.21.rar