windows下libevent VS2012编译

死siua11

　　首先在http://libevent.org/上下载最先的libevent压缩包。
　　源文件有个问题，evutil.c源码修改这部分
　　#ifdef WIN32
#include <winsock2.h>
#include <ws2tcpip.h>
#pragma comment(lib,&quot;ws2_32.lib&quot;)
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#undef WIN32_LEAN_AND_MEAN
#include <io.h>
#include <tchar.h>
#endif

不然使用会失败；
　　打开VS2012开发工具命令行，cd 到libevent目录；
　　键入
　　nmake /f Makefile.nmake

完成编译，生成libevent_core.lib libevent_extras.lib libevent.lib。
　　新建VS工程，把lib加入链接器路径，libevent文件夹下的include文件夹拷贝过来，加入C&#43;&#43;文件路径，并把libevent文件夹下的WIN32-Code\event2\event-config.h拷贝到include文件夹下，这样就ok了。
　　运行sample的代码：
　　/*
This exmple program provides a trivial server program that listens for TCP
connections on port 9995.  When they arrive, it writes a short message to
each client connection, and closes each connection once it is flushed.
Where possible, it exits cleanly in response to a SIGINT (ctrl-c).
*/
#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>
static const char MESSAGE[] = &quot;Hello, World!\n&quot;;
static const int PORT = 9995;
static void listener_cb(struct evconnlistener *, evutil_socket_t,
struct sockaddr *, int socklen, void *);
static void conn_writecb(struct bufferevent *, void *);
static void conn_eventcb(struct bufferevent *, short, void *);
static void signal_cb(evutil_socket_t, short, void *);
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, &quot;Could not initialize libevent!\n&quot;);
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, &quot;Could not create a listener!\n&quot;);
return 1;
}
signal_event = evsignal_new(base, SIGINT, signal_cb, (void *)base);
if (!signal_event || event_add(signal_event, NULL)<0) {
fprintf(stderr, &quot;Could not create/add a signal event!\n&quot;);
return 1;
}
event_base_dispatch(base);
evconnlistener_free(listener);
event_free(signal_event);
event_base_free(base);
printf(&quot;done\n&quot;);
return 0;
}
static void
listener_cb(struct evconnlistener *listener, evutil_socket_t fd,
struct sockaddr *sa, int socklen, void *user_data)
{
struct event_base *base = (event_base *)user_data;
struct bufferevent *bev;
bev = bufferevent_socket_new(base, fd, BEV_OPT_CLOSE_ON_FREE);
if (!bev) {
fprintf(stderr, &quot;Error constructing bufferevent!&quot;);
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));
}
static void
conn_writecb(struct bufferevent *bev, void *user_data)
{
struct evbuffer *output = bufferevent_get_output(bev);
if (evbuffer_get_length(output) == 0) {
printf(&quot;flushed answer\n&quot;);
bufferevent_free(bev);
}
}
static void
conn_eventcb(struct bufferevent *bev, short events, void *user_data)
{
if (events & BEV_EVENT_EOF) {
printf(&quot;Connection closed.\n&quot;);
} else if (events & BEV_EVENT_ERROR) {
//printf(&quot;Got an error on the connection: %s\n&quot;, 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 = (event_base *)user_data;
struct timeval delay = { 2, 0 };
printf(&quot;Caught an interrupt signal; exiting cleanly in two seconds.\n&quot;);
event_base_loopexit(base, &delay);
}

ok，没问题！

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