版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/sz76211822/article/details/82839263
#include <event2/listener.h>
#include <event2/bufferevent.h>
#include <event2/buffer.h>
#include <arpa/inet.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
static void echo_read_cb(struct bufferevent *bev, void *ctx)
{
char cData[8192] = {0};
size_t n = bufferevent_read(bev, cData, sizeof(cData));
if(n){
printf("%s\n", cData);
}
}
static void echo_event_cb(struct bufferevent *bev, short events, void *ctx)
{
if (events & BEV_EVENT_ERROR){
perror("Error from bufferevent");
}
if (events & (BEV_EVENT_EOF | BEV_EVENT_ERROR)) {
bufferevent_free(bev);
}
}
static void accept_conn_cb(struct evconnlistener *listener, evutil_socket_t fd, struct sockaddr *address, int socklen, void *ctx)
{
/* We got a new connection! Set up a bufferevent for it. */
struct event_base *base = evconnlistener_get_base(listener);
struct bufferevent *bev = bufferevent_socket_new(base, fd, BEV_OPT_CLOSE_ON_FREE);
bufferevent_setcb(bev, echo_read_cb, NULL, echo_event_cb, NULL);
bufferevent_enable(bev, EV_READ | EV_WRITE);
}
static void accept_error_cb(struct evconnlistener *listener, void *ctx)
{
struct event_base *base = evconnlistener_get_base(listener);
int err = EVUTIL_SOCKET_ERROR();
fprintf(stderr, "Got an error %d (%s) on the listener. Shutting down.\n", err, evutil_socket_error_to_string(err));
event_base_loopexit(base, NULL);
}
int main(int argc, char **argv)
{
struct event_base *base;
struct evconnlistener *listener;
struct sockaddr_in sin;
int port = 8080;
if (port <= 0 || port > 65535) {
puts("Invalid port");
return 1;
}
base = event_base_new();
if (!base) {
puts("Couldn’t open event base");
return 1;
}
/* Clear the sockaddr before using it, in case there are extra
* platform-specific fields that can mess us up. */
memset(&sin, 0, sizeof(sin));
/* This is an INET address */
sin.sin_family = AF_INET;
/* Listen on 0.0.0.0 */
sin.sin_addr.s_addr = INADDR_ANY;
/* Listen on the given port. */
sin.sin_port = htons(port);
listener = evconnlistener_new_bind(base, accept_conn_cb, NULL, LEV_OPT_CLOSE_ON_FREE | LEV_OPT_REUSEABLE, -1, (struct sockaddr*)&sin, sizeof(sin));
if (!listener) {
perror("Couldn’t create listener");
return 1;
}
evconnlistener_set_error_cb(listener, accept_error_cb);
event_base_dispatch(base);
return 0;
}编译说明：g++ test.c -o ./test -levent -levent_core -levent_extra -levent_pthreads