flash的socket安全策略机制默认端口为843,需要服务器在这个端口响应请求并返回信息；代码如下：

#include

#include

#include

#include

#include

void accept_cb(int fd, short events, void* arg);

void socket_read_cb(int fd, short events, void *arg);

int tcp_server_init(int port, int listen_num);

int main(int argc, char** argv)

{

int listener = tcp_server_init(843, 10);

if( listener == -1 )

{

perror(" tcp_server_init error ");

return -1;

}

struct event_base* base = event_base_new();

//添加监听客户端请求连接事件

struct event* ev_listen = event_new(base, listener, EV_READ | EV_PERSIST, accept_cb, base);

event_add(ev_listen, NULL);

event_base_dispatch(base);

return 0;

}

void accept_cb(int fd, short events, void* arg)

{

evutil_socket_t sockfd;

struct sockaddr_in client;

socklen_t len;

sockfd = accept(fd, (struct sockaddr*)&client, &len );

evutil_make_socket_nonblocking(sockfd);

printf("accept a client %d\n", sockfd);

struct event_base* base = (struct event_base*)arg;

//仅仅是为了动态创建一个event结构体

struct event *ev = event_new(NULL, -1, 0, NULL, NULL);

//将动态创建的结构体作为event的回调参数

event_assign(ev, base, sockfd, EV_READ | EV_PERSIST, socket_read_cb, (void*)ev);

event_add(ev, NULL);

}

void socket_read_cb(int fd, short events, void *arg)

{

char msg[4096];

struct event *ev = (struct event*)arg;

int len = read(fd, msg, sizeof(msg) - 1);

msg[len] = '\0';

char *reply_msg = "<?xml version=\"1.0\"?>";

if(strcmp(msg, "") == 0){

printf("recv the client msg: %s\r\n", msg);

printf("%s\r\n", reply_msg);

write(fd, reply_msg, strlen(reply_msg) );

close(event_get_fd(ev));

event_free(ev);

return ;

}

if( len <= 0 )

{

printf("some error happen when read\n");

close(event_get_fd(ev));

event_free(ev);

return ;

}

}

typedef struct sockaddr SA;

int tcp_server_init(int port, int listen_num)

{

int errno_save;

evutil_socket_t listener;

listener = socket(AF_INET, SOCK_STREAM, 0);

if( listener == -1 )

return -1;

//允许多次绑定同一个地址。要用在socket和bind之间

evutil_make_listen_socket_reuseable(listener);

struct sockaddr_in sin;

sin.sin_family = AF_INET;

sin.sin_addr.s_addr = 0;

sin.sin_port = htons(port);

if(bind(listener, (SA*)&sin, sizeof(sin)) < 0 )

goto error;

if(listen(listener, listen_num) < 0)

goto error;

//跨平台统一接口，将套接字设置为非阻塞状态

evutil_make_socket_nonblocking(listener);

return listener;

error:

errno_save = errno;

evutil_closesocket(listener);

errno = errno_save;

return -1;

}

2.编译后执行就ok!

gcc -Wall  -I/usr/local/include event.c -L/usr/local/lib -levent