#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <strings.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <errno.h>
#include <assert.h>
#include "ff_config.h"
#include "ff_api.h"
#define MAX_EVENTS 512
/* kevent set */
struct kevent kevSet;
/* events */
struct kevent events[MAX_EVENTS];
/* kq */
int kq;
int sockfd;
char html[] =
"HTTP/1.1 200 OK\r\n"
"Server: F-Stack\r\n"
"Date: Sat, 25 Feb 2017 09:26:33 GMT\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 439\r\n"
"Last-Modified: Tue, 21 Feb 2017 09:44:03 GMT\r\n"
"Connection: keep-alive\r\n"
"Accept-Ranges: bytes\r\n"
"\r\n"
"<!DOCTYPE html>\r\n"
"<html>\r\n"
"<head>\r\n"
"<title>Welcome to F-Stack!</title>\r\n"
"<style>\r\n"
" body { \r\n"
" width: 35em;\r\n"
" margin: 0 auto; \r\n"
" font-family: Tahoma, Verdana, Arial, sans-serif;\r\n"
" }\r\n"
"</style>\r\n"
"</head>\r\n"
"<body>\r\n"
"<h1>Welcome to F-Stack!</h1>\r\n"
"\r\n"
"<p>For online documentation and support please refer to\r\n"
"<a href=\"http://F-Stack.org/\">F-Stack.org</a>.<br/>\r\n"
"\r\n"
"<p><em>Thank you for using F-Stack.</em></p>\r\n"
"</body>\r\n"
"</html>";
int loop(void *arg)
{
/* Wait for events to happen */
unsigned nevents = ff_kevent(kq, NULL, 0, events, MAX_EVENTS, NULL);
unsigned i;
for (i = 0; i < nevents; ++i) {
struct kevent event = events[i];
int clientfd = (int)event.ident;
/* Handle disconnect */
if (event.flags & EV_EOF) {
/* Simply close socket */
ff_close(clientfd);
//printf("A client has left the server...,fd:%d\n", clientfd);
} else if (clientfd == sockfd) {
int nclientfd = ff_accept(sockfd, NULL, NULL);
assert(nclientfd > 0);
/* Add to event list */
kevSet.data = 0;
kevSet.fflags = 0;
kevSet.filter = EVFILT_READ;
kevSet.flags = EV_ADD;
kevSet.ident = nclientfd;
kevSet.udata = NULL;
assert(ff_kevent(kq, &kevSet, 1, NULL, 0, NULL) == 0);
//printf("A new client connected to the server..., fd:%d\n", nclientfd);
} else if (event.filter == EVFILT_READ) {
char buf[256];
size_t readlen = ff_read(clientfd, buf, sizeof(buf));
//printf("bytes %zu are available to read...,fd:%d\n", (size_t)event.data, clientfd);
ff_write(clientfd, html, sizeof(html));
} else {
printf("unknown event: %8.8X\n", event.flags);
}
}
}
int main(int argc, char * argv[])
{
ff_init(argc, argv);
sockfd = ff_socket(AF_INET, SOCK_STREAM, 0);
printf("sockfd:%d\n", sockfd);
if (sockfd < 0)
printf("ff_socket failed\n");
struct sockaddr_in my_addr;
bzero(&my_addr, sizeof(my_addr));
my_addr.sin_family = AF_INET;
my_addr.sin_port = htons(80);
my_addr.sin_addr.s_addr = htonl(INADDR_ANY);
int ret = ff_bind(sockfd, (struct linux_sockaddr *)&my_addr, sizeof(my_addr));
if (ret < 0) {
printf("ff_bind failed\n");
}
ret = ff_listen(sockfd, MAX_EVENTS);
if (ret < 0) {
printf("ff_listen failed\n");
}
kevSet.data = MAX_EVENTS;
kevSet.fflags = 0;
kevSet.filter = EVFILT_READ;
kevSet.flags = EV_ADD;
kevSet.ident = sockfd;
kevSet.udata = NULL;
assert((kq = ff_kqueue()) > 0);
/* Update kqueue */
ff_kevent(kq, &kevSet, 1, NULL, 0, NULL);
ff_run(loop, NULL);
return 0;
}