cmhi
/
f-stack
mirror of https://github.com/F-Stack/f-stack.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
f-stack/example/main.c

176 lines
4.7 KiB
C
Raw Permalink Normal View History

init
2017-04-21 10:43:26 +00:00
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
Example: keep run when accept failed.
2017-11-21 03:42:09 +00:00
#include <string.h>
init
2017-04-21 10:43:26 +00:00
#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;
helloword sever demo support IPv6.
2019-08-08 14:03:57 +00:00
#ifdef INET6
int sockfd6;
#endif
init
2017-04-21 10:43:26 +00:00
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"
F-Stack's kni can work on DPDK 18.11 LTS now.
2019-03-14 09:17:58 +00:00
"Content-Length: 438\r\n"
init
2017-04-21 10:43:26 +00:00
"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);
helloword sever demo support IPv6.
2019-08-08 14:03:57 +00:00
#ifdef INET6
} else if (clientfd == sockfd || clientfd == sockfd6) {
#else
init
2017-04-21 10:43:26 +00:00
} else if (clientfd == sockfd) {
helloword sever demo support IPv6.
2019-08-08 14:03:57 +00:00
#endif
Example: fix listen queue overflow. According to the FreeBSD Manual Page: - When kevent() returns and if `flags` is EVFILT_READ, sockets which have previously been passed to listen() return when there is an incoming connection pending. `data` contains the size of the listen backlog. So if an EVFILT_READ event reaches and it is the listen socket, we must accept `event->data` times. And for `ff_epoll` interface, we should continue to accept until it fails. In the previous version, we only accept once when event reaches, it will cause listen queue overflow.
2017-12-21 14:45:10 +00:00
int available = (int)event.data;
do {
helloword sever demo support IPv6.
2019-08-08 14:03:57 +00:00
int nclientfd = ff_accept(clientfd, NULL, NULL);
Example: fix listen queue overflow. According to the FreeBSD Manual Page: - When kevent() returns and if `flags` is EVFILT_READ, sockets which have previously been passed to listen() return when there is an incoming connection pending. `data` contains the size of the listen backlog. So if an EVFILT_READ event reaches and it is the listen socket, we must accept `event->data` times. And for `ff_epoll` interface, we should continue to accept until it fails. In the previous version, we only accept once when event reaches, it will cause listen queue overflow.
2017-12-21 14:45:10 +00:00
if (nclientfd < 0) {
printf("ff_accept failed:%d, %s\n", errno,
strerror(errno));
break;
}
/* Add to event list */
EV_SET(&kevSet, nclientfd, EVFILT_READ, EV_ADD, 0, 0, NULL);
if(ff_kevent(kq, &kevSet, 1, NULL, 0, NULL) < 0) {
printf("ff_kevent error:%d, %s\n", errno,
strerror(errno));
return -1;
}
available--;
} while (available);
init
2017-04-21 10:43:26 +00:00
} else if (event.filter == EVFILT_READ) {
char buf[256];
size_t readlen = ff_read(clientfd, buf, sizeof(buf));
F-Stack's kni can work on DPDK 18.11 LTS now.
2019-03-14 09:17:58 +00:00
ff_write(clientfd, html, sizeof(html) - 1);
init
2017-04-21 10:43:26 +00:00
} else {
example: remove printf.
2017-05-10 09:20:41 +00:00
printf("unknown event: %8.8X\n", event.flags);
init
2017-04-21 10:43:26 +00:00
}
}
}
int main(int argc, char * argv[])
{
Simplify startup arguments and add ff_fdisused. Changes: 1.Simplify f-stack startup arguments:"--conf, --proc-type, --proc-id". 2.add a function `ff_fdisused` to check if fd is used in f-stack.
2017-08-08 14:36:49 +00:00
ff_init(argc, argv);
init
2017-04-21 10:43:26 +00:00
helloword sever demo support IPv6.
2019-08-08 14:03:57 +00:00
assert((kq = ff_kqueue()) > 0);
Fix `ff_fdused_range` not work.
2017-08-08 15:47:38 +00:00
sockfd = ff_socket(AF_INET, SOCK_STREAM, 0);
Example: exit when ff_api failed
2017-09-14 10:57:37 +00:00
if (sockfd < 0) {
helloword sever demo support IPv6.
2019-08-08 14:03:57 +00:00
printf("ff_socket failed, sockfd:%d, errno:%d, %s\n", sockfd, errno, strerror(errno));
Example: exit when ff_api failed
2017-09-14 10:57:37 +00:00
exit(1);
}
init
2017-04-21 10:43:26 +00:00
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) {
helloword sever demo support IPv6.
2019-08-08 14:03:57 +00:00
printf("ff_bind failed, sockfd:%d, errno:%d, %s\n", sockfd, errno, strerror(errno));
Example: exit when ff_api failed
2017-09-14 10:57:37 +00:00
exit(1);
init
2017-04-21 10:43:26 +00:00
}
helloword sever demo support IPv6.
2019-08-08 14:03:57 +00:00
ret = ff_listen(sockfd, MAX_EVENTS);
init
2017-04-21 10:43:26 +00:00
if (ret < 0) {
helloword sever demo support IPv6.
2019-08-08 14:03:57 +00:00
printf("ff_listen failed, sockfd:%d, errno:%d, %s\n", sockfd, errno, strerror(errno));
Example: exit when ff_api failed
2017-09-14 10:57:37 +00:00
exit(1);
init
2017-04-21 10:43:26 +00:00
}
Example: fix listen queue overflow. According to the FreeBSD Manual Page: - When kevent() returns and if `flags` is EVFILT_READ, sockets which have previously been passed to listen() return when there is an incoming connection pending. `data` contains the size of the listen backlog. So if an EVFILT_READ event reaches and it is the listen socket, we must accept `event->data` times. And for `ff_epoll` interface, we should continue to accept until it fails. In the previous version, we only accept once when event reaches, it will cause listen queue overflow.
2017-12-21 14:45:10 +00:00
EV_SET(&kevSet, sockfd, EVFILT_READ, EV_ADD, 0, MAX_EVENTS, NULL);
helloword sever demo support IPv6.
2019-08-08 14:03:57 +00:00
/* Update kqueue */
ff_kevent(kq, &kevSet, 1, NULL, 0, NULL);
init
2017-04-21 10:43:26 +00:00
helloword sever demo support IPv6.
2019-08-08 14:03:57 +00:00
#ifdef INET6
sockfd6 = ff_socket(AF_INET6, SOCK_STREAM, 0);
if (sockfd6 < 0) {
printf("ff_socket failed, sockfd6:%d, errno:%d, %s\n", sockfd6, errno, strerror(errno));
exit(1);
}
init
2017-04-21 10:43:26 +00:00
helloword sever demo support IPv6.
2019-08-08 14:03:57 +00:00
struct sockaddr_in6 my_addr6;
bzero(&my_addr6, sizeof(my_addr6));
my_addr6.sin6_family = AF_INET6;
my_addr6.sin6_port = htons(80);
my_addr6.sin6_addr = in6addr_any;
ret = ff_bind(sockfd6, (struct linux_sockaddr *)&my_addr6, sizeof(my_addr6));
if (ret < 0) {
printf("ff_bind failed, sockfd6:%d, errno:%d, %s\n", sockfd6, errno, strerror(errno));
exit(1);
}
ret = ff_listen(sockfd6, MAX_EVENTS);
if (ret < 0) {
printf("ff_listen failed, sockfd6:%d, errno:%d, %s\n", sockfd6, errno, strerror(errno));
exit(1);
}
EV_SET(&kevSet, sockfd6, EVFILT_READ, EV_ADD, 0, MAX_EVENTS, NULL);
init
2017-04-21 10:43:26 +00:00
ff_kevent(kq, &kevSet, 1, NULL, 0, NULL);
helloword sever demo support IPv6.
2019-08-08 14:03:57 +00:00
#endif
init
2017-04-21 10:43:26 +00:00
ff_run(loop, NULL);
return 0;
}