1 #include <stdio.h> 2 #include <stdlib.h> 3 #include <stdint.h> 4 #include <string.h> 5 #include <strings.h> 6 #include <sys/types.h> 7 #include <sys/socket.h> 8 #include <arpa/inet.h> 9 #include <errno.h> 10 #include <assert.h> 11 12 #include "ff_config.h" 13 #include "ff_api.h" 14 15 #define MAX_EVENTS 512 16 17 /* kevent set */ 18 struct kevent kevSet; 19 /* events */ 20 struct kevent events[MAX_EVENTS]; 21 /* kq */ 22 int kq; 23 int sockfd; 24 25 char html[] = 26 "HTTP/1.1 200 OK\r\n" 27 "Server: F-Stack\r\n" 28 "Date: Sat, 25 Feb 2017 09:26:33 GMT\r\n" 29 "Content-Type: text/html\r\n" 30 "Content-Length: 438\r\n" 31 "Last-Modified: Tue, 21 Feb 2017 09:44:03 GMT\r\n" 32 "Connection: keep-alive\r\n" 33 "Accept-Ranges: bytes\r\n" 34 "\r\n" 35 "<!DOCTYPE html>\r\n" 36 "<html>\r\n" 37 "<head>\r\n" 38 "<title>Welcome to F-Stack!</title>\r\n" 39 "<style>\r\n" 40 " body { \r\n" 41 " width: 35em;\r\n" 42 " margin: 0 auto; \r\n" 43 " font-family: Tahoma, Verdana, Arial, sans-serif;\r\n" 44 " }\r\n" 45 "</style>\r\n" 46 "</head>\r\n" 47 "<body>\r\n" 48 "<h1>Welcome to F-Stack!</h1>\r\n" 49 "\r\n" 50 "<p>For online documentation and support please refer to\r\n" 51 "<a href=\"http://F-Stack.org/\">F-Stack.org</a>.<br/>\r\n" 52 "\r\n" 53 "<p><em>Thank you for using F-Stack.</em></p>\r\n" 54 "</body>\r\n" 55 "</html>"; 56 57 int loop(void *arg) 58 { 59 /* Wait for events to happen */ 60 unsigned nevents = ff_kevent(kq, NULL, 0, events, MAX_EVENTS, NULL); 61 unsigned i; 62 63 for (i = 0; i < nevents; ++i) { 64 struct kevent event = events[i]; 65 int clientfd = (int)event.ident; 66 67 /* Handle disconnect */ 68 if (event.flags & EV_EOF) { 69 /* Simply close socket */ 70 ff_close(clientfd); 71 } else if (clientfd == sockfd) { 72 int available = (int)event.data; 73 do { 74 int nclientfd = ff_accept(sockfd, NULL, NULL); 75 if (nclientfd < 0) { 76 printf("ff_accept failed:%d, %s\n", errno, 77 strerror(errno)); 78 break; 79 } 80 81 /* Add to event list */ 82 EV_SET(&kevSet, nclientfd, EVFILT_READ, EV_ADD, 0, 0, NULL); 83 84 if(ff_kevent(kq, &kevSet, 1, NULL, 0, NULL) < 0) { 85 printf("ff_kevent error:%d, %s\n", errno, 86 strerror(errno)); 87 return -1; 88 } 89 90 available--; 91 } while (available); 92 } else if (event.filter == EVFILT_READ) { 93 char buf[256]; 94 size_t readlen = ff_read(clientfd, buf, sizeof(buf)); 95 96 ff_write(clientfd, html, sizeof(html) - 1); 97 } else { 98 printf("unknown event: %8.8X\n", event.flags); 99 } 100 } 101 } 102 103 int main(int argc, char * argv[]) 104 { 105 ff_init(argc, argv); 106 107 sockfd = ff_socket(AF_INET, SOCK_STREAM, 0); 108 printf("sockfd:%d\n", sockfd); 109 if (sockfd < 0) { 110 printf("ff_socket failed\n"); 111 exit(1); 112 } 113 114 struct sockaddr_in my_addr; 115 bzero(&my_addr, sizeof(my_addr)); 116 my_addr.sin_family = AF_INET; 117 my_addr.sin_port = htons(80); 118 my_addr.sin_addr.s_addr = htonl(INADDR_ANY); 119 120 int ret = ff_bind(sockfd, (struct linux_sockaddr *)&my_addr, sizeof(my_addr)); 121 if (ret < 0) { 122 printf("ff_bind failed\n"); 123 exit(1); 124 } 125 126 ret = ff_listen(sockfd, MAX_EVENTS); 127 if (ret < 0) { 128 printf("ff_listen failed\n"); 129 exit(1); 130 } 131 132 EV_SET(&kevSet, sockfd, EVFILT_READ, EV_ADD, 0, MAX_EVENTS, NULL); 133 134 assert((kq = ff_kqueue()) > 0); 135 136 /* Update kqueue */ 137 ff_kevent(kq, &kevSet, 1, NULL, 0, NULL); 138 139 ff_run(loop, NULL); 140 return 0; 141 } 142