1 #include <stdio.h> 2 #include <stdlib.h> 3 #include <stdint.h> 4 #include <strings.h> 5 #include <sys/types.h> 6 #include <sys/socket.h> 7 #include <arpa/inet.h> 8 #include <errno.h> 9 #include <assert.h> 10 11 #include "ff_config.h" 12 #include "ff_api.h" 13 14 #define MAX_EVENTS 512 15 16 /* kevent set */ 17 struct kevent kevSet; 18 /* events */ 19 struct kevent events[MAX_EVENTS]; 20 /* kq */ 21 int kq; 22 int sockfd; 23 24 char html[] = 25 "HTTP/1.1 200 OK\r\n" 26 "Server: F-Stack\r\n" 27 "Date: Sat, 25 Feb 2017 09:26:33 GMT\r\n" 28 "Content-Type: text/html\r\n" 29 "Content-Length: 439\r\n" 30 "Last-Modified: Tue, 21 Feb 2017 09:44:03 GMT\r\n" 31 "Connection: keep-alive\r\n" 32 "Accept-Ranges: bytes\r\n" 33 "\r\n" 34 "<!DOCTYPE html>\r\n" 35 "<html>\r\n" 36 "<head>\r\n" 37 "<title>Welcome to F-Stack!</title>\r\n" 38 "<style>\r\n" 39 " body { \r\n" 40 " width: 35em;\r\n" 41 " margin: 0 auto; \r\n" 42 " font-family: Tahoma, Verdana, Arial, sans-serif;\r\n" 43 " }\r\n" 44 "</style>\r\n" 45 "</head>\r\n" 46 "<body>\r\n" 47 "<h1>Welcome to F-Stack!</h1>\r\n" 48 "\r\n" 49 "<p>For online documentation and support please refer to\r\n" 50 "<a href=\"http://F-Stack.org/\">F-Stack.org</a>.<br/>\r\n" 51 "\r\n" 52 "<p><em>Thank you for using F-Stack.</em></p>\r\n" 53 "</body>\r\n" 54 "</html>"; 55 56 int loop(void *arg) 57 { 58 /* Wait for events to happen */ 59 unsigned nevents = ff_kevent(kq, NULL, 0, events, MAX_EVENTS, NULL); 60 unsigned i; 61 62 for (i = 0; i < nevents; ++i) { 63 struct kevent event = events[i]; 64 int clientfd = (int)event.ident; 65 66 /* Handle disconnect */ 67 if (event.flags & EV_EOF) { 68 69 /* Simply close socket */ 70 ff_close(clientfd); 71 72 //printf("A client has left the server...,fd:%d\n", clientfd); 73 } else if (clientfd == sockfd) { 74 int nclientfd = ff_accept(sockfd, NULL, NULL); 75 76 assert(nclientfd > 0); 77 78 /* Add to event list */ 79 kevSet.data = 0; 80 kevSet.fflags = 0; 81 kevSet.filter = EVFILT_READ; 82 kevSet.flags = EV_ADD; 83 kevSet.ident = nclientfd; 84 kevSet.udata = NULL; 85 86 assert(ff_kevent(kq, &kevSet, 1, NULL, 0, NULL) == 0); 87 88 //printf("A new client connected to the server..., fd:%d\n", nclientfd); 89 90 } else if (event.filter == EVFILT_READ) { 91 char buf[256]; 92 size_t readlen = ff_read(clientfd, buf, sizeof(buf)); 93 94 //printf("bytes %zu are available to read...,fd:%d\n", (size_t)event.data, clientfd); 95 96 ff_write(clientfd, html, sizeof(html)); 97 98 } else { 99 printf("unknown event: %8.8X\n", event.flags); 100 } 101 } 102 } 103 104 int main(int argc, char * argv[]) 105 { 106 ff_init(argc, argv); 107 108 sockfd = ff_socket(AF_INET, SOCK_STREAM, 0); 109 printf("sockfd:%d\n", sockfd); 110 if (sockfd < 0) 111 printf("ff_socket failed\n"); 112 113 struct sockaddr_in my_addr; 114 bzero(&my_addr, sizeof(my_addr)); 115 my_addr.sin_family = AF_INET; 116 my_addr.sin_port = htons(80); 117 my_addr.sin_addr.s_addr = htonl(INADDR_ANY); 118 119 int ret = ff_bind(sockfd, (struct linux_sockaddr *)&my_addr, sizeof(my_addr)); 120 if (ret < 0) { 121 printf("ff_bind failed\n"); 122 } 123 124 ret = ff_listen(sockfd, MAX_EVENTS); 125 if (ret < 0) { 126 printf("ff_listen failed\n"); 127 } 128 129 kevSet.data = MAX_EVENTS; 130 kevSet.fflags = 0; 131 kevSet.filter = EVFILT_READ; 132 kevSet.flags = EV_ADD; 133 kevSet.ident = sockfd; 134 kevSet.udata = NULL; 135 136 assert((kq = ff_kqueue()) > 0); 137 138 /* Update kqueue */ 139 ff_kevent(kq, &kevSet, 1, NULL, 0, NULL); 140 141 ff_run(loop, NULL); 142 return 0; 143 } 144 145 146