libeventソースコード(Windows)のコンパイル

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学習ノートは、今回の成功を記録するだけで、libeventソースコードをコンパイルします.環境はMinGW+VSL 2008+Msysである.
0.libeventライブラリをダウンロードする
  http://libevent.org/stable安定版のライブラリをダウンロードします.
1.コンパイル
最初はMinGWでコンパイルしましたが、いつも問題があります.このブログを参考にしました.http://m.blog.csdn.net/blog/bojie5744/39698599 を選択して、vsの運行環境を含めてコンパイルします.
call「C:\Program Files\Microsoft Visual Studio 9.0\VC\vcvarsall.bat」
./configureメークmake install;
installでなくてもいいです.libeventヘッダファイルはincludeの中にあります.生成したライブラリは.libsの中にあります.vsの運行環境を使っています.したがって、libeventソースコードのコンパイル後のライブラリの拡張子は、以前のaファイルではなく、libとなります.libeventt.libを複製するlibevent_core.liblibevent_extra.lib;(最後に私がコンパイルしたファイルを提供します.vsコンパイル環境のない人にダウンロードして使用してもいいです.)将来のために、includeディレクトリのファイルを開発環境のincludeにコピーしてもいいです.libsの中の3つのファイルをmingwのlibフォルダにコピーしてもいいです.
2.libeventテストコード
1 #include <winsock2.h>
2 #include <event2/event.h>
3 #include <event2/event_struct.h> 
4 
5 int main(int argc, char **argv)
6 {
7     event timeout;
8     return (0);
9 }
コンパイルオプションは
g++test.cpp-Iinclude-L.-levent-lws 2_32
テストのコンパイルはやはり不合格です.libevent.libファイル名をevent.libに変更すれば通過できます.具体的にはなぜまだ分かりません.なぜMS系のlibライブラリとmingwのaライブラリファイルに違いがあるのかは、Windowsの下ではmingwの高級バージョンと区別されておらず、どちらも呼び出し可能です.
3.libeventが持参するhttpサーバーのソースコード(sampleのhttp-server.c)

  1 /*
  2   A trivial static http webserver using Libevent's evhttp.
  3 
  4   This is not the best code in the world, and it does some fairly stupid stuff
  5   that you would never want to do in a production webserver. Caveat hackor!
  6 
  7  */
  8 
  9 /* Compatibility for possible missing IPv6 declarations */
 10 #include "../util-internal.h"
 11 
 12 #include <stdio.h>
 13 #include <stdlib.h>
 14 #include <string.h>
 15 
 16 #include <sys/types.h>
 17 #include <sys/stat.h>
 18 
 19 #ifdef _WIN32
 20 #include <winsock2.h>
 21 #include <ws2tcpip.h>
 22 #include <windows.h>
 23 #include <io.h>
 24 #include <fcntl.h>
 25 #ifndef S_ISDIR
 26 #define S_ISDIR(x) (((x) & S_IFMT) == S_IFDIR)
 27 #endif
 28 #else
 29 #include <sys/stat.h>
 30 #include <sys/socket.h>
 31 #include <signal.h>
 32 #include <fcntl.h>
 33 #include <unistd.h>
 34 #include <dirent.h>
 35 #endif
 36 
 37 #include <event2/event.h>
 38 #include <event2/http.h>
 39 #include <event2/buffer.h>
 40 #include <event2/util.h>
 41 #include <event2/keyvalq_struct.h>
 42 
 43 #ifdef EVENT__HAVE_NETINET_IN_H
 44 #include <netinet/in.h>
 45 # ifdef _XOPEN_SOURCE_EXTENDED
 46 #  include <arpa/inet.h>
 47 # endif
 48 #endif
 49 
 50 #ifdef _WIN32
 51 #ifndef stat
 52 #define stat _stat
 53 #endif
 54 #ifndef fstat
 55 #define fstat _fstat
 56 #endif
 57 #ifndef open
 58 #define open _open
 59 #endif
 60 #ifndef close
 61 #define close _close
 62 #endif
 63 #ifndef O_RDONLY
 64 #define O_RDONLY _O_RDONLY
 65 #endif
 66 #endif
 67 
 68 char uri_root[512];
 69 
 70 static const struct table_entry {
 71     const char *extension;
 72     const char *content_type;
 73 } content_type_table[] = {
 74     { "txt", "text/plain" },
 75     { "c", "text/plain" },
 76     { "h", "text/plain" },
 77     { "html", "text/html" },
 78     { "htm", "text/htm" },
 79     { "css", "text/css" },
 80     { "gif", "image/gif" },
 81     { "jpg", "image/jpeg" },
 82     { "jpeg", "image/jpeg" },
 83     { "png", "image/png" },
 84     { "pdf", "application/pdf" },
 85     { "ps", "application/postsript" },
 86     { NULL, NULL },
 87 };
 88 
 89 /* Try to guess a good content-type for 'path' */
 90 static const char *
 91 guess_content_type(const char *path)
 92 {
 93     const char *last_period, *extension;
 94     const struct table_entry *ent;
 95     last_period = strrchr(path, '.');
 96     if (!last_period || strchr(last_period, '/'))
 97         goto not_found; /* no exension */
 98     extension = last_period + 1;
 99     for (ent = &content_type_table[0]; ent->extension; ++ent) {
100         if (!evutil_ascii_strcasecmp(ent->extension, extension))
101             return ent->content_type;
102     }
103 
104 not_found:
105     return "application/misc";
106 }
107 
108 /* Callback used for the /dump URI, and for every non-GET request:
109  * dumps all information to stdout and gives back a trivial 200 ok */
110 static void
111 dump_request_cb(struct evhttp_request *req, void *arg)
112 {
113     const char *cmdtype;
114     struct evkeyvalq *headers;
115     struct evkeyval *header;
116     struct evbuffer *buf;
117 
118     switch (evhttp_request_get_command(req)) {
119     case EVHTTP_REQ_GET: cmdtype = "GET"; break;
120     case EVHTTP_REQ_POST: cmdtype = "POST"; break;
121     case EVHTTP_REQ_HEAD: cmdtype = "HEAD"; break;
122     case EVHTTP_REQ_PUT: cmdtype = "PUT"; break;
123     case EVHTTP_REQ_DELETE: cmdtype = "DELETE"; break;
124     case EVHTTP_REQ_OPTIONS: cmdtype = "OPTIONS"; break;
125     case EVHTTP_REQ_TRACE: cmdtype = "TRACE"; break;
126     case EVHTTP_REQ_CONNECT: cmdtype = "CONNECT"; break;
127     case EVHTTP_REQ_PATCH: cmdtype = "PATCH"; break;
128     default: cmdtype = "unknown"; break;
129     }
130 
131     printf("Received a %s request for %s
Headers:
", 132 cmdtype, evhttp_request_get_uri(req)); 133 134 headers = evhttp_request_get_input_headers(req); 135 for (header = headers->tqh_first; header; 136 header = header->next.tqe_next) { 137 printf(" %s: %s
", header->key, header->value); 138 } 139 140 buf = evhttp_request_get_input_buffer(req); 141 puts("Input data: <<<"); 142 while (evbuffer_get_length(buf)) { 143 int n; 144 char cbuf[128]; 145 n = evbuffer_remove(buf, cbuf, sizeof(cbuf)); 146 if (n > 0) 147 (void) fwrite(cbuf, 1, n, stdout); 148 } 149 puts(">>>"); 150 151 evhttp_send_reply(req, 200, "OK", NULL); 152 } 153 154 /* This callback gets invoked when we get any http request that doesn't match 155 * any other callback. Like any evhttp server callback, it has a simple job: 156 * it must eventually call evhttp_send_error() or evhttp_send_reply(). 157 */ 158 static void 159 send_document_cb(struct evhttp_request *req, void *arg) 160 { 161 struct evbuffer *evb = NULL; 162 const char *docroot = arg; 163 const char *uri = evhttp_request_get_uri(req); 164 struct evhttp_uri *decoded = NULL; 165 const char *path; 166 char *decoded_path; 167 char *whole_path = NULL; 168 size_t len; 169 int fd = -1; 170 struct stat st; 171 172 if (evhttp_request_get_command(req) != EVHTTP_REQ_GET) { 173 dump_request_cb(req, arg); 174 return; 175 } 176 177 printf("Got a GET request for <%s>
", uri); 178 179 /* Decode the URI */ 180 decoded = evhttp_uri_parse(uri); 181 if (!decoded) { 182 printf("It's not a good URI. Sending BADREQUEST
"); 183 evhttp_send_error(req, HTTP_BADREQUEST, 0); 184 return; 185 } 186 187 /* Let's see what path the user asked for. */ 188 path = evhttp_uri_get_path(decoded); 189 if (!path) path = "/"; 190 191 /* We need to decode it, to see what path the user really wanted. */ 192 decoded_path = evhttp_uridecode(path, 0, NULL); 193 if (decoded_path == NULL) 194 goto err; 195 /* Don't allow any ".."s in the path, to avoid exposing stuff outside 196 * of the docroot. This test is both overzealous and underzealous: 197 * it forbids aceptable paths like "/this/one..here", but it doesn't 198 * do anything to prevent symlink following." */ 199 if (strstr(decoded_path, "..")) 200 goto err; 201 202 len = strlen(decoded_path)+strlen(docroot)+2; 203 if (!(whole_path = malloc(len))) { 204 perror("malloc"); 205 goto err; 206 } 207 evutil_snprintf(whole_path, len, "%s/%s", docroot, decoded_path); 208 209 if (stat(whole_path, &st)<0) { 210 goto err; 211 } 212 213 /* This holds the content we're sending. */ 214 evb = evbuffer_new(); 215 216 if (S_ISDIR(st.st_mode)) { 217 /* If it's a directory, read the comments and make a little 218 * index page */ 219 #ifdef _WIN32 220 HANDLE d; 221 WIN32_FIND_DATAA ent; 222 char *pattern; 223 size_t dirlen; 224 #else 225 DIR *d; 226 struct dirent *ent; 227 #endif 228 const char *trailing_slash = ""; 229 230 if (!strlen(path) || path[strlen(path)-1] != '/') 231 trailing_slash = "/"; 232 233 #ifdef _WIN32 234 dirlen = strlen(whole_path); 235 pattern = malloc(dirlen+3); 236 memcpy(pattern, whole_path, dirlen); 237 pattern[dirlen] = '\\'; 238 pattern[dirlen+1] = '*'; 239 pattern[dirlen+2] = '\0'; 240 d = FindFirstFileA(pattern, &ent); 241 free(pattern); 242 if (d == INVALID_HANDLE_VALUE) 243 goto err; 244 #else 245 if (!(d = opendir(whole_path))) 246 goto err; 247 #endif 248 249 evbuffer_add_printf(evb, 250 "<!DOCTYPE html>
" 251 "<html>
<head>
" 252 " <meta charset='utf-8'>
" 253 " <title>%s</title>
" 254 " <base href='%s%s'>
" 255 " </head>
" 256 " <body>
" 257 " <h1>%s</h1>
" 258 " <ul>
", 259 decoded_path, /* XXX html-escape this. */ 260 path, /* XXX html-escape this? */ 261 trailing_slash, 262 decoded_path /* XXX html-escape this */); 263 #ifdef _WIN32 264 do { 265 const char *name = ent.cFileName; 266 #else 267 while ((ent = readdir(d))) { 268 const char *name = ent->d_name; 269 #endif 270 evbuffer_add_printf(evb, 271 " <li><a href=\"%s\">%s</a>
", 272 name, name);/* XXX escape this */ 273 #ifdef _WIN32 274 } while (FindNextFileA(d, &ent)); 275 #else 276 } 277 #endif 278 evbuffer_add_printf(evb, "</ul></body></html>
"); 279 #ifdef _WIN32 280 FindClose(d); 281 #else 282 closedir(d); 283 #endif 284 evhttp_add_header(evhttp_request_get_output_headers(req), 285 "Content-Type", "text/html"); 286 } else { 287 /* Otherwise it's a file; add it to the buffer to get 288 * sent via sendfile */ 289 const char *type = guess_content_type(decoded_path); 290 if ((fd = open(whole_path, O_RDONLY)) < 0) { 291 perror("open"); 292 goto err; 293 } 294 295 if (fstat(fd, &st)<0) { 296 /* Make sure the length still matches, now that we 297 * opened the file :/ */ 298 perror("fstat"); 299 goto err; 300 } 301 evhttp_add_header(evhttp_request_get_output_headers(req), 302 "Content-Type", type); 303 evbuffer_add_file(evb, fd, 0, st.st_size); 304 } 305 306 evhttp_send_reply(req, 200, "OK", evb); 307 goto done; 308 err: 309 evhttp_send_error(req, 404, "Document was not found"); 310 if (fd>=0) 311 close(fd); 312 done: 313 if (decoded) 314 evhttp_uri_free(decoded); 315 if (decoded_path) 316 free(decoded_path); 317 if (whole_path) 318 free(whole_path); 319 if (evb) 320 evbuffer_free(evb); 321 } 322 323 static void 324 syntax(void) 325 { 326 fprintf(stdout, "Syntax: http-server <docroot>
"); 327 } 328 329 int 330 main(int argc, char **argv) 331 { 332 struct event_base *base; 333 struct evhttp *http; 334 struct evhttp_bound_socket *handle; 335 336 unsigned short port = 0; 337 #ifdef _WIN32 338 WSADATA WSAData; 339 WSAStartup(0x101, &WSAData); 340 #else 341 if (signal(SIGPIPE, SIG_IGN) == SIG_ERR) 342 return (1); 343 #endif 344 if (argc < 2) { 345 syntax(); 346 return 1; 347 } 348 349 base = event_base_new(); 350 if (!base) { 351 fprintf(stderr, "Couldn't create an event_base: exiting
"); 352 return 1; 353 } 354 355 /* Create a new evhttp object to handle requests. */ 356 http = evhttp_new(base); 357 if (!http) { 358 fprintf(stderr, "couldn't create evhttp. Exiting.
"); 359 return 1; 360 } 361 362 /* The /dump URI will dump all requests to stdout and say 200 ok. */ 363 evhttp_set_cb(http, "/dump", dump_request_cb, NULL); 364 365 /* We want to accept arbitrary requests, so we need to set a "generic" 366 * cb. We can also add callbacks for specific paths. */ 367 evhttp_set_gencb(http, send_document_cb, argv[1]); 368 369 /* Now we tell the evhttp what port to listen on */ 370 handle = evhttp_bind_socket_with_handle(http, "0.0.0.0", port); 371 if (!handle) { 372 fprintf(stderr, "couldn't bind to port %d. Exiting.
", 373 (int)port); 374 return 1; 375 } 376 377 { 378 /* Extract and display the address we're listening on. */ 379 struct sockaddr_storage ss; 380 evutil_socket_t fd; 381 ev_socklen_t socklen = sizeof(ss); 382 char addrbuf[128]; 383 void *inaddr; 384 const char *addr; 385 int got_port = -1; 386 fd = evhttp_bound_socket_get_fd(handle); 387 memset(&ss, 0, sizeof(ss)); 388 if (getsockname(fd, (struct sockaddr *)&ss, &socklen)) { 389 perror("getsockname() failed"); 390 return 1; 391 } 392 if (ss.ss_family == AF_INET) { 393 got_port = ntohs(((struct sockaddr_in*)&ss)->sin_port); 394 inaddr = &((struct sockaddr_in*)&ss)->sin_addr; 395 } else if (ss.ss_family == AF_INET6) { 396 got_port = ntohs(((struct sockaddr_in6*)&ss)->sin6_port); 397 inaddr = &((struct sockaddr_in6*)&ss)->sin6_addr; 398 } else { 399 fprintf(stderr, "Weird address family %d
", 400 ss.ss_family); 401 return 1; 402 } 403 addr = evutil_inet_ntop(ss.ss_family, inaddr, addrbuf, 404 sizeof(addrbuf)); 405 if (addr) { 406 printf("Listening on %s:%d
", addr, got_port); 407 evutil_snprintf(uri_root, sizeof(uri_root), 408 "http://%s:%d",addr,got_port); 409 } else { 410 fprintf(stderr, "evutil_inet_ntop failed
"); 411 return 1; 412 } 413 } 414 415 event_base_dispatch(base); 416 417 return 0; 418 }
View Code
g++http-server.c-Iinclude-L.-levent-lws 2_32
编译libevent源代码(Windows)_第1张图片
これでサーバーとして使えます.
  
libeventコンパイル後のライブラリのダウンロード先: http://files.cnblogs.com/files/wunaozai/libevent.zip
この記事のアドレス: http://www.cnblogs.com/wunaozai/p/4550084.html