• <ins id="pjuwb"></ins>
    <blockquote id="pjuwb"><pre id="pjuwb"></pre></blockquote>
    <noscript id="pjuwb"></noscript>
          <sup id="pjuwb"><pre id="pjuwb"></pre></sup>
            <dd id="pjuwb"></dd>
            <abbr id="pjuwb"></abbr>

            牽著老婆滿街逛

            嚴(yán)以律己,寬以待人. 三思而后行.
            GMail/GTalk: yanglinbo#google.com;
            MSN/Email: tx7do#yahoo.com.cn;
            QQ: 3 0 3 3 9 6 9 2 0 .

            New libevent: dns and http support

            from:http://unx.ca/log/2006/10/17/new-libevent-dns-and-http-support/

            Last night Niels Provos announced the release of libevent 1.2. It comes with 2 new and useful features:

            • Non-blocking DNS resolution: previously you had to write your own, hunt down someone elses or uses threads to prevent DNS lookups from blocking your app. This came just at the right time for me as I was about to integrate someone elses non-blocking solution into my app.
            • Support for simple HTTP clients and servers: At first thought this may seem like unneeded bloat, and to many it might. I usually work on applications that lack a user interface and sometimes a simple http interface is very useful for debugging, or quickly adding some extra control to your application. This might even been robust enough to add a basic webservices like API to your application.

            Non-blocking DNS example:

            #include <sys/types.h>
            #include <sys/time.h>
            /* For inet_ntoa. */
            #include <sys/socket.h>
            #include <netinet/in.h>
            #include <arpa/inet.h>
            #include <stdlib.h>
            #include <stdio.h>
            #include <stdint.h>
            #include <event.h>
            #include <evdns.h>
            void
            usage(void)
            {
            fprintf(stderr, “USAGE: evdns-demo <hostname>n”);
            exit(1);
            }
            void
            evdns_cb(int result, char type, int count, int ttl, void *addresses, void *arg)
            {
            struct in_addr *addrs = addresses;
            int i;
            if (result != 0) {
            printf(“Error looking up address.n”);
            exit(1);
            }
            else {
            for (i = 0; i < count; i++) {
            printf(“%sn”, inet_ntoa(addrs[i]));
            }
            exit(0);
            }
            }
            int
            main(int argc, char **argv)
            {
            if (argc != 2)
            usage();
            event_init();
            evdns_init();
            evdns_resolve_ipv4(argv[1], 0, evdns_cb, NULL);
            event_dispatch();
            return (0);
            }
            

            http server example

            #include <sys/types.h>
            #include <sys/time.h>
            #include <stdlib.h>
            #include <err.h>
            #include <event.h>
            #include <evhttp.h>
            void
            root_handler(struct evhttp_request *req, void *arg)
            {
            struct evbuffer *buf;
            buf = evbuffer_new();
            if (buf == NULL)
            err(1, “failed to create response buffer”);
            evbuffer_add_printf(buf, “Hello World!n”);
            evhttp_send_reply(req, HTTP_OK, “OK”, buf);
            }
            void
            generic_handler(struct evhttp_request *req, void *arg)
            {
            struct evbuffer *buf;
            buf = evbuffer_new();
            if (buf == NULL)
            err(1, “failed to create response buffer”);
            evbuffer_add_printf(buf, “Requested: %sn”, evhttp_request_uri(req));
            evhttp_send_reply(req, HTTP_OK, “OK”, buf);
            }
            int
            main(int argc, char **argv)
            {
            struct evhttp *httpd;
            event_init();
            httpd = evhttp_start(“0.0.0.0″, 8080);
            /* Set a callback for requests to “/”. */
            evhttp_set_cb(httpd, “/”, root_handler, NULL);
            /* Set a callback for all other requests. */
            evhttp_set_gencb(httpd, generic_handler, NULL);
            event_dispatch();
            /* Not reached in this code as it is now. */
            evhttp_free(httpd);
            return 0;
            }
            

            posted on 2007-08-21 01:27 楊粼波 閱讀(618) 評論(0)  編輯 收藏 引用


            只有注冊用戶登錄后才能發(fā)表評論。
            網(wǎng)站導(dǎo)航: 博客園   IT新聞   BlogJava   博問   Chat2DB   管理


            精品无码久久久久久国产| 久久精品国产一区| 99久久99久久精品国产| 久久久久高潮毛片免费全部播放 | 久久伊人精品青青草原高清| 国产成人无码精品久久久性色| 国产精品综合久久第一页| 日本三级久久网| 97精品伊人久久久大香线蕉| 国内精品免费久久影院| 国产精品内射久久久久欢欢| 99久久精品国产一区二区蜜芽| 久久久精品午夜免费不卡| 国产A级毛片久久久精品毛片| 99久久精品国产一区二区三区 | 亚洲AV无码久久| 热re99久久6国产精品免费| 久久久久亚洲Av无码专| 久久久久高潮毛片免费全部播放| 久久91精品国产91久久麻豆| 香蕉久久一区二区不卡无毒影院 | 色综合久久久久久久久五月| 久久国产热精品波多野结衣AV| 国产精品99久久久久久人| 色综合色天天久久婷婷基地| 久久综合亚洲色HEZYO国产| 中文字幕热久久久久久久| 国产高潮国产高潮久久久| 久久99精品久久久久久齐齐| 合区精品久久久中文字幕一区| 日日噜噜夜夜狠狠久久丁香五月| 国产欧美一区二区久久| 久久97久久97精品免视看| 色综合久久无码五十路人妻| 91秦先生久久久久久久| 国内精品久久久久影院薰衣草| 久久久久久a亚洲欧洲aⅴ| 久久国内免费视频| 久久久久久狠狠丁香| 一本一本久久aa综合精品 | 国产精品激情综合久久|