{"id":2665,"date":"2013-05-14T16:27:17","date_gmt":"2013-05-14T07:27:17","guid":{"rendered":"http:\/\/yasu2.prosou.nu\/blog\/index.php\/2013\/05\/14\/tcp\/"},"modified":"2013-05-14T16:27:17","modified_gmt":"2013-05-14T07:27:17","slug":"tcp","status":"publish","type":"post","link":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/2013\/05\/14\/2665\/","title":{"rendered":"TCP \u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3042\u308c\u3053\u308c"},"content":{"rendered":"

ICFPT Design Competition<\/a> \u306e\u59d4\u54e1\u3092\u3084\u3063\u3066\u3044\u308b\u306e\u3067\u3001\u30db\u30b9\u30c8\u306b\u306a\u308b\u30b3\u30fc\u30c9\u3092\u3054\u308a\u3054\u308a\u66f8\u3044\u3066\u3044\u308b\u308f\u3051\u3067\u3059\u304c\u3001GTK \u3068\u304b Qt \u3068\u304b\u3067\u30e6\u30fc\u30b6\u30a4\u30f3\u30bf\u30d5\u30a7\u30a4\u30b9\u4f5c\u308b\u306e\u3060\u308b\u3044\u306a\u30fc\u3001\u3068\u601d\u3063\u3066 HTML+JavaScript \u3067\u3084\u308b\u3053\u3068\u306b\u3057\u307e\u3044\u305f\u3002\u6700\u8fd1\u306f nmny<\/a> \u4f5c\u3063\u305f\u308a\u3057\u3066\u3051\u3063\u3053\u3046 JavaScript \u66f8\u3044\u3066\u305f (\u304d\u308c\u3044\u306a\u30b3\u30fc\u30c9\u3058\u3083\u306a\u3044\u3068\u6012\u3089\u308c\u305d\u3046\u3067\u3059\u304c) \u306e\u3067\u3001\u307e\u3042\u3044\u3051\u308b\u304b\u306a\u30fc\u3001\u3068\u3002
\n\u30d6\u30e9\u30a6\u30b6\u3067\u8868\u793a\u3055\u305b\u308b\u90e8\u5206\u304b\u3089 AJAX \u3067\u30c7\u30fc\u30bf\u3092\u53d6\u308a\u306b\u3044\u3051\u3070\u3044\u3044\u308f\u3051\u3067\u3059\u304c\u3001\u305d\u3046\u3059\u308b\u3068\u4f55\u304c\u554f\u984c\u304b\u3068\u3044\u3046\u3068\u3001HTTP \u306e\u3068\u3053\u308d\u3092\u81ea\u5206\u3067\u66f8\u304b\u306a\u3044\u3068\u3044\u3051\u306a\u3044\u3068\u3053\u308d\u3067\u3059\u3002\u4eca\u56de\u306e\u5834\u5408\u3001\u4f1a\u5834\u3067\u30d7\u30ed\u30b8\u30a7\u30af\u30bf\u306b\u63a5\u7d9a\u3059\u308b\u30de\u30b7\u30f3\u4e00\u53f0\u3060\u3051\u3067\u898b\u3089\u308c\u308c\u3070\u3044\u3044\u306e\u3067\u3001\u8907\u6570\u306e\u30d6\u30e9\u30a6\u30b6\u304b\u3089\u540c\u6642\u306b\u30bb\u30c3\u30b7\u30e7\u30f3\u3092\u5f35\u3089\u308c\u308b\u3053\u3068\u306f\u8003\u3048\u3066\u3044\u307e\u305b\u3093\u3002
\n\u306a\u3093\u3068\u304b\u308f\u308a\u3068\u3061\u3083\u3093\u3068\u52d5\u304f\u3088\u3046\u306b\u306a\u3063\u305f\u306e\u3067\u3059\u304c\u3001\u5f15\u3063\u304b\u304b\u3063\u305f\u30dd\u30a4\u30f3\u30c8\u3092\u8a18\u9332\u3057\u3066\u304a\u304d\u307e\u3059\u3002\u306a\u306b\u3057\u308d\u3001MPI \u3068\u304b\u3058\u3083\u306a\u304f\u3066\u3001\u76f4\u63a5 TCP \u3067\u901a\u4fe1\u3059\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u307e\u3068\u3082\u306b\u66f8\u304f\u306e\u306f\u3001\u81ea\u5206\u304c\u5b66\u751f\u3060\u3063\u305f\u3068\u304d\u306e\u5b66\u751f\u5b9f\u9a13\u4ee5\u6765\u306a\u306e\u3067…<\/p>\n

Address already in use<\/h3>\n

\u30c7\u30d0\u30c3\u30b0\u4e2d\u306f\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u8d70\u3089\u305b\u3066\u6b62\u3081\u3066\u3001\u4fee\u6b63\u3057\u3066\u306f\u3059\u3050\u8d77\u52d5\u3059\u308b\u308f\u3051\u3067\u3059\u304c\u3001\u3059\u3050\u540c\u3058\u30dd\u30fc\u30c8\u3092\u4f7f\u3046\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u8d70\u3089\u305b\u308b\u3068 Address already in use \u306b\u306a\u3063\u3066 bind() \u3067\u304d\u306a\u3044\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002
\n\u3053\u308c\u306f\u3001\u30bd\u30b1\u30c3\u30c8\u304c close \u3055\u308c\u3066\u3082\u3057\u3070\u3089\u304f\u518d\u5229\u7528\u3067\u304d\u306a\u3044\u305f\u3081 (\u518d\u5229\u7528\u3067\u304d\u308b\u307e\u3067\u306e\u6642\u9593\u306fTCP\/IP stack\u306e\u5b9f\u88c5\u4f9d\u5b58\u3063\u307d\u3044) \u3067\u3001setsockopt() \u3092\u4f7f\u3063\u3066\u89e3\u6c7a\u3057\u307e\u3059\u3002FreeBSD\/MacOS X \u3067\u306f SO_REUSEPORT \u3082\u6307\u5b9a\u3057\u307e\u3059\u304c\u3001Linux \u3067\u306f SO_REUSEADDR \u3060\u3051\u3067\u52d5\u304f\u307f\u305f\u3044\u3001\u3068\u3044\u3046\u304b\u3001SO_REUSEPORT \u304c\u3042\u308a\u307e\u305b\u3093\u3067\u3057\u305f\u3002
\n[code:cpp]
\n\u00a0 setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char*)&on, sizeof(on));
\n#if defined (__FreeBSD__) \u00a0|| (__APPLE__)
\n\u00a0 setsockopt(sock, SOL_SOCKET, SO_REUSEPORT, (char*)&on, sizeof(on));
\n#endif
\n[\/code]<\/p>\n

\u30d6\u30e9\u30a6\u30b6\u3078\u30c7\u30fc\u30bf\u3092\u9001\u4fe1\u3059\u308b\u30bf\u30a4\u30df\u30f3\u30b0<\/h3>\n

\u3044\u307e\u306e\u3068\u3053\u308d\u8907\u6570\u306e\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304b\u3089\u63a5\u7d9a\u3055\u308c\u308b\u3053\u3068\u306f\u306a\u3044\u306e\u3067\u3001\u4f55\u56de\u76ee\u306e\u30a2\u30af\u30bb\u30b9\u3067\u306f\u3053\u308c\u3092\u8fd4\u3059\u3001\u3068\u3044\u3046\u306e\u304c\u9759\u7684\u306b\u6c7a\u307e\u3063\u3066\u3044\u307e\u3059\u3002\u305d\u3053\u3067\u3001accept() \u3067\u63a5\u7d9a\u304c\u6210\u7acb\u3057\u305f\u3089\u3059\u3050\u306b\u30d6\u30e9\u30a6\u30b6\u306b\u30c7\u30fc\u30bf\u3092\u9001\u4fe1\u3059\u308c\u3070\u3044\u3044\u3084\u3001\u3068\u601d\u3063\u305f\u306e\u3067\u3059\u304c\u3001\u30d6\u30e9\u30a6\u30b6\u306b\u3088\u3063\u3066\u306f\u30d6\u30e9\u30a6\u30b6\u304c\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u9001\u4fe1\u3059\u308b\u307e\u3048\u306b\u30c7\u30fc\u30bf\u304c\u5c4a\u304f\u3068\u30a8\u30e9\u30fc\u306b\u306a\u308b\u3088\u3046\u3067\u3059\u3002
\n\u3061\u3083\u3093\u3068 GET \u304c\u304f\u308b\u307e\u3067\u5f85\u3061\u307e\u3057\u3087\u3046\u3002\u3042\u305f\u308a\u307e\u3048\u304b…<\/p>\n

Socket \u3092 close() \u3059\u308b\u524d\u306b<\/h3>\n

BSD \u7cfb\u306e\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u554f\u984c\u304c\u8d77\u304d\u306a\u304b\u3063\u305f\u306e\u3067\u3059\u304c\u3001Linux \u3067\u306f\u30c7\u30fc\u30bf\u304c\u30d6\u30e9\u30a6\u30b6\u5074\u306b\u5c4a\u304f\u524d\u306b\u3001\u30b5\u30fc\u30d0\u5074\u304b\u3089 RST \u304c\u9001\u4fe1\u3055\u308c\u3066\u63a5\u7d9a\u304c\u5207\u308c\u3066\u3057\u307e\u3046\u554f\u984c\u304c\u304a\u304d\u307e\u3057\u305f (\u3053\u308c\u306f\u6700\u521d\u5168\u7136\u308f\u304b\u3089\u306a\u304f\u3066\u3001wireshark \u3067\u901a\u4fe1\u306e\u69d8\u5b50\u3092\u306e\u305e\u3044\u3066\u307f\u3066\u306f\u3058\u3081\u3066\u6c17\u3065\u304d\u307e\u3057\u305f)\u3002RST \u304c\u7a81\u7136\u9001\u3089\u308c\u308b\u306e\u3067\u3001\u30d6\u30e9\u30a6\u30b6\u306b\u3069\u3053\u307e\u3067\u30c7\u30fc\u30bf\u304c\u9001\u308c\u308b\u304b\u306f\u3001\u6bce\u56de\u9055\u3046\u611f\u3058\u3067\u3059\u3002
\n\u6700\u521d\u306f socket \u3092 fdopen() \u3057\u3066 fgets() \u3084 fprintf() \u3067\u30a2\u30af\u30bb\u30b9\u3059\u308b\u306e\u304c\u60aa\u3044\u306e\u304b\u306a\u3001\u3068\u601d\u3063\u3066\u3001\u6700\u5f8c\u306b fflush() \u3057\u3066\u307f\u305f\u308a\u3057\u305f\u306e\u3067\u3059\u304c\u3001\u72b6\u6cc1\u306f\u6539\u5584\u3057\u307e\u305b\u3093\u3002\u305d\u308c\u3067\u3001\u307e\u3058\u3081\u306b send() \u3068 recv() \u3092\u4f7f\u3046\u3088\u3046\u306b\u3082\u3057\u3066\u307f\u307e\u3057\u305f\u304c\u3001\u3084\u306f\u308a\u3046\u307e\u304f\u52d5\u4f5c\u3057\u307e\u305b\u3093\u3002
\n\u3067\u3001\u3044\u308d\u3044\u308d\u8abf\u3079\u305f\u7d50\u679c\u3001\u53d7\u4fe1\u30d0\u30c3\u30d5\u30a1\u306b\u30c7\u30fc\u30bf\u304c\u6b8b\u3063\u305f\u72b6\u614b\u3067 socket \u3092 close() \u3059\u308b\u3068 RST \u304c\u9001\u4fe1\u3055\u308c\u308b<\/em>\u3068\u3044\u3046\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3057\u305f\u3002\u3064\u307e\u308a\u3001GET \u304c\u304d\u305f\u3060\u3051\u3067\u8fd4\u4e8b\u3092\u9001\u3063\u3066\u3044\u305f\u306e\u3067\u3059\u304c\u3001\u6700\u5f8c\u306e\u7a7a\u884c\u307e\u3067\u53d7\u4fe1\u3057\u3066\u304b\u3089\u8fd4\u4e8b\u3092\u3059\u308c\u3070 OK \u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002
\n\u53d7\u4fe1\u30d0\u30c3\u30d5\u30a1\u304c\u7a7a\u3067\u306a\u3044\u3068 close() \u306e\u3068\u304d\u306b RST \u304c\u9001\u4fe1\u3055\u308c\u308b\u3068\u3044\u3046\u6319\u52d5\u3001\u3082\u3057\u304b\u3057\u305f\u3089 Linux \u3060\u3051\u306a\u306e\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u3001\u6c17\u3092\u3064\u3051\u306a\u3044\u3068\u3044\u3051\u307e\u305b\u3093\u306d\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

ICFPT Design Competition \u306e\u59d4\u54e1\u3092\u3084\u3063\u3066\u3044\u308b\u306e\u3067\u3001\u30db\u30b9\u30c8\u306b\u306a\u308b\u30b3\u30fc\u30c9\u3092\u3054\u308a\u3054\u308a\u66f8\u3044\u3066\u3044\u308b\u308f\u3051\u3067\u3059\u304c\u3001GTK \u3068\u304b Qt \u3068\u304b\u3067\u30e6\u30fc\u30b6\u30a4\u30f3\u30bf\u30d5\u30a7\u30a4\u30b9\u4f5c\u308b\u306e\u3060\u308b\u3044\u306a\u30fc\u3001\u3068\u601d\u3063\u3066 HTML+JavaSc … “TCP \u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3042\u308c\u3053\u308c” \u306e<\/span>\u7d9a\u304d\u3092\u8aad\u3080<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"activitypub_content_warning":"","activitypub_content_visibility":"","activitypub_max_image_attachments":4,"activitypub_interaction_policy_quote":"anyone","activitypub_status":"","footnotes":""},"categories":[6],"tags":[],"class_list":["post-2665","post","type-post","status-publish","format-standard","hentry","category-unix-"],"_links":{"self":[{"href":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/wp-json\/wp\/v2\/posts\/2665","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/wp-json\/wp\/v2\/comments?post=2665"}],"version-history":[{"count":0,"href":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/wp-json\/wp\/v2\/posts\/2665\/revisions"}],"wp:attachment":[{"href":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/wp-json\/wp\/v2\/media?parent=2665"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/wp-json\/wp\/v2\/categories?post=2665"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/wp-json\/wp\/v2\/tags?post=2665"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}