{"id":118139,"date":"2024-03-23T13:09:20","date_gmt":"2024-03-23T04:09:20","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/udp%e3%81%a7%e3%81%af%e6%8e%a5%e7%b6%9a%e3%82%92%e7%a2%ba%e7%ab%8b%e3%81%9b%e3%81%9a%e3%81%ab%e9%80%9a%e4%bf%a1%e3%82%92%e8%a1%8c%e3%81%86\/"},"modified":"2024-04-04T13:31:26","modified_gmt":"2024-04-04T04:31:26","slug":"udp%e3%81%a7%e3%81%af%e6%8e%a5%e7%b6%9a%e3%82%92%e7%a2%ba%e7%ab%8b%e3%81%9b%e3%81%9a%e3%81%ab%e9%80%9a%e4%bf%a1%e3%82%92%e8%a1%8c%e3%81%86","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/udp%e3%81%a7%e3%81%af%e6%8e%a5%e7%b6%9a%e3%82%92%e7%a2%ba%e7%ab%8b%e3%81%9b%e3%81%9a%e3%81%ab%e9%80%9a%e4%bf%a1%e3%82%92%e8%a1%8c%e3%81%86\/","title":{"rendered":"UDP\u3067\u306f\u63a5\u7d9a\u3092\u78ba\u7acb\u305b\u305a\u306b\u901a\u4fe1\u3092\u884c\u3046"},"content":{"rendered":"

Linux\u3067\u306f\u3001UDP\uff08\u30e6\u30fc\u30b6\u30fc\u30c7\u30fc\u30bf\u30b0\u30e9\u30e0\u30d7\u30ed\u30c8\u30b3\u30eb\uff09\u306f\u63a5\u7d9a\u306a\u3057\u901a\u4fe1\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3001\u63a5\u7d9a\u3092\u78ba\u7acb\u305b\u305a\u306b\u901a\u4fe1\u3067\u304d\u307e\u3059\u3002<\/p>\n

UDP\u901a\u4fe1\u306e\u57fa\u672c\u624b\u9806\u306f\u4ee5\u4e0b\u3067\u3059\uff1a<\/p>\n

    \n
  1. \u30bd\u30b1\u30c3\u30c8()<\/li>\n<\/ol>\n
    int<\/span> sockfd = socket(AF_INET, SOCK_DGRAM, 0<\/span>);\r\n<\/code><\/pre>\n
      \n
    1. bind()<\/li>\n<\/ol>\n
      struct<\/span> sockaddr_in<\/span> servaddr<\/span>;<\/span>\r\nservaddr.sin_family = AF_INET;\r\nservaddr.sin_addr.s_addr = INADDR_ANY;\r\nservaddr.sin_port = htons(PORT);\r\nbind(sockfd, (struct<\/span> sockaddr*)&servaddr, sizeof<\/span>(servaddr));\r\n<\/code><\/pre>\n
        \n
      1. recvfrom()<\/li>\n<\/ol>\n
        char<\/span> buffer[MAX_BUFFER_SIZE];\r\nstruct<\/span> sockaddr_in<\/span> cliaddr<\/span>;<\/span>\r\nsocklen_t<\/span> len = sizeof<\/span>(cliaddr);\r\nint<\/span> n = recvfrom(sockfd, buffer, sizeof<\/span>(buffer), 0<\/span>, (struct<\/span> sockaddr*)&cliaddr, &len);\r\n<\/code><\/pre>\n
          \n
        1. sendto()<\/li>\n<\/ol>\n
          char<\/span> message[] = \"Hello, UDP!\"<\/span>;\r\nsendto(sockfd, message, strlen<\/span>(message), 0<\/span>, (struct<\/span> sockaddr*)&cliaddr, sizeof<\/span>(cliaddr));\r\n<\/code><\/pre>\n
          UDP\u306f\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u30ec\u30b9\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u305f\u3081\u3001\u30d1\u30b1\u30c3\u30c8\u306e\u7d1b\u5931\u3084\u9806\u5e8f\u306e\u4e71\u308c\u3001\u91cd\u8907\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u518d\u9001\u6a5f\u69cb\u3084\u30c1\u30a7\u30c3\u30af\u30b5\u30e0\u3001\u691c\u8a3c\u306a\u3069\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5c64\u3067\u3053\u308c\u3089\u306e\u554f\u984c\u306b\u5bfe\u51e6\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
          \u4e0a\u8a18\u306e\u3082\u306e\u306fUDP\u901a\u4fe1\u306e\u57fa\u672c\u7684\u306a\u624b\u9806\u3067\u3001\u5177\u4f53\u7684\u306a\u30cb\u30fc\u30ba\u306b\u5fdc\u3058\u3066\u4fee\u6b63\u30fb\u62e1\u5f35\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
          Linux\u3067\u306f\u3001UDP\uff08\u30e6\u30fc\u30b6\u30fc\u30c7\u30fc\u30bf\u30b0\u30e9\u30e0\u30d7\u30ed\u30c8\u30b3\u30eb\uff09\u306f\u63a5\u7d9a\u306a\u3057\u901a\u4fe1\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3001\u63a5\u7d9a\u3092\u78ba\u7acb\u305b\u305a\u306b\u901a\u4fe1\u3067\u304d\u307e\u3059\u3002 UDP\u901a\u4fe1\u306e\u57fa\u672c\u624b\u9806\u306f\u4ee5\u4e0b\u3067\u3059\uff1a \u30bd\u30b1\u30c3\u30c8() int sockfd = socket(AF_INET, […]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-118139","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\nUDP\u3067\u306f\u63a5\u7d9a\u3092\u78ba\u7acb\u305b\u305a\u306b\u901a\u4fe1\u3092\u884c\u3046 - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/ja\/blog\/udp\u3067\u306f\u63a5\u7d9a\u3092\u78ba\u7acb\u305b\u305a\u306b\u901a\u4fe1\u3092\u884c\u3046\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"UDP\u3067\u306f\u63a5\u7d9a\u3092\u78ba\u7acb\u305b\u305a\u306b\u901a\u4fe1\u3092\u884c\u3046\" \/>\n<meta property=\"og:description\" content=\"Linux\u3067\u306f\u3001UDP\uff08\u30e6\u30fc\u30b6\u30fc\u30c7\u30fc\u30bf\u30b0\u30e9\u30e0\u30d7\u30ed\u30c8\u30b3\u30eb\uff09\u306f\u63a5\u7d9a\u306a\u3057\u901a\u4fe1\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3001\u63a5\u7d9a\u3092\u78ba\u7acb\u305b\u305a\u306b\u901a\u4fe1\u3067\u304d\u307e\u3059\u3002 UDP\u901a\u4fe1\u306e\u57fa\u672c\u624b\u9806\u306f\u4ee5\u4e0b\u3067\u3059\uff1a \u30bd\u30b1\u30c3\u30c8() int sockfd = socket(AF_INET, […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/ja\/blog\/udp\u3067\u306f\u63a5\u7d9a\u3092\u78ba\u7acb\u305b\u305a\u306b\u901a\u4fe1\u3092\u884c\u3046\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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