{"id":95800,"date":"2024-03-21T19:45:23","date_gmt":"2024-03-21T10:45:23","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/c%e8%a8%80%e8%aa%9e%e3%81%a7%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e3%81%ae%e3%82%a2%e3%83%83%e3%83%97%e3%83%ad%e3%83%bc%e3%83%89%e6%a9%9f%e8%83%bd%e3%82%92%e5%ae%9f%e8%a3%85%e3%81%99%e3%82%8b%e3%81%ab\/"},"modified":"2024-03-27T17:43:03","modified_gmt":"2024-03-27T08:43:03","slug":"c%e8%a8%80%e8%aa%9e%e3%81%a7%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e3%81%ae%e3%82%a2%e3%83%83%e3%83%97%e3%83%ad%e3%83%bc%e3%83%89%e6%a9%9f%e8%83%bd%e3%82%92%e5%ae%9f%e8%a3%85%e3%81%99%e3%82%8b%e3%81%ab","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/c%e8%a8%80%e8%aa%9e%e3%81%a7%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e3%81%ae%e3%82%a2%e3%83%83%e3%83%97%e3%83%ad%e3%83%bc%e3%83%89%e6%a9%9f%e8%83%bd%e3%82%92%e5%ae%9f%e8%a3%85%e3%81%99%e3%82%8b%e3%81%ab\/","title":{"rendered":"C\u8a00\u8a9e\u3067\u30d5\u30a1\u30a4\u30eb\u306e\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u6a5f\u80fd\u3092\u5b9f\u88c5\u3059\u308b\u306b\u306f\u3069\u3046\u3059\u308c\u3070\u3088\u3044\u3067\u3059\u304b\uff1f"},"content":{"rendered":"<p>C \u8a00\u8a9e\u3067\u30d5\u30a1\u30a4\u30eb\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u6a5f\u80fd\u3092\u5b9f\u73fe\u3059\u308b\u306b\u306f\u3001\u30bd\u30b1\u30c3\u30c8\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3092\u7528\u3044\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30b7\u30f3\u30d7\u30eb\u306a\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-meta\">#<span class=\"hljs-keyword\">include<\/span> <span class=\"hljs-string\">&lt;stdio.h&gt;<\/span><\/span>\r\n<span class=\"hljs-meta\">#<span class=\"hljs-keyword\">include<\/span> <span class=\"hljs-string\">&lt;stdlib.h&gt;<\/span><\/span>\r\n<span class=\"hljs-meta\">#<span class=\"hljs-keyword\">include<\/span> <span class=\"hljs-string\">&lt;string.h&gt;<\/span><\/span>\r\n<span class=\"hljs-meta\">#<span class=\"hljs-keyword\">include<\/span> <span class=\"hljs-string\">&lt;unistd.h&gt;<\/span><\/span>\r\n<span class=\"hljs-meta\">#<span class=\"hljs-keyword\">include<\/span> <span class=\"hljs-string\">&lt;arpa\/inet.h&gt;<\/span><\/span>\r\n\r\n<span class=\"hljs-meta\">#<span class=\"hljs-keyword\">define<\/span> BUFFER_SIZE 1024<\/span>\r\n\r\n<span class=\"hljs-type\">void<\/span> <span class=\"hljs-title function_\">error_handling<\/span><span class=\"hljs-params\">(<span class=\"hljs-type\">char<\/span> *message)<\/span>;\r\n\r\n<span class=\"hljs-type\">int<\/span> <span class=\"hljs-title function_\">main<\/span><span class=\"hljs-params\">(<span class=\"hljs-type\">int<\/span> argc, <span class=\"hljs-type\">char<\/span> *argv[])<\/span> {\r\n    <span class=\"hljs-keyword\">if<\/span> (argc != <span class=\"hljs-number\">3<\/span>) {\r\n        <span class=\"hljs-built_in\">printf<\/span>(<span class=\"hljs-string\">\"Usage: %s &lt;IP&gt; &lt;port&gt;\\n\"<\/span>, argv[<span class=\"hljs-number\">0<\/span>]);\r\n        <span class=\"hljs-built_in\">exit<\/span>(<span class=\"hljs-number\">1<\/span>);\r\n    }\r\n    \r\n    <span class=\"hljs-type\">int<\/span> sock;\r\n    <span class=\"hljs-class\"><span class=\"hljs-keyword\">struct<\/span> <span class=\"hljs-title\">sockaddr_in<\/span> <span class=\"hljs-title\">serv_addr<\/span>;<\/span>\r\n    <span class=\"hljs-type\">char<\/span> file_name[<span class=\"hljs-number\">100<\/span>];\r\n    <span class=\"hljs-type\">char<\/span> buffer[BUFFER_SIZE];\r\n    FILE *fp;\r\n    <span class=\"hljs-type\">int<\/span> file_size, remain_size, read_size, send_size;\r\n    \r\n    sock = socket(PF_INET, SOCK_STREAM, <span class=\"hljs-number\">0<\/span>);\r\n    <span class=\"hljs-keyword\">if<\/span> (sock == <span class=\"hljs-number\">-1<\/span>) {\r\n        error_handling(<span class=\"hljs-string\">\"socket() error\"<\/span>);\r\n    }\r\n    \r\n    <span class=\"hljs-built_in\">memset<\/span>(&amp;serv_addr, <span class=\"hljs-number\">0<\/span>, <span class=\"hljs-keyword\">sizeof<\/span>(serv_addr));\r\n    serv_addr.sin_family = AF_INET;\r\n    serv_addr.sin_addr.s_addr = inet_addr(argv[<span class=\"hljs-number\">1<\/span>]);\r\n    serv_addr.sin_port = htons(atoi(argv[<span class=\"hljs-number\">2<\/span>]));\r\n    \r\n    <span class=\"hljs-keyword\">if<\/span> (connect(sock, (<span class=\"hljs-keyword\">struct<\/span> sockaddr*)&amp;serv_addr, <span class=\"hljs-keyword\">sizeof<\/span>(serv_addr)) == <span class=\"hljs-number\">-1<\/span>) {\r\n        error_handling(<span class=\"hljs-string\">\"connect() error\"<\/span>);\r\n    }\r\n    \r\n    <span class=\"hljs-built_in\">printf<\/span>(<span class=\"hljs-string\">\"Enter file name to upload: \"<\/span>);\r\n    <span class=\"hljs-built_in\">scanf<\/span>(<span class=\"hljs-string\">\"%s\"<\/span>, file_name);\r\n    \r\n    fp = fopen(file_name, <span class=\"hljs-string\">\"rb\"<\/span>);\r\n    <span class=\"hljs-keyword\">if<\/span> (fp == <span class=\"hljs-literal\">NULL<\/span>) {\r\n        error_handling(<span class=\"hljs-string\">\"fopen() error\"<\/span>);\r\n    }\r\n    \r\n    fseek(fp, <span class=\"hljs-number\">0<\/span>, SEEK_END);\r\n    file_size = ftell(fp);\r\n    fclose(fp);\r\n    \r\n    fp = fopen(file_name, <span class=\"hljs-string\">\"rb\"<\/span>);\r\n    <span class=\"hljs-keyword\">if<\/span> (fp == <span class=\"hljs-literal\">NULL<\/span>) {\r\n        error_handling(<span class=\"hljs-string\">\"fopen() error\"<\/span>);\r\n    }\r\n    \r\n    <span class=\"hljs-built_in\">sprintf<\/span>(buffer, <span class=\"hljs-string\">\"%d\"<\/span>, file_size);\r\n    <span class=\"hljs-keyword\">if<\/span> (send(sock, buffer, <span class=\"hljs-keyword\">sizeof<\/span>(buffer), <span class=\"hljs-number\">0<\/span>) == <span class=\"hljs-number\">-1<\/span>) {\r\n        error_handling(<span class=\"hljs-string\">\"send() error\"<\/span>);\r\n    }\r\n    \r\n    remain_size = file_size;\r\n    <span class=\"hljs-keyword\">while<\/span> (remain_size &gt; <span class=\"hljs-number\">0<\/span>) {\r\n        read_size = fread(buffer, <span class=\"hljs-number\">1<\/span>, BUFFER_SIZE, fp);\r\n        send_size = send(sock, buffer, read_size, <span class=\"hljs-number\">0<\/span>);\r\n        remain_size -= send_size;\r\n    }\r\n    \r\n    fclose(fp);\r\n    close(sock);\r\n    \r\n    <span class=\"hljs-built_in\">printf<\/span>(<span class=\"hljs-string\">\"File upload complete\\n\"<\/span>);\r\n    \r\n    <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-number\">0<\/span>;\r\n}\r\n\r\n<span class=\"hljs-type\">void<\/span> <span class=\"hljs-title function_\">error_handling<\/span><span class=\"hljs-params\">(<span class=\"hljs-type\">char<\/span> *message)<\/span> {\r\n    <span class=\"hljs-built_in\">fputs<\/span>(message, <span class=\"hljs-built_in\">stderr<\/span>);\r\n    fputc(<span class=\"hljs-string\">'\\n'<\/span>, <span class=\"hljs-built_in\">stderr<\/span>);\r\n    <span class=\"hljs-built_in\">exit<\/span>(<span class=\"hljs-number\">1<\/span>);\r\n}\r\n<\/code><\/pre>\n<p>\u3053\u306e\u30b5\u30f3\u30d7\u30eb\u3067\u306f\u3001\u307e\u305a\u30bd\u30b1\u30c3\u30c8\u3092\u4f5c\u6210\u3057\u3001connect()\u95a2\u6570\u3067\u6307\u5b9a\u3055\u308c\u305f\u30b5\u30fc\u30d0IP\u30a2\u30c9\u30ec\u30b9\u3068\u30dd\u30fc\u30c8\u756a\u53f7\u306b\u63a5\u7d9a\u3057\u307e\u3059\u3002\u6b21\u306b\u3001\u30e6\u30fc\u30b6\u304c\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3059\u308b\u30d5\u30a1\u30a4\u30eb\u540d\u3092\u5165\u529b\u3057\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306f\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u3092\u8aad\u307f\u8fbc\u307f\u3001\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u3092\u30b5\u30fc\u30d0\u306b\u9001\u308a\u307e\u3059\u3002\u305d\u306e\u5f8c\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306f\u30d5\u30a1\u30a4\u30eb\u5185\u5bb9\u3092\u6307\u5b9a\u3055\u308c\u305f\u30d0\u30c3\u30d5\u30a1\u30b5\u30a4\u30ba\u3067\u4e00\u5ea6\u306b\u8aad\u307f\u8fbc\u307f\u3001\u30d5\u30a1\u30a4\u30eb\u306e\u9001\u4fe1\u304c\u5b8c\u4e86\u3059\u308b\u307e\u3067\u30b5\u30fc\u30d0\u306b\u9001\u4fe1\u3057\u307e\u3059\u3002\u6700\u5f8c\u306b\u3001\u30d5\u30a1\u30a4\u30eb\u3068\u30bd\u30b1\u30c3\u30c8\u304c\u9589\u3058\u3089\u308c\u3001\u30d5\u30a1\u30a4\u30eb\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u306f\u5b8c\u4e86\u3057\u307e\u3059\u3002<\/p>\n<p>\u305f\u3060\u3057\u3001\u3053\u308c\u306f\u7c21\u5358\u306a\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u3042\u308a\u3001\u30a8\u30e9\u30fc\u3084\u4f8b\u5916\u51e6\u7406\u306f\u884c\u308f\u308c\u3066\u3044\u307e\u305b\u3093\u3002\u5b9f\u969b\u306b\u306f\u30a8\u30e9\u30fc\u51e6\u7406\u3068\u4f8b\u5916\u51e6\u7406\u3092\u884c\u3044\u3001\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3055\u308c\u305f\u30d5\u30a1\u30a4\u30eb\u306e\u5b8c\u5168\u6027\u3068\u6b63\u3057\u3055\u3092\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u540c\u6642\u306b\u3001\u30b5\u30fc\u30d0\u30fc\u5074\u3067\u3082\u30d5\u30a1\u30a4\u30eb\u306e\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u6a5f\u80fd\u3092\u53d7\u3051\u53d6\u308a\u51e6\u7406\u3059\u308b\u305f\u3081\u306e\u30b3\u30fc\u30c9\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>C \u8a00\u8a9e\u3067\u30d5\u30a1\u30a4\u30eb\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u6a5f\u80fd\u3092\u5b9f\u73fe\u3059\u308b\u306b\u306f\u3001\u30bd\u30b1\u30c3\u30c8\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3092\u7528\u3044\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30b7\u30f3\u30d7\u30eb\u306a\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002 #include &lt;stdio.h&gt; #include &lt;st [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-95800","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ 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\u8a00\u8a9e\u3067\u30d5\u30a1\u30a4\u30eb\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u6a5f\u80fd\u3092\u5b9f\u73fe\u3059\u308b\u306b\u306f\u3001\u30bd\u30b1\u30c3\u30c8\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3092\u7528\u3044\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30b7\u30f3\u30d7\u30eb\u306a\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002 #include &lt;stdio.h&gt; #include &lt;st [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/ja\/blog\/c\u8a00\u8a9e\u3067\u30d5\u30a1\u30a4\u30eb\u306e\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u6a5f\u80fd\u3092\u5b9f\u88c5\u3059\u308b\u306b\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2024-03-21T10:45:23+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-03-27T08:43:03+00:00\" \/>\n<meta name=\"author\" content=\"\u967d, \u5411\u5b87\" \/>\n<meta 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