{"author_name":"masami256","provider_name":"Hatena Blog","provider_url":"https://hatena.blog","categories":["linux","network"],"height":"190","width":"100%","description":"TFO(tcp fastopen)\u3067\u904a\u3093\u3067\u3044\u3066\u6c17\u4ed8\u3044\u305f\u3093\u3067\u3059\u304c\u3001sendto(2)\u3068sendmsg(2)\u306fflags\u306b\u672a\u77e5\u306e\u5024\u3092\u30bb\u30c3\u30c8\u3057\u305f\u3068\u304d\u306e\u6271\u3044\u304c\u4e21\u8005\u3067\u6319\u52d5\u306e\u5dee\u304c\u3042\u308b\u3063\u307d\u3044\u3002 \u3053\u306eflags\u5f15\u6570\u306fMSG_PEEK\u3068\u304bMSG_XXX\u306a\u3082\u306e\u3092\u8ad6\u7406\u548c\u3068\u3063\u305f\u7d50\u679c\u3092\u6e21\u3057\u307e\u3059\u304c\u3001\u3053\u306e\u5909\u6570\u306b\u672a\u77e5\u306e\u5024\u3092\u6e21\u3057\u305f\u3068\u304d\uff08\u4eca\u306fTFO\u306a\u306e\u30670x20000000\u3092\u6e21\u3057\u305f\u3068\u304d\uff09\u306bsendmsg(2)\u306f-EINVAL\u3092\u8fd4\u3057\u3066\u304f\u308b\u3051\u3069sendto(2)\u306f\u30a8\u30e9\u30fc\u306b\u306a\u3089\u305a\u306b\u51e6\u7406\u304c\u6210\u529f\u3057\u307e\u3057\u305f\u3002\u3061\u306a\u307f\u306b\u3001TFO\u306e\u5024\u30920x20000000\u3068\u3057\u3066\u3044\u308b\u306e\u306flinux\u30ab\u30fc\u30cd\u30eb\u306e\u30d8\u30c3\u30c0\u30fc\uff08include/linux/socket.h)\u3067M\u2026","type":"rich","blog_title":"\u03c6(\u30fb\u30fb*)\u309e \uff73\uff70\uff9d\u3000\u30ab\u30fc\u30cd\u30eb\u3068\u304b\u5f04\u3063\u305f\u308a\u306e\u30e1\u30e2","version":"1.0","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fkernhack.hatenablog.com%2Fentry%2F2013%2F05%2F26%2F123134\" title=\"\u03c6(\u30fb\u30fb*)\u309e \uff73\uff70\uff9d sendto(2)\u3068sendmsg(2)\u306b\u6e21\u3059flags\u306b\u95a2\u3059\u308b\u6319\u52d5\u306e\u5dee - \u03c6(\u30fb\u30fb*)\u309e \uff73\uff70\uff9d\u3000\u30ab\u30fc\u30cd\u30eb\u3068\u304b\u5f04\u3063\u305f\u308a\u306e\u30e1\u30e2\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","published":"2013-05-26 12:31:34","image_url":null,"url":"https://kernhack.hatenablog.com/entry/2013/05/26/123134","title":"\u03c6(\u30fb\u30fb*)\u309e \uff73\uff70\uff9d sendto(2)\u3068sendmsg(2)\u306b\u6e21\u3059flags\u306b\u95a2\u3059\u308b\u6319\u52d5\u306e\u5dee","author_url":"https://blog.hatena.ne.jp/masami256/","blog_url":"https://kernhack.hatenablog.com/"}