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>>5056 Misaki ¤½¤¦¤¤¤¦»ö¾Ý¤Ïʹ¤¤¤¿¤³¤È¤¬¤Ê¤¤¤Ç¤¹¤¬¡¢¤¢¤ê¤¦¤ë¤³¤È¤È¤·¤Æ¤Ï libjpeg ¤Î¥ê¥ó¥¯¤¬¤¦¤Þ¤¯¤¤¤Ã¤Æ¤¤¤Ê¤¤¡¢¤Ç¤·¤ç¤¦¤« (¤½¤ì¤Ë¤·¤Æ¤â ¥¨¥é¡¼¤¬½Ð¤ë¤Î¤Ç¤Ï¤Ê¤¤¤«¤È»×¤¦¤Î¤Ç¤¹¤¬)¡£ ÊÑ´¹Á°¸å¤Î¥Õ¥¡¥¤¥ë¤ò file ¥³¥Þ¥ó¥É¤ÇÄ´¤Ù¤Æ¤â¡¢¤ä¤Ï¤ê gif ¤Ç¤·¤ç¤¦¤«? |
>> 5057 Áᮡ¢²óÅú¤¢¤ê¤¬¤È¤¦¤´¤¶¤¤¤Þ¤¹¡£ file¥³¥Þ¥ó¥É¤Çgif¤«¤É¤¦¤«È½Ê̤Ǥ¤ë¤ó¤Ç¤¹¤Í¡ª ¤ä¤Ã¤Æ¤ß¤¿¤È¤³¤íGIF¤Ç¤·¤¿¡£ ´Êñ¤ËÄ´¤Ù¤Æ¤ß¤Þ¤·¤¿¤¬libjpeg¤¬¾å¼ê¤¯Æþ¤Ã¤Æ¤¤¤Ê¤«¤Ã¤¿¤è¤¦¤Ç¤¹¡£ µ¢¤Ã¤¿¤é¤â¤¦¤Á¤ç¤Ã¤È¾Ü¤·¤¯Ä´¤Ù¤Æ¤ß¤Þ¤¹¡£ ldd·ë²Ì $/usr/bin/ldd /usr/local/bin/convert linux-gate.so.1 => (0x00110000) libMagickCore.so.3 => /usr/local/lib/libMagickCore.so.3 (0x00111000) libMagickWand.so.3 => /usr/local/lib/libMagickWand.so.3 (0x00427000) libz.so.1 => /usr/lib/libz.so.1 (0x0059a000) libpthread.so.0 => /lib/libpthread.so.0 (0x005af000) libdl.so.2 => /lib/libdl.so.2 (0x0056b000) libgomp.so.1 => /usr/lib/libgomp.so.1 (0x00523000) libm.so.6 => /lib/libm.so.6 (0x00571000) libc.so.6 => /lib/libc.so.6 (0x005c6000) /lib/ld-linux.so.2 (0x0040c000) librt.so.1 => /lib/librt.so.1 (0x0081e000) |
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>>5059 Misaki > ´Êñ¤ËÄ´¤Ù¤Æ¤ß¤Þ¤·¤¿¤¬libjpeg¤¬¾å¼ê¤¯Æþ¤Ã¤Æ¤¤¤Ê¤«¤Ã¤¿¤è¤¦¤Ç¤¹¡£ ¤³¤ì¤Ï¤Þ¤¿¥·¥ó¥×¥ë¤Ê convert ¤Ç¤¹¤Í¡£¥¦¥Á¤Ç¤Ï°Ê²¼¤Î¤È¤ª¤ê¤Ç¤¹¡£ /usr/local/bin/convert: libMagick.so.10 => /usr/local/lib/libMagick.so.10 (0x28073000) libWand.so.10 => /usr/local/lib/libWand.so.10 (0x283c7000) libjbig.so.1 => /usr/local/lib/libjbig.so.1 (0x28479000) liblcms.so.1 => /usr/local/lib/liblcms.so.1 (0x28484000) libtiff.so.4 => /usr/local/lib/libtiff.so.4 (0x284b1000) libjasper.so.4 => /usr/local/lib/libjasper.so.4 (0x284fe000) libjpeg.so.9 => /usr/local/lib/libjpeg.so.9 (0x28548000) libpng.so.5 => /usr/local/lib/libpng.so.5 (0x28566000) libfpx.so.1 => /usr/local/lib/libfpx.so.1 (0x2858b000) libdpstk.so.1 => /usr/X11R6/lib/libdpstk.so.1 (0x2862b000) libdps.so.1 => /usr/X11R6/lib/libdps.so.1 (0x28633000) libXext.so.6 => /usr/X11R6/lib/libXext.so.6 (0x2867a000) libXt.so.6 => /usr/X11R6/lib/libXt.so.6 (0x28689000) libbz2.so.1 => /usr/lib/libbz2.so.1 (0x286da000) libxml2.so.5 => /usr/local/lib/libxml2.so.5 (0x286e9000) libiconv.so.3 => /usr/local/lib/libiconv.so.3 (0x28818000) libfreetype.so.9 => /usr/local/lib/libfreetype.so.9 (0x28907000) libz.so.2 => /lib/libz.so.2 (0x28971000) libSM.so.6 => /usr/X11R6/lib/libSM.so.6 (0x2897f000) libICE.so.6 => /usr/X11R6/lib/libICE.so.6 (0x28988000) libX11.so.6 => /usr/X11R6/lib/libX11.so.6 (0x2899f000) libm.so.2 => /lib/libm.so.2 (0x28a67000) libc.so.5 => /lib/libc.so.5 (0x28a80000) libstdc++.so.4 => /usr/lib/libstdc++.so.4 (0x28b5a000) >>5060 ¤«¤Ð¤é > ¼ÁÌ䣱 > ¥¯¥é¥¤¥¢¥ó¥È¦¤«¤éȯ¹Ô¤µ¤ì¤ëconnect()¤Ï¥µ¡¼¥Ð¡¼Â¦¤Çȯ¹Ô¤µ¤ì¤ëaccept()¤Î > ¤è¤¦¤Ë½èÍý¤ò¥í¥Ã¥¯¤¹¤ë¤³¤È¤¬¤¢¤ë¤Î¤Ç¤·¤ç¤¦¤«¡£¤â¤·¤¢¤ë¤È¤¹¤ì¤Ð¤É¤Î > ¥¿¥¤¥ß¥ó¥°¤Ç¥³¡¼¥ë¤·¤¿¾ì¹ç¤Ç¤·¤ç¤¦¤«¡£ ¡Öconnect ¤Ï¥Ö¥í¥Ã¥¯¤¹¤ë¤«¡×(connect ¤òȯ¹Ô¤·¤¿¸å¡¢ÂÔ¤¿¤µ¤ì¤ë¤³¤È¤Ï¤¢¤ë¤«) ¤È¤¤¤¦¼ñ»Ý¤Ç¤è¤¤¤Ç¤¹¤«¤Í¡£¤¶¤Ã¤È¹Í¤¨¤Ä¤¯¤È¤³¤í¤Ï¡¢ 1. 3way handshake ¤¬´°Î»¤¹¤ë¤Þ¤Ç¥Ö¥í¥Ã¥¯¤¹¤ë 2. ¥µ¡¼¥Ð¤â¤·¤¯¤Ï¥µ¡¼¥Ð¦¥ë¡¼¥¿¤Ë¤Æ°ìÀڤΥ쥹¥Ý¥ó¥¹¤òÊÖ¤µ¤Ê¤¤ ¹½À®¤Î¾ì¹ç¡¢¤¤¤Ä¤Þ¤Ç¤¿¤Ã¤Æ¤âÊÖ»ö¤¬¤Ê¤¤¤Î¤Ç SYN ¤òÁ÷¤ê³¤±¡¢¥Ö¥í¥Ã¥¯¤¹¤ë 3. ¥µ¡¼¥Ð¦¤Ç½èÍý¤·¤Æ¤¤¤ë¥½¥±¥Ã¥È¿ô¤¬ SOMAXCONN ¤òͤ¨¤Æ¤¤¤¿¾ì¹ç¡¢ ÂÚα¤·¤Æ¤¤¤ë¥¯¥é¥¤¥¢¥ó¥È¤Î½èÍý¤¬½ª¤ï¤ë¤«¡¢¥¿¥¤¥à¥¢¥¦¥È¤Ë¤Ê¤ë¤Þ¤Ç ¥Ö¥í¥Ã¥¯¤¹¤ë 4. ¥µ¡¼¥Ð¦¤¬ listen ¤·¤Æ¤¤¤ë¤¬ accept ¤·¤Æ¤¤¤Ê¤¤¾ì¹ç¡¢¥Ö¥í¥Ã¥¯¤¹¤ë ¤Ê¤É¤Ê¤É¡£3¡¦4 ¤Ïµ²±¤ËÍê¤Ã¤Æ½ñ¤¤¤Æ¤Þ¤¹¤Î¤Ç¡¢ËÜÅö¤«¤É¤¦¤«¤Ï¼«¿®¤¬¤Ê¤¤¤Ç¤¹¡£ °ìÊý¡¢¥Î¥ó¥Ö¥í¥Ã¥¥ó¥°¥½¥±¥Ã¥È¤Ç connet ¤¹¤ì¤Ð¡¢¥Ö¥í¥Ã¥¯¤·¤Þ¤»¤ó¡£ > ¼ÁÌ䣲 > ¥µ¡¼¥Ð¡¼Â¦¤¬listen()¤ò¥³¡¼¥ë¤¹¤ë°ÊÁ°¤Ë¥¯¥é¥¤¥¢¥ó¥È¦¤Çconnect()¤ò¥³¡¼¥ë > ¤ë¤È¥¨¥é¡¼(ÊÖµÑÃÍ-1)¤¬µ¯¤¤Þ¤¹¤¬¡¢¥¯¥é¥¤¥¢¥ó¥È¤¬¥µ¡¼¥Ð¡¼¤Î¾õÂÖ¤ò´Æ»ë¤·¡¢ > connect()¤ò¥³¡¼¥ë¤¹¤ë¥¿¥¤¥ß¥ó¥°¤òÆÀ¤ë¤³¤È¤Ï²Äǽ¤Ç¤·¤ç¤¦¤«¡£ > ¡Ê»î¤·¤Ëselect()¤ò»ÈÍѤ·¤Æ¤ß¤Þ¤·¤¿¤¬¾å¼ê¤¯¤¤¤¤Þ¤»¤ó¤Ç¤·¤¿¡£¡Ë ¥µ¡¼¥Ð¦¤Ç½àÈ÷¤¬À°¤Ã¤¿¤éÄÌÃΤ¬¤¯¤ë¤È¤¤¤Ã¤¿»ÅÁȤߤϤʤ¤¤Î¤Ç¡¢¥ê¥È¥é¥¤ ¤·Â³¤±¤ë¤·¤«¤Ê¤¤¤Ç¤¹¤Í¡£ |
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