{"id":1028,"date":"2019-11-26T10:28:52","date_gmt":"2019-11-26T02:28:52","guid":{"rendered":"http:\/\/149.129.74.185\/?p=1028"},"modified":"2019-11-26T18:28:46","modified_gmt":"2019-11-26T10:28:46","slug":"%e8%ae%a1%e7%ae%97%e6%9c%ba%e7%bd%91%e7%bb%9cweek-11-note","status":"publish","type":"post","link":"http:\/\/www.magicmipamipa.com\/?p=1028","title":{"rendered":"[\u8ba1\u7b97\u673a\u7f51\u7edc]Week 11 Note"},"content":{"rendered":"

Three-way handshake release<\/p>\n

\u8bf7\u6c42\u91ca\u653eDR-\u8bf7\u6c42\u91ca\u653eDR-(\u786e\u8ba4ACK-\u786e\u8ba4ACK)<\/p>\n

\u5b9a\u65f6\u5668\u89e6\u53d1\u7684\u8d85\u65f6\u673a\u5236 \u5b9a\u65f6\u91ca\u653e \u907f\u514d\u4e00\u76f4\u4e0d\u91ca\u653e<\/p>\n

*\u6700\u591a\u5f0065535\u4e2a\u7aef\u53e3\u00a0\u57281024\u503c\u4ee5\u5185 \u4f5c\u4e3a\u4fdd\u7559\u7aef\u53e3<\/p>\n

web\u8fde\u63a5\u6570\u636e\u5e93\u4f1a\u4f7f\u7528tcp\u8fde\u63a5<\/p>\n\n\n\n\n\n\n\n\n\n\n\n
Source<\/td>\n\u6e90\u5730\u5740<\/td>\n<\/tr>\n
Destination-Port<\/td>\n\u4e24\u5b57\u8282\u7684\u7aef\u53e3<\/td>\n<\/tr>\n
Sequence number<\/td>\n\u5e8f\u53f7\uff08\u5b57\u8282\u7684\u7f16\u53f7\uff09<\/td>\n<\/tr>\n
Acknowledgement number<\/td>\n\u4e0b\u4e00\u4e2a\u8981\u63a5\u6536\u7684\u6570\u636e\u5305\uff08\u4e5f\u662f\u5b57\u8282\u7684\u7f16\u53f7\uff09<\/td>\n<\/tr>\n
ACK<\/td>\n\u00a0\u5df2\u6210\u529f\u63a5\u53d7\u5e8f\u5217\u53f7\u5230\u00a0ack-1\u00a0\u7684\u6570\u636e\uff0c\u671f\u671b\u63a5\u6536\u7684\u4e0b\u4e00\u4e2a\u5b57\u8282\u7684\u5e8f\u53f7\u4e3a\u00a0ack<\/strong><\/td>\n<\/tr>\n
SYN\uff08\u8fde\u63a5\u8bf7\u6c42\uff09<\/td>\n\u8fde\u63a5\u8bf7\u6c42\u6807\u5fd7\u00a0\u53d1\u9001\u7684\u8fd9\u4e2a\u5305\u4e2d\u7b2c\u4e00\u4e2a\u5b57\u8282\uff08\u5982\u679c\u6709payload\u7684\u8bdd\uff09\u7684\u5e8f\u53f7<\/strong><\/td>\n<\/tr>\n
FIN<\/td>\n\u5904\u7406\u91ca\u653e<\/td>\n<\/tr>\n
Window size<\/td>\n\u63a5\u6536\u65b9\u80fd\u63a5\u53d7\u591a\u5c11\u5b57\u8282\uff08\u63a5\u6536\u65b9\u4e3b\u52a8\u4fee\u6539win size\uff09<\/td>\n<\/tr>\n
<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

TCP\u8fde\u63a5\u5efa\u7acb\uff1a<\/p>\n

Host1.send-> SYN(SEQ=x\u968f\u673a\u6570\u62160)<\/p>\n

SYN(SEQ=y,ACK=x+1)<- Host2.send<\/p>\n

Host1.send-> (SEQ=x+1,ACK=y+1)<\/p>\n

\u5982\u679c\u53cc\u65b9\u540c\u65f6\u53d1\u9001\u8fde\u63a5\u8bf7\u6c42\uff1a<\/p>\n

Host1.send ->SYN(SEQ=x)<\/p>\n

SYN(SEQ=y)<- Host2.send<\/p>\n

SYN(SEQ=y,ACK=x+1)<- Host2.send<\/p>\n

Host1.send->SYN(SEQ=x,ACK=y+1)<\/p>\n

 <\/p>\n

\u7edf\u8ba1\u5f97\u5230\u5e73\u5747\u54cd\u5e94\u65f6\u95f4\u4f5c\u4e3a\u8d85\u65f6\u65f6\u95f4\u7684\u53c2\u8003<\/p>\n

Tahoe<\/p>\n

slow start \u9010\u6b65\u63a5\u8fd1 \u68c0\u6d4b\u8d85\u65f6\u540e\u7acb\u523b\u4ece0\u7ee7\u7eed<\/p>\n

Reno<\/p>\n

Threshold \u9010\u6b65\u964d\u4f4e<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Three-way handshake release \u8bf7\u6c42\u91ca\u653eDR-\u8bf7\u6c42\u91ca\u653eDR-(\u786e\u8ba4ACK-\u786e […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[19,16],"tags":[],"_links":{"self":[{"href":"http:\/\/www.magicmipamipa.com\/index.php?rest_route=\/wp\/v2\/posts\/1028"}],"collection":[{"href":"http:\/\/www.magicmipamipa.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.magicmipamipa.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.magicmipamipa.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.magicmipamipa.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1028"}],"version-history":[{"count":3,"href":"http:\/\/www.magicmipamipa.com\/index.php?rest_route=\/wp\/v2\/posts\/1028\/revisions"}],"predecessor-version":[{"id":1033,"href":"http:\/\/www.magicmipamipa.com\/index.php?rest_route=\/wp\/v2\/posts\/1028\/revisions\/1033"}],"wp:attachment":[{"href":"http:\/\/www.magicmipamipa.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1028"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.magicmipamipa.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1028"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.magicmipamipa.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1028"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}