{"id":479678,"date":"2023-08-09T10:43:25","date_gmt":"2023-08-09T10:43:25","guid":{"rendered":""},"modified":"2023-09-05T11:19:22","modified_gmt":"2023-09-05T11:19:22","slug":"windowing","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/cn\/wiki\/windowing\/","title":{"rendered":"\u7a97\u53e3\u5316"},"content":{"rendered":"<p>\u7a97\u53e3\u5316\u662f\u4e00\u79cd\u7528\u4e8e\u4f18\u5316\u6570\u636e\u4f20\u8f93\u548c\u63d0\u9ad8\u901a\u4fe1\u7f51\u7edc\uff08\u5305\u62ec\u4ee3\u7406\u670d\u52a1\u5668\uff09\u6027\u80fd\u7684\u6280\u672f\u3002\u5b83\u901a\u8fc7\u63a7\u5236\u53cc\u5411\u901a\u4fe1\u901a\u9053\u4e2d\u7684\u6570\u636e\u5305\u6d41\uff0c\u5b9e\u73b0\u4e24\u4e2a\u7aef\u70b9\u4e4b\u95f4\u7684\u9ad8\u6548\u6570\u636e\u4ea4\u6362\u3002\u7a97\u53e3\u5316\u5728\u53d1\u9001\u65b9\u548c\u63a5\u6536\u65b9\u4e4b\u95f4\u7684\u5904\u7406\u901f\u5ea6\u6216\u7f51\u7edc\u5e26\u5bbd\u5b58\u5728\u663e\u8457\u5dee\u5f02\u7684\u60c5\u51b5\u4e0b\u7279\u522b\u6709\u7528\u3002<\/p>\n<h2>Windowing 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\u89c4\u8303\u4e2d\u53ef\u4ee5\u627e\u5230\u5bf9\u7a97\u53e3\u5316\u7684\u9996\u6b21\u63d0\u53ca\u3002<\/p>\n<h2>\u6709\u5173\u7a97\u53e3\u7684\u8be6\u7ec6\u4fe1\u606f\u3002\u6269\u5c55\u4e3b\u9898\u7a97\u53e3<\/h2>\n<p>\u5728\u6570\u636e\u4f20\u8f93\u4e2d\uff0c\u7a97\u53e3\u5316\u57fa\u4e8e\u6ed1\u52a8\u7a97\u53e3\u673a\u5236\u7684\u4f7f\u7528\u3002\u53d1\u9001\u65b9\u5c06\u6570\u636e\u5206\u6210\u79f0\u4e3a\u201c\u6570\u636e\u5305\u201d\u7684\u8f83\u5c0f\u6bb5\uff0c\u5e76\u4e3a\u6bcf\u4e2a\u6570\u636e\u5305\u5206\u914d\u4e00\u4e2a\u5e8f\u5217\u53f7\u3002\u63a5\u6536\u65b9\u901a\u8fc7\u53d1\u56de\u5305\u542b\u6240\u63a5\u6536\u6570\u636e\u5305\u5e8f\u5217\u53f7\u7684\u786e\u8ba4\u6570\u636e\u5305 (ACK) \u6765\u786e\u8ba4\u6536\u5230\u8fd9\u4e9b\u6570\u636e\u5305\u3002<\/p>\n<p>\u7a97\u53e3\u5927\u5c0f\u79f0\u4e3a\u201c\u7a97\u53e3\u5927\u5c0f\u201d\u6216\u201c\u62e5\u585e\u7a97\u53e3\u201d\uff0c\u51b3\u5b9a\u4e86\u53d1\u9001\u65b9\u5728\u7b49\u5f85 ACK \u4e4b\u524d\u53ef\u4ee5\u53d1\u9001\u7684\u672a\u786e\u8ba4\u6570\u636e\u5305\u7684\u6570\u91cf\u3002\u6b64\u7a97\u53e3\u5927\u5c0f\u53ef\u4ee5\u6839\u636e\u7f51\u7edc\u72b6\u51b5\u52a8\u6001\u8c03\u6574\uff0c\u4ece\u800c\u5b9e\u73b0\u9ad8\u6548\u7684\u6570\u636e\u6d41\u63a7\u5236\u3002<\/p>\n<p>\u7a97\u53e3\u6709\u51e0\u4e2a\u57fa\u672c\u7528\u9014\uff1a<\/p>\n<ol>\n<li>\n<p><strong>\u6d41\u91cf\u63a7\u5236<\/strong>\uff1a\u901a\u8fc7\u9650\u5236\u4f20\u8f93\u4e2d\u672a\u786e\u8ba4\u7684\u6570\u636e\u5305\u7684\u6570\u91cf\uff0c\u53ef\u4ee5\u9632\u6b62\u53d1\u9001\u65b9\u7528\u8fc7\u591a\u7684\u6570\u636e\u6df9\u6ca1\u63a5\u6536\u65b9\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u62e5\u585e\u63a7\u5236<\/strong>\uff1a\u901a\u8fc7\u52a8\u6001\u8c03\u6574\u7a97\u53e3\u5927\u5c0f\uff0c\u7a97\u53e3\u5316\u6709\u52a9\u4e8e\u907f\u514d\u7f51\u7edc\u62e5\u585e\u5e76\u786e\u4fdd\u516c\u5e73\u7684\u8d44\u6e90\u5206\u914d\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u9519\u8bef\u6062\u590d<\/strong>\uff1a\u5f53\u6570\u636e\u5305\u5728\u4f20\u8f93\u8fc7\u7a0b\u4e2d\u4e22\u5931\u6216\u635f\u574f\u65f6\uff0c\u63a5\u6536\u65b9\u53ef\u4ee5\u4f7f\u7528\u9009\u62e9\u6027\u786e\u8ba4 (SACK) \u8bf7\u6c42\u91cd\u65b0\u4f20\u8f93\u7279\u5b9a\u6570\u636e\u5305\u3002<\/p>\n<\/li>\n<\/ol>\n<h2>\u7a97\u53e3\u5316\u7684\u5185\u90e8\u7ed3\u6784\u3002\u7a97\u53e3\u5316\u5982\u4f55\u5de5\u4f5c<\/h2>\n<p>Windowing 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(SACK)\uff0c\u7a97\u53e3\u5316\u4f7f\u53d1\u9001\u65b9\u80fd\u591f\u4ec5\u91cd\u65b0\u4f20\u8f93\u4e22\u5931\u6216\u635f\u574f\u7684\u6570\u636e\u5305\uff0c\u4ece\u800c\u51cf\u5c11\u4e0d\u5fc5\u8981\u7684\u91cd\u65b0\u4f20\u8f93\u5e76\u8282\u7701\u7f51\u7edc\u8d44\u6e90\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u7f13\u51b2<\/strong>\uff1a\u7a97\u53e3\u5316\u8981\u6c42\u53d1\u9001\u65b9\u548c\u63a5\u6536\u65b9\u7ef4\u62a4\u7f13\u51b2\u533a\u6765\u5b58\u50a8\u548c\u91cd\u65b0\u6392\u5e8f\u65e0\u5e8f\u7684\u6570\u636e\u5305\uff0c\u4ee5\u786e\u4fdd\u6570\u636e\u5b8c\u6574\u6027\u548c\u51c6\u786e\u91cd\u5efa\u3002<\/p>\n<\/li>\n<\/ol>\n<h2>\u7a97\u53e3\u7c7b\u578b<\/h2>\n<p>\u7a97\u53e3\u5316\u6280\u672f\u53ef\u80fd\u56e0\u5176\u5177\u4f53\u5b9e\u73b0\u548c\u7528\u4f8b\u800c\u5f02\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u89c1\u7684\u7a97\u53e3\u5316\u7c7b\u578b\uff1a<\/p>\n<table>\n<thead>\n<tr>\n<th><strong>\u7c7b\u578b<\/strong><\/th>\n<th><strong>\u63cf\u8ff0<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>\u56fa\u5b9a\u7a97\u53e3<\/strong><\/td>\n<td>\u5728\u6574\u4e2a\u6570\u636e\u4f20\u8f93\u8fc7\u7a0b\u4e2d\uff0c\u7a97\u53e3\u5927\u5c0f\u4fdd\u6301\u4e0d\u53d8\u3002<\/td>\n<\/tr>\n<tr>\n<td><strong>\u6ed1\u52a8\u7a97\u53e3<\/strong><\/td>\n<td>\u7a97\u53e3\u5927\u5c0f\u6839\u636e\u7f51\u7edc\u72b6\u51b5\u548c\u62e5\u585e\u7a0b\u5ea6\u52a8\u6001\u8c03\u6574\u3002<\/td>\n<\/tr>\n<tr>\n<td><strong>\u9009\u62e9\u6027\u91cd\u590d<\/strong><\/td>\n<td>\u63a5\u6536\u5668\u5355\u72ec\u786e\u8ba4\u6bcf\u4e2a\u6536\u5230\u7684\u6570\u636e\u5305\uff0c\u4ece\u800c\u5141\u8bb8\u9009\u62e9\u6027\u5730\u91cd\u65b0\u4f20\u8f93\u4e22\u5931\u7684\u6570\u636e\u5305\u3002<\/td>\n<\/tr>\n<tr>\n<td><strong>\u56de\u9000-N<\/strong><\/td>\n<td>\u5982\u679c\u5355\u4e2a\u6570\u636e\u5305\u4e22\u5931\uff0c\u5219\u6240\u6709\u540e\u7eed\u672a\u786e\u8ba4\u7684\u6570\u636e\u5305\u90fd\u4f1a\u88ab\u91cd\u65b0\u4f20\u8f93\u3002<\/td>\n<\/tr>\n<tr>\n<td><strong>\u505c\u6b62\u7b49\u5f85<\/strong><\/td>\n<td>\u6bcf\u4e2a\u6570\u636e\u5305\u90fd\u5355\u72ec\u53d1\u9001\uff0c\u53d1\u9001\u65b9\u7b49\u5f85\u786e\u8ba4\u540e\u518d\u53d1\u9001\u4e0b\u4e00\u4e2a\u6570\u636e\u5305\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u7a97\u53e3\u7684\u4f7f\u7528\u65b9\u6cd5\u3001\u4f7f\u7528\u8fc7\u7a0b\u4e2d\u51fa\u73b0\u7684\u95ee\u9898\u53ca\u89e3\u51b3\u65b9\u6cd5<\/h2>\n<p>\u7a97\u53e3\u5316\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5404\u79cd\u7f51\u7edc\u901a\u4fe1\u573a\u666f\uff0c\u5305\u62ec\u7f51\u9875\u6d4f\u89c8\u3001\u6587\u4ef6\u4f20\u8f93\u3001\u89c6\u9891\u6d41\u7b49\u3002\u7136\u800c\uff0c\u7a97\u53e3\u5316\u4e5f\u5b58\u5728\u4e00\u4e9b\u6311\u6218\uff1a<\/p>\n<ol>\n<li>\n<p><strong>\u6f5c\u4f0f<\/strong>\uff1a\u8f83\u5927\u7684\u7a97\u53e3\u5927\u5c0f\u4f1a\u5bfc\u81f4\u5ef6\u8fdf\u589e\u52a0\uff0c\u5c24\u5176\u662f\u5728\u9ad8\u5ef6\u8fdf\u7f51\u7edc\u4e2d\u3002\u89e3\u51b3\u65b9\u6848\u5305\u62ec\u4f18\u5316\u7a97\u53e3\u5927\u5c0f\u548c\u4f7f\u7528\u62e5\u585e\u63a7\u5236\u7b97\u6cd5\uff0c\u5982 TCP \u7684\u62e5\u585e\u7a97\u53e3\u63a7\u5236\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u65e0\u5e8f\u4ea4\u4ed8<\/strong>\uff1a\u7f51\u7edc\u72b6\u51b5\u53ef\u80fd\u5bfc\u81f4\u6570\u636e\u5305\u65e0\u5e8f\u5230\u8fbe\u63a5\u6536\u65b9\u3002\u89e3\u51b3\u65b9\u6848\u5305\u62ec\u5728\u63a5\u6536\u65b9\u7aef\u4f7f\u7528\u6570\u636e\u5305\u91cd\u65b0\u6392\u5e8f\u6280\u672f\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u7a97\u53e3\u5927\u5c0f\u9009\u62e9<\/strong>\uff1a\u9009\u62e9\u6700\u4f73\u7a97\u53e3\u5927\u5c0f\u5bf9\u4e8e\u9ad8\u6548\u6570\u636e\u4f20\u8f93\u81f3\u5173\u91cd\u8981\u3002TCP \u7684 Slow-Start \u7b49\u7b97\u6cd5\u6709\u52a9\u4e8e\u786e\u5b9a\u5408\u9002\u7684\u521d\u59cb\u7a97\u53e3\u5927\u5c0f\u3002<\/p>\n<\/li>\n<\/ol>\n<h2>\u4e3b\u8981\u7279\u70b9\u53ca\u4e0e\u540c\u7c7b\u672f\u8bed\u7684\u5176\u4ed6\u6bd4\u8f83<\/h2>\n<table>\n<thead>\n<tr>\n<th><strong>\u7279\u5f81<\/strong><\/th>\n<th><strong>\u4e0eGo-Back-N\u7684\u6bd4\u8f83<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>\u91cd\u4f20\u6548\u7387<\/strong><\/td>\n<td>\u66f4\u9ad8\u6548\uff0c\u4ec5\u91cd\u65b0\u4f20\u8f93\u4e22\u5931\u7684\u6570\u636e\u5305\uff08SACK\uff09\u3002<\/td>\n<\/tr>\n<tr>\n<td><strong>\u7f13\u51b2\u8981\u6c42<\/strong><\/td>\n<td>\u9700\u8981\u66f4\u5927\u7684\u7f13\u51b2\u533a\u6765\u5b58\u50a8\u65e0\u5e8f\u6570\u636e\u5305\u3002<\/td>\n<\/tr>\n<tr>\n<td><strong>\u7f51\u7edc\u5229\u7528\u7387<\/strong><\/td>\n<td>\u7531\u4e8e\u9009\u62e9\u6027\u91cd\u4f20\u800c\u6548\u7387\u66f4\u9ad8\u3002<\/td>\n<\/tr>\n<tr>\n<td><strong>\u590d\u6742<\/strong><\/td>\n<td>\u7531\u4e8e\u9009\u62e9\u6027\u786e\u8ba4\u800c\u7565\u9ad8\u3002<\/td>\n<\/tr>\n<tr>\n<td><strong>\u541e\u5410\u91cf<\/strong><\/td>\n<td>\u7531\u4e8e\u81ea\u9002\u5e94\u7a97\u53e3\u5927\u5c0f\uff0c\u53ef\u80fd\u66f4\u9ad8\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u4e0e\u7a97\u53e3\u76f8\u5173\u7684\u672a\u6765\u89c2\u70b9\u548c\u6280\u672f<\/h2>\n<p>\u968f\u7740\u7f51\u7edc\u7684\u4e0d\u65ad\u53d1\u5c55\uff0c\u7a97\u53e3\u6280\u672f\u53ef\u80fd\u4f1a\u8fdb\u4e00\u6b65\u53d1\u5c55\uff0c\u4ee5\u5e94\u5bf9\u65b0\u5174\u6280\u672f\u5e26\u6765\u7684\u6311\u6218\u3002\u672a\u6765\u4e00\u4e9b\u6f5c\u5728\u7684\u53d1\u5c55\u5305\u62ec\uff1a<\/p>\n<ol>\n<li>\n<p><strong>\u57fa\u4e8e\u673a\u5668\u5b66\u4e60\u7684\u62e5\u585e\u63a7\u5236<\/strong>\uff1a\u53ef\u4ee5\u91c7\u7528\u4eba\u5de5\u667a\u80fd\u548c\u673a\u5668\u5b66\u4e60\u6280\u672f\u6765\u4f18\u5316\u7a97\u53e3\u5927\u5c0f\u9009\u62e9\u548c\u62e5\u585e\u63a7\u5236\uff0c\u4ece\u800c\u5b9e\u73b0\u66f4\u5177\u81ea\u9002\u5e94\u6027\u548c\u6548\u7387\u7684\u7a97\u53e3\u673a\u5236\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u591a\u8def\u5f84\u7a97\u53e3<\/strong>\uff1a\u968f\u7740\u73b0\u4ee3\u7f51\u7edc\u4e2d\u591a\u5f84\u4f20\u8f93\u7684\u4f7f\u7528\u8d8a\u6765\u8d8a\u591a\uff0c\u672a\u6765\u7684\u7a97\u53e3\u534f\u8bae\u53ef\u80fd\u4f1a\u5229\u7528\u591a\u6761\u8def\u5f84\u6765\u589e\u5f3a\u6027\u80fd\u548c\u53ef\u9760\u6027\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u7269\u8054\u7f51\u548c\u7a97\u53e3<\/strong>\uff1a\u968f\u7740\u7269\u8054\u7f51 (IoT) 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OneProxy (oneproxy.pro) \u8fd9\u6837\u7684\u4ee3\u7406\u670d\u52a1\u5668\u63d0\u4f9b\u5546\u6765\u8bf4\u5c24\u5176\u91cd\u8981\uff0c\u56e0\u4e3a\u5b83\u5141\u8bb8\u4ed6\u4eec\u5411\u5ba2\u6237\u63d0\u4f9b\u65e0\u7f1d\u4e14\u9ad8\u6027\u80fd\u7684\u4ee3\u7406\u670d\u52a1\u3002<\/p>\n<h2>\u76f8\u5173\u94fe\u63a5<\/h2>\n<p>\u6709\u5173\u7a97\u53e3\u5316\u7684\u66f4\u591a\u4fe1\u606f\uff0c\u53ef\u4ee5\u53c2\u8003\u4ee5\u4e0b\u8d44\u6e90\uff1a<\/p>\n<ul>\n<li><a href=\"https:\/\/tools.ietf.org\/html\/rfc793\" target=\"_new\" rel=\"noopener nofollow\">RFC 793\uff1a\u4f20\u8f93\u63a7\u5236\u534f\u8bae<\/a><\/li>\n<li><a href=\"https:\/\/tools.ietf.org\/html\/rfc2018\" target=\"_new\" rel=\"noopener nofollow\">RFC 2018\uff1aTCP \u9009\u62e9\u6027\u786e\u8ba4\u9009\u9879<\/a><\/li>\n<li><a href=\"https:\/\/tools.ietf.org\/html\/rfc2581\" target=\"_new\" rel=\"noopener nofollow\">RFC 2581\uff1aTCP \u62e5\u585e\u63a7\u5236<\/a><\/li>\n<li><a href=\"https:\/\/www.multipath-tcp.org\/\" target=\"_new\" rel=\"noopener nofollow\">\u591a\u8def\u5f84 TCP<\/a><\/li>\n<\/ul>","protected":false},"featured_media":479679,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-479678","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Windowing: Enhancing Proxy Server Performance<\/mark>","faq_items":[{"question":"What is Windowing and how does it enhance proxy server performance?","answer":"<p>Windowing is a data transmission technique used to optimize communication networks, including proxy servers. It controls the flow of data between two endpoints, allowing for efficient exchange and improving performance. With Windowing, proxy servers can manage bandwidth usage, minimize latency, and deliver a smoother browsing experience for users.<\/p>"},{"question":"When and where was Windowing first introduced?","answer":"<p>The concept of Windowing can be traced back to the early days of computer networking and the development of the Transmission Control Protocol (TCP). It was first mentioned in the specifications of TCP outlined in RFC 793, published in September 1981.<\/p>"},{"question":"What are the key features of Windowing?","answer":"<p>The key features of Windowing include adaptive transmission, efficient bandwidth utilization, selective retransmission for error recovery, and the need for buffering to maintain data integrity and order.<\/p>"},{"question":"What types of Windowing techniques exist?","answer":"<p>Several types of Windowing techniques are commonly used:<\/p><ol><li>Fixed Window: The window size remains constant throughout data transmission.<\/li><li>Sliding Window: The window size dynamically adjusts based on network conditions and congestion levels.<\/li><li>Selective Repeat: Allows selective retransmission of lost packets based on individual acknowledgments.<\/li><li>Go-Back-N: Retransmits subsequent unacknowledged packets if one packet is lost.<\/li><li>Stop-and-Wait: Each packet is individually sent, and the sender waits for acknowledgment before sending the next packet.<\/li><\/ol>"},{"question":"How can Windowing be used in conjunction with proxy servers?","answer":"<p>Proxy servers can leverage Windowing to optimize data transmission between clients and servers. By controlling data flow, Windowing helps manage bandwidth usage, reduce latency, and ensure a smoother browsing experience for users. Proxy server providers like OneProxy can deliver seamless and high-performance services using this technique.<\/p>"},{"question":"What are the challenges associated with Windowing?","answer":"<p>Some challenges related to Windowing include latency, out-of-order delivery of packets, and selecting an optimal window size. Solutions involve optimizing the window size, implementing packet reordering techniques, and using congestion control algorithms like TCP's congestion window control.<\/p>"},{"question":"What are the future perspectives and technologies related to Windowing?","answer":"<p>The future of Windowing may see advancements in machine learning-based congestion control, multipath Windowing to take advantage of multiple transmission paths, and tailored Windowing techniques for the Internet of Things (IoT) devices with constrained resources.<\/p>"},{"question":"Where can I find more information about Windowing?","answer":"<p>For more in-depth knowledge about Windowing, you can refer to the following resources:<\/p><ul><li>RFC 793: Transmission Control Protocol<\/li><li>RFC 2018: TCP Selective Acknowledgment Options<\/li><li>RFC 2581: TCP Congestion Control<\/li><li>Multipath TCP website (<a href=\"https:\/\/www.multipath-tcp.org\/\" target=\"_new\">https:\/\/www.multipath-tcp.org\/<\/a>)<\/li><\/ul>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/wiki\/479678","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/wiki\/479678\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/media\/479679"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/media?parent=479678"}],"curies":[{"name":"\u53ef\u6e7f\u6027\u7c89\u5242","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}