{"id":1255,"date":"2025-09-16T01:20:22","date_gmt":"2025-09-15T17:20:22","guid":{"rendered":"https:\/\/www.vcidc.net\/blog\/?p=1255"},"modified":"2025-09-16T01:20:22","modified_gmt":"2025-09-15T17:20:22","slug":"udp%e6%98%af%e4%bb%80%e4%b9%88%e6%84%8f%e6%80%9d","status":"publish","type":"post","link":"https:\/\/www.vcidc.net\/blog\/1255.html","title":{"rendered":"UDP\u662f\u4ec0\u4e48\u610f\u601d"},"content":{"rendered":"<p><h3>UDP\u662f\u4ec0\u4e48\u610f\u601d<\/h3>\n<\/p>\n<p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/www.vcidc.net\/blog\/wp-content\/uploads\/2025\/07\/d48IQ2Z5nu.jpg\" alt=\"UDP\u662f\u4ec0\u4e48\u610f\u601d\" title=\"UDP\u662f\u4ec0\u4e48\u610f\u601d\"><\/p>\n<p><p>UDP\uff08User Datagram Protocol\uff0c\u7528\u6237\u6570\u636e\u62a5\u534f\u8bae\uff09\u662f\u4e00\u79cd\u65e0\u8fde\u63a5\u7684\u4f20\u8f93\u5c42\u534f\u8bae\uff0c\u7528\u4e8e\u5728\u4e92\u8054\u7f51\u4e0a\u4f20\u8f93\u6570\u636e\u3002\u5b83\u4e3b\u8981\u7528\u4e8e\u90a3\u4e9b\u5bf9\u6570\u636e\u4f20\u8f93\u901f\u5ea6\u8981\u6c42\u8f83\u9ad8\uff0c\u4f46\u4e0d\u592a\u5173\u5fc3\u6570\u636e\u5b8c\u6574\u6027\u548c\u53ef\u9760\u6027\u7684\u5e94\u7528\u573a\u666f\u3002<\/p>\n<\/p>\n<p><h3>UDP\u5305\u542b\u591a\u5c11\u5185\u5bb9<\/h3>\n<\/p>\n<p><p>UDP\u6570\u636e\u5305\u5305\u542b\u4ee5\u4e0b\u5185\u5bb9\uff1a<\/p>\n<\/p>\n<ul>\n<li>\u6e90\u7aef\u53e3\u53f7\uff1a\u6807\u8bc6\u53d1\u9001\u6570\u636e\u5305\u7684\u5e94\u7528\u7a0b\u5e8f\u3002<\/li>\n<li>\u76ee\u6807\u7aef\u53e3\u53f7\uff1a\u6807\u8bc6\u63a5\u6536\u6570\u636e\u5305\u7684\u5e94\u7528\u7a0b\u5e8f\u3002<\/li>\n<li>\u6570\u636e\u957f\u5ea6\uff1a\u6570\u636e\u90e8\u5206\u7684\u957f\u5ea6\u3002<\/li>\n<li>\u6821\u9a8c\u548c\uff1a\u7528\u4e8e\u68c0\u6d4b\u6570\u636e\u5728\u4f20\u8f93\u8fc7\u7a0b\u4e2d\u662f\u5426\u53d1\u751f\u9519\u8bef\u3002<\/li>\n<\/ul>\n<p><h3>UDP\u7684\u54ea\u4e2a\u90e8\u5206\u5982\u4f55\u5de5\u4f5c<\/h3>\n<\/p>\n<p><p>UDP\u7684\u6821\u9a8c\u548c\u90e8\u5206\u662f\u5982\u4f55\u5de5\u4f5c\u7684\uff1a<\/p>\n<\/p>\n<p><pre><code>\u6821\u9a8c\u548c\u662f\u4e00\u4e2a32\u4f4d\u7684\u503c\uff0c\u901a\u8fc7\u5bf9UDP\u6570\u636e\u5305\u7684\u6240\u670916\u4f4d\u90e8\u5206\u8fdb\u884c\u5f02\u6216\u8fd0\u7b97\u5f97\u5230\u3002\u7136\u540e\uff0c\u5c06\u5f97\u5230\u7684\u503c\u518d\u6b21\u8fdb\u884c\u5f02\u6216\u8fd0\u7b97\uff0c\u5f97\u5230\u6700\u7ec8\u7684\u6821\u9a8c\u548c\u3002\u63a5\u6536\u65b9\u5728\u63a5\u6536\u5230\u6570\u636e\u5305\u540e\uff0c\u4e5f\u4f1a\u8fdb\u884c\u76f8\u540c\u7684\u8ba1\u7b97\uff0c\u5982\u679c\u8ba1\u7b97\u51fa\u7684\u6821\u9a8c\u548c\u4e0e\u53d1\u9001\u65b9\u7684\u4e00\u81f4\uff0c\u5219\u8ba4\u4e3a\u6570\u636e\u5305\u5728\u4f20\u8f93\u8fc7\u7a0b\u4e2d\u672a\u53d1\u751f\u9519\u8bef\u3002<\/code><\/pre>\n<\/p>\n<p><h3>\u63a8\u8350\u4f7f\u7528UDP\u7684\u573a\u666f<\/h3>\n<\/p>\n<p><p>\u4ee5\u4e0b\u573a\u666f\u63a8\u8350\u4f7f\u7528UDP\uff1a<\/p>\n<\/p>\n<ul>\n<li>\u5b9e\u65f6\u89c6\u9891\u548c\u97f3\u9891\u4f20\u8f93\uff1a\u5982\u89c6\u9891\u4f1a\u8bae\u3001\u5728\u7ebf\u6e38\u620f\u7b49\u3002<\/li>\n<li>\u5b9e\u65f6\u6570\u636e\u4f20\u8f93\uff1a\u5982\u80a1\u7968\u4ea4\u6613\u3001\u5728\u7ebf\u76d1\u63a7\u7b49\u3002<\/li>\n<li>\u4e0d\u9700\u8981\u53ef\u9760\u4f20\u8f93\u7684\u5e94\u7528\uff1a\u5982DNS\u67e5\u8be2\u3001NTP\u65f6\u95f4\u540c\u6b65\u7b49\u3002<\/li>\n<\/ul>\n<p><h3>\u4e3a\u4ec0\u4e48\u9009\u62e9UDP\u800c\u4e0d\u662fTCP<\/h3>\n<\/p>\n<p><p>\u9009\u62e9UDP\u800c\u4e0d\u662fTCP\u7684\u539f\u56e0\uff1a<\/p>\n<\/p>\n<ul>\n<li>UDP\u662f\u65e0\u8fde\u63a5\u7684\uff0c\u4e0d\u9700\u8981\u5efa\u7acb\u8fde\u63a5\u548c\u5173\u95ed\u8fde\u63a5\uff0c\u56e0\u6b64\u4f20\u8f93\u901f\u5ea6\u66f4\u5feb\u3002<\/li>\n<li>UDP\u4e0d\u4fdd\u8bc1\u6570\u636e\u5305\u7684\u987a\u5e8f\uff0c\u4f46\u53ef\u4ee5\u7531\u4e0a\u5c42\u5e94\u7528\u81ea\u884c\u5904\u7406\u3002<\/li>\n<li>UDP\u4e0d\u8fdb\u884c\u9519\u8bef\u91cd\u4f20\uff0c\u51cf\u5c11\u4e86\u6570\u636e\u5305\u7684\u5ef6\u8fdf\u3002<\/li>\n<\/ul>\n<p><h3>UDP\u7684\u4f18\u7f3a\u70b9<\/h3>\n<\/p>\n<p><p>UDP\u7684\u4f18\u70b9\uff1a<\/p>\n<\/p>\n<ul>\n<li>\u4f20\u8f93\u901f\u5ea6\u5feb\u3002<\/li>\n<li>\u5ef6\u8fdf\u4f4e\u3002<\/li>\n<li>\u9002\u7528\u4e8e\u5b9e\u65f6\u5e94\u7528\u3002<\/li>\n<\/ul>\n<p><p>UDP\u7684\u7f3a\u70b9\uff1a<\/p>\n<\/p>\n<ul>\n<li>\u4e0d\u4fdd\u8bc1\u6570\u636e\u5305\u7684\u987a\u5e8f\u3002<\/li>\n<li>\u4e0d\u4fdd\u8bc1\u6570\u636e\u5305\u7684\u53ef\u9760\u6027\u3002<\/li>\n<li>\u4e0d\u63d0\u4f9b\u6d41\u91cf\u63a7\u5236\u3002<\/li>\n<\/ul>\n<p><h3>\u5982\u4f55\u4f7f\u7528UDP\u8fdb\u884c\u901a\u4fe1<\/h3>\n<\/p>\n<p><p>\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684UDP\u901a\u4fe1\u793a\u4f8b\uff1a<\/p>\n<\/p>\n<p><pre><code>import socket<\/p>\r\n\r\n<p> \u521b\u5efaUDP\u5957\u63a5\u5b57<\/p>\r\n<p>sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)<\/p>\r\n\r\n<p> \u8bbe\u7f6e\u670d\u52a1\u5668\u5730\u5740\u548c\u7aef\u53e3<\/p>\r\n<p>server_address = ('localhost', 10000)<\/p>\r\n\r\n<p> \u53d1\u9001\u6570\u636e<\/p>\r\n<p>message = b'This is a UDP message.'<\/p>\r\n<p>sock.sendto(message, server_address)<\/p>\r\n\r\n<p> \u63a5\u6536\u6570\u636e<\/p>\r\n<p>data, server = sock.recvfrom(4096)<\/p>\r\n<p>print('Received:', data.decode())<\/p>\r\n\r\n<p> \u5173\u95ed\u5957\u63a5\u5b57<\/p>\r\n<p>sock.close()<\/p>\r\n<p><\/code><\/pre>\n<\/p>\n<p><h3>UDP\u4e0e\u5176\u4ed6\u534f\u8bae\u7684\u6bd4\u8f83<\/h3>\n<\/p>\n<p><p>UDP\u4e0eTCP\u7684\u6bd4\u8f83\uff1a<\/p>\n<\/p>\n<ul>\n<li>UDP\u662f\u65e0\u8fde\u63a5\u7684\uff0c\u800cTCP\u662f\u9762\u5411\u8fde\u63a5\u7684\u3002<\/li>\n<li>UDP\u4e0d\u4fdd\u8bc1\u6570\u636e\u5305\u7684\u987a\u5e8f\uff0c\u800cTCP\u4fdd\u8bc1\u6570\u636e\u5305\u7684\u987a\u5e8f\u3002<\/li>\n<li>UDP\u4e0d\u63d0\u4f9b\u6d41\u91cf\u63a7\u5236\uff0c\u800cTCP\u63d0\u4f9b\u6d41\u91cf\u63a7\u5236\u3002<\/li>\n<\/ul>\n<p><h3>UDP\u5728\u670d\u52a1\u5668\u4e2d\u7684\u5e94\u7528<\/h3>\n<\/p>\n<p><p>UDP\u5728\u670d\u52a1\u5668\u4e2d\u7684\u5e94\u7528\u573a\u666f\uff1a<\/p>\n<\/p>\n<ul>\n<li>\u5b9e\u65f6\u89c6\u9891\u548c\u97f3\u9891\u4f20\u8f93\u670d\u52a1\u5668\u3002<\/li>\n<li>\u5728\u7ebf\u6e38\u620f\u670d\u52a1\u5668\u3002<\/li>\n<li>\u80a1\u7968\u4ea4\u6613\u670d\u52a1\u5668\u3002<\/li>\n<\/ul>\n<p><h3>UDP\u7684\u5e38\u89c1\u95ee\u9898<\/h3>\n<\/p>\n<p><p><b>\u95ee\u98981\uff1aUDP\u4e0eTCP\u6709\u4ec0\u4e48\u533a\u522b\uff1f<\/b><\/p>\n<\/p>\n<p><p>UDP\u4e0eTCP\u7684\u4e3b\u8981\u533a\u522b\u5728\u4e8e\u8fde\u63a5\u65b9\u5f0f\u3001\u6570\u636e\u5305\u987a\u5e8f\u3001\u53ef\u9760\u6027\u7b49\u65b9\u9762\u3002UDP\u662f\u65e0\u8fde\u63a5\u7684\uff0c\u4e0d\u4fdd\u8bc1\u6570\u636e\u5305\u7684\u987a\u5e8f\u548c\u53ef\u9760\u6027\uff0c\u800cTCP\u662f\u9762\u5411\u8fde\u63a5\u7684\uff0c\u4fdd\u8bc1\u6570\u636e\u5305\u7684\u987a\u5e8f\u548c\u53ef\u9760\u6027\u3002<\/p>\n<\/p>\n<p><p><b>\u95ee\u98982\uff1aUDP\u9002\u7528\u4e8e\u54ea\u4e9b\u573a\u666f\uff1f<\/b><\/p>\n<\/p>\n<p><p>UDP\u9002\u7528\u4e8e\u5b9e\u65f6\u89c6\u9891\u548c\u97f3\u9891\u4f20\u8f93\u3001\u5b9e\u65f6\u6570\u636e\u4f20\u8f93\u3001\u4e0d\u9700\u8981\u53ef\u9760\u4f20\u8f93\u7684\u5e94\u7528\u7b49\u573a\u666f\u3002<\/p>\n<\/p>\n<p><p><b>\u95ee\u98983\uff1aUDP\u7684\u4f20\u8f93\u901f\u5ea6\u5982\u4f55\uff1f<\/b><\/p>\n<\/p>\n<p><p>UDP\u7684\u4f20\u8f93\u901f\u5ea6\u8f83\u5feb\uff0c\u56e0\u4e3a\u5b83\u4e0d\u8fdb\u884c\u8fde\u63a5\u5efa\u7acb\u548c\u5173\u95ed\uff0c\u4e5f\u4e0d\u8fdb\u884c\u9519\u8bef\u91cd\u4f20\uff0c\u51cf\u5c11\u4e86\u6570\u636e\u5305\u7684\u5ef6\u8fdf\u3002<\/p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>UDP\u662f\u4ec0\u4e48\u610f\u601d UDP\uff08User Datagram Protocol\uff0c\u7528\u6237\u6570\u636e\u62a5\u534f\u8bae\uff09\u662f\u4e00\u79cd\u65e0\u8fde\u63a5\u7684\u4f20\u8f93\u5c42\u534f\u8bae\uff0c\u7528\u4e8e\u5728\u4e92\u8054\u7f51\u4e0a\u4f20\u8f93\u6570\u636e\u3002\u5b83\u4e3b\u8981\u7528\u4e8e\u90a3\u4e9b\u5bf9\u6570\u636e\u4f20\u8f93\u901f\u5ea6\u8981\u6c42\u8f83\u9ad8\uff0c\u4f46\u4e0d\u592a\u5173\u5fc3\u6570\u636e\u5b8c\u6574\u6027\u548c\u53ef\u9760\u6027\u7684\u5e94\u7528\u573a\u666f\u3002 UDP\u5305\u542b\u591a\u5c11\u5185\u5bb9 U&#8230;<\/p>\n","protected":false},"author":1,"featured_media":1256,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[452,296,453],"topic":[],"class_list":["post-1255","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-foreign-server","tag-udp","tag-296","tag-453"],"_links":{"self":[{"href":"https:\/\/www.vcidc.net\/blog\/wp-json\/wp\/v2\/posts\/1255","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vcidc.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vcidc.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vcidc.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vcidc.net\/blog\/wp-json\/wp\/v2\/comments?post=1255"}],"version-history":[{"count":1,"href":"https:\/\/www.vcidc.net\/blog\/wp-json\/wp\/v2\/posts\/1255\/revisions"}],"predecessor-version":[{"id":1258,"href":"https:\/\/www.vcidc.net\/blog\/wp-json\/wp\/v2\/posts\/1255\/revisions\/1258"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.vcidc.net\/blog\/wp-json\/wp\/v2\/media\/1256"}],"wp:attachment":[{"href":"https:\/\/www.vcidc.net\/blog\/wp-json\/wp\/v2\/media?parent=1255"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vcidc.net\/blog\/wp-json\/wp\/v2\/categories?post=1255"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vcidc.net\/blog\/wp-json\/wp\/v2\/tags?post=1255"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/www.vcidc.net\/blog\/wp-json\/wp\/v2\/topic?post=1255"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}