{"id":81441,"date":"2026-07-25T02:01:04","date_gmt":"2026-07-24T18:01:04","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/81441.html"},"modified":"2026-07-25T02:01:04","modified_gmt":"2026-07-24T18:01:04","slug":"udp-%e5%92%8c-tcp-%e7%bd%91%e7%bb%9c%e7%9f%a5%e8%af%86%e5%92%8cudp%e5%8d%8f%e8%ae%ae%e7%9a%84%e5%9b%9e%e5%a3%b0%e6%9c%8d%e5%8a%a1%e5%99%a8%e8%af%a6%e7%bb%86%e5%89%96%e6%9e%90","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/81441.html","title":{"rendered":"UDP \u548c TCP \u7f51\u7edc\u77e5\u8bc6\u548c\u201cUdp\u534f\u8bae\u7684\u56de\u58f0\u670d\u52a1\u5668\u8be6\u7ec6\u5256\u6790\u201d\uff085000\u5b57\u8be6\u7ec6\u89e3\u6790\u56de\u5347\u670d\u52a1\u5668\u7684\u70b9\u70b9\u6ef4\u6ef4\uff09\uff08\u7f51\u7edc\u7f16\u7a0b01\uff09"},"content":{"rendered":"<p>\u76ee\u5f55<\/p>\n<p style=\"margin-left:0px\">\n<p style=\"margin-left:0px\">\u5e94\u7528\u5c42<\/p>\n<p style=\"margin-left:0px\">\u4e00\u3001\u4f20\u8f93\u5c42\u7684\u4e24\u4e2a\u6838\u5fc3\u534f\u8bae<\/p>\n<p style=\"margin-left:0px\">\u4e8c\u3001\u6709\u94fe\u63a5\/\u65e0\u8fde\u63a5&#xff08;\u662f\u62bd\u8c61\u7684\u6982\u5ff5&#xff0c;\u662f\u865a\u62df\u7684\/\u903b\u8f91\u4e0a\u7684\u8fde\u63a5&#xff09;&#xff0c;\u4f8b\u5982\u8981\u8fdb\u884c\u7f51\u7edc\u901a\u4fe1&#xff0c;\u7269\u7406\u4e0a\u7684\u8fde\u63a5&#xff08;\u7f51\u7ebf\u5565\u7684&#xff09;<\/p>\n<p style=\"margin-left:0px\">\u4e09\u3001\u53ef\u9760\u4f20\u8f93 vs \u4e0d\u53ef\u9760\u4f20\u8f93<\/p>\n<p style=\"margin-left:0px\">\u56db\u3001\u9762\u5411\u5b57\u8282\u6d41 vs \u9762\u5411\u6570\u636e\u62a5<\/p>\n<p style=\"margin-left:0px\">\u4e94\u3001\u5168\u53cc\u516c vs \u534a\u53cc\u5de5<\/p>\n<p style=\"margin-left:0px\">\u516d\u3001\u56de\u5347\u670d\u52a1\u5668&#xff08;\u91cd\u70b9&#xff09;<\/p>\n<hr \/>\n<h2>\u5e94\u7528\u5c42<\/h2>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u64cd\u4f5c\u7cfb\u7edf\u63d0\u4f9b\u7684\u4e00\u7ec4 API &#061;&gt; socket API (\u4f20\u8f93\u5c42\u7ed9\u5e94\u7528\u5c42\u63d0\u4f9b)&#xff1b;socket \u8fd9\u4e2a\u8bcd\u7684\u610f\u601d\u662f\u63d2\u69fd\u7684\u610f\u601d&#xff0c;\u5bf9\u5e94\u5728\u4e3b\u677f\u4e0a\u53ef\u4ee5\u7406\u89e3\u4e3a\u4e3b\u677f\u4e0a\u7684\u4e00\u4e9b\u63a5\u53e3\u3002<\/p>\n<h2>\u4e00\u3001\u4f20\u8f93\u5c42\u7684\u4e24\u4e2a\u6838\u5fc3\u534f\u8bae<\/h2>\n<p>TCP\u534f\u8bae \u548c UDP\u534f\u8bae\u8fd9\u4e24\u4e2a\u5dee\u522b\u975e\u5e38\u5927\u3002<\/p>\n<ul>\n<li>TCP \u662f\u6709\u8fde\u63a5&#xff0c;\u53ef\u9760\u4f20\u8f93&#xff0c;\u9762\u5411\u5b57\u8282\u6d41&#xff0c;\u5168\u53cc\u5de5<\/li>\n<li>UDP \u662f\u65e0\u8fde\u63a5&#xff0c;\u4e0d\u53ef\u9760\u4f20\u8f93&#xff0c;\u9762\u5411\u6570\u636e\u62a5&#xff0c;\u5168\u53cc\u5de5<\/li>\n<\/ul>\n<h2>\u4e8c\u3001\u6709\u94fe\u63a5\/\u65e0\u8fde\u63a5&#xff08;\u662f\u62bd\u8c61\u7684\u6982\u5ff5&#xff0c;\u662f\u865a\u62df\u7684\/\u903b\u8f91\u4e0a\u7684\u8fde\u63a5&#xff09;&#xff0c;\u4f8b\u5982\u8981\u8fdb\u884c\u7f51\u7edc\u901a\u4fe1&#xff0c;\u7269\u7406\u4e0a\u7684\u8fde\u63a5&#xff08;\u7f51\u7ebf\u5565\u7684&#xff09;<\/h2>\n<ul>\n<li>\u4e3a\u4ec0\u4e48TCP \u662f\u53ef\u9760\u7684\u4f20\u8f93&#xff08;\u6709\u94fe\u63a5&#xff09;&#xff0c;\u800c UDP \u662f\u4e0d\u53ef\u9760\u4f20\u8f93&#xff08;\u65e0\u8fde\u63a5&#xff09;\u3002<\/li>\n<\/ul>\n<p>\u5bf9\u4e8e TCP \u6765\u8bf4&#xff0c;TCP \u534f\u8bae\u4e2d&#xff0c;\u5c31\u4f1a\u4fdd\u5b58\u5bf9\u7aef\u7684\u4fe1\u606f&#xff0c;\u4f8b\u5982 A\u548cB\u901a\u4fe1&#xff0c;A\u548cB\u5148\u5efa\u7acb\u8fde\u63a5&#xff0c;\u8ba9A\u4fdd\u5b58B\u7684\u4fe1\u606f&#xff0c;B\u4fdd\u5b58A\u7684\u4fe1\u606f&#xff08;\u5f7c\u6b64\u4e4b\u95f4\u77e5\u9053&#xff0c;\u8c01\u662f\u548c\u5b83\u8fde\u63a5\u7684\u54ea\u4e2a&#xff09;\u3002<\/p>\n<p>\u5bf9\u4e8eUDP\u6765\u8bf4&#xff0c;UDP\u534f\u8bae\u672c\u8eab&#xff0c;\u4e0d\u4fdd\u5b58\u5bf9\u65b9\u7684\u4fe1\u606f\u3002\u5c31\u662f\u65e0\u8fde\u63a5 \u3002<\/p>\n<h2>\u4e09\u3001\u53ef\u9760\u4f20\u8f93 vs \u4e0d\u53ef\u9760\u4f20\u8f93<\/h2>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u7f51\u7edc\u4e0a\u6570\u636e\u662f\u975e\u5e38\u5bb9\u6613\u51fa\u73b0\u4e22\u5931\u7684\u60c5\u51b5&#xff08;\u4e22\u5305&#xff09;&#xff0c;\u56e0\u4e3a\u5149\u4fe1\u53f7\/\u7535\u4fe1\u53f7&#xff0c;\u90fd\u53ef\u80fd\u53d7\u5230\u5916\u754c\u7684\u5e72\u6270\u3002\u672c\u6765\u662f\u4f20\u8f930101&#xff0c;\u4f46\u662f\u56e0\u4e3a\u6570\u636e\u7684\u4e22\u5305&#xff0c;\u5176\u4e2d\u6709\u4e9bbit\u4f4d\u5c31\u88ab\u4fee\u6539\u4e86&#xff0c;\u8fd9\u6837\u4e71\u4e86\u7684\u6570\u636e\u5c31\u4f1a\u88ab\u8bc6\u522b\u51fa\u6765&#xff0c;\u628a\u8fd9\u6837\u7684\u6570\u636e\u6781\u53ef\u80fd\u4f20\u8f93\u4e0d\u5230\u539f\u6765\u7684\u5730\u65b9\u3002<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u800c\u4e14\u7f51\u7edc\u4e16\u754c\u662f\u901a\u8fc7 \u8def\u7531\u5668\/\u4ea4\u6362\u673a \u6765\u8fdb\u884c\u8054\u7edc\u7684&#xff0c;\u8def\u7531\u5668\/\u4ea4\u6362\u673a \u7c7b\u4f3c\u4e8e\u201c\u5341\u5b57\u8def\u53e3\u201d&#xff0c;\u5b83\u4e5f\u4f1a\u53d1\u751f\u6211\u4eec\u751f\u6d3b\u4e2d\u5341\u5b57\u8def\u53e3\u5835\u8f66\u7684\u60c5\u51b5&#xff0c;&#xff08;\u5728\u67d0\u4e2a\u65f6\u95f4\u70b9&#xff0c;\u5b9e\u9645\u9700\u8981\u8f6c\u53d1\u7684\u6570\u636e\u8d85\u8fc7\u4e86\u8bbe\u5907\u80fd\u8f6c\u53d1\u7684\u4e0a\u7ebf&#xff09;&#xff0c;\u5c31\u4f1a\u5bb9\u6613\u53d1\u751f\u6570\u636e\u4e22\u5305\u95ee\u9898\u3002<\/p>\n<ul>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u53ef\u9760\u4f20\u8f93\u7684\u610f\u601d\u662f&#xff0c;\u4e0d\u80fd\u4fdd\u8bc1\u6570\u636e\u5305 100% \u7684\u5230\u8fbe&#xff0c;\u800c\u662f\u5c3d\u53ef\u80fd\u7684\u63d0\u9ad8\u4f20\u8f93\u6210\u529f\u7684\u6982\u7387\u3002\u5982\u679c\u51fa\u73b0\u4e86\u4e22\u5305&#xff0c;\u80fd\u591f\u611f\u77e5\u5230\u3002<\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u4e0d\u53ef\u9760\u4f20\u8f93&#xff0c;\u53ea\u662f\u628a\u6570\u636e\u53d1\u51fa\u53bb&#xff0c;\u4ed6\u5230\u5e95\u662f\u5230\u4e86\u8fd8\u662f\u6ca1\u5230&#xff0c;\u4ed6\u5c31\u4e0d\u7ba1\u4e86\u3002<\/li>\n<\/ul>\n<h2>\u56db\u3001\u9762\u5411\u5b57\u8282\u6d41 vs \u9762\u5411\u6570\u636e\u62a5<\/h2>\n<p>\u9762\u5411\u5b57\u8282\u6d41&#xff0c;\u8bfb\u5199\u6570\u636e\u7684\u65f6\u5019&#xff0c;\u662f\u4ee5\u5b57\u8282\u4e3a\u5355\u4f4d\u7684<\/p>\n<p>\u9762\u5411\u6570\u636e\u62a5&#xff0c;\u8bfb\u5199\u6570\u636e\u7684\u65f6\u5019&#xff0c;\u662f\u4ee5\u4e00\u4e2a\u6570\u636e\u62a5\u4e3a\u5355\u4f4d&#xff08;\u4e0d\u662f\u5b57\u7b26\u4e3a\u5355\u4f4d&#xff09;&#xff0c;\u4e00\u6b21\u5fc5\u987b\u8bfb\u5199\u4e00\u4e2a UDP \u6570\u636e\u62a5&#xff0c;\u4e0d\u80fd\u662f\u534a\u4e2a\u3002<\/p>\n<h2>\u4e94\u3001\u5168\u53cc\u516c vs \u534a\u53cc\u5de5<\/h2>\n<p>\u5168\u53cc\u5de5&#xff1a;\u4e00\u4e2a\u901a\u4fe1\u94fe\u8def&#xff0c;\u652f\u6301 \u53cc\u5411\u901a\u4fe1 &#xff08;\u80fd\u8bfb&#xff0c;\u4e5f\u80fd\u5199&#xff09;<\/p>\n<p>\u534a\u53cc\u5de5&#xff1a;\u4e00\u4e2a\u901a\u4fe1\u94fe\u8def&#xff0c;\u53ea\u652f\u6301\u5355\u5411\u901a\u4fe1&#xff08;\u53ea\u80fd\u8bfb&#xff0c;\u6216\u8005\u53ea\u80fd\u5199&#xff09;<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u4ed6\u4eec\u4fe9\u5c31\u50cf\u6211\u4eec\u7684\u4e00\u6761\u516c\u8def&#xff0c;\u516c\u8def\u4e0a\u7684\u9ec4\u8272\u7ebf&#xff0c;\u5c31\u662f\u8f66\u9053\u7684\u5206\u5272\u7ebf\u3002\u5168\u53cc\u5de5\u5c31\u50cf\u662f\u53cc\u5411\u516c\u8def&#xff0c;\u8fd9\u6761\u8def\u53ef\u4ee5\u4eceA\u5230B&#xff0c;\u4e5f\u53ef\u4ee5\u4eceB\u5230A\u3002\u534a\u53cc\u5de5\u5c31\u50cf\u662f\u5355\u5411\u516c\u8def&#xff0c;\u53ea\u80fd\u4eceA\u5230B&#xff0c;\u6216\u8005\u662f\u4eceB\u5230A\u3002<\/p>\n<p>\u63a5\u4e0b\u6765\u5c31\u53ef\u4ee5\u4f7f\u7528socket api \u8fdb\u884c\u7f51\u7edc\u7f16\u7a0b\u4e86<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5728\u8ba1\u7b97\u673a\u4e2d\u201c\u6587\u4ef6\u201d\u901a\u5e38\u662f\u4e00\u4e2a\u201c\u5e7f\u4e49\u7684\u6982\u5ff5\u201d&#xff0c;\u6587\u4ef6\u8fd8\u80fd\u4ee3\u6307\u4e00\u4e9b\u786c\u4ef6\u8bbe\u5907&#xff08;\u64cd\u4f5c\u7cfb\u7edf\u7ba1\u7406\u786c\u4ef6\u8bbe\u5907&#xff0c;\u4e5f\u662f\u62bd\u8c61\u6210\u6587\u4ef6&#xff0c;\u7edf\u4e00\u7ba1\u7406\u7684&#xff09;\u3002\u5c31\u50cf \u7f51\u5361 \u62bd\u8c61\u6210 socket \u6587\u4ef6&#xff0c;\u64cd\u4f5c\u7f51\u5361\u7684\u65f6\u5019&#xff0c;\u6d41\u7a0b\u548c\u64cd\u4f5c\u666e\u901a\u6587\u4ef6\u5dee\u4e0d\u591a&#xff0c; \u6253\u5f00 -&gt; \u8bfb\u5199 -&gt; \u5173\u95ed\u3002<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u64cd\u4f5c\u7f51\u5361&#xff0c;\u76f4\u63a5\u4e0d\u597d\u64cd\u4f5c&#xff0c;\u628a\u64cd\u4f5c\u7f51\u5361\u5f53\u6210\u64cd\u4f5c socket\u6587\u4ef6&#xff0c;\u5c31\u5bb9\u6613\u64cd\u4f5c\u4e86\u3002socket\u6587\u4ef6\u5c31\u76f8\u5f53\u4e8e\u201c\u7f51\u5361\u7684\u9065\u63a7\u5668\u201d\u3002<\/p>\n<h2>\u516d\u3001\u56de\u5347\u670d\u52a1\u5668&#xff08;\u91cd\u70b9&#xff09;<\/h2>\n<p>\u4e0b\u9762\u6211\u4eec\u5199\u4e00\u4e2a\u56de\u58f0\u670d\u52a1\u5668\u3002\u56de\u58f0\u670d\u52a1\u5668\u662f\u4e00\u4e2a\u5ba2\u6237\u7aef\u8f93\u5165\u4ec0\u4e48&#xff0c;\u670d\u52a1\u5668\u7aef\u4ec0\u4e48\u4efb\u52a1\u90fd\u4e0d\u505a&#xff0c;\u76f4\u63a5\u8fd4\u56de\u5ba2\u6237\u7aef\u8f93\u5165\u7684\u5185\u5bb9<\/p>\n<p>\u5148\u8bf4\u4e00\u4e0b\u5927\u81f4\u6d41\u7a0b&#xff1a;<\/p>\n<li>\u521b\u5efa\u4e00\u4e2a\u63a5\u53e3&#xff0c;\u8fd9\u4e2a\u63a5\u53e3\u7684\u7aef\u53e3\u5fc5\u987b\u662f\u56fa\u5b9a\u7684&#xff0c;\u4e3a\u7684\u5c31\u662f\u9632\u6b62\u8fd9\u4e2a\u670d\u52a1\u5668\u4eca\u5929\u5728\u8fd9\u4e2a\u7aef\u53e3&#xff0c;\u660e\u5929\u5728\u53e6\u5916\u4e00\u4e2a\u7aef\u53e3&#xff0c;\u7aef\u53e3\u975e\u5e38\u968f\u673a&#xff0c;\u6211\u4eec\u5f88\u96be\u53bb\u8bbf\u95ee\u8fd9\u4e2a\u6d41\u52a8\u7684\u670d\u52a1\u5668&#xff0c;\u6240\u4ee5\u6211\u4eec\u628a\u7aef\u53e3\u7ed9\u56fa\u5b9a\u4e4b\u540e&#xff0c;\u7aef\u53e3\u5c31\u4e0d\u4f1a\u8dd1\u4e86\u3002\u8fd9\u662f\u7c7b\u7684\u521b\u5efa\u548c\u6784\u9020\u51fd\u6570\u3002Datagram\u662f\u6570\u636e\u62a5,Socket \u662f\u63a5\u53e3&#xff0c;\u6240\u4ee5 DatagramSocket \u662f\u6570\u636e\u62a5\u7684\u63a5\u53e3&#xff0c;\u521b\u5efa\u4e00\u4e2a\u6570\u636e\u62a5\u7684\u63a5\u53e3\u3002 public class UdpEchoServer01 {<br \/>\n    private DatagramSocket socket &#061; null;<\/p>\n<p>    public UdpEchoServer01(int port) throws SocketException {<br \/>\n        \/\/ \u6307\u5b9a\u4e00\u4e2a\u56fa\u5b9a\u7aef\u53e3\u53f7&#xff0c;\u7ed9\u670d\u52a1\u5668\u4f7f\u7528<br \/>\n        socket &#061; new DatagramSocket(port);<br \/>\n    }<\/p>\n<p>} <\/p>\n<\/li>\n<li>\u521b\u5efa\u597d\u63a5\u53e3\u4e4b\u540e&#xff0c;\u56e0\u4e3a\u8fd9\u4e2a\u63a5\u53e3\u662f\u7ed9\u670d\u52a1\u5668\u670d\u52a1\u7684&#xff0c;\u6240\u4ee5\u6211\u4eec\u9700\u8981\u4e0d\u65ad\u7684\u63a5\u6536\u5ba2\u6237\u7aef\u7684\u8bf7\u6c42\u3002  public void start() throws IOException {<br \/>\n        System.out.println(&#034;\u670d\u52a1\u5668\u542f\u52a8&#034;);<br \/>\n        while(true){<br \/>\n        }<br \/>\n} <\/li>\n<li>\u5728\u4e0d\u65ad\u8bf7\u6c42\u4e2d&#xff0c;\u6211\u4eec\u9700\u8981\u53bb\u83b7\u53d6\u5ba2\u6237\u7aef\u7684\u8bf7\u6c42&#xff0c;\u6240\u4ee5\u6211\u4eec\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u6570\u636e\u62a5&#xff0c;\u6765\u63a5\u6536\u8bf7\u6c42\u7684\u5185\u5bb9  public void start() throws IOException {<br \/>\n        System.out.println(&#034;\u670d\u52a1\u5668\u542f\u52a8&#034;);<br \/>\n        while(true){<br \/>\n            DatagramPacket requestPacket &#061; new DatagramPacket(new byte[4096], 4096);<br \/>\n        }<br \/>\n}<\/p>\n<\/li>\n<li>\u4e0a\u9762\u6211\u4eec\u521b\u5efa\u597d\u8fd9\u4e2a\u6570\u636e\u62a5\u4e4b\u540e&#xff0c;\u53bb\u8c03\u7528\u63a5\u53e3\u6765\u7ed9\u8fd9\u4e2a\u6570\u636e\u62a5\u8bfb\u53d6\u5ba2\u6237\u7aef\u53d1\u6765\u7684\u8bf7\u6c42\u3002\u5c31\u80fd\u77e5\u9053\u5ba2\u6237\u7aef\u8981\u505a\u4ec0\u4e48\u4e86&#xff0c;\u5982\u679c\u5ba2\u6237\u7aef\u6ca1\u6709\u8bf7\u6c42\u7684\u53d1\u9001&#xff0c;\u8fd9\u91cc\u4e5f\u4f1a\u53d1\u751f\u963b\u585e\u7b49\u5f85\u3002 \u6211\u4eec\u9700\u8981\u4e00\u4e2a byte \u6570\u636e\u6765\u4fdd\u5b58\u8bf7\u6c42\u7684\u6570\u636e&#xff0c;\u6240\u4ee5\u521b\u5efa\u8fd9\u4e2a\u8bf7\u6c42\u6570\u636e\u62a5\u7684\u65f6\u5019\u9700\u8981\u4f20\u5165\u4e00\u4e2abyte \u6570\u7ec4\u6765\u4fdd\u5b58\u8bf7\u6c42\u3002\u00a0  public void start() throws IOException {<br \/>\n        System.out.println(&#034;\u670d\u52a1\u5668\u542f\u52a8&#034;);<br \/>\n        while(true){<br \/>\n            DatagramPacket requestPacket &#061; new DatagramPacket(new byte[4096], 4096);<br \/>\n\/\/\/\/\/\/\/\/\/\/\/\/    \u4f7f\u7528\u63a5\u53e3\u7ed9 requestPacket \u8fd9\u4e2a\u6570\u636e\u62a5\u4e2d\u4f20\u5165\u5ba2\u6237\u7aef\u7684\u8bf7\u6c42<br \/>\n            socket.receive(requestPacket);<\/p>\n<p>        }<br \/>\n}\n <\/li>\n<li>\u7ecf\u8fc7 requestPacket \u8fd9\u4e2a\u8bf7\u6c42\u6570\u636e\u62a5\u63a5\u6536\u5ba2\u6237\u7aef\u53d1\u9001\u7684\u8bf7\u6c42\u4e4b\u540e&#xff0c;\u8fd9\u4e2a\u6570\u636e\u62a5\u5185\u5c31\u4fdd\u5b58\u597d\u4e86\u5ba2\u6237\u7aef\u53d1\u9001\u7684\u6570\u636e\u62a5\u7684\u5185\u5bb9&#xff0c;\u6211\u4eec\u628a\u5176\u4e2d\u7684\u5ba2\u6237\u7aef\u53d1\u9001\u7684\u8bf7\u6c42\u7ed9\u89e3\u6790\u51fa\u6765\u653e\u5230\u4e00\u4e2aString\u4e2d\u3002 \u56e0\u4e3a\u662f\u6784\u9020String&#xff0c;\u6240\u4ee5\u6211\u4eec\u83b7\u53d6\u5230 data \u4e4b\u540e&#xff0c;\u9700\u8981\u4ece0\u5f00\u59cb\u8bfb\u53d6&#xff0c;\u7136\u540e\u6784\u9020\u8fd9\u4e2a\u6570\u636e\u62a5\u7684\u957f\u5ea6\u7684\u5927\u5c0f\u3002  public void start() throws IOException {<br \/>\n        System.out.println(&#034;\u670d\u52a1\u5668\u542f\u52a8&#034;);<br \/>\n        while(true){<br \/>\n            DatagramPacket requestPacket &#061; new DatagramPacket(new byte[4096], 4096);<br \/>\n            socket.receive(requestPacket);<br \/>\n\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/   \u83b7\u53d6 requestPacket \u4e2d\u7684 data<br \/>\n            String request &#061; new String(requestPacket.getData(), 0, requestPacket.getLength());<\/p>\n<p>\/\/\/\/\/\/\/\/\/\/\/\/\/\/   \u8fd9\u91cc\u65e0\u6cd5\u4f7f\u7528&#xff0c;\u5982\u679c\u4f20\u5165 getData().length \u6bcf\u6b21\u6784\u9020\u7684\u957f\u5ea6\u90fd\u4f1a\u662f4096,\u4f1a\u9020\u6210\u8bf7\u6c42\u6df7\u4e71<br \/>\n             \/\/  String request &#061; new String(requestPacket.getData(), 0, requestPacket.getData().length);<br \/>\n        }<br \/>\n}<\/p>\n<\/li>\n<li>\u6211\u4eec\u6709\u4e86\u8fd9\u4e2a\u8bf7\u6c42\u4e4b\u540e&#xff0c;\u6784\u9020\u4e00\u4e2a\u5904\u7406\u51fd\u6570&#xff0c;\u5904\u7406\u4e00\u4e0b\u8fd9\u4e2a\u8bf7\u6c42&#xff0c;\u6a21\u62df\u4e00\u4e0b\u771f\u5b9e\u670d\u52a1\u5668\u7684\u8fd0\u884c\u3002\u56e0\u4e3a\u8fd9\u91cc\u6211\u4eec\u5199\u7684\u662f\u56de\u58f0\u670d\u52a1\u5668&#xff0c;\u4f60\u4e5f\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u8fd9\u4e2a\u8bf7\u6c42\u5b57\u7b26\u4e32\u6765\u6784\u9020\u54cd\u5e94\u6570\u636e\u62a5\u3002\u8fd9\u91cc\u5c01\u88c5\u6210\u4e00\u4e2a\u51fd\u6570\u6765\u5904\u7406\u8fd9\u4e2a\u8bf7\u6c42\u3002     public void start() throws IOException {<br \/>\n        System.out.println(&#034;\u670d\u52a1\u5668\u542f\u52a8&#034;);<br \/>\n        while(true){<br \/>\n            DatagramPacket requestPacket &#061; new DatagramPacket(new byte[4096], 4096);<br \/>\n            socket.receive(requestPacket);<br \/>\n            String request &#061; new String(requestPacket.getData(), 0, requestPacket.getLength());<br \/>\n\/\/\/\/       \u4f7f\u7528 response \u63a5\u6536\u54cd\u5e94<br \/>\n            String response &#061; process(request);<\/p>\n<p>        }<br \/>\n    }<br \/>\n\/\/\/\/\/ \u670d\u52a1\u5668\u5904\u7406\u8bf7\u6c42\u8fd4\u56de\u54cd\u5e94\u7684\u51fd\u6570<br \/>\n    public String process(String request){<br \/>\n        return request;<br \/>\n    } <\/p>\n<\/li>\n<li>\u62ff\u5230\u54cd\u5e94\u4e4b\u540e\u6211\u4eec\u5c31\u53ef\u4ee5\u6784\u9020\u6570\u636e\u62a5\u8fd4\u56de\u7ed9\u5ba2\u6237\u7aef\u7684\u63a5\u53e3&#xff0c;\u8fd9\u65f6\u5019\u6211\u4eec\u9700\u8981\u77e5\u9053\u5ba2\u6237\u7aef\u7684IP\u548c\u7aef\u53e3&#xff0c;\u8fd9\u4e24\u4e2a\u5185\u5bb9\u90fd\u5728requestPacket\u63a5\u6536\u5ba2\u6237\u7aef\u7684\u8bf7\u6c42\u7684\u65f6\u5019\u5c31\u4fdd\u5b58\u8d77\u6765\u4e86&#xff0c;\u8fd9\u65f6\u5019\u6211\u4eec\u53ef\u4ee5\u6784\u9020\u4e00\u4e2a\u54cd\u5e94\u6570\u636e\u62a5&#xff0c;\u76f4\u63a5\u8c03\u7528 requestPacket \u91cc\u9762\u7684 getAddress() \u83b7\u53d6 IP&#xff0c;getPort() \u83b7\u53d6\u7aef\u53e3\u3002\u6216\u8005\u4f7f\u7528 getSocketAdderss() \u76f4\u63a5\u83b7\u53d6\u5ba2\u6237\u7aef\u7684 IP\u548c\u7aef\u53e3\u3002     public void start() throws IOException {<br \/>\n        System.out.println(&#034;\u670d\u52a1\u5668\u542f\u52a8&#034;);<br \/>\n        while(true){<br \/>\n            DatagramPacket requestPacket &#061; new DatagramPacket(new byte[4096], 4096);<br \/>\n            socket.receive(requestPacket);<br \/>\n            String request &#061; new String(requestPacket.getData(), 0, requestPacket.getLength());<br \/>\n            String response &#061; process(request);<\/p>\n<p>\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/ \u76f4\u63a5\u4f7f\u7528 getSocketAdderss()<br \/>\n            DatagramPacket responsePacket &#061; new DatagramPacket(response.getBytes(),response.getBytes().length,<br \/>\n                    requestPacket.getSocketAddress());<br \/>\n\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/ \u4f7f\u7528 getAddress() \u548c gerPort() \u5206\u522b\u83b7\u53d6 IP \u548c \u7aef\u53e3\u53f7<br \/>\n\/\/            DatagramPacket responsePacket &#061; new DatagramPacket(response.getBytes(),response.getBytes().length,<br \/>\n\/\/                    requestPacket.getAddress(), requestPacket.getPort());<\/p>\n<p>        }<br \/>\n    }<br \/>\n    public String process(String request){<br \/>\n        return request;<br \/>\n    } <\/p>\n<\/li>\n<li>\u6700\u540e\u53ef\u4ee5\u628a\u54cd\u5e94\u6570\u636e\u62a5\u8fd4\u56de\u7ed9\u5ba2\u6237\u7aef&#xff0c;\u4e4b\u540e\u5c31\u662f\u5ba2\u6237\u7aef\u6765\u63a5\u53d7\u8fd9\u4e2a\u54cd\u5e94\u4e86\u3002 \u8fd8\u53ef\u4ee5\u6253\u5370\u4e00\u4e0b\u670d\u52a1\u5668\u7aef\u65e5\u5fd7&#xff0c;requestPacket \u91cc\u9762\u4fdd\u5b58\u4e86\u5ba2\u6237\u7aef\u7684 IP \u548c \u7aef\u53e3\u53f7\u3002 [IP:\u7aef\u53e3\u53f7] req: \u8bf7\u6c42 resp: \u54cd\u5e94 \u54ea\u4e2a IP \u7684 \u673a\u5668&#xff0c;\u54ea\u4e2a\u7aef\u53e3\u7684\u7a0b\u5e8f \u8bbf\u95ee\u4e86\u670d\u52a1\u5668&#xff0c;\u8bf7\u6c42\u662f\u4ec0\u4e48&#xff0c;\u670d\u52a1\u5668\u7ed9\u7684\u54cd\u5e94\u662f\u4ec0\u4e48     public void start() throws IOException {<br \/>\n        System.out.println(&#034;\u670d\u52a1\u5668\u542f\u52a8&#034;);<br \/>\n        while(true){<br \/>\n            DatagramPacket requestPacket &#061; new DatagramPacket(new byte[4096], 4096);<br \/>\n            socket.receive(requestPacket);<br \/>\n            String request &#061; new String(requestPacket.getData(), 0, requestPacket.getLength());<br \/>\n            String response &#061; process(request);<br \/>\n            DatagramPacket responsePacket &#061; new DatagramPacket(response.getBytes(),response.getBytes().length,<br \/>\n                    requestPacket.getSocketAddress());<br \/>\n\/\/\/\/\/\/\/\/\/\/   \u628a\u54cd\u5e94\u6570\u636e\u62a5\u8fd4\u56de\u7ed9\u5ba2\u6237\u7aef<br \/>\n            socket.send(responsePacket);<br \/>\n\/\/\/\/\/\/\/\/\/\/\/\/\/  \u6253\u5370\u4e00\u4e0b\u670d\u52a1\u5668\u65e5\u5fd7<br \/>\n            System.out.printf(&#034;[%s:%d] req: %s resp: %s\\\\n&#034;, requestPacket.getAddress(), requestPacket.getPort(),<br \/>\n                                request, response);<br \/>\n        }<br \/>\n    }<br \/>\n    public String process(String request){<br \/>\n        return request;<br \/>\n    } <\/p>\n<\/li>\n","protected":false},"excerpt":{"rendered":"<p>\u76ee\u5f55 \u5e94\u7528\u5c42<br \/>\n\u4e00\u3001\u4f20\u8f93\u5c42\u7684\u4e24\u4e2a\u6838\u5fc3\u534f\u8bae<br \/>\n\u4e8c\u3001\u6709\u94fe\u63a5\/\u65e0\u8fde\u63a5&#xff08;\u662f\u62bd\u8c61\u7684\u6982\u5ff5&#xff0c;\u662f\u865a\u62df\u7684\/\u903b\u8f91\u4e0a\u7684\u8fde\u63a5&#xff09;&#xff0c;\u4f8b\u5982\u8981\u8fdb\u884c\u7f51\u7edc\u901a\u4fe1&#xff0c;\u7269\u7406\u4e0a\u7684\u8fde\u63a5&#xff08;\u7f51\u7ebf\u5565\u7684&#xff09;<br \/>\n\u4e09\u3001\u53ef\u9760\u4f20\u8f93 vs \u4e0d\u53ef\u9760\u4f20\u8f93<br \/>\n\u56db\u3001\u9762\u5411\u5b57\u8282\u6d41 vs \u9762\u5411\u6570\u636e\u62a5<br \/>\n\u4e94\u3001\u5168\u53cc\u516c vs \u534a\u53cc\u5de5<br \/>\n\u516d\u3001\u56de\u5347\u670d\u52a1\u5668&#xff08;\u91cd\u70b9&#xff09; \u5e94\u7528\u5c42 \u64cd\u4f5c\u7cfb\u7edf\u63d0\u4f9b\u7684\u4e00\u7ec4 API &gt; socket API (\u4f20\u8f93\u5c42\u7ed9\u5e94\u7528\u5c42\u63d0<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[78],"topic":[],"class_list":["post-81441","post","type-post","status-publish","format-standard","hentry","category-server","tag-78"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>UDP \u548c TCP \u7f51\u7edc\u77e5\u8bc6\u548c\u201cUdp\u534f\u8bae\u7684\u56de\u58f0\u670d\u52a1\u5668\u8be6\u7ec6\u5256\u6790\u201d\uff085000\u5b57\u8be6\u7ec6\u89e3\u6790\u56de\u5347\u670d\u52a1\u5668\u7684\u70b9\u70b9\u6ef4\u6ef4\uff09\uff08\u7f51\u7edc\u7f16\u7a0b01\uff09 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/81441.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"UDP \u548c TCP \u7f51\u7edc\u77e5\u8bc6\u548c\u201cUdp\u534f\u8bae\u7684\u56de\u58f0\u670d\u52a1\u5668\u8be6\u7ec6\u5256\u6790\u201d\uff085000\u5b57\u8be6\u7ec6\u89e3\u6790\u56de\u5347\u670d\u52a1\u5668\u7684\u70b9\u70b9\u6ef4\u6ef4\uff09\uff08\u7f51\u7edc\u7f16\u7a0b01\uff09 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"\u76ee\u5f55 \u5e94\u7528\u5c42 \u4e00\u3001\u4f20\u8f93\u5c42\u7684\u4e24\u4e2a\u6838\u5fc3\u534f\u8bae 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