{"id":41161,"date":"2025-05-31T10:25:49","date_gmt":"2025-05-31T02:25:49","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/41161.html"},"modified":"2025-05-31T10:25:49","modified_gmt":"2025-05-31T02:25:49","slug":"%e6%9e%84%e5%bb%baudp%e7%bb%84%e6%92%ad%e9%80%9a%e4%bf%a1%ef%bc%9a%e6%9c%8d%e5%8a%a1%e5%99%a8%e4%b8%8e%e5%ae%a2%e6%88%b7%e7%ab%af%e5%ae%9e%e6%88%98%e6%8c%87%e5%8d%97","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/41161.html","title":{"rendered":"\u6784\u5efaUDP\u7ec4\u64ad\u901a\u4fe1\uff1a\u670d\u52a1\u5668\u4e0e\u5ba2\u6237\u7aef\u5b9e\u6218\u6307\u5357"},"content":{"rendered":"<p>  \u672c\u6587\u8fd8\u6709\u914d\u5957\u7684\u7cbe\u54c1\u8d44\u6e90&#xff0c;\u70b9\u51fb\u83b7\u53d6  <img decoding=\"async\" alt=\"menu-r.4af5f7ec.gif\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/05\/20250531022547-683a68ab86643.gif\" style=\"width:16px;margin-left:4px;vertical-align:text-bottom;cursor:text\" \/> <\/p>\n<p> \u7b80\u4ecb&#xff1a;UDP\u7ec4\u64ad\u662f\u4e00\u79cd\u9ad8\u6548\u7684\u591a\u70b9\u4f20\u8f93\u534f\u8bae&#xff0c;\u9002\u5408\u5bf9\u5ef6\u8fdf\u654f\u611f\u7684\u5e94\u7528\u573a\u666f\u5982\u6d41\u5a92\u4f53\u548c\u5728\u7ebf\u4f1a\u8bae\u3002\u672c\u9879\u76ee\u5206\u4e3a\u670d\u52a1\u5668\u7aef\u548c\u5ba2\u6237\u7aef\u4e24\u90e8\u5206&#xff0c;\u5c55\u793a\u4e86\u5982\u4f55\u5229\u7528Winsock API\u5728Windows\u73af\u5883\u4e0b\u5f00\u53d1UDP\u7ec4\u64ad\u901a\u4fe1\u3002\u9879\u76ee\u5305\u542b\u4e86\u670d\u52a1\u5668\u4e0e\u5ba2\u6237\u7aef\u7684\u8bbe\u8ba1\u5b9e\u73b0&#xff0c;\u8bb2\u89e3\u4e86\u4ece\u521d\u59cb\u5316Winsock\u5230\u6570\u636e\u63a5\u6536\u4e0e\u53d1\u9001\u7684\u6574\u4e2a\u6d41\u7a0b&#xff0c;\u5e76\u901a\u8fc7\u6e90\u4ee3\u7801\u7684\u9605\u8bfb\u4e0e\u5206\u6790&#xff0c;\u6307\u5bfc\u5f00\u53d1\u8005\u7406\u89e3\u548c\u638c\u63e1UDP\u7ec4\u64ad\u901a\u4fe1\u7684\u539f\u7406\u4e0e\u5b9e\u8df5\u3002 <img decoding=\"async\" alt=\"UDP\u7ec4\u64ad\u901a\u4fe1\u670d\u52a1\u5668\u53ca\u5ba2\u6237\u7aef\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/05\/20250531022547-683a68abc956e.png\" \/> <\/p>\n<h2> 1. UDP\u534f\u8bae\u4ecb\u7ecd\u53ca\u7ec4\u64ad\u901a\u4fe1\u4f18\u52bf <\/h2>\n<h3> UDP\u534f\u8bae\u6982\u8ff0 <\/h3>\n<p> \u7528\u6237\u6570\u636e\u62a5\u534f\u8bae&#xff08;UDP&#xff09;\u662f\u4e00\u79cd\u65e0\u8fde\u63a5\u7684\u4f20\u8f93\u5c42\u534f\u8bae\u3002\u5b83\u4e3a\u5e94\u7528\u7a0b\u5e8f\u63d0\u4f9b\u4e86\u4e00\u79cd\u5feb\u901f\u3001\u7b80\u5355\u3001\u76f4\u63a5\u7684\u65b9\u5f0f\u6765\u53d1\u9001\u6570\u636e\u62a5\u3002\u4e0e\u9762\u5411\u8fde\u63a5\u7684TCP\u534f\u8bae\u4e0d\u540c&#xff0c;UDP\u4e0d\u9700\u8981\u5efa\u7acb\u4f1a\u8bdd&#xff0c;\u4e0d\u4fdd\u8bc1\u6570\u636e\u7684\u987a\u5e8f&#xff0c;\u4e5f\u4e0d\u4fdd\u8bc1\u6570\u636e\u7684\u5b8c\u6574\u6027\u3002\u8fd9\u79cd\u5feb\u901f\u4f20\u8f93\u673a\u5236\u4f7f\u5f97UDP\u7279\u522b\u9002\u5408\u4e8e\u5b9e\u65f6\u901a\u4fe1\u548c\u7ec4\u64ad\u573a\u666f\u3002 <\/p>\n<h3> \u7ec4\u64ad\u901a\u4fe1\u7684\u4f18\u52bf <\/h3>\n<p> \u7ec4\u64ad\u662f\u4e00\u79cd\u7f51\u7edc\u4f20\u8f93\u65b9\u5f0f&#xff0c;\u5141\u8bb8\u53d1\u9001\u65b9\u53d1\u9001\u5355\u4e2a\u6570\u636e\u5305\u5230\u591a\u4e2a\u63a5\u6536\u65b9\u3002\u76f8\u6bd4\u4f20\u7edf\u7684\u5355\u64ad&#xff08;\u6bcf\u4e2a\u63a5\u6536\u65b9\u5355\u72ec\u63a5\u6536\u6570\u636e&#xff09;\u548c\u5e7f\u64ad&#xff08;\u6240\u6709\u7f51\u7edc\u4e0a\u7684\u8bbe\u5907\u90fd\u63a5\u6536\u5230\u6570\u636e&#xff09;&#xff0c;\u7ec4\u64ad\u663e\u8457\u51cf\u5c11\u4e86\u7f51\u7edc\u5e26\u5bbd\u7684\u4f7f\u7528&#xff0c;\u5e76\u63d0\u9ad8\u4e86\u6570\u636e\u4f20\u8f93\u6548\u7387\u3002UDP\u534f\u8bae\u5929\u7136\u652f\u6301\u7ec4\u64ad\u529f\u80fd&#xff0c;\u8fd9\u4f7f\u5f97\u5b83\u6210\u4e3a\u8bf8\u5982\u6d41\u5a92\u4f53\u76f4\u64ad\u3001\u5b9e\u65f6\u6e38\u620f\u548c\u5176\u4ed6\u9700\u8981\u540c\u65f6\u5411\u591a\u4e2a\u63a5\u6536\u8005\u4f20\u8f93\u6570\u636e\u7684\u5e94\u7528\u7684\u7406\u60f3\u9009\u62e9\u3002 <\/p>\n<h3> \u5b9e\u9645\u5e94\u7528\u4e2d\u7684\u4f18\u52bf\u5206\u6790 <\/h3>\n<p> \u5728\u5b9e\u8df5\u4e2d&#xff0c;\u7ec4\u64ad\u7684\u4f18\u52bf\u660e\u663e\u3002\u5b83\u4e0d\u4ec5\u964d\u4f4e\u4e86\u670d\u52a1\u5668\u7684\u8d1f\u8f7d&#xff0c;\u51cf\u5c11\u4e86\u670d\u52a1\u5668\u53d1\u9001\u76f8\u540c\u6570\u636e\u7684\u6b21\u6570&#xff0c;\u4e5f\u51cf\u5c11\u4e86\u5ba2\u6237\u7aef\u63a5\u6536\u4e0d\u5fc5\u8981\u7684\u6570\u636e\u5305\u3002\u8fd9\u610f\u5473\u7740\u7f51\u7edc\u62e5\u585e\u7684\u964d\u4f4e\u3001\u5ef6\u8fdf\u7684\u51cf\u5c11\u4ee5\u53ca\u6570\u636e\u4f20\u8f93\u7684\u6574\u4f53\u6548\u7387\u63d0\u5347&#xff0c;\u7279\u522b\u662f\u5728\u4f20\u8f93\u5927\u91cf\u6570\u636e\u7684\u5b9e\u65f6\u5e94\u7528\u4e2d\u8868\u73b0\u5c24\u4e3a\u7a81\u51fa\u3002 <\/p>\n<h2> 2. Winsock API\u5728UDP\u7ec4\u64ad\u4e2d\u7684\u5e94\u7528 <\/h2>\n<h4> 2.1 Winsock API\u57fa\u7840 <\/h4>\n<h5> 2.1.1 Winsock API\u6982\u8ff0 <\/h5>\n<p> Winsock API&#xff0c;\u5373Windows\u5957\u63a5\u5b57\u5e94\u7528\u7a0b\u5e8f\u63a5\u53e3&#xff0c;\u662f\u5fae\u8f6f\u63a8\u51fa\u7684\u4e00\u5957\u7f51\u7edc\u7f16\u7a0b\u63a5\u53e3\u3002\u8be5\u63a5\u53e3\u4e3aWindows\u4e0b\u7684\u7f51\u7edc\u901a\u4fe1\u7f16\u7a0b\u63d0\u4f9b\u4e86\u6807\u51c6\u65b9\u6cd5&#xff0c;\u5141\u8bb8\u5e94\u7528\u7a0b\u5e8f\u5728\u9075\u5faaTCP\/IP\u534f\u8bae\u7684\u57fa\u7840\u4e0a&#xff0c;\u8fdb\u884c\u7f51\u7edc\u6570\u636e\u7684\u53d1\u9001\u4e0e\u63a5\u6536\u3002Winsock API\u7684\u6700\u521d\u7248\u672c\u4e3b\u8981\u652f\u6301TCP\/IP\u534f\u8bae&#xff0c;\u4f46\u968f\u7740Windows\u7684\u6f14\u8fdb&#xff0c;Winsock API\u4e5f\u652f\u6301\u4e86\u8bf8\u5982UDP\u7ec4\u64ad\u7b49\u5176\u4ed6\u7c7b\u578b\u7684\u7f51\u7edc\u901a\u4fe1\u65b9\u5f0f\u3002UDP\u7ec4\u64ad\u901a\u4fe1\u5229\u7528\u4e86Winsock API\u4e2d\u7684\u591a\u64ad\u529f\u80fd&#xff0c;\u5141\u8bb8\u5355\u4e2a\u6570\u636e\u5305\u5728\u591a\u4e2a\u76ee\u7684\u5730\u4e4b\u95f4\u4f20\u9012&#xff0c;\u5927\u5927\u63d0\u9ad8\u4e86\u7f51\u7edc\u901a\u4fe1\u7684\u6548\u7387\u3002 <\/p>\n<h5> 2.1.2 Winsock\u521d\u59cb\u5316\u4e0e\u6e05\u7406 <\/h5>\n<p> \u5728\u4f7f\u7528Winsock\u8fdb\u884c\u7f51\u7edc\u7f16\u7a0b\u4e4b\u524d&#xff0c;\u5fc5\u987b\u5bf9\u5176\u8fdb\u884c\u521d\u59cb\u5316\u3002\u901a\u5e38\u60c5\u51b5\u4e0b&#xff0c;\u8c03\u7528  WSAStartup  \u51fd\u6570\u6765\u521d\u59cb\u5316Winsock&#xff0c;\u6b64\u51fd\u6570\u9700\u8981\u5e94\u7528\u7a0b\u5e8f\u63d0\u4f9b\u4e00\u4e2a\u7248\u672c\u53f7\u4ee5\u53ca\u4e00\u4e9b\u5fc5\u8981\u7684\u521d\u59cb\u5316\u53c2\u6570\u3002\u521d\u59cb\u5316\u5b8c\u6210\u540e&#xff0c;\u6574\u4e2aWinsock API\u5c31\u53ef\u4ee5\u88ab\u8c03\u7528\u4e86\u3002 <\/p>\n<p> \u5728\u7a0b\u5e8f\u7ed3\u675f\u65f6&#xff0c;\u5e94\u8c03\u7528  WSACleanup  \u51fd\u6570\u6765\u6e05\u7406Winsock&#xff0c;\u91ca\u653e\u6240\u6709\u4e4b\u524d\u5206\u914d\u7684\u8d44\u6e90&#xff0c;\u4fdd\u8bc1\u7a0b\u5e8f\u7684\u7a33\u5b9a\u8fd0\u884c\u548c\u7cfb\u7edf\u7684\u8d44\u6e90\u4e0d\u4f1a\u6cc4\u9732\u3002 <\/p>\n<p>WSADATA wsaData;<br \/>\nint iResult;<\/p>\n<p>\/\/ \u521d\u59cb\u5316Winsock<br \/>\niResult &#061; WSAStartup(MAKEWORD(2,2), &amp;wsaData);<br \/>\nif (iResult !&#061; 0) {<br \/>\n    printf(&#034;WSAStartup failed: %d\\\\n&#034;, iResult);<br \/>\n    return 1;<br \/>\n}<\/p>\n<p>\/\/ \u5e94\u7528\u7a0b\u5e8f\u4ee3\u7801&#8230;<\/p>\n<p>\/\/ \u6e05\u7406Winsock<br \/>\nWSACleanup();<\/p>\n<h4> 2.2 Winsock API\u4e2d\u7684UDP\u7ec4\u64ad\u64cd\u4f5c <\/h4>\n<h5> 2.2.1 \u521b\u5efaUDP\u5957\u63a5\u5b57 <\/h5>\n<p> \u5728Winsock\u4e2d&#xff0c;\u8fdb\u884cUDP\u7ec4\u64ad\u901a\u4fe1\u9996\u5148\u8981\u521b\u5efa\u4e00\u4e2a\u5957\u63a5\u5b57\u3002\u4f7f\u7528  socket  \u51fd\u6570\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u5957\u63a5\u5b57\u3002\u5bf9\u4e8eUDP\u7ec4\u64ad\u901a\u4fe1&#xff0c;\u8be5\u5957\u63a5\u5b57\u9700\u8981\u6307\u5b9a\u4e3a  SOCK_DGRAM  \u7c7b\u578b&#xff0c;\u8868\u793a\u65e0\u8fde\u63a5\u7684\u6570\u636e\u62a5\u5957\u63a5\u5b57\u3002 <\/p>\n<p>SOCKET sock &#061; socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);<br \/>\nif (sock &#061;&#061; INVALID_SOCKET) {<br \/>\n    printf(&#034;Error at socket(): %ld\\\\n&#034;, WSAGetLastError());<br \/>\n    WSACleanup();<br \/>\n    return 1;<br \/>\n}<\/p>\n<h5> 2.2.2 \u7ec4\u64ad\u5730\u5740\u548c\u7aef\u53e3\u7684\u8bbe\u7f6e <\/h5>\n<p> \u63a5\u4e0b\u6765\u9700\u8981\u4e3aUDP\u5957\u63a5\u5b57\u8bbe\u7f6e\u7ec4\u64ad\u5730\u5740\u548c\u7aef\u53e3\u3002\u4f7f\u7528  setsockopt  \u51fd\u6570\u53ef\u4ee5\u4e3a\u5957\u63a5\u5b57\u914d\u7f6e\u5404\u79cd\u53c2\u6570&#xff0c;\u5176\u4e2d\u5305\u542b\u7ec4\u64ad\u76f8\u5173\u7684\u9009\u9879\u3002\u4f8b\u5982&#xff0c;\u53ef\u4ee5\u4f7f\u7528  IP_ADD_MEMBERSHIP  \u9009\u9879\u5c06\u5957\u63a5\u5b57\u52a0\u5165\u5230\u4e00\u4e2a\u7279\u5b9a\u7684\u7ec4\u64ad\u7ec4\u4e2d\u3002 <\/p>\n<p>struct ip_mreq mreq;<br \/>\nmreq.imr_multiaddr.s_addr &#061; inet_addr(&#034;239.255.255.250&#034;);<br \/>\nmreq.imr_interface.s_addr &#061; htonl(INADDR_ANY);<\/p>\n<p>if (setsockopt(sock, IPPROTO_IP, IP_ADD_MEMBERSHIP, (char*)&amp;mreq, sizeof(mreq)) &#061;&#061; SOCKET_ERROR) {<br \/>\n    printf(&#034;Error setting IP_ADD_MEMBERSHIP: %d\\\\n&#034;, WSAGetLastError());<br \/>\n    closesocket(sock);<br \/>\n    WSACleanup();<br \/>\n    return 1;<br \/>\n}<\/p>\n<h5> 2.2.3 \u7ec4\u64ad\u6210\u5458\u7ba1\u7406\u51fd\u6570 <\/h5>\n<p> Winsock API\u63d0\u4f9b\u4e86\u591a\u4e2a\u51fd\u6570\u6765\u7ba1\u7406\u7ec4\u64ad\u6210\u5458&#xff0c;\u6bd4\u5982  getsockopt  \u548c  setsockopt  \u53ef\u4ee5\u7528\u6765\u67e5\u8be2\u548c\u8bbe\u7f6e\u5957\u63a5\u5b57\u9009\u9879&#xff0c;\u800c  sendto  \u548c  recvfrom  \u7528\u4e8e\u53d1\u9001\u548c\u63a5\u6536\u7ec4\u64ad\u6d88\u606f\u3002\u5408\u7406\u4f7f\u7528\u8fd9\u4e9b\u51fd\u6570\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u8005\u63a7\u5236\u548c\u4f18\u5316\u7ec4\u64ad\u901a\u4fe1\u8fc7\u7a0b\u3002 <\/p>\n<p>char recvbuf[512];<br \/>\nstruct sockaddr_in recvAddr;<br \/>\nint recvbuflen &#061; sizeof(recvAddr);<\/p>\n<p>\/\/ \u63a5\u6536\u7ec4\u64ad\u6d88\u606f<br \/>\nint iResult &#061; recvfrom(sock, recvbuf, 512, 0, (SOCKADDR*)&amp;recvAddr, &amp;recvbuflen);<br \/>\nif (iResult &gt; 0) {<br \/>\n    recvbuf[iResult] &#061; &#039;\\\\0&#039;;<br \/>\n    printf(&#034;Received &#039;%s&#039;\\\\n&#034;, recvbuf);<br \/>\n}<br \/>\nelse if (iResult &#061;&#061; SOCKET_ERROR) {<br \/>\n    printf(&#034;recvfrom failed: %d\\\\n&#034;, WSAGetLastError());<br \/>\n}<\/p>\n<p> \u4ee5\u4e0a\u4ee3\u7801\u6f14\u793a\u4e86\u5982\u4f55\u63a5\u6536\u7ec4\u64ad\u6d88\u606f\u3002  recvfrom  \u51fd\u6570\u4e2d&#xff0c;\u6570\u636e\u5305\u4ece\u7ec4\u64ad\u7ec4\u63a5\u6536\u5e76\u5b58\u50a8\u5728  recvbuf  \u4e2d&#xff0c;\u540c\u65f6\u51fd\u6570\u8fd4\u56de\u5b9e\u9645\u63a5\u6536\u5230\u7684\u6570\u636e\u957f\u5ea6\u3002\u63a5\u6536\u64cd\u4f5c\u662f\u5f02\u6b65\u8fdb\u884c\u7684&#xff0c;\u5982\u679c\u9700\u8981&#xff0c;\u53ef\u4ee5\u914d\u5408  select  \u51fd\u6570\u4f7f\u7528\u4ee5\u5b9e\u73b0\u540c\u6b65\u963b\u585e\u6a21\u5f0f\u3002 <\/p>\n<p> \u4ee5\u4e0a\u5185\u5bb9\u5b8c\u6210\u4e86\u5bf9Winsock API\u5728UDP\u7ec4\u64ad\u901a\u4fe1\u4e2d\u7684\u5e94\u7528\u7684\u57fa\u7840\u4ecb\u7ecd\u3002\u5bf9\u4e8e\u5f00\u53d1\u8005\u800c\u8a00&#xff0c;\u7406\u89e3Winsock API\u5e76\u638c\u63e1\u5176\u5728UDP\u7ec4\u64ad\u4e2d\u7684\u5177\u4f53\u4f7f\u7528\u65b9\u6cd5&#xff0c;\u662f\u8fdb\u884c\u7f51\u7edc\u7f16\u7a0b\u548c\u5b9e\u73b0\u9ad8\u6548\u901a\u4fe1\u7684\u524d\u63d0\u3002\u5728\u63a5\u4e0b\u6765\u7684\u7ae0\u8282\u4e2d&#xff0c;\u5c06\u6df1\u5165\u63a2\u8ba8\u670d\u52a1\u5668\u7aef\u548c\u5ba2\u6237\u7aef\u7684\u5b9e\u73b0\u6b65\u9aa4\u4e0e\u4ee3\u7801\u903b\u8f91\u3002 <\/p>\n<h2> 3. \u670d\u52a1\u5668\u7aef\u5b9e\u73b0\u6b65\u9aa4\u4e0e\u4ee3\u7801\u903b\u8f91 <\/h2>\n<h3> 3.1 \u670d\u52a1\u5668\u7aef\u6982\u5ff5\u548c\u8bbe\u8ba1 <\/h3>\n<h4> 3.1.1 \u670d\u52a1\u5668\u7aef\u901a\u4fe1\u6a21\u578b <\/h4>\n<p> \u670d\u52a1\u5668\u7aef\u901a\u4fe1\u6a21\u578b\u662f\u7f51\u7edc\u901a\u4fe1\u7684\u57fa\u7840&#xff0c;\u5b83\u89c4\u5b9a\u4e86\u670d\u52a1\u5668\u5982\u4f55\u54cd\u5e94\u5ba2\u6237\u7aef\u8bf7\u6c42\u3001\u5982\u4f55\u5904\u7406\u6570\u636e\u4ee5\u53ca\u5982\u4f55\u7ef4\u62a4\u8fde\u63a5\u72b6\u6001\u7b49\u3002\u5728UDP\u7ec4\u64ad\u901a\u4fe1\u4e2d&#xff0c;\u670d\u52a1\u5668\u7aef\u901a\u5e38\u91c7\u7528\u65e0\u8fde\u63a5\u7684\u901a\u4fe1\u65b9\u5f0f&#xff0c;\u8fd9\u610f\u5473\u7740\u670d\u52a1\u5668\u4e0d\u4f1a\u4e3a\u6bcf\u4e2a\u5ba2\u6237\u7aef\u7ef4\u62a4\u4e00\u4e2a\u6301\u7eed\u7684\u8fde\u63a5\u3002\u76f8\u53cd&#xff0c;\u5b83\u4f1a\u76d1\u542c\u4e00\u4e2a\u7279\u5b9a\u7684\u7aef\u53e3&#xff0c;\u7b49\u5f85\u7ec4\u64ad\u6570\u636e\u5305\u7684\u5230\u6765&#xff0c;\u5e76\u5bf9\u6536\u5230\u7684\u6bcf\u4e2a\u6570\u636e\u5305\u8fdb\u884c\u5904\u7406\u3002 <\/p>\n<p> \u670d\u52a1\u5668\u7aef\u7684\u804c\u8d23\u4e3b\u8981\u5305\u62ec&#xff1a;\u76d1\u542c\u7ec4\u64ad\u5730\u5740\u548c\u7aef\u53e3&#xff0c;\u63a5\u6536\u6570\u636e\u5305&#xff0c;\u5e76\u53ef\u80fd\u5bf9\u6570\u636e\u8fdb\u884c\u5904\u7406&#xff0c;\u7136\u540e\u5c06\u6570\u636e\u8f6c\u53d1\u7ed9\u6240\u6709\u7ec4\u64ad\u6210\u5458\u3002\u670d\u52a1\u5668\u7aef\u9700\u8981\u786e\u4fdd\u6570\u636e\u5305\u7684\u6709\u5e8f\u548c\u53ef\u9760\u4f20\u9012&#xff0c;\u5c24\u5176\u662f\u5728\u6570\u636e\u5305\u4e22\u5931\u6216\u91cd\u4f20\u65f6\u3002 <\/p>\n<h4> 3.1.2 \u8bbe\u8ba1\u601d\u8def\u548c\u6b65\u9aa4\u6982\u8ff0 <\/h4>\n<p> \u670d\u52a1\u5668\u7aef\u7684\u8bbe\u8ba1\u601d\u8def\u4ece\u521b\u5efa\u4e00\u4e2a\u80fd\u591f\u76d1\u542c\u6307\u5b9a\u7ec4\u64ad\u5730\u5740\u548c\u7aef\u53e3\u7684UDP\u5957\u63a5\u5b57\u5f00\u59cb\u3002\u7136\u540e&#xff0c;\u670d\u52a1\u5668\u9700\u8981\u5b9e\u73b0\u6570\u636e\u5305\u7684\u63a5\u6536\u548c\u5904\u7406\u903b\u8f91&#xff0c;\u5305\u62ec&#xff1a; <\/p>\n<li> \u521d\u59cb\u5316\u5957\u63a5\u5b57\u5e76\u7ed1\u5b9a\u5230\u4e00\u4e2a\u5730\u5740\u548c\u7aef\u53e3\u3002 <\/li>\n<li> \u52a0\u5165\u7ec4\u64ad\u7ec4\u4ee5\u63a5\u6536\u7ec4\u64ad\u6d88\u606f\u3002 <\/li>\n<li> \u5faa\u73af\u63a5\u6536\u6765\u81ea\u7ec4\u64ad\u7ec4\u7684\u6570\u636e\u5305&#xff0c;\u5e76\u8fdb\u884c\u5fc5\u8981\u7684\u5904\u7406\u3002 <\/li>\n<li> \u5728\u5fc5\u8981\u65f6\u5bf9\u6570\u636e\u5305\u8fdb\u884c\u8f6c\u53d1\u6216\u54cd\u5e94\u3002 <\/li>\n<li> \u5b9e\u73b0\u8d44\u6e90\u7ba1\u7406\u548c\u9519\u8bef\u5904\u7406\u673a\u5236&#xff0c;\u786e\u4fdd\u7a0b\u5e8f\u7684\u5065\u58ee\u6027\u3002 <\/li>\n<h3> 3.2 \u670d\u52a1\u5668\u7aef\u5173\u952e\u4ee3\u7801\u903b\u8f91 <\/h3>\n<h4> 3.2.1 \u7ed1\u5b9a\u5957\u63a5\u5b57\u4e0e\u76d1\u542c <\/h4>\n<p> \u5728\u7f16\u5199\u670d\u52a1\u5668\u7aef\u4ee3\u7801\u65f6&#xff0c;\u7b2c\u4e00\u6b65\u662f\u521b\u5efa\u4e00\u4e2aUDP\u5957\u63a5\u5b57&#xff0c;\u5e76\u5c06\u5176\u7ed1\u5b9a\u5230\u6307\u5b9a\u7684\u7aef\u53e3\u4e0a\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528Winsock API\u5b9e\u73b0\u7ed1\u5b9a\u5957\u63a5\u5b57\u7684\u793a\u4f8b\u4ee3\u7801&#xff1a; <\/p>\n<p>#include &lt;winsock2.h&gt;<br \/>\n#include &lt;stdio.h&gt;<\/p>\n<p>#pragma comment(lib, &#034;ws2_32.lib&#034;) \/\/ Winsock Library<\/p>\n<p>int main() {<br \/>\n    WSADATA wsaData;<br \/>\n    SOCKET udpSocket;<br \/>\n    struct sockaddr_in serverAddr;<\/p>\n<p>    \/\/ \u521d\u59cb\u5316Winsock<br \/>\n    if (WSAStartup(MAKEWORD(2, 2), &amp;wsaData) !&#061; 0) {<br \/>\n        printf(&#034;WSAStartup failed.\\\\n&#034;);<br \/>\n        return 1;<br \/>\n    }<\/p>\n<p>    \/\/ \u521b\u5efaUDP\u5957\u63a5\u5b57<br \/>\n    udpSocket &#061; socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);<br \/>\n    if (udpSocket &#061;&#061; INVALID_SOCKET) {<br \/>\n        printf(&#034;Socket creation failed with error: %ld\\\\n&#034;, WSAGetLastError());<br \/>\n        WSACleanup();<br \/>\n        return 1;<br \/>\n    }<\/p>\n<p>    \/\/ \u8bbe\u7f6e\u670d\u52a1\u5668\u5730\u5740\u7ed3\u6784\u4f53<br \/>\n    serverAddr.sin_family &#061; AF_INET;<br \/>\n    serverAddr.sin_addr.s_addr &#061; INADDR_ANY;<br \/>\n    serverAddr.sin_port &#061; htons(8888); \/\/ \u4f7f\u75288888\u7aef\u53e3\u76d1\u542c<\/p>\n<p>    \/\/ \u7ed1\u5b9a\u5957\u63a5\u5b57\u5230\u6307\u5b9a\u7aef\u53e3<br \/>\n    if (bind(udpSocket, (struct sockaddr *)&amp;serverAddr, sizeof(serverAddr)) &#061;&#061; SOCKET_ERROR) {<br \/>\n        printf(&#034;Bind failed with error: %ld\\\\n&#034;, WSAGetLastError());<br \/>\n        closesocket(udpSocket);<br \/>\n        WSACleanup();<br \/>\n        return 1;<br \/>\n    }<\/p>\n<p>    \/\/ \u670d\u52a1\u5668\u7aef\u5957\u63a5\u5b57\u51c6\u5907\u5c31\u7eea&#xff0c;\u76d1\u542c\u6765\u81ea\u7ec4\u64ad\u7ec4\u7684UDP\u6570\u636e\u5305<br \/>\n    printf(&#034;UDP server started and listening on port 8888&#8230;\\\\n&#034;);<\/p>\n<p>    \/\/ \u4ee5\u4e0b\u662f\u63a5\u6536\u548c\u53d1\u9001\u6570\u636e\u7684\u4ee3\u7801\u903b\u8f91&#8230;<\/p>\n<p>    \/\/ \u6e05\u7406Winsock\u8d44\u6e90<br \/>\n    closesocket(udpSocket);<br \/>\n    WSACleanup();<br \/>\n    return 0;<br \/>\n}<\/p>\n<p> \u5728\u8fd9\u6bb5\u4ee3\u7801\u4e2d&#xff0c;\u6211\u4eec\u9996\u5148\u521d\u59cb\u5316Winsock&#xff0c;\u7136\u540e\u521b\u5efa\u4e86\u4e00\u4e2aUDP\u5957\u63a5\u5b57&#xff0c;\u5e76\u5c06\u5176\u7ed1\u5b9a\u5230\u4e86\u7aef\u53e38888\u4e0a\u3002\u670d\u52a1\u5668\u5730\u5740\u4f7f\u7528  INADDR_ANY  &#xff0c;\u8fd9\u5141\u8bb8\u5957\u63a5\u5b57\u63a5\u6536\u6765\u81ea\u6240\u6709\u7f51\u7edc\u63a5\u53e3\u7684\u6570\u636e\u5305\u3002\u4e00\u65e6\u7ed1\u5b9a\u5b8c\u6210&#xff0c;\u670d\u52a1\u5668\u5957\u63a5\u5b57\u5c31\u4f1a\u5f00\u59cb\u76d1\u542c\u8fdb\u5165\u7684UDP\u6570\u636e\u5305\u3002 <\/p>\n<h4> 3.2.2 \u63a5\u6536\u548c\u53d1\u9001\u7ec4\u64ad\u6d88\u606f <\/h4>\n<p> \u670d\u52a1\u5668\u7aef\u9700\u8981\u80fd\u591f\u63a5\u6536\u7ec4\u64ad\u6d88\u606f&#xff0c;\u5e76\u53ef\u80fd\u9700\u8981\u5c06\u63a5\u6536\u5230\u7684\u6d88\u606f\u8f6c\u53d1\u7ed9\u7ec4\u64ad\u7ec4\u5185\u7684\u6240\u6709\u6210\u5458\u3002\u4ee5\u4e0b\u662f\u793a\u4f8b\u4ee3\u7801&#xff0c;\u5c55\u793a\u4e86\u5982\u4f55\u63a5\u6536\u6d88\u606f\u5e76\u5c06\u6d88\u606f\u53d1\u9001\u7ed9\u7ec4\u64ad\u7ec4&#xff1a; <\/p>\n<p>\/\/ \u63a5\u6536\u6570\u636e\u7684\u7f13\u51b2\u533a<br \/>\nchar recvbuf[512];<br \/>\nstruct sockaddr_in clientAddr;<br \/>\nint clientAddrSize &#061; sizeof(clientAddr);<\/p>\n<p>\/\/ \u63a5\u6536\u7ec4\u64ad\u6d88\u606f<br \/>\nint bytesReceived &#061; recvfrom(udpSocket, recvbuf, sizeof(recvbuf), 0,<br \/>\n                              (struct sockaddr *)&amp;clientAddr, &amp;clientAddrSize);<br \/>\nif (bytesReceived &#061;&#061; SOCKET_ERROR) {<br \/>\n    printf(&#034;Error receiving data: %ld\\\\n&#034;, WSAGetLastError());<br \/>\n} else {<br \/>\n    recvbuf[bytesReceived] &#061; &#039;\\\\0&#039;; \/\/ \u786e\u4fdd\u5b57\u7b26\u4e32\u7ec8\u6b62<br \/>\n    printf(&#034;Received message: %s\\\\n&#034;, recvbuf);<br \/>\n    \/\/ \u5c06\u63a5\u6536\u5230\u7684\u6d88\u606f\u53d1\u9001\u7ed9\u7ec4\u64ad\u7ec4\u7684\u5176\u4ed6\u6210\u5458<br \/>\n    sendto(udpSocket, recvbuf, bytesReceived, 0,<br \/>\n           (struct sockaddr *)&amp;clientAddr, clientAddrSize);<br \/>\n}<\/p>\n<p> \u5728\u8fd9\u4e2a\u4ee3\u7801\u6bb5\u4e2d&#xff0c;  recvfrom  \u51fd\u6570\u7528\u4e8e\u63a5\u6536\u6570\u636e\u5305\u3002\u5b83\u586b\u5145\u4e86  recvbuf  \u7f13\u51b2\u533a&#xff0c;\u5e76\u63d0\u4f9b\u4e86\u53d1\u9001\u65b9\u7684\u5730\u5740\u548c\u7aef\u53e3\u4fe1\u606f\u3002\u63a5\u6536\u5230\u6570\u636e\u540e&#xff0c;\u670d\u52a1\u5668\u4f7f\u7528  sendto  \u51fd\u6570\u5c06\u76f8\u540c\u7684\u6d88\u606f\u53d1\u9001\u56de\u7ec4\u64ad\u7ec4&#xff0c;\u4ee5\u4fbf\u5176\u4ed6\u6210\u5458\u4e5f\u80fd\u6536\u5230\u6d88\u606f\u3002 <\/p>\n<h4> 3.2.3 \u9519\u8bef\u5904\u7406\u548c\u8d44\u6e90\u7ba1\u7406 <\/h4>\n<p> \u5728\u670d\u52a1\u5668\u7aef\u5b9e\u73b0\u4e2d&#xff0c;\u9519\u8bef\u5904\u7406\u548c\u8d44\u6e90\u7ba1\u7406\u81f3\u5173\u91cd\u8981&#xff0c;\u4ee5\u786e\u4fdd\u7a0b\u5e8f\u7684\u7a33\u5b9a\u6027\u548c\u53ef\u9760\u6027\u3002\u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d&#xff0c;\u4f7f\u7528\u4e86  WSAStartup  \u548c  WSACleanup  \u51fd\u6570\u6765\u521d\u59cb\u5316\u548c\u6e05\u7406Winsock\u8d44\u6e90\u3002  recvfrom  \u548c  sendto  \u51fd\u6570\u7684\u9519\u8bef\u68c0\u67e5\u662f\u901a\u8fc7\u68c0\u67e5\u8fd4\u56de\u503c\u662f\u5426\u7b49\u4e8e  SOCKET_ERROR  \u6765\u5b8c\u6210\u7684\u3002\u5982\u679c\u6709\u9519\u8bef\u53d1\u751f&#xff0c;\u5219\u4f1a\u6253\u5370\u51fa\u76f8\u5e94\u7684\u9519\u8bef\u4fe1\u606f\u3002\u6b64\u5916&#xff0c;\u5728\u7a0b\u5e8f\u9000\u51fa\u524d&#xff0c;\u4f7f\u7528  closesocket  \u51fd\u6570\u6765\u5173\u95ed\u5957\u63a5\u5b57&#xff0c;\u5e76\u91ca\u653e\u7cfb\u7edf\u8d44\u6e90\u3002 <\/p>\n<p> \u9519\u8bef\u5904\u7406\u548c\u8d44\u6e90\u7ba1\u7406\u4e0d\u4ec5\u9650\u4e8e\u4e0a\u8ff0\u64cd\u4f5c\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d&#xff0c;\u8fd8\u9700\u8981\u8003\u8651\u7f51\u7edc\u5ef6\u8fdf\u3001\u6570\u636e\u5305\u4e22\u5931\u3001\u7f13\u51b2\u533a\u6ea2\u51fa\u7b49\u95ee\u9898&#xff0c;\u5e76\u5b9e\u73b0\u76f8\u5e94\u7684\u5904\u7406\u673a\u5236&#xff0c;\u4ee5\u786e\u4fdd\u670d\u52a1\u5668\u7aef\u80fd\u591f\u7a33\u5b9a\u5730\u8fd0\u884c\u3002 <\/p>\n<p> | \u529f\u80fd | \u4ee3\u7801\u793a\u4f8b | | &#8212; | &#8212; | | \u521d\u59cb\u5316Winsock |  WSAStartup  | | \u521b\u5efaUDP\u5957\u63a5\u5b57 |  socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)  | | \u7ed1\u5b9a\u5957\u63a5\u5b57 |  bind  | | \u63a5\u6536\u6d88\u606f |  recvfrom  | | \u53d1\u9001\u6d88\u606f |  sendto  | | \u6e05\u7406\u5957\u63a5\u5b57 |  closesocket  | | \u6e05\u7406Winsock\u8d44\u6e90 |  WSACleanup  | <\/p>\n<p> \u9519\u8bef\u5904\u7406\u548c\u8d44\u6e90\u7ba1\u7406\u662f\u670d\u52a1\u5668\u7aef\u5b9e\u73b0\u4e2d\u4e0d\u53ef\u6216\u7f3a\u7684\u90e8\u5206&#xff0c;\u5b83\u4eec\u786e\u4fdd\u4e86\u7a0b\u5e8f\u5728\u9047\u5230\u5f02\u5e38\u60c5\u51b5\u65f6\u80fd\u591f\u9002\u5f53\u5730\u54cd\u5e94&#xff0c;\u5e76\u907f\u514d\u8d44\u6e90\u6cc4\u9732\u6216\u7a0b\u5e8f\u5d29\u6e83\u3002\u5728\u5f00\u53d1\u8fc7\u7a0b\u4e2d&#xff0c;\u5e94\u4e25\u683c\u9075\u5faa\u6700\u4f73\u5b9e\u8df5&#xff0c;\u5bf9\u6240\u6709\u53ef\u80fd\u7684\u9519\u8bef\u60c5\u51b5\u8fdb\u884c\u68c0\u67e5&#xff0c;\u5e76\u59a5\u5584\u5904\u7406\u3002\u8fd9\u4e0d\u4ec5\u63d0\u5347\u4e86\u4ee3\u7801\u7684\u5065\u58ee\u6027&#xff0c;\u800c\u4e14\u786e\u4fdd\u4e86\u5728\u9ad8\u8d1f\u8f7d\u6216\u7f51\u7edc\u6761\u4ef6\u4e0d\u4f73\u7684\u60c5\u51b5\u4e0b&#xff0c;\u670d\u52a1\u5668\u7aef\u4ecd\u7136\u80fd\u591f\u7a33\u5b9a\u8fd0\u884c\u3002 <\/p>\n<h2> 4. \u5ba2\u6237\u7aef\u5b9e\u73b0\u6b65\u9aa4\u4e0e\u4ee3\u7801\u903b\u8f91 <\/h2>\n<h3> 4.1 \u5ba2\u6237\u7aef\u6982\u5ff5\u548c\u8bbe\u8ba1 <\/h3>\n<h4> 4.1.1 \u5ba2\u6237\u7aef\u901a\u4fe1\u6a21\u578b <\/h4>\n<p> \u5728UDP\u7ec4\u64ad\u901a\u4fe1\u4e2d&#xff0c;\u5ba2\u6237\u7aef\u7684\u901a\u4fe1\u6a21\u578b\u4e0e\u5176\u5728\u7f51\u7edc\u4e2d\u7684\u89d2\u8272\u5bc6\u5207\u76f8\u5173\u3002\u5ba2\u6237\u7aef\u901a\u5e38\u4f5c\u4e3a\u7ec4\u64ad\u6d88\u606f\u7684\u63a5\u6536\u8005\u548c\u53d1\u9001\u8005\u3002\u4f5c\u4e3a\u63a5\u6536\u8005\u65f6&#xff0c;\u5ba2\u6237\u7aef\u9700\u8981\u52a0\u5165\u7279\u5b9a\u7684\u7ec4\u64ad\u7ec4&#xff0c;\u8fd9\u6837\u624d\u80fd\u63a5\u6536\u5230\u6765\u81ea\u7ec4\u64ad\u6e90\u7684\u6d88\u606f&#xff1b;\u4f5c\u4e3a\u53d1\u9001\u8005\u65f6&#xff0c;\u5ba2\u6237\u7aef\u5219\u5411\u8be5\u7ec4\u64ad\u7ec4\u53d1\u9001\u6570\u636e&#xff0c;\u4e0e\u5176\u4ed6\u5ba2\u6237\u7aef\u5171\u4eab\u4fe1\u606f\u3002 <\/p>\n<p> \u5ba2\u6237\u7aef\u901a\u4fe1\u6a21\u578b\u7684\u8bbe\u8ba1\u5305\u62ec&#xff1a; <\/p>\n<ul>\n<li>  \u52a0\u5165\u7ec4\u64ad\u7ec4  &#xff1a;\u5ba2\u6237\u7aef\u9700\u8981\u4f7f\u7528\u7ec4\u64ad\u5730\u5740\u548c\u7aef\u53e3\u6765\u52a0\u5165\u7ec4\u64ad\u7ec4\u3002\u8fd9\u6d89\u53ca\u5230\u64cd\u4f5c\u7cfb\u7edf\u7ea7\u522b\u7684\u7f51\u7edc\u63a5\u53e3\u914d\u7f6e\u3002 <\/li>\n<li>  \u76d1\u542c\u7ec4\u64ad\u6d88\u606f  &#xff1a;\u52a0\u5165\u7ec4\u64ad\u7ec4\u540e&#xff0c;\u5ba2\u6237\u7aef\u9700\u8981\u6301\u7eed\u76d1\u542c\u6765\u81ea\u7ec4\u64ad\u6e90\u7684\u6570\u636e\u5305\u3002 <\/li>\n<li>  \u53d1\u9001\u7ec4\u64ad\u6d88\u606f  &#xff1a;\u5ba2\u6237\u7aef\u5728\u67d0\u4e9b\u573a\u666f\u4e0b&#xff0c;\u6bd4\u5982\u4ea4\u4e92\u5f0f\u5e94\u7528&#xff0c;\u8fd8\u9700\u53d1\u9001\u6d88\u606f\u5230\u7ec4\u64ad\u7ec4\u4e2d\u3002 <\/li>\n<li>  \u7528\u6237\u754c\u9762\u4ea4\u4e92  &#xff1a;\u4e3a\u7528\u6237\u63d0\u4f9b\u4ea4\u4e92\u754c\u9762&#xff0c;\u5c55\u793a\u63a5\u6536\u5230\u7684\u6570\u636e\u4ee5\u53ca\u53d1\u9001\u6570\u636e\u7684\u80fd\u529b\u3002 <\/li>\n<\/ul>\n<h4> 4.1.2 \u8bbe\u8ba1\u601d\u8def\u548c\u6b65\u9aa4\u6982\u8ff0 <\/h4>\n<p> \u8bbe\u8ba1\u601d\u8def\u6d89\u53ca\u4ee5\u4e0b\u4e3b\u8981\u6b65\u9aa4&#xff1a; <\/p>\n<li> \u521d\u59cb\u5316Winsock\u73af\u5883\u3002 <\/li>\n<li> \u521b\u5efaUDP\u5957\u63a5\u5b57&#xff0c;\u5e76\u8bbe\u7f6e\u5957\u63a5\u5b57\u9009\u9879\u3002 <\/li>\n<li> \u52a0\u5165\u7ec4\u64ad\u7ec4\u3002 <\/li>\n<li> \u5b9e\u73b0\u6d88\u606f\u7684\u63a5\u6536\u548c\u53d1\u9001\u903b\u8f91\u3002 <\/li>\n<li> \u8bbe\u8ba1\u7528\u6237\u754c\u9762\u4e0e\u4e8b\u4ef6\u5904\u7406\u903b\u8f91\u3002 <\/li>\n<li> \u6e05\u7406\u8d44\u6e90\u5e76\u5173\u95ed\u5957\u63a5\u5b57\u3002 <\/li>\n<h3> 4.2 \u5ba2\u6237\u7aef\u5173\u952e\u4ee3\u7801\u903b\u8f91 <\/h3>\n<h4> 4.2.1 \u52a0\u5165\u548c\u79bb\u5f00\u7ec4\u64ad\u7ec4 <\/h4>\n<p> \u5728\u5ba2\u6237\u7aef\u4ee3\u7801\u4e2d&#xff0c;\u52a0\u5165\u548c\u79bb\u5f00\u7ec4\u64ad\u7ec4\u662f\u57fa\u7840\u64cd\u4f5c\u3002\u4ee5\u4e0b\u662f\u901a\u8fc7Winsock API\u5b9e\u73b0\u52a0\u5165\u7ec4\u64ad\u7ec4\u7684\u64cd\u4f5c\u4ee3\u7801&#xff1a; <\/p>\n<p>\/\/ \u7701\u7565&#xff1a;\u5934\u6587\u4ef6\u5f15\u7528&#xff0c;\u521d\u59cb\u5316Winsock<\/p>\n<p>\/\/ \u5047\u8bbe\u5df2\u7ecf\u521b\u5efa\u4e86UDP\u5957\u63a5\u5b57sock&#xff0c;\u5e76\u521d\u59cb\u5316\u4e3aIPv4<br \/>\nSOCKET sock &#061; socket(AF_INET, SOCK_DGRAM, 0);<\/p>\n<p>\/\/ \u5b9a\u4e49\u7ec4\u64ad\u5730\u5740\u548c\u7aef\u53e3<br \/>\nstruct ip_mreq mreq;<br \/>\nmreq.imr_multiaddr.s_addr &#061; inet_addr(&#034;239.255.255.250&#034;); \/\/ \u7ec4\u64ad\u5730\u5740<br \/>\nmreq.imr_interface.s_addr &#061; htonl(INADDR_ANY); \/\/ \u63a5\u53d7\u6240\u6709\u7f51\u7edc\u63a5\u53e3<\/p>\n<p>\/\/ \u52a0\u5165\u7ec4\u64ad\u7ec4<br \/>\nsetsockopt(sock, IPPROTO_IP, IP_ADD_MEMBERSHIP, (char*)&amp;mreq, sizeof(mreq));<\/p>\n<p>\/\/ &#8230; \u5ba2\u6237\u7aef\u63a5\u6536\u548c\u53d1\u9001\u6570\u636e\u7684\u903b\u8f91<\/p>\n<p>\/\/ \u79bb\u5f00\u7ec4\u64ad\u7ec4<br \/>\nsetsockopt(sock, IPPROTO_IP, IP_DROP_MEMBERSHIP, (char*)&amp;mreq, sizeof(mreq));<\/p>\n<p>\/\/ \u5173\u95ed\u5957\u63a5\u5b57<br \/>\nclosesocket(sock);<br \/>\nWSACleanup();<\/p>\n<p> \u8fd9\u6bb5\u4ee3\u7801\u5c55\u793a\u4e86\u5982\u4f55\u4f7f\u7528Winsock API\u4e2d\u7684  setsockopt  \u51fd\u6570&#xff0c;\u901a\u8fc7  IP_ADD_MEMBERSHIP  \u548c  IP_DROP_MEMBERSHIP  \u9009\u9879&#xff0c;\u5b9e\u73b0\u52a0\u5165\u548c\u79bb\u5f00\u7ec4\u64ad\u7ec4\u7684\u64cd\u4f5c\u3002  ip_mreq  \u7ed3\u6784\u4f53\u7528\u4e8e\u6307\u5b9a\u7ec4\u64ad\u5730\u5740\u548c\u7f51\u7edc\u63a5\u53e3\u3002 <\/p>\n<h4> 4.2.2 \u63a5\u6536\u548c\u53d1\u9001\u7ec4\u64ad\u6d88\u606f <\/h4>\n<p> \u63a5\u6536\u548c\u53d1\u9001\u7ec4\u64ad\u6d88\u606f\u662f\u5ba2\u6237\u7aef\u7684\u4e3b\u8981\u529f\u80fd\u3002\u4ee5\u4e0b\u662f\u63a5\u6536\u548c\u53d1\u9001\u6d88\u606f\u7684\u793a\u4f8b\u4ee3\u7801&#xff1a; <\/p>\n<p>\/\/ \u63a5\u6536\u6d88\u606f<br \/>\nchar recv_buf[1024];<br \/>\nstruct sockaddr_in fromAddr;<br \/>\nint fromSize &#061; sizeof(fromAddr);<\/p>\n<p>int bytes_received &#061; recvfrom(sock, recv_buf, sizeof(recv_buf), 0, (struct sockaddr*)&amp;fromAddr, &amp;fromSize);<\/p>\n<p>\/\/ \u53d1\u9001\u6d88\u606f<br \/>\nconst char *msg &#061; &#034;Hello, Multicast!&#034;;<br \/>\nint sent_bytes &#061; sendto(sock, msg, strlen(msg), 0, (struct sockaddr*)&amp;fromAddr, fromSize);<\/p>\n<p> \u4e0a\u8ff0\u4ee3\u7801\u4f7f\u7528  recvfrom  \u548c  sendto  \u51fd\u6570\u6765\u5904\u7406\u6d88\u606f\u7684\u63a5\u6536\u548c\u53d1\u9001\u3002\u6ce8\u610f&#xff0c;\u8fd9\u4e24\u8005\u90fd\u9700\u8981\u5bf9\u65b9\u7684\u5730\u5740\u4fe1\u606f\u4f5c\u4e3a\u53c2\u6570&#xff0c;\u4ee5\u4fbf\u6b63\u786e\u53d1\u9001\u548c\u63a5\u6536\u3002 <\/p>\n<h4> 4.2.3 \u7528\u6237\u754c\u9762\u4e0e\u4e8b\u4ef6\u5904\u7406 <\/h4>\n<p> \u5ba2\u6237\u7aef\u7684\u7528\u6237\u754c\u9762&#xff08;UI&#xff09;\u4e0e\u4e8b\u4ef6\u5904\u7406\u903b\u8f91\u662f\u63d0\u9ad8\u7528\u6237\u4f53\u9a8c\u7684\u5173\u952e\u3002\u901a\u5e38&#xff0c;\u5f00\u53d1\u8005\u4f1a\u4f7f\u7528\u67d0\u79cd\u56fe\u5f62\u5e93&#xff08;\u5982MFC\u3001WinForms\u7b49&#xff09;\u6765\u521b\u5efaUI&#xff0c;\u5e76\u4e3a\u7279\u5b9a\u4e8b\u4ef6&#xff08;\u5982\u6309\u94ae\u70b9\u51fb\u3001\u6d88\u606f\u63a5\u6536\u7b49&#xff09;\u6dfb\u52a0\u4e8b\u4ef6\u5904\u7406\u51fd\u6570\u3002\u8fd9\u4e9b\u4e8b\u4ef6\u5904\u7406\u51fd\u6570\u5c06\u8c03\u7528\u524d\u9762\u4ecb\u7ecd\u7684\u52a0\u5165\u7ec4\u64ad\u3001\u63a5\u6536\u53d1\u9001\u6d88\u606f\u7b49\u903b\u8f91\u3002 <\/p>\n<p> \u5728MFC\u4e2d&#xff0c;\u4e00\u4e2a\u7b80\u5355\u7684\u4e8b\u4ef6\u5904\u7406\u51fd\u6570\u53ef\u80fd\u770b\u8d77\u6765\u50cf\u8fd9\u6837&#xff1a; <\/p>\n<p>void CYourDialog::OnBnClickedJoinButton() \/\/ \u5047\u8bbe\u6309\u94aeID\u4e3aIDC_JOIN<br \/>\n{<br \/>\n    \/\/ &#8230;\u52a0\u5165\u7ec4\u64ad\u7ec4\u7684\u4ee3\u7801\u903b\u8f91<\/p>\n<p>    UpdateData(FALSE); \/\/ \u66f4\u65b0\u5bf9\u8bdd\u6846\u663e\u793a<br \/>\n}<\/p>\n<p>void CYourDialog::OnBnClickedLeaveButton() \/\/ \u5047\u8bbe\u6309\u94aeID\u4e3aIDC_LEAVE<br \/>\n{<br \/>\n    \/\/ &#8230;\u79bb\u5f00\u7ec4\u64ad\u7ec4\u7684\u4ee3\u7801\u903b\u8f91<\/p>\n<p>    UpdateData(FALSE); \/\/ \u66f4\u65b0\u5bf9\u8bdd\u6846\u663e\u793a<br \/>\n}<\/p>\n<p> \u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d&#xff0c;\u901a\u8fc7\u6309\u94ae\u70b9\u51fb\u89e6\u53d1\u52a0\u5165\u6216\u79bb\u5f00\u7ec4\u64ad\u7ec4\u7684\u884c\u4e3a\u3002  UpdateData  \u51fd\u6570\u7528\u4e8e\u66f4\u65b0\u5bf9\u8bdd\u6846\u7684\u663e\u793a&#xff0c;\u8fd9\u8868\u660e\u4e86\u7528\u6237\u754c\u9762\u4e0a\u7684\u72b6\u6001\u53d8\u5316\u3002 <\/p>\n<p> \u8fd9\u4e9b\u5173\u952e\u4ee3\u7801\u903b\u8f91\u7684\u5b9e\u73b0\u662f\u5ba2\u6237\u7aef\u80fd\u591f\u53c2\u4e0eUDP\u7ec4\u64ad\u901a\u4fe1\u7684\u57fa\u7840\u3002\u901a\u8fc7\u5408\u7406\u7684\u8bbe\u8ba1\u548c\u5b9e\u73b0&#xff0c;\u5ba2\u6237\u7aef\u80fd\u591f\u9ad8\u6548\u5730\u53c2\u4e0e\u5b9e\u65f6\u901a\u4fe1\u5e94\u7528&#xff0c;\u5b9e\u73b0\u6570\u636e\u7684\u53ca\u65f6\u63a5\u6536\u548c\u53d1\u9001\u3002 <\/p>\n<h2> 5. Windows\u73af\u5883\u4e0bUDP\u7ec4\u64ad\u901a\u4fe1\u7684\u5f00\u53d1\u6d41\u7a0b <\/h2>\n<h3> 5.1 \u5f00\u53d1\u73af\u5883\u7684\u642d\u5efa <\/h3>\n<h4> 5.1.1 \u5b89\u88c5Visual Studio\u548cSDK <\/h4>\n<p> \u5f00\u53d1Windows\u73af\u5883\u4e0bUDP\u7ec4\u64ad\u901a\u4fe1\u7684\u7a0b\u5e8f&#xff0c;\u9996\u5148\u9700\u8981\u642d\u5efa\u4e00\u4e2a\u5408\u9002\u7684\u5f00\u53d1\u73af\u5883\u3002\u4e3a\u6b64&#xff0c;\u63a8\u8350\u4f7f\u7528Microsoft\u7684Visual Studio\u96c6\u6210\u5f00\u53d1\u73af\u5883\u3002Visual Studio\u662f\u4e00\u4e2a\u529f\u80fd\u5f3a\u5927\u7684\u4ee3\u7801\u7f16\u8f91\u5668&#xff0c;\u5b83\u652f\u6301\u591a\u79cd\u7f16\u7a0b\u8bed\u8a00&#xff0c;\u5e76\u63d0\u4f9b\u4e30\u5bcc\u7684\u8c03\u8bd5\u548c\u5206\u6790\u5de5\u5177\u3002 <\/p>\n<p> \u5b89\u88c5Visual Studio\u524d&#xff0c;\u9700\u786e\u4fdd\u4f60\u7684\u8ba1\u7b97\u673a\u6ee1\u8db3\u4ee5\u4e0b\u914d\u7f6e\u8981\u6c42&#xff1a; <\/p>\n<ul>\n<li> \u64cd\u4f5c\u7cfb\u7edf&#xff1a;Windows 7\u6216\u66f4\u9ad8\u7248\u672c&#xff0c;\u63a8\u835064\u4f4d\u3002 <\/li>\n<li> CPU&#xff1a;\u81f3\u5c111.8GHz\u7684\u5904\u7406\u5668\u3002 <\/li>\n<li> \u5185\u5b58&#xff1a;\u81f3\u5c111GB RAM&#xff08;\u63a8\u83502GB\u6216\u66f4\u9ad8&#xff09;\u3002 <\/li>\n<li> \u786c\u76d8\u7a7a\u95f4&#xff1a;\u81f3\u5c11\u6709850MB\u7684\u53ef\u7528\u7a7a\u95f4\u3002 <\/li>\n<\/ul>\n<p> \u63a5\u4e0b\u6765&#xff0c;\u4e0b\u8f7d\u5e76\u5b89\u88c5Visual Studio\u3002\u8bbf\u95eeVisual Studio\u5b98\u7f51&#xff0c;\u9009\u62e9\u5408\u9002\u7684\u7248\u672c\u4e0b\u8f7d\u5b89\u88c5\u7a0b\u5e8f\u3002\u5b89\u88c5\u8fc7\u7a0b\u4e2d&#xff0c;\u53ef\u4ee5\u81ea\u5b9a\u4e49\u5b89\u88c5\u9009\u9879&#xff0c;\u6839\u636e\u9700\u8981\u9009\u62e9\u201c\u7f51\u7edc\u5f00\u53d1\u201d\u76f8\u5173\u7684\u5de5\u4f5c\u8d1f\u8f7d\u548c\u7ec4\u4ef6\u3002\u5bf9\u4e8eUDP\u7ec4\u64ad\u901a\u4fe1\u5f00\u53d1&#xff0c;\u786e\u4fdd\u9009\u62e9\u201c\u4f7f\u7528C&#043;&#043;\u7684\u684c\u9762\u5f00\u53d1\u201d\u5de5\u4f5c\u8d1f\u8f7d&#xff0c;\u5e76\u52fe\u9009\u201cWindows SDK\u201d\u3002 <\/p>\n<p> \u5b89\u88c5\u5b8c\u6210\u540e&#xff0c;\u91cd\u542f\u8ba1\u7b97\u673a\u4ee5\u786e\u4fdd\u6240\u6709\u7ec4\u4ef6\u6b63\u5e38\u5de5\u4f5c\u3002 <\/p>\n<h4> 5.1.2 \u914d\u7f6e\u5f00\u53d1\u73af\u5883 <\/h4>\n<p> \u914d\u7f6e\u5f00\u53d1\u73af\u5883\u5305\u62ec\u8bbe\u7f6e\u9879\u76ee\u5c5e\u6027\u3001\u5b89\u88c5\u989d\u5916\u7684\u8f6f\u4ef6\u5305\u4ee5\u53ca\u914d\u7f6e\u9879\u76ee\u4f9d\u8d56\u7b49\u3002\u5728Visual Studio\u4e2d\u521b\u5efa\u65b0\u9879\u76ee\u540e&#xff0c;\u9700\u8981\u8bbe\u7f6e\u9879\u76ee\u5c5e\u6027\u4ee5\u9002\u5e94UDP\u7ec4\u64ad\u7f16\u7a0b\u7684\u9700\u6c42\u3002 <\/p>\n<ul>\n<li> \u9009\u62e9\u9879\u76ee&#xff0c;\u7136\u540e\u53f3\u51fb\u4ee5\u6253\u5f00\u9879\u76ee\u5c5e\u6027\u3002 <\/li>\n<li> \u5728\u201c\u914d\u7f6e\u5c5e\u6027\u201d\u4e0b&#xff0c;\u9009\u62e9\u201cC\/C&#043;&#043;\u201d&#xff0c;\u7136\u540e\u914d\u7f6e\u8bed\u8a00\u6807\u51c6&#xff0c;\u786e\u4fdd\u9009\u62e9\u652f\u6301C&#043;&#043;11\u6216\u66f4\u9ad8\u7248\u672c\u7684\u9009\u9879\u3002 <\/li>\n<li> \u5728\u201c\u94fe\u63a5\u5668\u201d\u8bbe\u7f6e\u4e2d&#xff0c;\u914d\u7f6e\u201c\u8f93\u5165\u201d\u90e8\u5206\u7684\u9644\u52a0\u4f9d\u8d56\u9879&#xff0c;\u6839\u636e\u9879\u76ee\u9700\u8981\u6dfb\u52a0Winsock\u5e93&#xff08;\u4f8b\u5982&#xff0c;  ws2_32.lib  &#xff09;\u3002 <\/li>\n<\/ul>\n<p> \u786e\u4fdd\u914d\u7f6e\u597d\u73af\u5883\u540e&#xff0c;\u51c6\u5907\u7f16\u5199\u4ee3\u7801\u524d&#xff0c;\u68c0\u67e5\u5e76\u786e\u8ba4\u6240\u6709\u7684\u5e93\u548c\u5934\u6587\u4ef6\u90fd\u5df2\u6b63\u786e\u5f15\u5165\u3002\u5982\u679c\u9047\u5230\u4efb\u4f55\u7f16\u8bd1\u6216\u94fe\u63a5\u9519\u8bef&#xff0c;\u8bf7\u68c0\u67e5\u4ee5\u4e0a\u6b65\u9aa4\u662f\u5426\u6709\u9057\u6f0f\u6216\u8bbe\u7f6e\u4e0d\u5f53\u4e4b\u5904\u3002 <\/p>\n<h3> 5.2 \u5f00\u53d1\u6d41\u7a0b\u8be6\u89e3 <\/h3>\n<h4> 5.2.1 \u521b\u5efa\u9879\u76ee\u548c\u8bbe\u7f6e\u5c5e\u6027 <\/h4>\n<p> \u5728Visual Studio\u4e2d\u521b\u5efa\u4e00\u4e2a\u65b0\u7684Windows\u684c\u9762\u5e94\u7528\u7a0b\u5e8f\u9879\u76ee\u3002\u53ef\u4ee5\u662f\u63a7\u5236\u53f0\u5e94\u7528\u7a0b\u5e8f&#xff0c;\u4e5f\u53ef\u6839\u636e\u9700\u8981\u521b\u5efa\u56fe\u5f62\u7528\u6237\u754c\u9762&#xff08;GUI&#xff09;\u9879\u76ee\u3002\u521b\u5efa\u9879\u76ee\u540e&#xff0c;\u4e3aUDP\u7ec4\u64ad\u901a\u4fe1\u505a\u7279\u5b9a\u8bbe\u7f6e&#xff1a; <\/p>\n<ul>\n<li> \u4e3a\u9879\u76ee\u6dfb\u52a0\u5fc5\u8981\u7684\u5934\u6587\u4ef6&#xff0c;\u5982\u5305\u542bWinsock\u51fd\u6570\u58f0\u660e\u7684  &lt;winsock2.h&gt;  \u3002 <\/li>\n<li> \u8bbe\u7f6e\u9879\u76ee\u4e3a\u591a\u7ebf\u7a0b&#xff08;MT&#xff09;\u6a21\u5f0f&#xff0c;\u4ee5\u907f\u514d\u6f5c\u5728\u7684\u7ebf\u7a0b\u5b89\u5168\u95ee\u9898\u3002 <\/li>\n<li> \u6dfb\u52a0\u5f02\u5e38\u5904\u7406\u4ee3\u7801&#xff0c;\u4ee5\u5904\u7406\u53ef\u80fd\u51fa\u73b0\u7684\u7f51\u7edc\u5f02\u5e38\u60c5\u51b5\u3002 <\/li>\n<\/ul>\n<p> \u63a5\u4e0b\u6765&#xff0c;\u521d\u59cb\u5316Winsock\u5e93&#xff0c;\u8fd9\u662f\u4f7f\u7528\u4efb\u4f55\u7f51\u7edc\u529f\u80fd\u524d\u7684\u5fc5\u8981\u6b65\u9aa4\u3002\u521d\u59cb\u5316\u4ee3\u7801\u901a\u5e38\u5982\u4e0b&#xff1a; <\/p>\n<p>WSADATA wsaData;<br \/>\nint result &#061; WSAStartup(MAKEWORD(2,2), &amp;wsaData);<br \/>\nif (result !&#061; 0) {<br \/>\n    \/\/ \u9519\u8bef\u5904\u7406\u903b\u8f91<br \/>\n}<\/p>\n<h4> 5.2.2 \u7f16\u5199\u4ee3\u7801\u548c\u8c03\u8bd5\u8fc7\u7a0b <\/h4>\n<p> \u7f16\u5199\u4ee3\u7801\u662f\u5f00\u53d1\u6d41\u7a0b\u4e2d\u7684\u6838\u5fc3\u73af\u8282\u3002\u5bf9\u4e8eUDP\u7ec4\u64ad\u901a\u4fe1&#xff0c;\u9700\u8981\u7f16\u5199\u670d\u52a1\u5668\u7aef\u548c\u5ba2\u6237\u7aef\u4ee3\u7801&#xff0c;\u5904\u7406\u7f51\u7edc\u4e8b\u4ef6&#xff0c;\u5e76\u786e\u4fdd\u6570\u636e\u6b63\u786e\u5730\u5728\u5404\u7aef\u4e4b\u95f4\u4f20\u8f93\u3002 <\/p>\n<p> \u9996\u5148&#xff0c;\u521b\u5efa\u5e76\u914d\u7f6eUDP\u5957\u63a5\u5b57\u3002\u8fd9\u6d89\u53ca\u9009\u62e9\u5408\u9002\u7684IP\u5730\u5740\u7c7b\u578b&#xff08;IPv4\u6216IPv6&#xff09;&#xff0c;\u521d\u59cb\u5316\u5957\u63a5\u5b57&#xff0c;\u5e76\u5c06\u5176\u7ed1\u5b9a\u5230\u4e00\u4e2a\u7aef\u53e3\u4e0a&#xff1a; <\/p>\n<p>SOCKET udpSocket &#061; socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);<br \/>\nsockaddr_in udpAddr;<br \/>\nudpAddr.sin_family &#061; AF_INET;<br \/>\nudpAddr.sin_port &#061; htons(7777); \/\/ \u6307\u5b9a\u7aef\u53e3\u53f7<br \/>\nudpAddr.sin_addr.s_addr &#061; INADDR_ANY; \/\/ \u5141\u8bb8\u63a5\u6536\u6765\u81ea\u4efb\u4f55IP\u7684\u6570\u636e<\/p>\n<p>bind(udpSocket, (sockaddr*)&amp;udpAddr, sizeof(udpAddr));<\/p>\n<p> \u7136\u540e&#xff0c;\u5728\u670d\u52a1\u5668\u7aef\u548c\u5ba2\u6237\u7aef\u4e0a\u5b9e\u73b0\u7ec4\u64ad\u5730\u5740\u548c\u7aef\u53e3\u7684\u8bbe\u7f6e\u3001\u7ec4\u64ad\u6210\u5458\u7ba1\u7406\u51fd\u6570\u3002\u670d\u52a1\u5668\u7aef\u9700\u8981\u76d1\u542c\u7ec4\u64ad\u6d88\u606f\u5e76\u53ef\u80fd\u53d1\u9001\u54cd\u5e94&#xff0c;\u5ba2\u6237\u7aef\u5219\u8d1f\u8d23\u52a0\u5165\u548c\u79bb\u5f00\u7ec4\u64ad\u7ec4&#xff0c;\u4ee5\u53ca\u53d1\u9001\u548c\u63a5\u6536\u6d88\u606f\u3002 <\/p>\n<p> \u8c03\u8bd5\u4ee3\u7801\u4ee5\u786e\u4fdd\u6b63\u786e\u6027\u548c\u6027\u80fd\u81f3\u5173\u91cd\u8981\u3002Visual Studio\u63d0\u4f9b\u5f3a\u5927\u7684\u8c03\u8bd5\u5de5\u5177&#xff0c;\u5305\u62ec\u65ad\u70b9\u3001\u5355\u6b65\u6267\u884c\u3001\u8c03\u7528\u5806\u6808\u67e5\u770b\u3001\u53d8\u91cf\u76d1\u89c6\u7b49\u3002 <\/p>\n<h4> 5.2.3 \u6d4b\u8bd5\u548c\u6027\u80fd\u4f18\u5316 <\/h4>\n<p> \u4ee3\u7801\u7f16\u5199\u5b8c\u6210\u540e&#xff0c;\u8fdb\u884c\u6d4b\u8bd5\u4ee5\u786e\u4fdd\u5176\u6309\u9884\u671f\u5de5\u4f5c\u3002\u6d4b\u8bd5\u5305\u62ec\u5355\u5143\u6d4b\u8bd5\u3001\u96c6\u6210\u6d4b\u8bd5\u548c\u7cfb\u7edf\u6d4b\u8bd5\u3002\u521b\u5efa\u6d4b\u8bd5\u5957\u4ef6\u4ee5\u9a8c\u8bc1\u5404\u4e2a\u529f\u80fd\u6a21\u5757\u3002\u5bf9\u4e8e\u6027\u80fd\u6d4b\u8bd5&#xff0c;\u6d4b\u91cf\u54cd\u5e94\u65f6\u95f4\u3001\u541e\u5410\u91cf\u548c\u8d44\u6e90\u4f7f\u7528\u60c5\u51b5&#xff0c;\u786e\u4fdd\u901a\u4fe1\u8fc7\u7a0b\u7b26\u5408\u5b9e\u65f6\u5e94\u7528\u7684\u9700\u6c42\u3002 <\/p>\n<p> \u5728\u9a8c\u8bc1\u529f\u80fd\u6b63\u786e\u6027\u540e&#xff0c;\u8fdb\u884c\u6027\u80fd\u4f18\u5316\u3002\u6839\u636e\u6d4b\u8bd5\u7ed3\u679c&#xff0c;\u53ef\u80fd\u9700\u8981\u8c03\u6574\u7b97\u6cd5\u3001\u51cf\u5c11\u4e0d\u5fc5\u8981\u7684\u7cfb\u7edf\u8c03\u7528\u3001\u5229\u7528\u591a\u7ebf\u7a0b\u5904\u7406I\/O\u64cd\u4f5c\u7b49\u3002 <\/p>\n<p>\/\/ \u793a\u4f8b&#xff1a;\u4f7f\u7528\u591a\u7ebf\u7a0b\u63a5\u6536\u6d88\u606f<br \/>\nvoid ReceiveMessages(SOCKET sock) {<br \/>\n    while (true) {<br \/>\n        char buffer[1024];<br \/>\n        sockaddr_in senderAddr;<br \/>\n        int senderAddrSize &#061; sizeof(senderAddr);<br \/>\n        int received &#061; recvfrom(sock, buffer, sizeof(buffer), 0,<br \/>\n                                (sockaddr*)&amp;senderAddr, &amp;senderAddrSize);<br \/>\n        if (received &gt; 0) {<br \/>\n            \/\/ \u5904\u7406\u63a5\u6536\u5230\u7684\u6570\u636e<br \/>\n        }<br \/>\n    }<br \/>\n}<\/p>\n<p> \u6839\u636e\u9700\u8981\u5bf9\u4ee3\u7801\u8fdb\u884c\u5fae\u8c03&#xff0c;\u4ee5\u63d0\u9ad8\u6027\u80fd\u548c\u7a33\u5b9a\u6027\u3002\u6027\u80fd\u4f18\u5316\u5b8c\u6210\u540e&#xff0c;\u53ef\u90e8\u7f72\u5e94\u7528\u7a0b\u5e8f\u5230\u751f\u4ea7\u73af\u5883\u3002\u5728\u90e8\u7f72\u524d&#xff0c;\u8fdb\u884c\u5f7b\u5e95\u7684\u6d4b\u8bd5&#xff0c;\u786e\u4fdd\u5728\u4e0d\u540c\u73af\u5883\u4e0b\u7a0b\u5e8f\u90fd\u80fd\u7a33\u5b9a\u8fd0\u884c\u3002 <\/p>\n<h3> 5.3 \u5b9e\u9645\u6848\u4f8b\u5206\u6790 <\/h3>\n<h4> 5.3.1 \u5b9e\u9645\u5e94\u7528\u573a\u666f <\/h4>\n<p> \u5f00\u53d1Windows\u73af\u5883\u4e0bUDP\u7ec4\u64ad\u901a\u4fe1\u7a0b\u5e8f\u65f6&#xff0c;\u5e94\u5f53\u8003\u8651\u5230\u5b9e\u9645\u5e94\u7528\u573a\u666f\u7684\u7279\u6b8a\u8981\u6c42\u3002\u8fd9\u53ef\u80fd\u5305\u62ec\u5b9e\u65f6\u6570\u636e\u91c7\u96c6\u3001\u5206\u5e03\u5f0f\u7cfb\u7edf\u901a\u4fe1\u3001\u591a\u73a9\u5bb6\u5728\u7ebf\u6e38\u620f\u7b49\u3002\u6bcf\u4e2a\u5e94\u7528\u90fd\u6709\u5176\u7279\u5b9a\u7684\u9700\u6c42\u548c\u6311\u6218&#xff0c;\u56e0\u6b64\u5f00\u53d1\u6d41\u7a0b\u9700\u8981\u8fdb\u884c\u76f8\u5e94\u7684\u8c03\u6574\u3002 <\/p>\n<p> \u4ee5\u591a\u73a9\u5bb6\u5728\u7ebf\u6e38\u620f\u4e3a\u4f8b&#xff0c;\u6e38\u620f\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u7aef\u9700\u8981\u5b9e\u65f6\u540c\u6b65\u6e38\u620f\u72b6\u6001&#xff0c;\u56e0\u6b64\u5ef6\u8fdf\u4f4e\u3001\u6570\u636e\u4e00\u81f4\u6027\u8981\u6c42\u9ad8\u3002\u4e3a\u4fdd\u8bc1\u901a\u4fe1\u7684\u9ad8\u6548\u6027\u548c\u53ef\u9760\u6027&#xff0c;\u53ef\u80fd\u9700\u8981\u5f15\u5165\u989d\u5916\u7684\u534f\u8bae\u673a\u5236\u6765\u4fdd\u8bc1\u6570\u636e\u7684\u5b8c\u6574\u6027\u548c\u6392\u5e8f&#xff0c;\u4f8b\u5982\u4f7f\u7528\u5e8f\u5217\u53f7\u3002 <\/p>\n<h4> 5.3.2 \u6027\u80fd\u8003\u91cf <\/h4>\n<p> \u5728\u5b9e\u9645\u5e94\u7528\u4e2d&#xff0c;\u6027\u80fd\u662f\u4e00\u4e2a\u9700\u8981\u91cd\u70b9\u5173\u6ce8\u7684\u56e0\u7d20\u3002UDP\u7ec4\u64ad\u901a\u4fe1\u7684\u6027\u80fd\u8003\u91cf\u5305\u62ec&#xff1a; <\/p>\n<ul>\n<li> \u6570\u636e\u5305\u7684\u5927\u5c0f\u548c\u9891\u7387&#xff0c;\u4ee5\u907f\u514d\u7f51\u7edc\u62e5\u585e\u3002 <\/li>\n<li> \u5e76\u53d1\u5904\u7406\u7684\u80fd\u529b&#xff0c;\u7279\u522b\u662f\u5728\u670d\u52a1\u5668\u7aef&#xff0c;\u9700\u8981\u80fd\u591f\u540c\u65f6\u5904\u7406\u591a\u4e2a\u5ba2\u6237\u7aef\u7684\u6570\u636e\u3002 <\/li>\n<li> \u7f51\u7edc\u6296\u52a8\u548c\u4e22\u5305\u7684\u5904\u7406\u7b56\u7565&#xff0c;\u4ee5\u786e\u4fdd\u5e94\u7528\u7684\u9c81\u68d2\u6027\u3002 <\/li>\n<\/ul>\n<h4> 5.3.3 \u5b89\u5168\u6027\u548c\u517c\u5bb9\u6027 <\/h4>\n<p> \u6700\u540e&#xff0c;\u5b89\u5168\u6027\u548c\u517c\u5bb9\u6027\u4e5f\u662f\u5f00\u53d1\u8fc7\u7a0b\u4e2d\u4e0d\u53ef\u5ffd\u89c6\u7684\u90e8\u5206\u3002\u4e3a\u9632\u6b62\u7f51\u7edc\u653b\u51fb&#xff0c;\u53ef\u80fd\u9700\u8981\u5b9e\u73b0\u8eab\u4efd\u9a8c\u8bc1\u548c\u6570\u636e\u52a0\u5bc6\u673a\u5236\u3002\u5728\u8bbe\u8ba1\u534f\u8bae\u65f6&#xff0c;\u8fd8\u9700\u786e\u4fdd\u517c\u5bb9\u6027&#xff0c;\u4f7f\u5176\u80fd\u591f\u5728\u4e0d\u540c\u7248\u672c\u7684Windows\u64cd\u4f5c\u7cfb\u7edf\u4ee5\u53ca\u7f51\u7edc\u73af\u5883\u4e2d\u6b63\u5e38\u5de5\u4f5c\u3002 <\/p>\n<p> \u901a\u8fc7\u7efc\u5408\u8003\u8651\u4ee5\u4e0a\u5404\u65b9\u9762\u7684\u56e0\u7d20&#xff0c;\u5f00\u53d1\u8005\u80fd\u591f\u521b\u5efa\u51fa\u65e2\u9ad8\u6548\u53c8\u53ef\u9760\u7684UDP\u7ec4\u64ad\u901a\u4fe1\u5e94\u7528\u7a0b\u5e8f\u3002 <\/p>\n<h2> 6. Visual Studio\u9879\u76ee\u6587\u4ef6\u7ed3\u6784\u4e0e\u4f5c\u7528 <\/h2>\n<p> \u5728\u5f00\u53d1\u590d\u6742\u7684\u7f51\u7edc\u5e94\u7528\u7a0b\u5e8f\u65f6&#xff0c;\u5408\u7406\u5730\u7ec4\u7ec7\u9879\u76ee\u7684\u6587\u4ef6\u7ed3\u6784\u5bf9\u4e8e\u786e\u4fdd\u4ee3\u7801\u7684\u53ef\u7ef4\u62a4\u6027\u3001\u53ef\u8bfb\u6027\u548c\u6027\u80fd\u81f3\u5173\u91cd\u8981\u3002Visual Studio \u63d0\u4f9b\u4e86\u4e00\u4e2a\u96c6\u6210\u7684\u5f00\u53d1\u73af\u5883&#xff0c;\u4f7f\u5f00\u53d1\u8005\u80fd\u591f\u9ad8\u6548\u5730\u7ba1\u7406\u5927\u578b\u9879\u76ee\u3002\u672c\u7ae0\u5c06\u6df1\u5165\u63a2\u8ba8 Visual Studio \u9879\u76ee\u6587\u4ef6\u7ed3\u6784&#xff0c;\u5e76\u5206\u6790\u9879\u76ee\u4e2d\u5404\u4e2a\u5173\u952e\u6587\u4ef6\u7684\u4f5c\u7528\u3002 <\/p>\n<h3> 6.1 Visual Studio\u9879\u76ee\u7ed3\u6784\u89e3\u6790 <\/h3>\n<p> Visual Studio \u4f7f\u7528\u89e3\u51b3\u65b9\u6848&#xff08;Solution&#xff09;\u4f5c\u4e3a\u9879\u76ee\u7684\u5bb9\u5668&#xff0c;\u800c\u89e3\u51b3\u65b9\u6848\u4e2d\u53ef\u4ee5\u5305\u542b\u591a\u4e2a\u9879\u76ee&#xff08;Project&#xff09;\u3002\u6bcf\u4e2a\u9879\u76ee\u90fd\u6709\u81ea\u5df1\u7684\u6587\u4ef6\u548c\u6587\u4ef6\u5939\u7ed3\u6784&#xff0c;\u8fd9\u4e9b\u6587\u4ef6\u548c\u6587\u4ef6\u5939\u5171\u540c\u7ec4\u6210\u4e86\u9879\u76ee\u7684\u6587\u4ef6\u7ed3\u6784\u3002 <\/p>\n<h4> 6.1.1 \u6807\u51c6\u9879\u76ee\u6587\u4ef6\u548c\u76ee\u5f55 <\/h4>\n<ul>\n<li>  \u6e90\u4ee3\u7801\u6587\u4ef6\u5939  (  Source Files  )&#xff1a;\u5b58\u653e\u6240\u6709\u7684  .cpp  \u3001  .h  \u6587\u4ef6&#xff0c;\u8fd9\u4e9b\u6587\u4ef6\u5305\u542b\u4e86\u5e94\u7528\u7a0b\u5e8f\u7684\u6e90\u4ee3\u7801\u3002 <\/li>\n<li>  \u5934\u6587\u4ef6\u5939  (  Header Files  )&#xff1a;\u5b58\u653e\u5934\u6587\u4ef6  .h  &#xff0c;\u901a\u5e38\u5b9a\u4e49\u7c7b\u3001\u51fd\u6570\u548c\u5b8f\u7b49\u3002 <\/li>\n<li>  \u8d44\u6e90\u6587\u4ef6\u5939  (  Resource Files  )&#xff1a;\u5b58\u653e  .rc  \u6587\u4ef6\u548c\u5176\u4ed6\u8d44\u6e90\u6587\u4ef6&#xff0c;\u4f8b\u5982\u56fe\u6807\u3001\u83dc\u5355\u3001\u5bf9\u8bdd\u6846\u8d44\u6e90\u7b49\u3002 <\/li>\n<li>  \u9884\u7f16\u8bd1\u5934\u6587\u4ef6  (  Precompiled Header  )&#xff1a;\u5b58\u653e\u9884\u7f16\u8bd1\u7684\u5934\u6587\u4ef6&#xff0c;\u901a\u5e38\u547d\u540d\u4e3a  StdAfx.h  \u548c  StdAfx.cpp  \u3002 <\/li>\n<li>  \u9879\u76ee\u6587\u4ef6  (  Project Files  )&#xff1a;\u5305\u542b  .vcxproj  \u6587\u4ef6&#xff0c;\u8fd9\u662fVisual Studio \u7528\u6765\u5b9a\u4e49\u9879\u76ee\u7684\u5143\u6570\u636e\u6587\u4ef6&#xff0c;\u5305\u62ec\u7f16\u8bd1\u9009\u9879\u3001\u9879\u76ee\u4f9d\u8d56\u7b49\u3002 <\/li>\n<li>  \u89e3\u51b3\u65b9\u6848\u6587\u4ef6  (  Solution File  )&#xff1a;\u901a\u5e38\u4ee5  .sln  \u7ed3\u5c3e&#xff0c;\u5305\u542b\u4e86\u5173\u4e8e\u89e3\u51b3\u65b9\u6848\u548c\u9879\u76ee\u7684\u4fe1\u606f&#xff0c;\u5982\u9879\u76ee\u95f4\u5173\u7cfb\u3001\u9879\u76ee\u5c5e\u6027\u7b49\u3002 <\/li>\n<\/ul>\n<h4> 6.1.2 \u6587\u4ef6\u7684\u7ec4\u7ec7\u548c\u4f9d\u8d56\u5173\u7cfb <\/h4>\n<p> \u5728\u5927\u578b\u9879\u76ee\u4e2d&#xff0c;\u7ec4\u7ec7\u6587\u4ef6\u7684\u4f9d\u8d56\u5173\u7cfb\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002Visual Studio \u5141\u8bb8\u5f00\u53d1\u8005\u8bbe\u7f6e\u9879\u76ee\u4f9d\u8d56&#xff0c;\u4ee5\u4fbf\u6b63\u786e\u7f16\u8bd1\u9879\u76ee\u3002\u4f8b\u5982&#xff0c;\u5728\u5305\u542b\u591a\u4e2a\u6a21\u5757\u6216\u5e93\u7684\u9879\u76ee\u4e2d&#xff0c;\u4f60\u53ef\u80fd\u9700\u8981\u5148\u7f16\u8bd1\u5e93\u6a21\u5757&#xff0c;\u7136\u540e\u7f16\u8bd1\u4f7f\u7528\u8fd9\u4e9b\u5e93\u7684\u5176\u4ed6\u6a21\u5757\u3002 <\/p>\n<h3> 6.2 \u6587\u4ef6\u7ed3\u6784\u4e2d\u7684\u5173\u952e\u6587\u4ef6\u4f5c\u7528 <\/h3>\n<p> \u7406\u89e3\u9879\u76ee\u4e2d\u6bcf\u4e2a\u6587\u4ef6\u7684\u4f5c\u7528\u662f\u5341\u5206\u91cd\u8981\u7684&#xff0c;\u5b83\u6709\u52a9\u4e8e\u6211\u4eec\u66f4\u597d\u5730\u7ef4\u62a4\u548c\u6269\u5c55\u4ee3\u7801\u3002 <\/p>\n<h4> 6.2.1 \u6e90\u4ee3\u7801\u6587\u4ef6 <\/h4>\n<p>  \u6e90\u4ee3\u7801\u6587\u4ef6  \u901a\u5e38\u662f  .cpp  \u6587\u4ef6&#xff0c;\u5b83\u4eec\u5305\u542b\u4e86\u5b9e\u9645\u7684 C&#043;&#043; \u4ee3\u7801\u3002\u8fd9\u4e9b\u6587\u4ef6\u8d1f\u8d23\u5b9e\u73b0\u5e94\u7528\u7a0b\u5e8f\u7684\u529f\u80fd\u903b\u8f91\u3002\u4f8b\u5982&#xff1a; <\/p>\n<p>\/\/ main.cpp<br \/>\n#include &#034;stdafx.h&#034;<br \/>\n#include &lt;iostream&gt;<\/p>\n<p>int main() {<br \/>\n    std::cout &lt;&lt; &#034;Hello, Visual Studio!&#034; &lt;&lt; std::endl;<br \/>\n    return 0;<br \/>\n}<\/p>\n<p> \u8be5  main.cpp  \u6587\u4ef6\u662f\u7a0b\u5e8f\u7684\u5165\u53e3\u70b9&#xff0c;\u5b83\u8c03\u7528\u4e86  #include &#034;stdafx.h&#034;  &#xff0c;\u8fd9\u662f\u4e00\u4e2a\u9884\u7f16\u8bd1\u5934\u6587\u4ef6&#xff0c;\u7528\u4e8e\u51cf\u5c11\u7f16\u8bd1\u65f6\u95f4\u3002 <\/p>\n<h4> 6.2.2 \u8d44\u6e90\u6587\u4ef6 <\/h4>\n<p>  \u8d44\u6e90\u6587\u4ef6  \u662f\u9879\u76ee\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206&#xff0c;\u5b83\u4eec\u5b9a\u4e49\u4e86\u7a0b\u5e8f\u7528\u6237\u754c\u9762\u7684\u6240\u6709\u975e\u4ee3\u7801\u5143\u7d20&#xff0c;\u5982\u5bf9\u8bdd\u6846\u3001\u83dc\u5355\u680f\u7b49\u3002\u4f8b\u5982&#xff0c;\u4e00\u4e2a\u7b80\u5355\u7684\u8d44\u6e90\u6587\u4ef6  resource.rc  \u53ef\u80fd\u5982\u4e0b\u6240\u793a&#xff1a; <\/p>\n<p>\/\/ resource.rc<br \/>\n#include &#034;resource.h&#034;<\/p>\n<p>\/\/ Dialog<br \/>\nIDD_MYDIALOG DIALOGEX 0, 0, 210, 150<br \/>\nBEGIN<br \/>\n    \/\/ Control definitions<br \/>\nEND<\/p>\n<p> \u8fd9\u4e2a\u6587\u4ef6\u5b9a\u4e49\u4e86\u4e00\u4e2a\u5bf9\u8bdd\u6846&#xff0c;\u5176\u4e2d\u5305\u542b\u4e86\u63a7\u4ef6\u5b9a\u4e49\u3002 <\/p>\n<h4> 6.2.3 \u914d\u7f6e\u6587\u4ef6\u548c\u9879\u76ee\u6587\u4ef6 <\/h4>\n<p>  \u914d\u7f6e\u6587\u4ef6  \u548c  \u9879\u76ee\u6587\u4ef6  \u5b9a\u4e49\u4e86\u5e94\u7528\u7a0b\u5e8f\u7684\u7f16\u8bd1\u548c\u94fe\u63a5\u8bbe\u7f6e\u3002\u8fd9\u4e9b\u8bbe\u7f6e\u5728  .vcxproj  \u6587\u4ef6\u4e2d\u6307\u5b9a&#xff0c;\u5e76\u4e14\u53ef\u4ee5\u901a\u8fc7 Visual Studio \u7684\u56fe\u5f62\u7528\u6237\u754c\u9762&#xff08;GUI&#xff09;\u8fdb\u884c\u4fee\u6539\u3002\u4f8b\u5982&#xff0c;  .vcxproj  \u6587\u4ef6\u4e2d\u53ef\u80fd\u5305\u542b\u5982\u4e0b\u914d\u7f6e\u4fe1\u606f&#xff1a; <\/p>\n<p>&lt;Project DefaultTargets&#061;&#034;Build&#034; xmlns&#061;&#034;http:\/\/schemas.microsoft.com\/developer\/msbuild\/2003&#034;&gt;<br \/>\n  &lt;Import Project&#061;&#034;$(VCTargetPath)\\\\Microsoft.Cpp.Default.props&#034; \/&gt;<br \/>\n  &lt;PropertyGroup Condition&#061;&#034;&#039;$(Configuration)|$(Platform)&#039;&#061;&#061;&#039;Debug|Win32&#039;&#034; Label&#061;&#034;Configuration&#034;&gt;<br \/>\n    &lt;PlatformToolset&gt;v142&lt;\/PlatformToolset&gt;<br \/>\n    &lt;ConfigurationType&gt;Application&lt;\/ConfigurationType&gt;<br \/>\n    &lt;UseDebugLibraries&gt;true&lt;\/UseDebugLibraries&gt;<br \/>\n  &lt;\/PropertyGroup&gt;<br \/>\n  &lt;!&#8211; Additional settings &#8211;&gt;<br \/>\n&lt;\/Project&gt;<\/p>\n<p> \u8fd9\u4e2a\u914d\u7f6e\u6307\u660e\u4e86\u76ee\u6807\u5e73\u53f0\u3001\u7f16\u8bd1\u5de5\u5177\u96c6\u4ee5\u53ca\u5e94\u7528\u7a0b\u5e8f\u7c7b\u578b\u7b49\u4fe1\u606f\u3002 <\/p>\n<p> \u901a\u8fc7\u7406\u89e3 Visual Studio \u7684\u9879\u76ee\u7ed3\u6784\u548c\u5173\u952e\u6587\u4ef6\u7684\u4f5c\u7528&#xff0c;\u5f00\u53d1\u8005\u53ef\u4ee5\u66f4\u6709\u6548\u5730\u7ba1\u7406\u81ea\u5df1\u7684\u4ee3\u7801&#xff0c;\u66f4\u597d\u5730\u7ec4\u7ec7\u9879\u76ee\u8d44\u6e90&#xff0c;\u4ece\u800c\u6784\u5efa\u51fa\u9ad8\u6027\u80fd\u3001\u53ef\u7ef4\u62a4\u7684\u8f6f\u4ef6\u4ea7\u54c1\u3002 <\/p>\n<h2> 7. 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