1.1 TCP\/IP\u534f\u8bae\u7ec4<\/p><\/blockquote>\n\n\n\n
TCP\/IP\u534f\u8bae\uff08\u4f20\u8f93\u63a7\u5236\u534f\u8bae\uff09\u7531\u7f51\u7edc\u5c42\u7684IP\u534f\u8bae\u548c\u4f20\u8f93\u5c42\u7684TCP\u534f\u8bae\u7ec4\u6210\u3002<\/p>\n\n\n\n
IP\u5c42\u8d1f\u8d23\u7f51\u7edc\u4e3b\u673a\u7684\u5b9a\u4f4d\uff0c\u6570\u636e\u4f20\u8f93\u7684\u8def\u7531\uff0c\u7531IP\u5730\u5740\u53ef\u4ee5\u552f\u4e00\u7684\u786e\u5b9aInternet\u4e0a\u7684\u4e00\u53f0\u4e3b\u673a\u3002<\/p>\n\n\n\n
TCP\u5c42\u8d1f\u8d23\u9762\u5411\u5e94\u7528\u7684\u53ef\u9760\u7684\u6216\u975e\u53ef\u9760\u7684\u6570\u636e\u4f20\u8f93\u673a\u5236\uff0c\u8fd9\u662f\u7f51\u7edc\u7f16\u7a0b\u7684\u4e3b\u8981\u5bf9\u8c61\u3002<\/p>\n\n\n\n
TCP\/IP\u662f\u4e2a\u534f\u8bae\u7ec4\uff0c\u53ef\u5206\u4e3a\u4e09\u4e2a\u5c42\u6b21\uff1a\u7f51\u7edc\u5c42\u3001\u4f20\u8f93\u5c42\u548c\u5e94\u7528\u5c42\uff1a<\/p>\n\n\n\n
\u7f51\u7edc\u5c42\uff1aIP\u534f\u8bae\u3001ICMP\u534f\u8bae\u3001ARP\u534f\u8bae\u3001RARP\u534f\u8bae\u548cBOOTP\u534f\u8bae\uff1b<\/p>\n\n\n\n
\u4f20\u8f93\u5c42\uff1aTCP\u534f\u8bae\u4e0eUDP\u534f\u8bae\uff1b<\/p>\n\n\n\n
\u5e94\u7528\u5c42\uff1aFTP\u3001HTTP\u3001TELNET\u3001SMTP\u3001DNS\u7b49\u534f\u8bae\uff1b<\/p>\n\n\n\n HTTP\u662f\u5e94\u7528\u5c42\u534f\u8bae\uff0c\u5176\u4f20\u8f93\u90fd\u662f\u88ab\u5305\u88c5\u6210TCP\u534f\u8bae\u4f20\u8f93\u3002\u53ef\u4ee5\u7528SOCKET\u5b9e\u73b0HTTP\u3002SOCKET\u662f\u5b9e\u73b0\u4f20\u8f93\u5c42\u534f\u8bae\u7684\u4e00\u79cd\u7f16\u7a0bAPI\uff0c\u53ef\u4ee5\u662fTCP\uff0c\u4e5f\u53ef\u4ee5\u662fUDP\u3002<\/p>\n\n\n\n <\/p>\n\n\n\n 1.2 TCP<\/p><\/blockquote>\n\n\n\n TCP — \u4f20\u8f93\u63a7\u5236\u534f\u8bae,\u63d0\u4f9b\u7684\u662f\u9762\u5411\u8fde\u63a5\u3001\u53ef\u9760\u7684\u5b57\u8282\u6d41\u670d\u52a1\u3002\u5f53\u5ba2\u6237\u548c\u670d\u52a1\u5668\u5f7c\u6b64\u4ea4\u6362\u6570\u636e\u524d\uff0c\u5fc5\u987b\u5148\u5728\u53cc\u65b9\u4e4b\u95f4\u5efa\u7acb\u4e00\u4e2aTCP\u8fde\u63a5\uff0c\u4e4b\u540e\u624d\u80fd\u4f20\u8f93\u6570\u636e\u3002TCP\u63d0\u4f9b\u8d85\u65f6\u91cd\u53d1\uff0c\u4e22\u5f03\u91cd\u590d\u6570\u636e\uff0c\u68c0\u9a8c\u6570\u636e\uff0c\u6d41\u91cf\u63a7\u5236\u7b49\u529f\u80fd\uff0c\u4fdd\u8bc1\u6570\u636e\u80fd\u4ece\u4e00\u7aef\u4f20\u5230\u53e6\u4e00\u7aef\u3002 \u7406\u60f3\u72b6\u6001\u4e0b\uff0cTCP\u8fde\u63a5\u4e00\u65e6\u5efa\u7acb\uff0c\u5728\u901a\u4fe1\u53cc\u65b9\u4e2d\u7684\u4efb\u4f55\u4e00\u65b9\u4e3b\u52a8\u5173\u95ed\u8fde\u63a5\u524d\uff0cTCP \u8fde\u63a5\u90fd\u5c06\u88ab\u4e00\u76f4\u4fdd\u6301\u4e0b\u53bb\u3002\u65ad\u5f00\u8fde\u63a5\u65f6\u670d\u52a1\u5668\u548c\u5ba2\u6237\u7aef\u5747\u53ef\u4ee5\u4e3b\u52a8\u53d1\u8d77\u65ad\u5f00TCP\u8fde\u63a5\u7684\u8bf7\u6c42\u3002<\/p>\n\n\n\n TCP\u662f\u4e00\u79cd\u9762\u5411\u8fde\u63a5\u7684\u4fdd\u8bc1\u53ef\u9760\u4f20\u8f93\u7684\u534f\u8bae\u3002\u901a\u8fc7TCP\u534f\u8bae\u4f20\u8f93\uff0c\u5f97\u5230\u7684\u662f\u4e00\u4e2a\u987a\u5e8f\u7684\u65e0\u5dee\u9519\u7684\u6570\u636e\u6d41\u3002\u53d1\u9001\u65b9\u548c\u63a5\u6536\u65b9\u7684\u6210\u5bf9\u7684\u4e24\u4e2asocket\u4e4b\u95f4\u5fc5\u987b\u5efa\u7acb\u8fde\u63a5\uff0c\u4ee5\u4fbf\u5728TCP\u534f\u8bae\u7684\u57fa\u7840\u4e0a\u8fdb\u884c\u901a\u4fe1\uff0c\u5f53\u4e00\u4e2asocket\uff08\u901a\u5e38\u90fd\u662fserver socket\uff09\u7b49\u5f85\u5efa\u7acb\u8fde\u63a5\u65f6\uff0c\u53e6\u4e00\u4e2asocket\u53ef\u4ee5\u8981\u6c42\u8fdb\u884c\u8fde\u63a5\uff0c\u4e00\u65e6\u8fd9\u4e24\u4e2asocket\u8fde\u63a5\u8d77\u6765\uff0c\u5b83\u4eec\u5c31\u53ef\u4ee5\u8fdb\u884c\u53cc\u5411\u6570\u636e\u4f20\u8f93\uff0c\u53cc\u65b9\u90fd\u53ef\u4ee5\u8fdb\u884c\u53d1\u9001\u6216\u63a5\u6536\u64cd\u4f5c\u3002<\/p>\n\n\n\n TCP\u7279\u70b9\uff1a<\/p>\n\n\n\n TCP\u662f\u9762\u5411\u8fde\u63a5\u7684\u534f\u8bae\uff0c\u901a\u8fc7\u4e09\u6b21\u63e1\u624b\u5efa\u7acb\u8fde\u63a5\uff0c\u901a\u8baf\u5b8c\u6210\u65f6\u8981\u62c6\u9664\u8fde\u63a5\uff0c\u7531\u4e8eTCP\u662f\u9762\u5411\u8fde\u63a5\u534f\u8bae\uff0c\u6240\u4ee5\u53ea\u80fd\u7528\u4e8e\u70b9\u5bf9\u70b9\u7684\u901a\u8baf\u3002\u800c\u4e14\u5efa\u7acb\u8fde\u63a5\u4e5f\u9700\u8981\u6d88\u8017\u65f6\u95f4\u548c\u5f00\u9500\u3002<\/p>\n\n\n\n TCP\u4f20\u8f93\u6570\u636e\u65e0\u5927\u5c0f\u9650\u5236\uff0c\u8fdb\u884c\u5927\u6570\u636e\u4f20\u8f93\u3002<\/p>\n\n\n\n TCP\u662f\u4e00\u4e2a\u53ef\u9760\u7684\u534f\u8bae\uff0c\u5b83\u80fd\u4fdd\u8bc1\u63a5\u6536\u65b9\u80fd\u591f\u5b8c\u6574\u6b63\u786e\u5730\u63a5\u6536\u5230\u53d1\u9001\u65b9\u53d1\u9001\u7684\u5168\u90e8\u6570\u636e\u3002<\/p>\n\n\n\n \u8981\u4e86\u89e3TCP\uff0c\u4e00\u5b9a\u8981\u77e5\u9053”\u4e09\u6b21\u63e1\u624b\uff0c\u56db\u6b21\u62dc\u62dc”\u6240\u8c13\u7684\u4e09\u6b21\u63e1\u624b\uff0c\u5c31\u662f\u53d1\u9001\u6570\u636e\u524d\u5fc5\u987b\u5efa\u7acb\u7684\u8fde\u63a5\u53eb\u4e09\u6b21\u63e1\u624b\uff0c\u63e1\u624b\u5b8c\u4e86\u624d\u5f00\u59cb\u53d1\u7684\uff0c\u8fd9\u4e5f\u5c31\u662f\u9762\u5411\u8fde\u63a5\u7684\u610f\u601d\u3002<\/p>\n\n\n\n \u7b2c\u4e00\u6b21\u63e1\u624b\uff1a\u5ba2\u6237\u7aef\u53d1\u9001syn\u5305(syn=j)\u5230\u670d\u52a1\u5668\uff0c\u5e76\u8fdb\u5165SYN_SEND\u72b6\u6001\uff0c\u7b49\u5f85\u670d\u52a1\u5668\u786e\u8ba4\uff1b<\/p>\n\n\n\n \u7b2c\u4e8c\u6b21\u63e1\u624b\uff1a\u670d\u52a1\u5668\u6536\u5230syn\u5305\uff0c\u5fc5\u987b\u786e\u8ba4\u5ba2\u6237\u7684SYN\uff08ack=j+1\uff09\uff0c\u540c\u65f6\u81ea\u5df1\u4e5f\u53d1\u9001\u4e00\u4e2aSYN\u5305\uff08syn=k\uff09\uff0c\u5373SYN+ACK\u5305\uff0c\u6b64\u65f6\u670d\u52a1\u5668\u8fdb\u5165SYN_RECV\u72b6\u6001\uff1b<\/p>\n\n\n\n \u7b2c\u4e09\u6b21\u63e1\u624b\uff1a\u5ba2\u6237\u7aef\u6536\u5230\u670d\u52a1\u5668\u7684SYN\uff0bACK\u5305\uff0c\u5411\u670d\u52a1\u5668\u53d1\u9001\u786e\u8ba4\u5305ACK(ack=k+1)\uff0c\u6b64\u5305\u53d1\u9001\u5b8c\u6bd5\uff0c\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u8fdb\u5165ESTABLISHED\u72b6\u6001\uff0c\u5b8c\u6210\u4e09\u6b21\u63e1\u624b\uff1b<\/p>\n\n\n\n \u3010\u9002\u7528\u60c5\u51b5\u3011<\/p>\n\n\n\n TCP\u53d1\u9001\u7684\u5305\u6709\u5e8f\u53f7\uff0c\u5bf9\u65b9\u6536\u5230\u5305\u540e\u8981\u7ed9\u4e00\u4e2a\u53cd\u9988\uff0c\u5982\u679c\u8d85\u8fc7\u4e00\u5b9a\u65f6\u95f4\u8fd8\u6ca1\u6536\u5230\u53cd\u9988\u5c31\u81ea\u52a8\u6267\u884c\u8d85\u65f6\u91cd\u53d1\uff0c\u56e0\u6b64TCP\u6700\u5927\u7684\u4f18\u70b9\u662f\u53ef\u9760\u3002\u4e00\u822c\u7f51\u9875\uff08http\uff09\u3001\u90ae\u4ef6\uff08SMTP)\u3001\u8fdc\u7a0b\u8fde\u63a5(Telnet)\u3001\u6587\u4ef6(FTP)\u4f20\u9001\u5c31\u7528TCP\u3002<\/p>\n\n\n\n TCP\u5728\u7f51\u7edc\u901a\u4fe1\u4e0a\u6709\u6781\u5f3a\u7684\u751f\u547d\u529b\uff0c\u4f8b\u5982\u8fdc\u7a0b\u8fde\u63a5\uff08Telnet\uff09\u548c\u6587\u4ef6\u4f20\u8f93\uff08FTP\uff09\u90fd\u9700\u8981\u4e0d\u5b9a\u957f\u5ea6\u7684\u6570\u636e\u88ab\u53ef\u9760\u5730\u4f20\u8f93\u3002\u4f46\u662f\u53ef\u9760\u7684\u4f20\u8f93\u662f\u8981\u4ed8\u51fa\u4ee3\u4ef7\u7684\uff0c\u5bf9\u6570\u636e\u5185\u5bb9\u6b63\u786e\u6027\u7684\u68c0\u9a8c\u5fc5\u7136\u5360\u7528\u8ba1\u7b97\u673a\u7684\u5904\u7406\u65f6\u95f4\u548c\u7f51\u7edc\u7684\u5e26\u5bbd\uff0c\u56e0\u6b64TCP\u4f20\u8f93\u7684\u6548\u7387\u4e0d\u5982UDP\u9ad8\u3002<\/p>\n\n\n\n <\/p>\n\n\n\n 1.3 UDP<\/p><\/blockquote>\n\n\n\n UDP — \u7528\u6237\u6570\u636e\u62a5\u534f\u8bae\uff0c\u662f\u4e00\u4e2a\u65e0\u8fde\u63a5\u7684\u7b80\u5355\u7684\u9762\u5411\u6570\u636e\u62a5\u7684\u8fd0\u8f93\u5c42\u534f\u8bae\u3002UDP\u4e0d\u63d0\u4f9b\u53ef\u9760\u6027\uff0c\u5b83\u53ea\u662f\u628a\u5e94\u7528\u7a0b\u5e8f\u4f20\u7ed9IP\u5c42\u7684\u6570\u636e\u62a5\u53d1\u9001\u51fa\u53bb\uff0c\u4f46\u662f\u5e76\u4e0d\u80fd\u4fdd\u8bc1\u5b83\u4eec\u80fd\u5230\u8fbe\u76ee\u7684\u5730\u3002\u7531\u4e8eUDP\u5728\u4f20\u8f93\u6570\u636e\u62a5\u524d\u4e0d\u7528\u5728\u5ba2\u6237\u548c\u670d\u52a1\u5668\u4e4b\u95f4\u5efa\u7acb\u4e00\u4e2a\u8fde\u63a5\uff0c\u4e14\u6ca1\u6709\u8d85\u65f6\u91cd\u53d1\u7b49\u673a\u5236\uff0c\u6545\u800c\u4f20\u8f93\u901f\u5ea6\u5f88\u5feb\u3002<\/p>\n\n\n\n UDP\u662f\u4e00\u79cd\u9762\u5411\u65e0\u8fde\u63a5\u7684\u534f\u8bae\uff0c\u6bcf\u4e2a\u6570\u636e\u62a5\u90fd\u662f\u4e00\u4e2a\u72ec\u7acb\u7684\u4fe1\u606f\uff0c\u5305\u62ec\u5b8c\u6574\u7684\u6e90\u5730\u5740\u6216\u76ee\u7684\u5730\u5740\uff0c\u5b83\u5728\u7f51\u7edc\u4e0a\u4ee5\u4efb\u4f55\u53ef\u80fd\u7684\u8def\u5f84\u4f20\u5f80\u76ee\u7684\u5730\uff0c\u56e0\u6b64\u80fd\u5426\u5230\u8fbe\u76ee\u7684\u5730\uff0c\u5230\u8fbe\u76ee\u7684\u5730\u7684\u65f6\u95f4\u4ee5\u53ca\u5185\u5bb9\u7684\u6b63\u786e\u6027\u90fd\u662f\u4e0d\u80fd\u88ab\u4fdd\u8bc1\u7684\u3002<\/p>\n\n\n\n UDP\u7279\u70b9\uff1a<\/p>\n\n\n\n UDP\u662f\u9762\u5411\u65e0\u8fde\u63a5\u7684\u901a\u8baf\u534f\u8bae\uff0cUDP\u6570\u636e\u5305\u62ec\u76ee\u7684\u7aef\u53e3\u53f7\u548c\u6e90\u7aef\u53e3\u53f7\u4fe1\u606f\uff0c\u7531\u4e8e\u901a\u8baf\u4e0d\u9700\u8981\u8fde\u63a5\uff0c\u6240\u4ee5\u53ef\u4ee5\u5b9e\u73b0\u5e7f\u64ad\u53d1\u9001\u3002<\/p>\n\n\n\n UDP\u4f20\u8f93\u6570\u636e\u65f6\u6709\u5927\u5c0f\u9650\u5236\uff0c\u6bcf\u4e2a\u88ab\u4f20\u8f93\u7684\u6570\u636e\u62a5\u5fc5\u987b\u9650\u5b9a\u572864KB\u4e4b\u5185\u3002<\/p>\n\n\n\n UDP\u662f\u4e00\u4e2a\u4e0d\u53ef\u9760\u7684\u534f\u8bae\uff0c\u53d1\u9001\u65b9\u6240\u53d1\u9001\u7684\u6570\u636e\u62a5\u5e76\u4e0d\u4e00\u5b9a\u4ee5\u76f8\u540c\u7684\u6b21\u5e8f\u5230\u8fbe\u63a5\u6536\u65b9\u3002<\/p>\n\n\n\n \u3010\u9002\u7528\u60c5\u51b5\u3011<\/p>\n\n\n\n UDP\u662f\u9762\u5411\u6d88\u606f\u7684\u534f\u8bae\uff0c\u901a\u4fe1\u65f6\u4e0d\u9700\u8981\u5efa\u7acb\u8fde\u63a5\uff0c\u6570\u636e\u7684\u4f20\u8f93\u81ea\u7136\u662f\u4e0d\u53ef\u9760\u7684\uff0cUDP\u4e00\u822c\u7528\u4e8e\u591a\u70b9\u901a\u4fe1\u548c\u5b9e\u65f6\u7684\u6570\u636e\u4e1a\u52a1\uff0c\u6bd4\u5982\u8bed\u97f3\u5e7f\u64ad\u3001\u89c6\u9891\u3001QQ\u3001TFTP(\u7b80\u5355\u6587\u4ef6\u4f20\u9001\uff09\u3001SNMP\uff08\u7b80\u5355\u7f51\u7edc\u7ba1\u7406\u534f\u8bae\uff09\u3001RTP\uff08\u5b9e\u65f6\u4f20\u9001\u534f\u8bae\uff09RIP\uff08\u8def\u7531\u4fe1\u606f\u534f\u8bae\uff0c\u5982\u62a5\u544a\u80a1\u7968\u5e02\u573a\uff0c\u822a\u7a7a\u4fe1\u606f\uff09\u3001DNS(\u57df\u540d\u89e3\u91ca\uff09\u3002\u6ce8\u91cd\u901f\u5ea6\u6d41\u7545\u3002<\/p>\n\n\n\n UDP\u64cd\u4f5c\u7b80\u5355\uff0c\u800c\u4e14\u4ec5\u9700\u8981\u8f83\u5c11\u7684\u76d1\u62a4\uff0c\u56e0\u6b64\u901a\u5e38\u7528\u4e8e\u5c40\u57df\u7f51\u9ad8\u53ef\u9760\u6027\u7684\u5206\u6563\u7cfb\u7edf\u4e2dclient\/server\u5e94\u7528\u7a0b\u5e8f\u3002\u4f8b\u5982\u89c6\u9891\u4f1a\u8bae\u7cfb\u7edf\uff0c\u5e76\u4e0d\u8981\u6c42\u97f3\u9891\u89c6\u9891\u6570\u636e\u7edd\u5bf9\u7684\u6b63\u786e\uff0c\u53ea\u8981\u4fdd\u8bc1\u8fde\u8d2f\u6027\u5c31\u53ef\u4ee5\u4e86\uff0c\u8fd9\u79cd\u60c5\u51b5\u4e0b\u663e\u7136\u4f7f\u7528UDP\u4f1a\u66f4\u5408\u7406\u4e00\u4e9b\u3002<\/p>\n\n\n\n <\/p>\n\n\n\n 1.4 Socket<\/p><\/blockquote>\n\n\n\n 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\u521b\u5efaSocket\u8fde\u63a5\u65f6\uff0c\u53ef\u4ee5\u6307\u5b9a\u4f7f\u7528\u7684\u4f20\u8f93\u5c42\u534f\u8bae\uff0cSocket\u53ef\u4ee5\u652f\u6301\u4e0d\u540c\u7684\u4f20\u8f93\u5c42\u534f\u8bae\uff08TCP\u6216UDP\uff09\uff0c\u5f53\u4f7f\u7528TCP\u534f\u8bae\u8fdb\u884c\u8fde\u63a5\u65f6\uff0c\u8be5Socket\u8fde\u63a5\u5c31\u662f\u4e00\u4e2aTCP\u8fde\u63a5\u3002<\/p>\n\n\n\n \u3010\u9002\u7528\u60c5\u51b5\u3011<\/p>\n\n\n\n \u5f88\u591a\u60c5\u51b5\u4e0b\uff0c\u9700\u8981\u670d\u52a1\u5668\u7aef\u4e3b\u52a8\u5411\u5ba2\u6237\u7aef\u63a8\u9001\u6570\u636e\uff0c\u4fdd\u6301\u5ba2\u6237\u7aef\u4e0e\u670d\u52a1\u5668\u6570\u636e\u7684\u5b9e\u65f6\u4e0e\u540c\u6b65\u3002\u6b64\u65f6\u82e5\u53cc\u65b9\u5efa\u7acb\u7684\u662fSocket\u8fde\u63a5\uff0c\u670d\u52a1\u5668\u5c31\u53ef\u4ee5\u76f4\u63a5\u5c06\u6570\u636e\u4f20\u9001\u7ed9\u5ba2\u6237\u7aef\uff1b<\/p>\n\n\n\n <\/p>\n\n\n\n 1.5 HTTP<\/p><\/blockquote>\n\n\n\n HTTP\u534f\u8bae\u662f\u5efa\u7acb\u5728TCP\u534f\u8bae\u4e4b\u4e0a\u7684\u4e00\u79cd\u5e94\u7528\uff0cHTTP\u8fde\u63a5\u4f7f\u7528\u7684\u662f\u201c\u8bf7\u6c42\u2014\u54cd\u5e94\u201d\u7684\u65b9\u5f0f\uff0c\u4e0d\u4ec5\u5728\u8bf7\u6c42\u65f6\u9700\u8981\u5148\u5efa\u7acbTCP\u8fde\u63a5\uff0c\u800c\u4e14\u9700\u8981\u5ba2\u6237\u7aef\u5411\u670d\u52a1\u5668\u53d1\u51fa\u8bf7\u6c42\u540e\uff0c\u8bf7\u6c42\u4e2d\u5305\u542b\u8bf7\u6c42\u65b9\u6cd5\u3001URI\u3001\u534f\u8bae\u7248\u672c\u4ee5\u53ca\u76f8\u5173\u7684MIME\u6837\u5f0f\u7684\u6d88\u606f\uff0c\u670d\u52a1\u5668\u7aef\u624d\u80fd\u56de\u590d\u6570\u636e\uff0c\u5305\u542b\u6d88\u606f\u7684\u534f\u8bae\u7248\u672c\u3001\u4e00\u4e2a\u6210\u529f\u548c\u5931\u8d25\u7801\u4ee5\u53ca\u76f8\u5173\u7684MIME\u5f0f\u6837\u7684\u6d88\u606f\u3002\u5728\u8bf7\u6c42\u7ed3\u675f\u540e\uff0c\u4f1a\u4e3b\u52a8\u91ca\u653e\u8fde\u63a5\u3002<\/p>\n\n\n\n \u4ece\u5efa\u7acb\u8fde\u63a5\u5230\u5173\u95ed\u8fde\u63a5\u7684\u8fc7\u7a0b\u79f0\u4e3a\u201c\u4e00\u6b21\u8fde\u63a5\u201d\u3002\u7531\u4e8eHTTP\u5728\u6bcf\u6b21\u8bf7\u6c42\u7ed3\u675f\u540e\u90fd\u4f1a\u4e3b\u52a8\u91ca\u653e\u8fde\u63a5\uff0c\u56e0\u6b64HTTP\u8fde\u63a5\u662f\u4e00\u79cd\u201c\u77ed\u8fde\u63a5\u201d\uff0c\u8981\u4fdd\u6301\u5ba2\u6237\u7aef\u7a0b\u5e8f\u7684\u5728\u7ebf\u72b6\u6001\uff0c\u9700\u8981\u4e0d\u65ad\u5730\u5411\u670d\u52a1\u5668\u53d1\u8d77\u8fde\u63a5\u8bf7\u6c42\u3002\u901a\u5e38\u7684\u505a\u6cd5\u662f\u5373\u65f6\u4e0d\u9700\u8981\u83b7\u5f97\u4efb\u4f55\u6570\u636e\uff0c\u5ba2\u6237\u7aef\u4e5f\u4fdd\u6301\u6bcf\u9694\u4e00\u6bb5\u56fa\u5b9a\u7684\u65f6\u95f4\u5411\u670d\u52a1\u5668\u53d1\u9001\u4e00\u6b21\u201c\u4fdd\u6301\u8fde\u63a5\u201d\u7684\u8bf7\u6c42\uff0c\u670d\u52a1\u5668\u5728\u6536\u5230\u8be5\u8bf7\u6c42\u540e\u5bf9\u5ba2\u6237\u7aef\u8fdb\u884c\u56de\u590d\uff0c\u8868\u660e\u77e5\u9053\u5ba2\u6237\u7aef\u201c\u5728\u7ebf\u201d\u3002\u82e5\u670d\u52a1\u5668\u957f\u65f6\u95f4\u65e0\u6cd5\u6536\u5230\u5ba2\u6237\u7aef\u7684\u8bf7\u6c42\uff0c\u5219\u8ba4\u4e3a\u5ba2\u6237\u7aef\u201c\u4e0b\u7ebf\u201d\uff0c\u82e5\u5ba2\u6237\u7aef\u957f\u65f6\u95f4\u65e0\u6cd5\u6536\u5230\u670d\u52a1\u5668\u7684\u56de\u590d\uff0c\u5219\u8ba4\u4e3a\u7f51\u7edc\u5df2\u7ecf\u65ad\u5f00\u3002<\/p>\n\n\n\n <\/p>\n\n\n\n HTTP\/1.0\u4e3a\u6bcf\u4e00\u6b21HTTP\u7684\u8bf7\u6c42\/\u54cd\u5e94\u5efa\u7acb\u4e00\u6761\u65b0\u7684TCP\u94fe\u63a5\uff0c\u56e0\u6b64\u4e00\u4e2a\u5305\u542bHTML\u5185\u5bb9\u548c\u56fe\u7247\u7684\u9875\u9762\u5c06\u9700\u8981\u5efa\u7acb\u591a\u6b21\u7684\u77ed\u671f\u7684TCP\u94fe\u63a5\u3002\u4e00\u6b21TCP\u94fe\u63a5\u7684\u5efa\u7acb\u5c06\u9700\u89813\u6b21\u63e1\u624b\u3002<\/p>\n\n\n\n \u53e6\u5916\uff0c\u4e3a\u4e86\u83b7\u5f97\u9002\u5f53\u7684\u4f20\u8f93\u901f\u5ea6\uff0c\u5219\u9700\u8981TCP\u82b1\u8d39\u989d\u5916\u7684\u56de\u8def\u94fe\u63a5\u65f6\u95f4\uff08RTT\uff09\u3002\u6bcf\u4e00\u6b21\u94fe\u63a5\u7684\u5efa\u7acb\u9700\u8981\u8fd9\u79cd\u7ecf\u5e38\u6027\u7684\u5f00\u9500\uff0c\u800c\u5176\u5e76\u4e0d\u5e26\u6709\u5b9e\u9645\u6709\u7528\u7684\u6570\u636e\uff0c\u53ea\u662f\u4fdd\u8bc1\u94fe\u63a5\u7684\u53ef\u9760\u6027\uff0c\u56e0\u6b64HTTP\/1.1\u63d0\u51fa\u4e86\u53ef\u6301\u7eed\u94fe\u63a5\u7684\u5b9e\u73b0\u65b9\u6cd5\u3002HTTP\/1.1\u5c06\u53ea\u5efa\u7acb\u4e00\u6b21TCP\u7684\u94fe\u63a5\u800c\u91cd\u590d\u5730\u4f7f\u7528\u5b83\u4f20\u8f93\u4e00\u7cfb\u5217\u7684\u8bf7\u6c42\/\u54cd\u5e94\u6d88\u606f\uff0c\u56e0\u6b64\u51cf\u5c11\u4e86\u94fe\u63a5\u5efa\u7acb\u7684\u6b21\u6570\u548c\u7ecf\u5e38\u6027\u7684\u94fe\u63a5\u5f00\u9500\u3002<\/p>\n\n\n\n \u7ed3\u8bba\uff1aHTTP\u662f\u5e94\u7528\u5c42\u534f\u8bae\uff0c\u5176\u4f20\u8f93\u90fd\u662f\u88ab\u5305\u88c5\u6210TCP\u534f\u8bae\u4f20\u8f93\u3002\u53ef\u4ee5\u7528SOCKET\u5b9e\u73b0HTTP\u3002SOCKET\u662f\u5b9e\u73b0\u4f20\u8f93\u5c42\u534f\u8bae\u7684\u4e00\u79cd\u7f16\u7a0bAPI\uff0c\u53ef\u4ee5\u662fTCP\uff0c\u4e5f\u53ef\u4ee5\u662fUDP\u3002<\/p>\n\n\n\n \u3010\u9002\u7528\u60c5\u51b5\u3011<\/p>\n\n\n\n \u82e5\u53cc\u65b9\u5efa\u7acb\u7684\u662fHTTP\u8fde\u63a5\uff0c\u5219\u670d\u52a1\u5668\u9700\u8981\u7b49\u5230\u5ba2\u6237\u7aef\u53d1\u9001\u4e00\u6b21\u8bf7\u6c42\u540e\u624d\u80fd\u5c06\u6570\u636e\u4f20\u56de\u7ed9\u5ba2\u6237\u7aef\uff0c\u56e0\u6b64\uff0c\u5ba2\u6237\u7aef\u5b9a\u65f6\u5411\u670d\u52a1\u5668\u7aef\u53d1\u9001\u8fde\u63a5\u8bf7\u6c42\uff0c\u4e0d\u4ec5\u53ef\u4ee5\u4fdd\u6301\u5728\u7ebf\uff0c\u540c\u65f6\u4e5f\u662f\u5728\u201c\u8be2\u95ee\u201d\u670d\u52a1\u5668\u662f\u5426\u6709\u65b0\u7684\u6570\u636e\uff0c\u5982\u679c\u6709\u5c31\u5c06\u6570\u636e\u4f20\u7ed9\u5ba2\u6237\u7aef\u3002<\/p>\n\n\n\n <\/p>\n\n\n\n 1.6 FTP<\/p><\/blockquote>\n\n\n\n \u6587\u4ef6\u4f20\u8f93\u534f\u8bae\uff08File Transfer Protocol, FTP\uff09\u662fTCP\/IP\u7f51\u7edc\u4e0a\u4e24\u53f0\u8ba1\u7b97\u673a\u4f20\u9001\u6587\u4ef6\u7684\u534f\u8bae\uff0cFTP\u662f\u5728TCP\/IP\u7f51\u7edc\u548cINTERNET\u4e0a\u6700\u65e9\u4f7f\u7528\u7684\u534f\u8bae\u4e4b\u4e00\uff0c\u5b83\u5c5e\u4e8e\u7f51\u7edc\u534f\u8bae\u7ec4\u7684\u5e94\u7528\u5c42\u3002FTP\u5ba2\u6237\u673a\u53ef\u4ee5\u7ed9\u670d\u52a1\u5668\u53d1\u51fa\u547d\u4ee4\u6765\u4e0b\u8f7d\u6587\u4ef6\uff0c\u4e0a\u8f7d\u6587\u4ef6\uff0c\u521b\u5efa\u6216\u6539\u53d8\u670d\u52a1\u5668\u4e0a\u7684\u76ee\u5f55\u3002<\/p>\n\n\n\n <\/p>\n\n\n\n 2.1 \u4e8c\u5c42\u4ea4\u6362<\/p><\/blockquote>\n\n\n\n \u4ea4\u6362\u539f\u7406\uff1a\u6839\u636e\u7b2c\u4e8c\u5c42\u6570\u636e\u94fe\u8def\u5c42\u7684MAC\u5730\u5740\u6765\u5b9e\u73b0\u7aef\u5230\u7aef\u7684\u6570\u636e\u4ea4\u6362\uff1b<\/p>\n\n\n\n \u5de5\u4f5c\u6d41\u7a0b\uff1a<\/p>\n\n\n\n \uff081\uff09\u4ea4\u6362\u673a\u67d0\u7aef\u53e3\u6536\u5230\u6570\u636e\u5305\uff0c\u8bfb\u53d6\u6e90MAC\u5730\u5740\uff0c\u5f97\u5230\u6e90MAC\u5730\u5740\u673a\u5668\u6240\u8fde\u7aef\u53e3\uff1b<\/p>\n\n\n\n \uff082\uff09\u8bfb\u53d6\u76ee\u7684MAC\u5730\u5740\uff0c\u5728\u5730\u5740\u8868\u4e2d\u67e5\u627e\u5bf9\u5e94\u7aef\u53e3\uff1b<\/p>\n\n\n\n \uff083\uff09\u5982\u679c\u5730\u5740\u8868\u4e2d\u6709\u76ee\u7684MAC\u5730\u5740\u5bf9\u5e94\u7aef\u53e3\uff0c\u76f4\u63a5\u590d\u5236\u6570\u636e\u81f3\u6b64\u7aef\u53e3\uff1b<\/p>\n\n\n\n \uff084\uff09\u5982\u679c\u5730\u5740\u8868\u4e2d\u6ca1\u6709\u76ee\u7684MAC\u5730\u5740\u5bf9\u5e94\u7aef\u53e3\uff0c\u5e7f\u64ad\u6240\u6709\u7aef\u53e3\uff0c\u5f53\u76ee\u7684\u673a\u5668\u56de\u5e94\u65f6\uff0c\u66f4\u65b0\u5730\u5740\u8868\uff0c\u4e0b\u6b21\u5c31\u4e0d\u9700\u8981\u5e7f\u64ad\u4e86\uff1b<\/p>\n\n\n\n \u4e0d\u65ad\u7684\u5faa\u73af\u4e0a\u8ff0\u8fc7\u7a0b\uff0c\u5168\u7f51\u7684MAC\u5730\u5740\u4fe1\u606f\u90fd\u53ef\u4ee5\u5b66\u4e60\u5230\uff0c\u4e8c\u5c42\u4ea4\u6362\u673a\u5c31\u8fd9\u6837\u5b66\u4e60\u548c\u7ef4\u62a4\u5b83\u7684\u5730\u5740\u8868\u3002\u7b2c\u4e8c\u5c42\u4ea4\u6362\u673a\u6839\u636eMAC\u9009\u62e9\u7aef\u53e3\u8f6c\u53d1\u6570\u636e\uff0c\u7b97\u6cd5\u53c8\u5f88\u7b80\u5355\uff0c\u5176\u65b9\u4fbf\u91c7\u7528\u5ec9\u4ef7\u82af\u7247\u5b9e\u73b0\uff0c\u4e14\u901f\u5ea6\u5feb\u3002<\/p>\n\n\n\n <\/p>\n\n\n\n 2.2 \u4e09\u5c42\u4ea4\u6362<\/p><\/blockquote>\n\n\n\n \u4ea4\u6362\u539f\u7406\uff1a\u6839\u636e\u7b2c\u4e09\u5c42\u7f51\u7edc\u5c42\u7684IP\u5730\u5740\u6765\u5b8c\u6210\u7aef\u5230\u7aef\u7684\u6570\u636e\u4ea4\u6362\uff1b<\/p>\n\n\n\n \u573a\u666f\uff1aA(ip1) => \u4e09\u5c42\u4ea4\u6362\u673a =>B(ip2)<\/p>\n\n\n\n \u5de5\u4f5c\u6d41\u7a0b\uff1a<\/p>\n\n\n\n \uff081\uff09A\u53d1\u6570\u636e\u7ed9B\uff0c\u6839\u636eB\u7684ip\u5730\u5740+\u5b50\u7f51\u63a9\u7801\uff0cA\u80fd\u591f\u5224\u65ad\u51faB\u548c\u81ea\u5df1\u662f\u5426\u5728\u540c\u4e00\u4e2a\u7f51\u6bb5\uff1b<\/p>\n\n\n\n \uff082\uff09B\u5982\u679c\u548cA\u5728\u540c\u4e00\u4e2a\u7f51\u6bb5\u5185\uff0c\u4f46A\u4e0d\u77e5\u9053B\u7684MAC\u5730\u5740\uff0cA\u4f1a\u53d1\u9001\u4e00\u4e2aARP\u8bf7\u6c42\uff0c\u4ee5\u83b7\u53d6B\u7684MAC\u5730\u5740\uff0c\u5e76\u6839\u636eMAC\u901a\u8fc7\u4e8c\u5c42\u4ea4\u6362\u673a\u5c06\u6570\u636e\u53d1\u9001\u7ed9B\uff1b<\/p>\n\n\n\n \uff083\uff09B\u5982\u679c\u548cA\u4e0d\u5728\u540c\u4e00\u4e2a\u7f51\u6bb5\u5185\uff0c\u4e14\u4e0d\u77e5\u9053B\u7684MAC\u5730\u5740\uff0cA\u4f1a\u5c06\u6570\u636e\u5305\u53d1\u9001\u7ed9\u7f51\u5173\uff08A\u7684\u672c\u5730\u4e00\u5b9a\u6709\u7f51\u5173\u7684MAC\u5730\u5740\uff09\u3002\u7f51\u5173\u6536\u5230\u6570\u636e\u5305\u540e\uff0c\u5c06\u6e90MAC\u5730\u5740\u4f1a\u4fee\u6539\u4e3a\u7f51\u5173\u81ea\u5df1\u7684MAC\u5730\u5740\uff0c\u76ee\u7684IP\u5bf9\u5e94\u7684MAC\u5730\u5740\u4e3a\u76ee\u7684MAC\u5730\u5740\uff0c\u4ee5\u5b8c\u6210\u6570\u636e\u4ea4\u6362\u3002<\/p>\n\n\n\n \u770b\u4f3c\u7b2c\u4e09\u5c42\u4ea4\u6362\u673a\u662f\u7b2c\u4e8c\u5c42\u4ea4\u6362\u673a+\u8def\u7531\u529f\u80fd\u7684\u7ec4\u5408\uff0c\u5b9e\u9645\u5e76\u975e\u8fd9\u6837\uff1a\u6570\u636e\u901a\u8fc7\u7b2c\u4e09\u5c42\u8f6c\u53d1\u8bbe\u5907\u540e\uff0c\u4f1a\u8bb0\u5f55IP\u4e0eMAC\u7684\u6620\u5c04\u5173\u7cfb\uff0c\u4e0b\u6b21\u9700\u8981\u8f6c\u53d1\u65f6\uff0c\u4e0d\u4f1a\u518d\u7ecf\u8fc7\u7b2c\u4e09\u5c42\u8bbe\u5907\u3002<\/p>\n\n\n\n <\/p>\n\n\n\n 2.3 \u56db\u5c42\u4ea4\u6362<\/p><\/blockquote>\n\n\n\n \u4e8c\u5c42\u548c\u4e09\u5c42\u4ea4\u6362\u8bbe\u5907\u90fd\u662f\u57fa\u4e8e\u7aef\u5230\u7aef\u7684\u4ea4\u6362\uff0c\u8fd9\u79cd\u57fa\u4e8eIP\u548cMAC\u5730\u5740\u7684\u4ea4\u6362\u6280\u672f\uff0c\u6709\u7740\u5f88\u9ad8\u6548\u4f20\u8f93\u7387\uff0c\u4f46\u662f\u7f3a\u4e4f\u6839\u636e\u76ee\u7684\u4e3b\u673a\u5e94\u7528\u9700\u6c42\u52a8\u6001\u4ea4\u6362\u6570\u636e\u7684\u529f\u80fd\u3002<\/p>\n\n\n\n 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\u5ba2\u6237\u7aef\u4ee3\u7801\uff1a<\/p>\n\n\n\n \u670d\u52a1\u5668\u7aef\u4ee3\u7801\uff1a<\/p>\n\n\n\n <\/p>\n\n\n\n \u5ba2\u6237\u7aef\u5411\u670d\u52a1\u5668\u7aef\u4f20\u9001\u6587\u4ef6\uff0c\u670d\u52a1\u7aef\u53ef\u83b7\u53d6\u6587\u4ef6\u540d\u7528\u4e8e\u4fdd\u5b58\uff0c\u83b7\u53d6\u6587\u4ef6\u5927\u5c0f\u8ba1\u7b97\u4f20\u8f93\u8fdb\u5ea6\uff0c\u6bd4\u8f83\u7b80\u5355\uff0c\u76f4\u63a5\u8d34\u4ee3\u7801\u3002<\/p>\n\n\n\n \u5ba2\u6237\u7aef\u4ee3\u7801\uff1a<\/p>\n\n\n\n \u670d\u52a1\u5668\u7aef\u4ee3\u7801\uff1a<\/p>\n\n\n\n \u672c\u6587\u8f6c\u8f7d\u4e8e\uff1ahttps:\/\/blog.csdn.net\/andylauren\/article\/details\/ […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[4],"tags":[],"_links":{"self":[{"href":"http:\/\/blog.kijk.top\/index.php?rest_route=\/wp\/v2\/posts\/300"}],"collection":[{"href":"http:\/\/blog.kijk.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/blog.kijk.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/blog.kijk.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/blog.kijk.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=300"}],"version-history":[{"count":2,"href":"http:\/\/blog.kijk.top\/index.php?rest_route=\/wp\/v2\/posts\/300\/revisions"}],"predecessor-version":[{"id":303,"href":"http:\/\/blog.kijk.top\/index.php?rest_route=\/wp\/v2\/posts\/300\/revisions\/303"}],"wp:attachment":[{"href":"http:\/\/blog.kijk.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=300"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/blog.kijk.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=300"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/blog.kijk.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=300"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}![\"\"](\"http:\/\/blog.kijk.top\/wp-content\/uploads\/2022\/06\/20160923204315947-1024x897.png\")
<\/figure>\n\n\n\n2 N\u5c42\u4ea4\u6362\u6280\u672f<\/h2>\n\n\n\n
3 JDK Socket<\/h2>\n\n\n\n
Socket(InetAddress address,int port); \/\/\u521b\u5efa\u4e00\u4e2a\u6d41\u5957\u63a5\u5b57\u5e76\u5c06\u5176\u8fde\u63a5\u5230\u6307\u5b9a IP \u5730\u5740\u7684\u6307\u5b9a\u7aef\u53e3\u53f7\r\nSocket(String host,int port); \/\/\u521b\u5efa\u4e00\u4e2a\u6d41\u5957\u63a5\u5b57\u5e76\u5c06\u5176\u8fde\u63a5\u5230\u6307\u5b9a\u4e3b\u673a\u4e0a\u7684\u6307\u5b9a\u7aef\u53e3\u53f7\r\nSocket(InetAddress address,int port, InetAddress localAddr,int localPort); \/\/\u521b\u5efa\u4e00\u4e2a\u5957\u63a5\u5b57\u5e76\u5c06\u5176\u8fde\u63a5\u5230\u6307\u5b9a\u8fdc\u7a0b\u5730\u5740\u4e0a\u7684\u6307\u5b9a\u8fdc\u7a0b\u7aef\u53e3\r\nSocket(String host,int port, InetAddress localAddr,int localPort); \/\/\u521b\u5efa\u4e00\u4e2a\u5957\u63a5\u5b57\u5e76\u5c06\u5176\u8fde\u63a5\u5230\u6307\u5b9a\u8fdc\u7a0b\u4e3b\u673a\u4e0a\u7684\u6307\u5b9a\u8fdc\u7a0b\u7aef\u53e3\r\nSocket(SocketImpl impl); \/\/\u4f7f\u7528\u7528\u6237\u6307\u5b9a\u7684 SocketImpl \u521b\u5efa\u4e00\u4e2a\u672a\u8fde\u63a5 Socket\r\n \r\nServerSocket(int port); \/\/\u521b\u5efa\u7ed1\u5b9a\u5230\u7279\u5b9a\u7aef\u53e3\u7684\u670d\u52a1\u5668\u5957\u63a5\u5b57\r\nServerSocket(int port,int backlog); \/\/\u5229\u7528\u6307\u5b9a\u7684 backlog \u521b\u5efa\u670d\u52a1\u5668\u5957\u63a5\u5b57\u5e76\u5c06\u5176\u7ed1\u5b9a\u5230\u6307\u5b9a\u7684\u672c\u5730\u7aef\u53e3\u53f7\r\nServerSocket(int port,int backlog, InetAddress bindAddr); \/\/\u4f7f\u7528\u6307\u5b9a\u7684\u7aef\u53e3\u3001\u4fa6\u542c backlog \u548c\u8981\u7ed1\u5b9a\u5230\u7684\u672c\u5730 IP\u5730\u5740\u521b\u5efa\u670d\u52a1\u5668<\/code><\/pre>\n\n\n\npublic InputStream getInputStream(); \/\/\u65b9\u6cd5\u83b7\u5f97\u7f51\u7edc\u8fde\u63a5\u8f93\u5165\uff0c\u540c\u65f6\u8fd4\u56de\u4e00\u4e2aIutputStream\u5bf9\u8c61\u5b9e\u4f8b\r\npublic OutputStream getOutputStream(); \/\/\u65b9\u6cd5\u8fde\u63a5\u7684\u53e6\u4e00\u7aef\u5c06\u5f97\u5230\u8f93\u5165\uff0c\u540c\u65f6\u8fd4\u56de\u4e00\u4e2aOutputStream\u5bf9\u8c61\u5b9e\u4f8b\r\npublic Socket accept(); \/\/\u7528\u4e8e\u4ea7\u751f\"\u963b\u585e\"\uff0c\u76f4\u5230\u63a5\u53d7\u5230\u4e00\u4e2a\u8fde\u63a5\uff0c\u5e76\u4e14\u8fd4\u56de\u4e00\u4e2a\u5ba2\u6237\u7aef\u7684Socket\u5bf9\u8c61\u5b9e\u4f8b\u3002<\/code><\/pre>\n\n\n\n
<\/p>\n\n\n\n4 \u57fa\u672c\u7684Client\/Server\u7a0b\u5e8f<\/h2>\n\n\n\n
package sock;\r\n \r\nimport java.io.BufferedReader;\r\nimport java.io.InputStreamReader;\r\nimport java.io.PrintWriter;\r\nimport java.net.Socket;\r\n \r\npublic class SocketClient {\r\n public static void main(String[] args) {\r\n try {\r\n \/** \u521b\u5efaSocket*\/\r\n \/\/ \u521b\u5efa\u4e00\u4e2a\u6d41\u5957\u63a5\u5b57\u5e76\u5c06\u5176\u8fde\u63a5\u5230\u6307\u5b9a IP \u5730\u5740\u7684\u6307\u5b9a\u7aef\u53e3\u53f7(\u672c\u5904\u662f\u672c\u673a)\r\n Socket socket =new Socket(\"127.0.0.1\",2013);\r\n \/\/ 60s\u8d85\u65f6\r\n socket.setSoTimeout(60000);\r\n \r\n \/** \u53d1\u9001\u5ba2\u6237\u7aef\u51c6\u5907\u4f20\u8f93\u7684\u4fe1\u606f *\/\r\n \/\/ \u7531Socket\u5bf9\u8c61\u5f97\u5230\u8f93\u51fa\u6d41\uff0c\u5e76\u6784\u9020PrintWriter\u5bf9\u8c61\r\n PrintWriter printWriter =new PrintWriter(socket.getOutputStream(),true);\r\n \/\/ \u5c06\u8f93\u5165\u8bfb\u5165\u7684\u5b57\u7b26\u4e32\u8f93\u51fa\u5230Server\r\n BufferedReader sysBuff =new BufferedReader(new InputStreamReader(System.in));\r\n printWriter.println(sysBuff.readLine());\r\n \/\/ \u5237\u65b0\u8f93\u51fa\u6d41\uff0c\u4f7fServer\u9a6c\u4e0a\u6536\u5230\u8be5\u5b57\u7b26\u4e32\r\n printWriter.flush();\r\n \r\n \/** \u7528\u4e8e\u83b7\u53d6\u670d\u52a1\u7aef\u4f20\u8f93\u6765\u7684\u4fe1\u606f *\/\r\n \/\/ \u7531Socket\u5bf9\u8c61\u5f97\u5230\u8f93\u5165\u6d41\uff0c\u5e76\u6784\u9020\u76f8\u5e94\u7684BufferedReader\u5bf9\u8c61\r\n BufferedReader bufferedReader =new BufferedReader(new InputStreamReader(socket.getInputStream()));\r\n \/\/ \u8f93\u5165\u8bfb\u5165\u4e00\u5b57\u7b26\u4e32\r\n String result = bufferedReader.readLine();\r\n System.out.println(\"Server say : \" + result);\r\n \r\n \/** \u5173\u95edSocket*\/\r\n printWriter.close();\r\n bufferedReader.close();\r\n socket.close();\r\n }catch (Exception e) {\r\n System.out.println(\"Exception:\" + e);\r\n }\r\n }\r\n}<\/code><\/pre>\n\n\n\npackage sock;\r\nimport java.io.BufferedReader;\r\nimport java.io.InputStreamReader;\r\nimport java.io.PrintWriter;\r\nimport java.net.ServerSocket;\r\nimport java.net.Socket;\r\n \r\npublic class SocketServer {\r\n public static void main(String[] args) {\r\n try {\r\n \/** \u521b\u5efaServerSocket*\/\r\n \/\/ \u521b\u5efa\u4e00\u4e2aServerSocket\u5728\u7aef\u53e32013\u76d1\u542c\u5ba2\u6237\u8bf7\u6c42\r\n ServerSocket serverSocket =new ServerSocket(2013);\r\n while (true) {\r\n \/\/ \u4fa6\u542c\u5e76\u63a5\u53d7\u5230\u6b64Socket\u7684\u8fde\u63a5,\u8bf7\u6c42\u5230\u6765\u5219\u4ea7\u751f\u4e00\u4e2aSocket\u5bf9\u8c61\uff0c\u5e76\u7ee7\u7eed\u6267\u884c\r\n Socket socket = serverSocket.accept();\r\n \r\n \/** \u83b7\u53d6\u5ba2\u6237\u7aef\u4f20\u6765\u7684\u4fe1\u606f *\/\r\n \/\/ \u7531Socket\u5bf9\u8c61\u5f97\u5230\u8f93\u5165\u6d41\uff0c\u5e76\u6784\u9020\u76f8\u5e94\u7684BufferedReader\u5bf9\u8c61\r\n BufferedReader bufferedReader =new BufferedReader(new InputStreamReader(socket.getInputStream()));\r\n \/\/ \u83b7\u53d6\u4ece\u5ba2\u6237\u7aef\u8bfb\u5165\u7684\u5b57\u7b26\u4e32\r\n String result = bufferedReader.readLine();\r\n System.out.println(\"Client say : \" + result);\r\n \r\n \/** \u53d1\u9001\u670d\u52a1\u7aef\u51c6\u5907\u4f20\u8f93\u7684 *\/\r\n \/\/ \u7531Socket\u5bf9\u8c61\u5f97\u5230\u8f93\u51fa\u6d41\uff0c\u5e76\u6784\u9020PrintWriter\u5bf9\u8c61\r\n PrintWriter printWriter =new PrintWriter(socket.getOutputStream());\r\n printWriter.print(\"hello Client, I am Server!\");\r\n printWriter.flush();\r\n \r\n \/** \u5173\u95edSocket*\/\r\n printWriter.close();\r\n bufferedReader.close();\r\n socket.close();\r\n }\r\n }catch (Exception e) {\r\n System.out.println(\"Exception:\" + e);\r\n }finally{\r\n \/\/serverSocket.close();\r\n }\r\n }\r\n}<\/code><\/pre>\n\n\n\n5 \u591a\u5ba2\u6237\u7aef\u8fde\u63a5\u670d\u52a1\u5668<\/h2>\n\n\n\n
package sock;\r\n \r\nimport java.io.BufferedReader;\r\nimport java.io.InputStreamReader;\r\nimport java.io.PrintWriter;\r\nimport java.net.Socket;\r\n \r\npublic class SocketClient {\r\n public static void main(String[] args) {\r\n try {\r\n Socket socket =new Socket(\"127.0.0.1\",2013);\r\n socket.setSoTimeout(60000);\r\n \r\n PrintWriter printWriter =new PrintWriter(socket.getOutputStream(),true);\r\n BufferedReader bufferedReader =new BufferedReader(new InputStreamReader(socket.getInputStream()));\r\n \r\n String result =\"\";\r\n while(result.indexOf(\"bye\") == -1){\r\n BufferedReader sysBuff =new BufferedReader(new InputStreamReader(System.in));\r\n printWriter.println(sysBuff.readLine());\r\n printWriter.flush();\r\n \r\n result = bufferedReader.readLine();\r\n System.out.println(\"Server say : \" + result);\r\n }\r\n \r\n printWriter.close();\r\n bufferedReader.close();\r\n socket.close();\r\n }catch (Exception e) {\r\n System.out.println(\"Exception:\" + e);\r\n }\r\n }\r\n}<\/code><\/pre>\n\n\n\npackage sock;\r\nimport java.io.*;\r\nimport java.net.*;\r\n \r\npublic class Server extends ServerSocket {\r\n private static final int SERVER_PORT =2013;\r\n \r\n public Server()throws IOException {\r\n super(SERVER_PORT);\r\n \r\n try {\r\n while (true) {\r\n Socket socket = accept();\r\n new CreateServerThread(socket);\/\/\u5f53\u6709\u8bf7\u6c42\u65f6\uff0c\u542f\u4e00\u4e2a\u7ebf\u7a0b\u5904\u7406\r\n }\r\n }catch (IOException e) {\r\n }finally {\r\n close();\r\n }\r\n }\r\n \r\n \/\/\u7ebf\u7a0b\u7c7b\r\n class CreateServerThread extends Thread {\r\n private Socket client;\r\n private BufferedReader bufferedReader;\r\n private PrintWriter printWriter;\r\n \r\n public CreateServerThread(Socket s)throws IOException {\r\n client = s;\r\n \r\n bufferedReader =new BufferedReader(new InputStreamReader(client.getInputStream()));\r\n \r\n printWriter =new PrintWriter(client.getOutputStream(),true);\r\n System.out.println(\"Client(\" + getName() +\") come in...\");\r\n \r\n start();\r\n }\r\n \r\n public void run() {\r\n try {\r\n String line = bufferedReader.readLine();\r\n \r\n while (!line.equals(\"bye\")) {\r\n printWriter.println(\"continue, Client(\" + getName() +\")!\");\r\n line = bufferedReader.readLine();\r\n System.out.println(\"Client(\" + getName() +\") say: \" + line);\r\n }\r\n printWriter.println(\"bye, Client(\" + getName() +\")!\");\r\n \r\n System.out.println(\"Client(\" + getName() +\") exit!\");\r\n printWriter.close();\r\n bufferedReader.close();\r\n client.close();\r\n }catch (IOException e) {\r\n }\r\n }\r\n }\r\n \r\n public static void main(String[] args)throws IOException {\r\n new Server();\r\n }\r\n}<\/code><\/pre>\n\n\n\n6 \u4fe1\u606f\u7fa4\u53d1\u5171\u4eab<\/h2>\n\n\n\n
package sock;\r\n \r\nimport java.io.BufferedReader;\r\nimport java.io.InputStreamReader;\r\nimport java.io.PrintWriter;\r\nimport java.net.Socket;\r\n \r\npublic class SocketClient extends Socket{\r\n \r\n private static final String SERVER_IP =\"127.0.0.1\";\r\n private static final int SERVER_PORT =2013;\r\n \r\n private Socket client;\r\n private PrintWriter out;\r\n private BufferedReader in;\r\n \r\n \/**\r\n * \u4e0e\u670d\u52a1\u5668\u8fde\u63a5\uff0c\u5e76\u8f93\u5165\u53d1\u9001\u6d88\u606f\r\n *\/\r\n public SocketClient()throws Exception{\r\n super(SERVER_IP, SERVER_PORT);\r\n client =this;\r\n out =new PrintWriter(this.getOutputStream(),true);\r\n in =new BufferedReader(new InputStreamReader(this.getInputStream()));\r\n new readLineThread();\r\n \r\n while(true){\r\n in =new BufferedReader(new InputStreamReader(System.in));\r\n String input = in.readLine();\r\n out.println(input);\r\n }\r\n }\r\n \r\n \/**\r\n * \u7528\u4e8e\u76d1\u542c\u670d\u52a1\u5668\u7aef\u5411\u5ba2\u6237\u7aef\u53d1\u9001\u6d88\u606f\u7ebf\u7a0b\u7c7b\r\n *\/\r\n class readLineThread extends Thread{\r\n \r\n private BufferedReader buff;\r\n public readLineThread(){\r\n try {\r\n buff =new BufferedReader(new InputStreamReader(client.getInputStream()));\r\n start();\r\n }catch (Exception e) {\r\n }\r\n }\r\n \r\n @Override\r\n public void run() {\r\n try {\r\n while(true){\r\n String result = buff.readLine();\r\n if(\"byeClient\".equals(result)){\/\/\u5ba2\u6237\u7aef\u7533\u8bf7\u9000\u51fa\uff0c\u670d\u52a1\u7aef\u8fd4\u56de\u786e\u8ba4\u9000\u51fa\r\n break;\r\n }else{\/\/\u8f93\u51fa\u670d\u52a1\u7aef\u53d1\u9001\u6d88\u606f\r\n System.out.println(result);\r\n }\r\n }\r\n in.close();\r\n out.close();\r\n client.close();\r\n }catch (Exception e) {\r\n }\r\n }\r\n }\r\n \r\n public static void main(String[] args) {\r\n try {\r\n new SocketClient();\/\/\u542f\u52a8\u5ba2\u6237\u7aef\r\n }catch (Exception e) {\r\n }\r\n }\r\n}<\/code><\/pre>\n\n\n\npackage sock;\r\nimport java.io.BufferedReader;\r\nimport java.io.IOException;\r\nimport java.io.InputStreamReader;\r\nimport java.io.PrintWriter;\r\nimport java.net.ServerSocket;\r\nimport java.net.Socket;\r\nimport java.util.ArrayList;\r\nimport java.util.LinkedList;\r\nimport java.util.List;\r\n \r\n \r\npublic class Server extends ServerSocket{\r\n \r\n private static final int SERVER_PORT =2013;\r\n \r\n private static boolean isPrint =false;\/\/\u662f\u5426\u8f93\u51fa\u6d88\u606f\u6807\u5fd7\r\n private static List user_list =new ArrayList();\/\/\u767b\u5f55\u7528\u6237\u96c6\u5408\r\n private static List<ServerThread> thread_list =new ArrayList<ServerThread>();\/\/\u670d\u52a1\u5668\u5df2\u542f\u7528\u7ebf\u7a0b\u96c6\u5408\r\n private static LinkedList<String> message_list =new LinkedList<String>();\/\/\u5b58\u653e\u6d88\u606f\u961f\u5217\r\n \r\n \/**\r\n * \u521b\u5efa\u670d\u52a1\u7aefSocket,\u521b\u5efa\u5411\u5ba2\u6237\u7aef\u53d1\u9001\u6d88\u606f\u7ebf\u7a0b,\u76d1\u542c\u5ba2\u6237\u7aef\u8bf7\u6c42\u5e76\u5904\u7406\r\n *\/\r\n public Server()throws IOException{\r\n super(SERVER_PORT);\/\/\u521b\u5efaServerSocket\r\n new PrintOutThread();\/\/\u521b\u5efa\u5411\u5ba2\u6237\u7aef\u53d1\u9001\u6d88\u606f\u7ebf\u7a0b\r\n \r\n try {\r\n while(true){\/\/\u76d1\u542c\u5ba2\u6237\u7aef\u8bf7\u6c42\uff0c\u542f\u4e2a\u7ebf\u7a0b\u5904\u7406\r\n Socket socket = accept();\r\n new ServerThread(socket);\r\n }\r\n }catch (Exception e) {\r\n }finally{\r\n close();\r\n }\r\n }\r\n \r\n \/**\r\n * \u76d1\u542c\u662f\u5426\u6709\u8f93\u51fa\u6d88\u606f\u8bf7\u6c42\u7ebf\u7a0b\u7c7b,\u5411\u5ba2\u6237\u7aef\u53d1\u9001\u6d88\u606f\r\n *\/\r\n class PrintOutThread extends Thread{\r\n \r\n public PrintOutThread(){\r\n start();\r\n }\r\n \r\n @Override\r\n public void run() {\r\n while(true){\r\n if(isPrint){\/\/\u5c06\u7f13\u5b58\u5728\u961f\u5217\u4e2d\u7684\u6d88\u606f\u6309\u987a\u5e8f\u53d1\u9001\u5230\u5404\u5ba2\u6237\u7aef\uff0c\u5e76\u4ece\u961f\u5217\u4e2d\u6e05\u9664\u3002\r\n String message = message_list.getFirst();\r\n for (ServerThread thread : thread_list) {\r\n thread.sendMessage(message);\r\n }\r\n message_list.removeFirst();\r\n isPrint = message_list.size() >0 ?true :false;\r\n }\r\n }\r\n }\r\n }\r\n \r\n \/**\r\n * \u670d\u52a1\u5668\u7ebf\u7a0b\u7c7b\r\n *\/\r\n class ServerThread extends Thread{\r\n private Socket client;\r\n private PrintWriter out;\r\n private BufferedReader in;\r\n private String name;\r\n \r\n public ServerThread(Socket s)throws IOException{\r\n client = s;\r\n out =new PrintWriter(client.getOutputStream(),true);\r\n in =new BufferedReader(new InputStreamReader(client.getInputStream()));\r\n in.readLine();\r\n out.println(\"\u6210\u529f\u8fde\u4e0a\u804a\u5929\u5ba4,\u8bf7\u8f93\u5165\u4f60\u7684\u540d\u5b57\uff1a\");\r\n start();\r\n }\r\n \r\n @Override\r\n public void run() {\r\n try {\r\n int flag =0;\r\n String line = in.readLine();\r\n while(!\"bye\".equals(line)){\r\n \/\/\u67e5\u770b\u5728\u7ebf\u7528\u6237\u5217\u8868\r\n if (\"showuser\".equals(line)) {\r\n out.println(this.listOnlineUsers());\r\n line = in.readLine();\r\n }\r\n \/\/\u7b2c\u4e00\u6b21\u8fdb\u5165\uff0c\u4fdd\u5b58\u540d\u5b57\r\n if(flag++ ==0){\r\n name = line;\r\n user_list.add(name);\r\n thread_list.add(this);\r\n out.println(name +\"\u4f60\u597d,\u53ef\u4ee5\u5f00\u59cb\u804a\u5929\u4e86...\");\r\n this.pushMessage(\"Client<\" + name +\">\u8fdb\u5165\u804a\u5929\u5ba4...\");\r\n }else{\r\n this.pushMessage(\"Client<\" + name +\"> say : \" + line);\r\n }\r\n line = in.readLine();\r\n }\r\n out.println(\"byeClient\");\r\n }catch (Exception e) {\r\n e.printStackTrace();\r\n }finally{\/\/\u7528\u6237\u9000\u51fa\u804a\u5929\u5ba4\r\n try {\r\n client.close();\r\n }catch (IOException e) {\r\n e.printStackTrace();\r\n }\r\n thread_list.remove(this);\r\n user_list.remove(name);\r\n pushMessage(\"Client<\" + name +\">\u9000\u51fa\u4e86\u804a\u5929\u5ba4\");\r\n }\r\n }\r\n \r\n \/\/\u653e\u5165\u6d88\u606f\u961f\u5217\u672b\u5c3e\uff0c\u51c6\u5907\u53d1\u9001\u7ed9\u5ba2\u6237\u7aef\r\n private void pushMessage(String msg){\r\n message_list.addLast(msg);\r\n isPrint =true;\r\n }\r\n \r\n \/\/\u5411\u5ba2\u6237\u7aef\u53d1\u9001\u4e00\u6761\u6d88\u606f\r\n private void sendMessage(String msg){\r\n out.println(msg);\r\n }\r\n \r\n \/\/\u7edf\u8ba1\u5728\u7ebf\u7528\u6237\u5217\u8868\r\n private String listOnlineUsers() {\r\n String s =\"--- \u5728\u7ebf\u7528\u6237\u5217\u8868 ---\\015\\012\";\r\n for (int i =0; i < user_list.size(); i++) {\r\n s +=\"[\" + user_list.get(i) +\"]\\015\\012\";\r\n }\r\n s +=\"--------------------\";\r\n return s;\r\n }\r\n }\r\n \r\n public static void main(String[] args)throws IOException {\r\n new Server();\/\/\u542f\u52a8\u670d\u52a1\u7aef\r\n }\r\n}<\/code><\/pre>\n\n\n\n7 \u6587\u4ef6\u4f20\u8f93
<\/h2>\n\n\n\npackage sock;\r\n \r\nimport java.io.DataOutputStream;\r\nimport java.io.File;\r\nimport java.io.FileInputStream;\r\nimport java.net.Socket;\r\n \r\n\/**\r\n * \u5ba2\u6237\u7aef\r\n *\/\r\npublic class Client extends Socket{\r\n \r\n private static final String SERVER_IP =\"127.0.0.1\";\r\n private static final int SERVER_PORT =2013;\r\n \r\n private Socket client;\r\n private FileInputStream fis;\r\n private DataOutputStream dos;\r\n \r\n public Client(){\r\n try {\r\n try {\r\n client =new Socket(SERVER_IP, SERVER_PORT);\r\n \/\/\u5411\u670d\u52a1\u7aef\u4f20\u9001\u6587\u4ef6\r\n File file =new File(\"c:\/test.doc\");\r\n fis =new FileInputStream(file);\r\n dos =new DataOutputStream(client.getOutputStream());\r\n \r\n \/\/\u6587\u4ef6\u540d\u548c\u957f\u5ea6\r\n dos.writeUTF(file.getName());\r\n dos.flush();\r\n dos.writeLong(file.length());\r\n dos.flush();\r\n \r\n \/\/\u4f20\u8f93\u6587\u4ef6\r\n byte[] sendBytes =new byte[1024];\r\n int length =0;\r\n while((length = fis.read(sendBytes,0, sendBytes.length)) >0){\r\n dos.write(sendBytes,0, length);\r\n dos.flush();\r\n }\r\n }catch (Exception e) {\r\n e.printStackTrace();\r\n }finally{\r\n if(fis !=null)\r\n fis.close();\r\n if(dos !=null)\r\n dos.close();\r\n client.close();\r\n }\r\n }catch (Exception e) {\r\n e.printStackTrace();\r\n }\r\n }\r\n \r\n public static void main(String[] args)throws Exception {\r\n new Client();\r\n }\r\n}<\/code><\/pre>\n\n\n\npackage sock;\r\nimport java.io.DataInputStream;\r\nimport java.io.File;\r\nimport java.io.FileOutputStream;\r\nimport java.net.ServerSocket;\r\nimport java.net.Socket;\r\n \r\n\/**\r\n * \u670d\u52a1\u5668\r\n *\/\r\npublic class Server extends ServerSocket{\r\n \r\n private static final int PORT =2013;\r\n \r\n private ServerSocket server;\r\n private Socket client;\r\n private DataInputStream dis;\r\n private FileOutputStream fos;\r\n \r\n public Server()throws Exception{\r\n try {\r\n try {\r\n server =new ServerSocket(PORT);\r\n \r\n while(true){\r\n client = server.accept();\r\n \r\n dis =new DataInputStream(client.getInputStream());\r\n \/\/\u6587\u4ef6\u540d\u548c\u957f\u5ea6\r\n String fileName = dis.readUTF();\r\n long fileLength = dis.readLong();\r\n fos =new FileOutputStream(new File(\"d:\/\" + fileName));\r\n \r\n byte[] sendBytes =new byte[1024];\r\n int transLen =0;\r\n System.out.println(\"----\u5f00\u59cb\u63a5\u6536\u6587\u4ef6<\" + fileName +\">,\u6587\u4ef6\u5927\u5c0f\u4e3a<\" + fileLength +\">----\");\r\n while(true){\r\n int read =0;\r\n read = dis.read(sendBytes);\r\n if(read == -1)\r\n break;\r\n transLen += read;\r\n System.out.println(\"\u63a5\u6536\u6587\u4ef6\u8fdb\u5ea6\" +100 * transLen\/fileLength +\"%...\");\r\n fos.write(sendBytes,0, read);\r\n fos.flush();\r\n }\r\n System.out.println(\"----\u63a5\u6536\u6587\u4ef6<\" + fileName +\">\u6210\u529f-------\");\r\n client.close();\r\n }\r\n }catch (Exception e) {\r\n e.printStackTrace();\r\n }finally {\r\n if(dis !=null)\r\n dis.close();\r\n if(fos !=null)\r\n fos.close();\r\n server.close();\r\n }\r\n }catch (Exception e) {\r\n e.printStackTrace();\r\n }\r\n }\r\n \r\n public static void main(String[] args)throws Exception {\r\n new Server();\r\n }\r\n}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"