![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260828204056-6a91f2586dbae.png\")
<\/h2>\n\u6570\u636e\u4f20\u8f93\u5230\u4e3b\u673a\u4e0d\u662f\u662f\u76ee\u7684\u5417<\/span>？\u56e0\u4e3a\u6570\u636e\u662f\u7ed9\u4eba\u7528\u7684\u3002\u6bd4\u5982：\u804a\u5929\u662f\u4eba\u5728\u804a\u5929，\u6d4f\u89c8\u6211\u7f51\u9875\u662f\u4eba\u5728\u6d4f\u89c8？ \u4f46\u662f\u4eba\u662f\u600e\u4e48\u770b\u5230\u804a\u5929\u4fe1\u606f\u7684\u5462？\u600e\u4e48\u6267\u884c\u4e0b\u8f7d\u4efb\u52a1\u5462？\u600e\u4e48\u6d4f\u89c8\u7f51\u9875\u4fe1\u606f\u5462？\u901a\u8fc7\u542f\u52a8\u7684qq，\u8fc5\u96f7，\u6d4f\u89c8\u5668\u3002 \u800c\u542f\u52a8\u7684qq，\u8fc5\u96f7，\u6d4f\u89c8\u5668\u90fd\u662f\u8fdb\u7a0b\u3002\u6362\u53e5\u8bdd\u8bf4，\u8fdb\u7a0b\u662f\u4eba\u5728\u7cfb\u7edf\u4e2d\u7684\u4ee3\u8868，\u53ea\u8981\u628a\u6570\u636e\u7ed9\u8fdb\u7a0b，\u4eba\u5c31\u76f8\u5f53\u4e8e\u5c31\u62ff\u5230\u4e86\u6570\u636e\u3002 \u6240\u4ee5：\u6570\u636e\u4f20\u8f93\u5230\u4e3b\u673a\u4e0d\u662f\u76ee\u7684，\u800c\u662f\u624b\u6bb5\u3002\u5230\u8fbe\u4e3b\u673a\u5185\u90e8，\u518d\u4ea4\u7ed9\u4e3b\u673a\u5185\u7684\u8fdb\u7a0b，\u624d\u662f\u76ee\u7684（<\/span>\u8fdb\u7a0b\u5c31\u662f\u4eba\u5728\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u7684\u4ee3\u8868）<\/span><\/p>\n 1.\u6240\u4ee5<\/span>\u7f51\u7edc\u901a\u4fe1\u672c\u8d28 = \u8de8\u4e3b\u673a\u7684\u8fdb\u7a0b\u95f4\u901a\u4fe1<\/span>，\u7f51\u7edc\u5c31\u5145\u5f53\u8fdb\u7a0b\u95f4\u770b\u5230\u7684\u540c\u4e00\u4efd\u8d44\u6e90<\/span><\/p>\n<\/p>\n 2.\u4e0a\u7f51\u53ea\u6709\u4e24\u7c7b IO \u884c\u4e3a<\/p>\n \u4f46\u662f\u7cfb\u7edf\u4e2d，\u540c\u65f6\u4f1a\u5b58\u5728\u975e\u5e38\u591a\u7684\u8fdb\u7a0b，\u5f53\u6570\u636e\u5230\u8fbe\u76ee\u6807\u4e3b\u673a\u4e4b\u540e，\u600e\u4e48\u8f6c\u53d1\u7ed9\u76ee\u6807\u8fdb\u7a0b？<\/p>\n \u7aef\u53e3\u53f7( port )\u662f\u4f20\u8f93\u5c42<\/span>\u534f\u8bae\u7684\u5185\u5bb9<\/p>\n \u00a0\u2022 \u7aef\u53e3\u53f7\u662f\u2f00\u4e2a 2 \u5b57\u8282 16 \u4f4d\u7684\u6574\u6570;<\/p>\n \u00a0\u2022 \u7aef\u53e3\u53f7\u7528\u6765\u6807\u8bc6\u2f00\u4e2a\u8fdb\u7a0b<\/span>,\u544a\u8bc9\u64cd\u4f5c\u7cfb\u7edf,\u5f53\u524d\u7684\u8fd9\u4e2a\u6570\u636e\u8981\u4ea4\u7ed9\u54ea\u2f00\u4e2a\u8fdb\u7a0b<\/span>\u6765\u5904\u7406;<\/p>\n \u00a0\u2022\u00a0\u2f00\u4e2a\u7aef\u53e3\u53f7\u53ea\u80fd\u88ab\u2f00\u4e2a\u8fdb\u7a0b\u5360\u7528（\u2f00\u4e2a\u8fdb\u7a0b\u53ef\u4ee5\u7ed1\u5b9a\u591a\u4e2a\u7aef\u53e3\u53f7）<\/p>\n \u53c8IP \u5730\u5740：\u5b9a\u4f4d\u4e3b\u673a；\u7aef\u53e3\u53f7：\u5b9a\u4f4d\u4e3b\u673a\u5185\u90e8\u7684\u8fdb\u7a0b\u3002IP\u5730\u5740+\u7aef\u53e3\u53f7\u80fd\u591f\u6807\u8bc6\u7f51\u7edc\u4e0a\u7684\u67d0\u2f00\u53f0\u4e3b\u673a\u7684\u67d0\u2f00\u4e2a\u8fdb\u7a0b<\/span><\/p>\n \u00a0\u2022 0 – 1023 :\u77e5\u540d\u7aef\u53e3\u53f7,HTTP, FTP, SSH \u7b49\u8fd9\u4e9b\u5e7f\u4e3a\u4f7f\u7528\u7684\u5e94\u7528\u5c42\u534f\u8bae,\u4ed6\u4eec\u7684\u7aef\u53e3\u53f7\u90fd\u662f\u56fa\u5b9a\u7684.（\u5373\u6211\u4eec\u81ea\u5df1\u4e0d\u80fd\u4f7f\u7528\u8fd9\u4e9b\u7aef\u53e3\u53f7，\u5c31\u50cf110，120\u8fd9\u4e9b\u7535\u8bdd\u53f7\u7801\u4e00\u6837，\u6211\u4eec\u4e0d\u80fd\u4f7f\u7528）<\/p>\n \u00a0\u2022 1024 – 65535 :\u64cd\u4f5c\u7cfb\u7edf\u52a8\u6001\u5206\u914d\u7684\u7aef\u53e3\u53f7.\u5ba2\u6237\u7aef\u7a0b\u5e8f\u7684\u7aef\u53e3\u53f7,\u5c31\u662f\u7531\u64cd\u4f5c\u7cfb\u7edf\u4ece\u8fd9\u4e2a\u8303\u56f4\u5206\u914d\u7684（\u5ba2\u6237\u7aef\u4e0d\u7528bind\u5c31\u662f\u968f\u673a\u9760os\u5206\u914d）<\/span><\/p>\n \u6211\u4eec\u4e4b\u524d\u5728\u5b66\u4e60\u7cfb\u7edf\u7f16\u7a0b\u7684\u65f6\u5019,\u5b66\u4e60\u4e86pid\u53ef\u4ee5\u8868\u793a\u552f\u2f00 \u4e2a\u8fdb\u7a0b;\u6b64\u5904\u6211\u4eec\u7684\u7aef\u53e3\u53f7\u4e5f\u662f\u552f\u2f00\u8868\u793a\u2f00\u4e2a\u8fdb\u7a0b，\u90a3\u4e48\u8fd9\u4e24\u8005\u4e4b\u95f4\u662f\u600e\u6837\u7684\u5173\u7cfb?<\/p>\n \u7b80\u5355\u7406\u89e3PID\u5728\u64cd\u4f5c\u7cfb\u7edf\u5185\u90e8<\/span>\u6807\u8bc6\u8fdb\u7a0b；\u7aef\u53e3\u662f\u5728\u7f51\u7edc\u5c42<\/span>\u6807\u8bc6\u8fdb\u7a0b<\/p>\n \u4e3a\u4ec0\u4e48\u4e0d\u7edf\u4e00\u7528pid？<\/p>\n \u89e3\u8026<\/span><\/p>\n \u7406\u89e3： PID \u662f\u64cd\u4f5c\u7cfb\u7edf\u5185\u90e8\u7ed9\u7a0b\u5e8f\u7684 \u201c\u95e8\u724c\u53f7\u201d，\u53ea\u672c\u673a\u5185\u6838\u8ba4\u8bc6； \u7aef\u53e3\u53f7\u662f\u7f51\u7edc\u5c42\u9762\u7ea6\u5b9a\u7684 \u201c\u5bf9\u5916\u95e8\u724c\u53f7\u201d，\u5168\u4e16\u754c\u4e3b\u673a\u90fd\u80fd\u8bc6\u522b\u3002\u2018<\/p>\n<\/p>\n \u5728\u524d\u9762\u8bf4\u4e86IP \u5730\u5740：\u5b9a\u4f4d\u4e3b\u673a；\u7aef\u53e3\u53f7：\u5b9a\u4f4d\u4e3b\u673a\u5185\u90e8\u7684\u8fdb\u7a0b\u3002IP\u5730\u5740+\u7aef\u53e3\u53f7\u80fd\u591f\u6807\u8bc6\u7f51\u7edc\u4e0a\u7684\u67d0\u2f00\u53f0\u4e3b\u673a\u7684\u67d0\u2f00\u4e2a\u8fdb\u7a0b\u3002\u6240\u4ee5socket=IP+\u7aef\u53e3\u53f7<\/span><\/p>\n \u901a\u4fe1\u7684\u65f6\u5019，\u672c\u8d28\u662f\u4e24\u4e2a\u4e92\u8054\u7f51\u8fdb\u7a0b\u4ee3\u8868\u2f08\u6765\u8fdb\u884c\u901a\u4fe1，{srcIp，srcPort，dstIp，dstPort} \u8fd9\u6837\u76844\u5143\u7ec4\u5c31\u80fd\u6807\u8bc6\u4e92\u8054\u7f51\u4e2d\u552f\u2f06\u7684\u4e24\u4e2a\u8fdb\u7a0b<\/p>\n \u4f20\u8f93\u5c42\u7684\u5178\u578b\u4ee3\u8868<\/p>\n \u4f20\u8f93\u5c42\u662f\u5c5e\u4e8e\u5185\u6838\u7684，\u90a3\u4e48\u6211\u4eec\u8981\u901a\u8fc7\u7f51\u7edc\u534f\u8bae\u6808\u8fdb\u884c\u901a\u4fe1，\u5fc5\u5b9a\u8c03\u7528\u7684\u662f\u4f20\u8f93\u5c42\u63d0\u4f9b\u7684\u7cfb\u7edf\u8c03\u7528<\/span>，\u6765\u8fdb\u884c\u7684\u7f51\u7edc\u901a\u4fe1<\/p>\n \u8fd9\u4e9b\u7279\u6027\u540e\u9762\u518d\u505a\u7406\u89e3，\u73b0\u5728\u8ba4\u8bc6\u5373\u53ef<\/p>\n \u6211\u4eec\u5df2\u7ecf\u77e5\u9053,\u5185\u5b58\u4e2d\u7684\u591a\u5b57\u8282\u6570\u636e<\/span>\u76f8\u5bf9\u4e8e\u5185\u5b58\u5730\u5740\u6709\u5927\u7aef\u548c\u5c0f\u7aef\u4e4b\u5206,\u78c1\u76d8\u6587\u4ef6<\/span>\u4e2d\u7684\u591a\u5b57\u8282\u6570\u636e\u76f8\u5bf9\u4e8e\u6587\u4ef6\u4e2d\u7684\u504f\u79fb\u5730\u5740\u4e5f\u6709\u5927\u7aef\u5c0f\u7aef\u4e4b\u5206,\u7f51\u7edc\u6570\u636e\u6d41<\/span>\u540c\u6837\u6709\u5927\u7aef\u5c0f\u7aef\u4e4b\u5206.\u90a3\u4e48\u5982\u4f55\u5b9a\u4e49\u7f51\u7edc\u6570\u636e\u6d41\u7684\u5730\u5740\u5462?<\/p>\n \u2022 TCP\/IP\u534f\u8bae\u89c4\u5b9a,\u7f51\u7edc\u6570\u636e\u6d41\u5e94\u91c7\u7528\u5927\u7aef\u5b57\u8282\u5e8f,\u5373\u4f4e\u5730\u5740\u9ad8\u5b57\u8282.<\/span><\/p>\n \u2022 \u4e0d\u7ba1\u8fd9\u53f0\u4e3b\u673a\u662f\u5927\u7aef\u673a\u8fd8\u662f\u5c0f\u7aef\u673a,\u90fd\u4f1a\u6309\u7167\u8fd9\u4e2aTCP\/IP\u89c4\u5b9a\u7684\u7f51\u7edc\u5b57\u8282\u5e8f\u6765\u53d1\u9001\/\u63a5\u6536\u6570\u636e;\u6240\u4ee5 \u5982\u679c\u5f53\u524d\u53d1\u9001\u4e3b\u673a\u662f\u5c0f\u7aef,\u5c31\u9700\u8981\u5148\u5c06\u6570\u636e\u8f6c\u6210\u5927\u7aef;\u5426\u5219\u5c31\u5ffd\u7565,\u76f4\u63a5\u53d1\u9001\u5373\u53ef;<\/p>\n \u53ef\u4ee5\u8c03\u7528\u4ee5\u4e0b\u5e93\u51fd\u6570\u505a\u7f51\u7edc\u5b57\u8282\u5e8f\u548c\u4e3b\u673a\u5b57\u8282\u5e8f\u7684\u8f6c\u6362（\u5c31\u662f\u5bf9IP\u5730\u5740\u548c\u7aef\u53e3\u505a\u5927\u5c0f\u7aef\u5207\u6362）<\/span><\/p>\n uint16_t \u2192 \u7528\u6765\u5b58\u7aef\u53e3\u53f7（2 \u5b57\u8282） \u5c0f\u77e5\u8bc6<\/span>：uint32_t：\u65e0\u7b26\u53f7 32 \u4f4d\u6574\u6570\u7c7b\u578b（uint16_t\u540c\u7406），\u4f46uint32_t \u2260 unsigned int<\/span>，int \u957f\u5ea6\u5e73\u53f0\u53ef\u53d8，\u6240\u4ee5\u5c31\u4e0d\u4e00\u5b9a\u662f32\u4f4d\u4e86，\u53ea\u6709\u5728int\u4e3a32\u4f4d\u7684\u5e73\u53f0\u4e0b\u624d\u4f1asockaddr\u7ed3\u6784\u76f8\u7b49\u3002<\/p>\n uint32_t \u5f3a\u5236\u56fa\u5b9a 32 \u4f4d，\u8de8\u5e73\u53f0\u5927\u5c0f\u7edf\u4e00，\u7f51\u7edc\u901a\u4fe1\u4e0d\u4f1a\u51fa\u9519<\/p>\n \u8bb0\u5fc6\u6280\u5de7：h=host \u4e3b\u673a，n=net \u7f51\u7edc，s=short (16 \u4f4d)，l=long (32 \u4f4d)（eg：htonl\u5c31\u662fh（\u4e3b\u673a）–>n（\u7f51\u7edc）\u7684\u8f6c\u5316）<\/p>\n \u9996\u5148\u6211\u4eec\u5148\u4e86\u89e3\u4e00\u4e0b\u4e24\u5927 IPC \u4f53\u7cfb\u533a\u5206<\/p>\n Socket \u8bbe\u8ba1\u8005\u63d0\u4f9b\u7edf\u4e00\u63a5\u53e3，\u4f7f\u7528\u901a\u7528\u57fa\u7c7b struct sockaddr，\u517c\u5bb9\u4e24\u79cd\u901a\u4fe1\u573a\u666f：<\/p>\n \u5b9e\u9645\u5199\u4ee3\u7801\u65f6：\u6211\u4eec\u586b\u5145\u4e13\u7528\u7ed3\u6784\u4f53，\u5f3a\u5236\u8f6c\u6362\u6210 struct sockaddr* \u4f20\u5165\u51fd\u6570\u3002<\/span><\/p>\n struct sockaddr_un:<\/p>\n struct sockaddr_un{ struct sockaddr_in（\u7b80\u5316\u7248\u672c）：<\/p>\n struct sockaddr_in{ \u771f\u5b9e\u60c5\u51b5\u6709\u591a\u5c42\u5c01\u88c5<\/p>\n \u6240\u4ee5\u5982\u4f55\u533a\u5206\u901a\u4fe1\u7c7b\u578b？<\/p>\n \u4f9d\u9760\u5730\u5740\u65cf\u5b57\u6bb5\u5224\u65ad：<\/p>\n if(address->sa_family == AF_INET) int socket(int domain, int type, int protocol);<\/p>\n \u529f\u80fd：\u521b\u5efa\u901a\u4fe1\u7aef\u70b9，\u5728\u5185\u6838\u751f\u6210 socket \u5bf9\u8c61，\u8fd4\u56de\u6587\u4ef6\u63cf\u8ff0\u7b26 fd（\u7406\u89e3：\u6253\u5f00\u4e00\u4e2a\u7f51\u7edc\u6587\u4ef6）<\/p>\n \u53c2\u6570：<\/p>\n \u8fd4\u56de\u503c \u6210\u529f：\u8fd4\u56de socket \u6587\u4ef6\u63cf\u8ff0\u7b26（int）； \u5931\u8d25：\u8fd4\u56de -1，\u5168\u5c40\u53d8\u91cf errno \u4fdd\u5b58\u9519\u8bef\u7801\u3002<\/p>\n int bind(int sockfd, const struct sockaddr *addr, socklen_t addrlen);<\/p>\n \u529f\u80fd：\u7ed9 socket \u6587\u4ef6\u63cf\u8ff0\u7b26\u7ed1\u5b9a\u300c\u5730\u5740（IP + \u7aef\u53e3）\u300d，\u7ed9\u5957\u63a5\u5b57\u547d\u540d，\u8ba9\u522b\u4eba\u80fd\u627e\u5230\u4f60<\/span>\u3002（socket() \u4ec5\u4ec5\u521b\u5efa\u51fa\u4e00\u4e2a\u901a\u4fe1\u7aef\u70b9（\u62ff\u5230 fd），\u6b64\u65f6\u6ca1\u6709\u7aef\u53e3\u3001\u6ca1\u6709 IP，\u5916\u90e8\u65e0\u6cd5\u4e3b\u52a8\u8fde\u63a5 \/ \u53d1\u6570\u636e\u7ed9\u5b83\u3002）<\/p>\n \u53c2\u6570：<\/p>\n \u8fd4\u56de\u503c \u6210\u529f：\u8fd4\u56de 0； \u5931\u8d25：\u8fd4\u56de -1，\u8bbe\u7f6e errno<\/p>\n \u670d\u52a1\u5668（\u5fc5\u987b bind）：\u670d\u52a1\u5668\u9700\u8981\u56fa\u5b9a\u7aef\u53e3（\u4e0d\u4f1a\u968f\u673a\u53d8\u5316），\u8fd9\u6837\u5ba2\u6237\u7aef\u624d\u80fd\u548c\u670d\u52a1\u7aef\u8fde\u63a5<\/p>\n \u5ba2\u6237\u7aef（\u4e00\u822c\u4e0d\u7528\u624b\u52a8 bind）：\u5ba2\u6237\u7aef\u53d1\u8d77\u8fde\u63a5\u65f6，\u64cd\u4f5c\u7cfb\u7edf\u81ea\u52a8\u968f\u673a\u5206\u914d\u4e34\u65f6\u7aef\u53e3<\/p>\n \u4e3a\u4ec0\u4e48？\u624b\u52a8bind\u4f1a\u600e\u6837？<\/p>\n \u7aef\u53e3\u88ab\u5360\u7528\u95ee\u9898<\/p>\n \u5047\u5982\u7528\u4e86\u7aef\u53e36666bind\u90a3\u4e48\u5728\u7a0b\u5e8f\u5f02\u5e38\u9000\u51fa\u65f6，\u5176\u5b83\u7a0b\u5e8f\u90fd\u4e0d\u80fd\u75286666\u8fd9\u4e2a\u7aef\u53e3\u53f7，\u5373\u7aef\u53e3\u53f7\u88ab\u5360\u7528\u4e86<\/p>\n \u5355\u8fdb\u7a0b\u5c31\u53ea\u80fd\u5efa\u7acb\u4e00\u6761\u5bf9\u5916\u8fde\u63a5（\u4e25\u91cd\u9650\u5236）<\/p>\n [\u6e90 IP + \u6e90\u7aef\u53e3]—>[\u76ee\u6807IP+\u76ee\u6807\u7aef\u53e3]\u5efa\u7acb1\u6761\u8fde\u63a5，\u5982\u679c\u6e90\u7aef\u53e3\u56fa\u5b9a，\u5c31\u53ea\u80fd\u5efa\u7acb1\u6761\u8fde\u63a5\u4e86<\/p>\n ssize_t sendto(int sockfd, const void *buf, size_t len, int flags, \u53c2\u6570<\/p>\n \u8fd4\u56de\u503c<\/p>\n \u6210\u529f：\u53d1\u9001\u7684\u5b57\u8282\u6570；\u5931\u8d25：-1<\/p>\n ssize_t recvfrom(int sockfd, void *buf, size_t len, int flags, \u53c2\u6570<\/p>\n \u8fd4\u56de\u503c<\/p>\n 0：\u6536\u5230\u591a\u5c11\u5b57\u8282 -1：\u51fa\u9519<\/p>\n 1.udp sockfd，\u65e2\u53ef\u4ee5\u8bfb，\u53c8\u53ef\u4ee5\u5199\u3002UDP \u901a\u4fe1，\u5176\u5b9e\u662f\u5168\u53cc\u5de5\u7684<\/p>\n \u5168\u53cc\u5de5：\u901a\u4fe1\u53cc\u65b9\u53ef\u4ee5\u540c\u65f6\u6536\u53d1\u6570\u636e，\u4e0a\u884c\u3001\u4e0b\u884c\u76f8\u4e92\u72ec\u7acb，\u4e92\u4e0d\u963b\u585e<\/p>\n \u4e3a\u4ec0\u4e48\u662f\u5168\u53cc\u5de5？<\/p>\n \u5355\u4e2a UDP socket \u6587\u4ef6\u63cf\u8ff0\u7b26\u540c\u65f6\u5177\u5907\u8bfb\u7f13\u51b2\u533a\u3001\u5199\u7f13\u51b2\u533a \u5185\u6838\u7ed9\u6bcf\u4e2a UDP \u5957\u63a5\u5b57\u5206\u914d\u4e24\u5757\u72ec\u7acb\u7f13\u51b2\u533a：<\/p>\n int inet_aton(const char *strptr, struct in_addr *addrptr); \u77e5\u9053inet_addr\u3001inet_aton\u3001inet_ntoa\u6709\u9759\u6001\u8986\u76d6\u95ee\u9898，\u4e0d\u5b89\u5168，\u53ea\u80fd\u652f\u6301IPv4<\/p>\n \u63a8\u8350\u7528\u4e0b\u9762\u76842\u4e2a，\u652f\u6301 IPv4+IPv6，\u517c\u5bb9\u6027\u6700\u5f3a<\/p>\n \u5b57\u7b26\u4e32 IP \u2192 \u7f51\u7edc\u5b57\u8282\u5e8f<\/p>\n inet_pton<\/p>\n int inet_pton(int family, const char *strptr, void *addrptr);<\/p>\n eg：<\/p>\n \u7f51\u7edc\u5b57\u8282\u5e8f\u2192 \u5b57\u7b26\u4e32 IP<\/p>\n inet_ntop<\/p>\n eg： \u672c\u5730\u56de\u73af\u5730\u5740 127.0.0.1<\/p>\n \u00a0\u4e0d\u80fd bind \u516c\u7f51 IP \u4e91\u670d\u52a1\u5668\u7684\u516c\u7f51 IP \u53ea\u662f\u8fd0\u8425\u5546\u505a\u7684\u6620\u5c04，\u672c\u673a\u7f51\u5361\u5e76\u6ca1\u6709\u914d\u7f6e\u516c\u7f51 IP，\u76f4\u63a5 bind \u516c\u7f51 IP \u4f1a\u5931\u8d25\u3002<\/p>\n<\/li>\n \u00a0\u53ef\u4ee5 bind：127.0.0.1 \u6216\u8005\u672c\u673a\u5185\u7f51 IP（\u5982 10.0.0.6）<\/p>\n \u5982\u679c\u670d\u52a1\u7aef\u663e\u5f0f bind \u4e86\u67d0\u4e2a\u7279\u5b9a IP，\u5ba2\u6237\u7aef\u8bbf\u95ee\u65f6\u5fc5\u987b\u4f7f\u7528\u8fd9\u4e2a IP，\u5426\u5219\u8fde\u63a5\u5931\u8d25\u3002 \u4f8b：server bind 10.0.0.6，\u5ba2\u6237\u7aef\u7528127.0.0.1\u8fde\u63a5 \u2192 \u8bbf\u95ee\u4e0d\u901a！\u53cd\u8fc7\u6765\u540c\u6837\u4e0d\u884c<\/p>\n \u670d\u52a1\u7aef\u63a8\u8350\u7ed1\u5b9a INADDR_ANY（0.0.0.0）<\/span><\/p>\n local.sin_addr.s_addr = INADDR_ANY<\/p>\n \u542b\u4e49：\u76d1\u542c\u672c\u673a\u6240\u6709\u7f51\u5361\u4e0a\u7684\u6240\u6709 IP \u5730\u5740（\u4e0d\u662f\u8bf4\u548c\u80fd\u591f\u4e0e\u6240\u6709ip\u5730\u5740bind，\u53ea\u662f\u80fd\u591f\u76d1\u542c\u5230\u6240\u6709ip，\u53ef\u4ee5.\/udpclient \u516c\u7f51 8080\u5373\u76d1\u542c\u5230\u516c\u7f51）<\/p>\n \u4e0d\u9700\u8981\u624b\u52a8\u6307\u5b9a\u5355\u4e00 IP，\u89c4\u907f\u4e0a\u9762 \u201cIP \u4e0d\u5339\u914d\u8fde\u4e0d\u4e0a\u201d \u7684\u95ee\u9898\u3002<\/p>\n \u6307\u4ee4：netstat -anup<\/p>\n Echo server\u7b80\u5355\u7684\u56de\u663e\u670d\u52a1\u5668\u548c\u5ba2\u6237\u7aef\u4ee3\u7801<\/p>\n \u76f8\u5173\u5934\u6587\u4ef6：<\/p>\n #include <sys\/types.h> \/\/ \u57fa\u7840\u7c7b\u578b（\u65e9\u671f\u5fc5\u5907，\u73b0\u5728\u5f88\u591a\u7cfb\u7edf\u53ef\u7701\u7565） \u4ee3\u7801\u5b9e\u73b0：<\/p>\n Udpserver.hpp:<\/p>\n #pragma once<\/p>\n #include <iostream> #include <sys\/types.h> \/\/ INADDR_ANY; ; struct sockaddr_in local; \/\/ 2.bind void Start() } ~Udpserver() {}<\/p>\n private: Udpserver.cc<\/p>\n #include"UdpServer.hpp" return 0; UdpClient.hpp: #include <iostream> } private: UdpClient.cc:<\/p>\n #include"UdpClient.hpp" int main(int argc,char *argv[]) if(argc!=3) return 0; makefile:<\/p>\n .PHONY:all udpclient:UdpClient.cc .PHONY:clean Dict.hpp:<\/p>\n #pragma once<\/p>\n #include <iostream> const std::string defaultdict = ".\/dictionary.txt"; using namespace LogMoudle; private: InetAddr.hpp:<\/p>\n #pragma once private: uint16_t _port; UdpsServer.cc:<\/p>\n #include"UdpServer.hpp" int main(int argc,char *argv[]) return 0; UdpServer.hpp:<\/p>\n #pragma once<\/p>\n #include <iostream> #include <sys\/types.h> using namespace std; \/\/ 2.bind void Start() ssize_t s=sendto(_sockfd,result.c_str(),result.size(),0,(struct sockaddr*)&peer,len); } ~Udpserver() {}<\/p>\n private: UdpClient.cc:<\/p>\n #include"UdpClient.hpp" int main(int argc,char *argv[]) if(argc!=3) UdpClient.hpp:<\/p>\n #include <iostream> } private: InetAddr.hpp:<\/p>\n #pragma once private: uint16_t _port; Route.hpp:<\/p>\n #pragma once public: private: UdpServer.hpp:<\/p>\n #pragma once<\/p>\n #include <iostream> #include <sys\/types.h> using namespace std; class Udpserver \/\/ 2.bind void Start() }<\/p>\n } ~Udpserver() {}<\/p>\n private: UdpServer.cc:<\/p>\n #include "UdpServer.hpp" Enable_Console_Log_Strategy(); return 0; UdpClient.cc:<\/p>\n #include <iostream> #include"pthread.hpp" const std::string online = "inline"; while (true) } if (argc != 3) \/\/ 2. \u521b\u5efa\u7ebf\u7a0b，\u4e3a\u4ec0\u4e48\u8981\u521b\u5efa2\u4e2a\u7ebf\u7a0b，\u56e0\u4e3a\u53ea\u6709\u4e00\u4e2a\u7ebf\u7a0b\u7684\u8bdd\u5148\u53d1\u4fe1\u606f\u5982\u679c\u6ca1\u6709\u53d1\u7684\u8bdd\u5c31\u4f1a\u4e00\u76f4\u5361\u4f4f，\u4e0d\u4f1a\u6536\u5230\u4fe1\u606f<\/p>\n Thread recver(Recv); recver.Start(); id = recver.Id();<\/p>\n recver.Join(); return 0; Socket\u7f16\u7a0b\u9884\u5907\u6570\u636e\u4f20\u8f93\u5230\u4e3b\u673a\u4e0d\u662f\u662f\u76ee\u7684\u5417？\u56e0\u4e3a\u6570\u636e\u662f\u7ed9\u4eba\u7528\u7684\u3002\u6bd4\u5982：\u804a\u5929\u662f\u4eba\u5728\u804a\u5929，\u6d4f\u89c8\u6211\u7f51\u9875\u662f\u4eba\u5728\u6d4f\u89c8？ \u4f46\u662f\u4eba\u662f\u600e\u4e48\u770b\u5230\u804a\u5929\u4fe1\u606f\u7684\u5462？\u600e\u4e48\u6267\u884c\u4e0b\u8f7d\u4efb\u52a1\u5462？\u600e\u4e48\u6d4f\u89c8\u7f51\u9875\u4fe1\u606f\u5462？\u901a\u8fc7\u542f\u52a8\u7684qq，\u8fc5\u96f7，\u6d4f\u89c8\u5668\u3002 \u800c\u542f\u52a8\u7684qq，\u8fc5\u96f7，\u6d4f\u89c8\u5668\u90fd\u662f\u8fdb\u7a0b\u3002\u6362\u53e5\u8bdd\u8bf4，\u8fdb\u7a0b\u662f\u4eba\u5728\u7cfb\u7edf\u4e2d\u7684\u4ee3\u8868，\u53ea\u8981\u628a\u6570\u636e\u7ed9<\/p>\n","protected":false},"author":2,"featured_media":97146,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[58,190,43,78,44],"topic":[],"class_list":["post-97161","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-linux","tag-190","tag-43","tag-78","tag-44"],"yoast_head":"\n\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260828204057-6a91f259015b5.png\")
<\/p>\n\u8ba4\u8bc6\u7aef\u53e3\u53f7<\/h3>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260828204057-6a91f25942895.png\")
<\/p>\n\u7aef\u53e3\u53f7\u8303\u56f4\u5212\u5206<\/h4>\n
PID（\u8fdb\u7a0b ID） vs \u7aef\u53e3\u53f7<\/span><\/h5>\n
\n
\u8ba4\u8bc6socket<\/h3>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260828204057-6a91f2598cee6.png\")
<\/p>\n\n
\u7279\u6027TCPUDP<\/tr>\n \n\n \u8fde\u63a5\u5c5e\u6027<\/td>\n \u6709\u8fde\u63a5<\/td>\n \u65e0\u8fde\u63a5<\/td>\n<\/tr>\n \n \u53ef\u9760\u6027<\/td>\n \u53ef\u9760\u4f20\u8f93<\/td>\n \u4e0d\u53ef\u9760\u4f20\u8f93（\u4e0d\u662f\u8d2c\u4e49\u8bcd，\u76f8\u6bd4TCP\u505a\u7684\u66f4\u5c11，\u66f4\u7b80\u5355）<\/td>\n<\/tr>\n \n \u6570\u636e\u5f62\u5f0f<\/td>\n \u9762\u5411\u5b57\u8282\u6d41（\u50cf\u63a5\u6c34，\u591a\u5c11\u4e0d\u786e\u5b9a，\u4e0d\u5b8c\u6574）<\/td>\n \u9762\u5411\u6570\u636e\u62a5（\u4e00\u4e2a\u4e00\u4e2a\u7684\u662f\u5b8c\u6574\u7684）<\/td>\n<\/tr>\n \n \u5f00\u9500<\/td>\n \u5934\u90e8\u5927，\u673a\u5236\u590d\u6742<\/td>\n \u5934\u90e8\u6781\u7b80，\u5f00\u9500\u5c0f<\/span><\/td>\n<\/tr>\n \n \u9002\u7528\u573a\u666f<\/td>\n \u6587\u4ef6\u4f20\u8f93\u3001HTTP\/HTTPS\u3001SSH\u3001\u6570\u636e\u5e93\u901a\u4fe1（\u8981\u6c42\u6570\u636e\u51c6\u786e）<\/td>\n \u76f4\u64ad\u3001\u8bed\u97f3\u901a\u8bdd\u3001\u6e38\u620f\u3001DNS（\u5141\u8bb8\u5c11\u91cf\u4e22\u5305，\u8ffd\u6c42\u4f4e\u5ef6\u8fdf）<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u7f51\u7edc\u5b57\u8282\u5e8f<\/h3>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260828204057-6a91f259d6bd8.png\")
<\/p>\n
\nuint32_t \u2192 \u7528\u6765\u5b58\u653e IP\u6574\u578b\u5730\u5740<\/span>（4 \u5b57\u8282）<\/span><\/p>\n![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260828204057-6a91f259efdf1.png\")
<\/p>\n\u7406\u89e3Socket \u5730\u5740\u7ed3\u6784<\/h3>\n
\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260828204058-6a91f25a18049.png\")
<\/p>\n
\n sa_family_t sun_family; \/\/ \u5730\u5740\u65cf：AF_UNIX
\n char sun_path[108]; \/\/ \u672c\u5730\u6587\u4ef6\u8def\u5f84\u540d
\n};<\/p>\n
\n sa_family_t sin_family; \/\/ \u5730\u5740\u65cf：AF_INET
\n uint16_t sin_port; \/\/ 16\u4f4d\u7aef\u53e3\u53f7
\n struct in_addr sin_addr; \/\/ 32\u4f4dIPv4\u5730\u5740
\n unsigned char sin_zero[8];\/\/ 8\u5b57\u8282\u586b\u5145，\u5bf9\u9f50\u5927\u5c0f，\u517c\u5bb9sockaddr
\n};<\/p>\n![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260828204058-6a91f25a86752.png\")
socket\u5e38\u89c1API：<\/p>\n![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260828204059-6a91f25b22a80.png\")
<\/p>\n
\n{
\n \/\/ \u7f51\u7edc\u901a\u4fe1，\u5f3a\u8f6c sockaddr_in
\n}
\nelse if(address->sa_family == AF_UNIX)
\n{
\n \/\/ Unix\u672c\u5730\u901a\u4fe1，\u5f3a\u8f6c sockaddr_un
\n}<\/p>\n<\/h2>\n
socket () \u51fd\u6570<\/h4>\n
\n
bind () \u51fd\u6570<\/h4>\n
\n
\u5206\u573a\u666f\u7406\u89e3\u8981\u4e0d\u8981bind：<\/h4>\n
sendto \u53d1\u9001\u6570\u636e<\/h4>\n
\n const struct sockaddr *dest_addr, socklen_t addrlen);<\/p>\nrecvfrom \u63a5\u6536\u6570\u636e<\/h4>\n
\n struct sockaddr *src_addr, socklen_t *addrlen);<\/p>\n\n
\nrom()\u8bfb\u53d6<\/li>\nIP \u5730\u5740\u8f6c\u6362\u51fd\u6570<\/h4>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260828204059-6a91f25b56e8d.png\")
<\/p>\n![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260828204059-6a91f25b6858a.png\")
<\/p>\n![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260828204059-6a91f25b7df7c.png\")
<\/p>\n\n
bind \u7684\u4e09\u79cd\u60c5\u51b5\u603b\u7ed3<\/h4>\n
\n
\n
V1\u7248\u672c<\/h2>\n
\n#include <sys\/socket.h> \/\/ socket\u3001bind\u3001listen\u3001accept\u3001connect \u51fd\u6570 + \u5b8f
\n#include <arpa\/inet.h> \/\/ sockaddr_in\u3001inet_addr\u3001inet_ntoa\u3001inet_pton
\n#include <netinet\/in.h> \/\/ \u5b9a\u4e49 AF_INET\u3001SOCK_STREAM
\n#include <unistd.h> \/\/ close() \u5173\u95ed\u6587\u4ef6\u63cf\u8ff0\u7b26
\n#include <errno.h> \/\/ errno \u9519\u8bef\u7801
\n#include <string.h> \/\/ memset \u6e05\u7a7a\u7ed3\u6784\u4f53<\/p>\n![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260828204059-6a91f25b8f094.png\")
<\/p>\n
\n#include <string>
\n#include <functional>
\n#include <strings.h> \/\/bzero<\/p>\n
\n#include <sys\/socket.h>
\n#include <netinet\/in.h>
\n#include <arpa\/inet.h>
\n#include "Log.hpp"
\nusing namespace std;
\nusing namespace LogMoudle;
\nconst int defaultid = -1;
\nusing func_t = function<string &(string &)>;<\/p>\n
\nclass Udpserver
\n{
\npublic:
\n Udpserver(uint16_t port, func_t fun)
\n : _port(port), _fun(fun), _sockfd(defaultid), _isrunning(false)
\n {
\n }
\n void Init()
\n {
\n \/\/ 1.\u521b\u5efasocket
\n _sockfd = socket(AF_INET, SOCK_DGRAM, 0);
\n if (_sockfd == -1)
\n {
\n LOG(LogLevel::FATAL) << "socket fail";
\n exit(2);
\n }
\n LOG(LogLevel::INFO) << "socket sucess,socket: " << _sockfd;<\/p>\n
\n struct sockaddr_in local;
\n bzero(&local, sizeof(local));
\n local.sin_port = htons(_port);
\n local.sin_family = AF_INET;
\n local.sin_addr.s_addr = INADDR_ANY;
\n int n = bind(_sockfd, (struct sockaddr *)&local, sizeof(local));
\n if (n < 0)
\n {
\n LOG(LogLevel::FATAL) << "bind error";
\n exit(2);
\n }
\n LOG(LogLevel::INFO) << "bind success, sockfd : " << _sockfd;
\n }<\/p>\n
\n {
\n _isrunning=true;
\n \/\/\u6211\u4eec\u5e73\u65f6\u7528\u7684\u7a0b\u5e8fapp\u90fd\u662f\u4e0d\u4f1a\u9000\u51fa\u7684，\u5373\u90fd\u662f\u6b7b\u5faa\u73af
\n while(_isrunning)
\n {
\n char buffer[1024];
\n struct sockaddr_in peer;
\n bzero(&peer, sizeof(peer));
\n socklen_t len=sizeof(peer);
\n \/\/\u6536\u4fe1\u606f
\n ssize_t r=recvfrom(_sockfd,buffer,sizeof(buffer)-1,0,(struct sockaddr*)&peer,&len);
\n if(r>0)
\n {
\n buffer[r]=0;
\n uint16_t peer_port=ntohs(peer.sin_port);
\n string peer_ip=inet_ntoa(peer.sin_addr);
\n LOG(LogLevel::DEBUG) << "[" << peer_ip << ":" << peer_port<< "]# " << buffer; \/\/ 1. \u6d88\u606f\u5185\u5bb9 2. \u8c01\u53d1\u7684？？
\n \/\/\u53d1\u4fe1\u606f
\n string echo_string = "server echo@ ";
\n echo_string += buffer;
\n ssize_t s=sendto(_sockfd,echo_string.c_str(),echo_string.size(),0,(struct sockaddr*)&peer,len);
\n }<\/p>\n
\n }<\/p>\n
\n uint16_t _port;
\n bool _isrunning;
\n int _sockfd;
\n func_t _fun;
\n};<\/p>\n
\n\/\/.udpserver 8080
\nstring&handler(string&s)
\n{
\n s="hello"+s;
\n return s;
\n}
\nint main(int argc,char *argv[])
\n{
\n Enable_Console_Log_Strategy();
\n if(argc!=2)
\n {
\n std::cerr << "Usage: " << argv[0] << " port" << std::endl;
\n return 1;
\n }
\n unique_ptr<Udpserver>uds=make_unique<Udpserver>(8080,handler);\/\/\u8fd9\u91cc\u4f20\u4e86handler\u4f46\u662f\u6ca1\u6709\u4f7f\u7528，\u53ea\u505a\u4e86server\u56de\u663e\u7684\u64cd\u4f5c
\n uds->Init();
\n uds->Start();<\/p>\n
\n}<\/p>\n
\n\u00a0<\/p>\n
\n#include <string>
\n#include <functional>
\n#include <strings.h> \/\/bzero
\n#include<string.h>
\n#include <sys\/types.h>
\n#include <sys\/socket.h>
\n#include <netinet\/in.h>
\n#include <arpa\/inet.h>
\n#include "Log.hpp"
\nusing namespace LogMoudle;
\nclass Udpclient
\n{
\npublic:
\n Udpclient(string &ip, int port)
\n : _sockfd(-1), _server_ip(ip), _server_port(port)
\n {
\n }
\n ~Udpclient() {}
\n void Init()
\n {
\n \/\/ socket
\n _sockfd = socket(AF_INET, SOCK_DGRAM, 0);
\n if (_sockfd == -1)
\n {
\n LOG(LogLevel::FATAL) << "socket fail";
\n exit(2);
\n }
\n LOG(LogLevel::INFO) << "socket sucess,socket: " << _sockfd;
\n \/\/ bind,\u5ba2\u6237\u7aef\u4e0d\u7528\u624b\u52a8bind，os\u81ea\u52a8\u5206\u914d\u7aef\u53e3\u53f7
\n }
\n void Start()
\n {
\n struct sockaddr_in server;
\n memset(&server,0,sizeof(server));
\n server.sin_family = AF_INET;
\n server.sin_addr.s_addr = inet_addr(_server_ip.c_str());
\n server.sin_port = htons(_server_port);
\n while (true)
\n {
\n string buffer;
\n cout << "Please Enter#" << endl;
\n getline(cin, buffer);
\n \/\/ \u53d1\u9001
\n ssize_t s = sendto(_sockfd, buffer.c_str(), buffer.size(), 0, (struct sockaddr *)&server, sizeof(server));
\n (void)s;
\n \/\/\u6536\u4fe1\u606f
\n char buffer2[1024];
\n struct sockaddr_in peer;
\n socklen_t len=sizeof(peer);
\n ssize_t r=recvfrom(_sockfd,buffer2,sizeof(buffer2)-1,0,(struct sockaddr*)&peer,&len);
\n if(r>0)
\n {
\n buffer2[r]=0;
\n cout<<buffer2<<endl;
\n }<\/p>\n
\n }<\/p>\n
\n string _server_ip;
\n int _server_port;
\n int _sockfd;
\n};<\/p>\n
\n\/\/.\/udpclient ip port<\/p>\n
\n{
\n Enable_Console_Log_Strategy();<\/p>\n
\n {
\n cerr<<"Usage:.\/udpclient ip port"<<endl;
\n return 1;
\n }
\n string server_ip=argv[1];
\n int server_port=stoi(argv[2]);
\n unique_ptr<Udpclient>udc=make_unique<Udpclient>(server_ip,server_port);
\n udc->Init();
\n udc->Start();<\/p>\n
\n}<\/p>\n
\nall:udpclient udpserver<\/p>\n
\ng++ -o $@ $^ -std=c++17 #-static
\nudpserver:UdpServer.cc
\ng++ -o $@ $^ -std=c++17<\/p>\n
\nclean:
\nrm -f udpclient udpserver<\/p>\nV2:\u7ffb\u8bd1\u7248<\/h2>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260828204059-6a91f25ba5b0e.png\")
<\/p>\n
\n#include <fstream>
\n#include <string>
\n#include <unordered_map>
\n#include "Log.hpp"
\n#include "InetAddr.hpp"<\/p>\n
\nconst std::string sep = ": ";<\/p>\n
\nclass Diet
\n{
\npublic:
\n Diet(const string &path = defaultdict)
\n : _dict_path(path)
\n {
\n }
\n bool LoadDict()
\n {
\n ifstream in(_dict_path);
\n if (!in.is_open())
\n {
\n LOG(LogLevel::DEBUG) << "\u6253\u5f00\u5b57\u5178: " << _dict_path << " \u9519\u8bef";
\n return false;
\n }
\n string line;
\n while (getline(in, line))
\n {
\n auto pos = line.find(sep);
\n if (pos == string::npos)
\n {
\n LOG(LogLevel::WARNING) << "\u89e3\u6790" << line << "\u5931\u8d25";
\n continue;
\n }
\n string enlish = line.substr(0, pos);
\n string chinese = line.substr(pos + 2);
\n if (enlish.empty() || chinese.empty())
\n {
\n LOG(LogLevel::WARNING) << "\u6ca1\u6709\u6709\u6548\u5185\u5bb9" << line;
\n continue;
\n }
\n _dict.insert({enlish, chinese});
\n LOG(LogLevel::DEBUG) << "\u52a0\u8f7d:" << line;
\n }
\n in.close();
\n return true;
\n }
\n string Translate(const string &word, InetAddr &client)
\n {
\n auto iter = _dict.find(word);
\n if (iter == _dict.end())
\n {
\n LOG(LogLevel::DEBUG) << "\u8fdb\u5165\u5230\u4e86\u7ffb\u8bd1\u6a21\u5757, [" << client.Ip()<< " : " << client.Port() << "]# " << word << "->None";
\n return "None";
\n }
\n LOG(LogLevel::DEBUG) << "\u8fdb\u5165\u5230\u4e86\u7ffb\u8bd1\u6a21\u5757, [" << client.Ip()<< " : " << client.Port() << "]# " << word << "->" << iter->second;
\n return iter->second;
\n }
\n ~Diet() {}<\/p>\n
\n string _dict_path;
\n unordered_map<string, string> _dict;
\n};<\/p>\n
\n#include <iostream>
\n#include <string>
\n#include <sys\/socket.h>
\n#include <sys\/types.h>
\n#include <arpa\/inet.h>
\n#include <netinet\/in.h>
\nusing namespace std;
\nclass InetAddr
\n{
\npublic:
\n InetAddr(struct sockaddr_in &addr)
\n : _addr(addr)
\n {
\n _port = ntohs(_addr.sin_port);
\n _ip = inet_ntoa(_addr.sin_addr);
\n }
\n string Ip()
\n {
\n return _ip;
\n }
\n uint16_t Port()
\n {
\n return _port;
\n }
\n string StringAddr()
\n {
\n return _ip+":"+to_string(_port);
\n }
\n ~InetAddr() {}<\/p>\n
\n sockaddr_in _addr;<\/p>\n
\n string _ip;
\n};<\/p>\n
\n#include"Dict.hpp"
\n\/\/.udpserver 8080<\/p>\n
\n{
\n Enable_Console_Log_Strategy();
\n if(argc!=2)
\n {
\n std::cerr << "Usage: " << argv[0] << " port" << std::endl;
\n return 1;
\n }
\n \/\/
\n Diet d;
\n d.LoadDict();
\n auto handler=[&d](const string&word,InetAddr&cli){return d.Translate(word,cli);};
\n \/\/2\u4e2a\u6a21\u5757\u8fde\u63a5\u7684\u5173\u952e！！！
\n unique_ptr<Udpserver>uds=make_unique<Udpserver>(8080,handler);
\n uds->Init();
\n uds->Start();<\/p>\n
\n}<\/p>\n
\n#include <string>
\n#include <functional>
\n#include <strings.h> \/\/bzero<\/p>\n
\n#include <sys\/socket.h>
\n#include <netinet\/in.h>
\n#include <arpa\/inet.h>
\n#include "Log.hpp"
\n#include"InetAddr.hpp"<\/p>\n
\nusing namespace LogMoudle;
\nconst int defaultid = -1;
\nusing func_t = function<std::string(const std::string&, InetAddr&)>;
\n\/\/ INADDR_ANY; ; struct sockaddr_in local;
\nclass Udpserver
\n{
\npublic:
\n Udpserver(uint16_t port, func_t fun)
\n : _port(port), _fun(fun), _sockfd(defaultid), _isrunning(false)
\n {
\n }
\n void Init()
\n {
\n \/\/ 1.\u521b\u5efasocket
\n _sockfd = socket(AF_INET, SOCK_DGRAM, 0);
\n if (_sockfd == -1)
\n {
\n LOG(LogLevel::FATAL) << "socket fail";
\n exit(2);
\n }
\n LOG(LogLevel::INFO) << "socket sucess,socket: " << _sockfd;<\/p>\n
\n struct sockaddr_in local;
\n bzero(&local, sizeof(local));
\n local.sin_port = htons(_port);
\n local.sin_family = AF_INET;
\n local.sin_addr.s_addr = INADDR_ANY;
\n int n = bind(_sockfd, (struct sockaddr *)&local, sizeof(local));
\n if (n < 0)
\n {
\n LOG(LogLevel::FATAL) << "bind error";
\n exit(2);
\n }
\n LOG(LogLevel::INFO) << "bind success, sockfd : " << _sockfd;
\n }<\/p>\n
\n {
\n _isrunning=true;
\n \/\/\u6211\u4eec\u5e73\u65f6\u7528\u7684\u7a0b\u5e8fapp\u90fd\u662f\u4e0d\u4f1a\u9000\u51fa\u7684，\u5373\u90fd\u662f\u6b7b\u5faa\u73af
\n while(_isrunning)
\n {
\n char buffer[1024];
\n struct sockaddr_in peer;
\n bzero(&peer, sizeof(peer));
\n socklen_t len=sizeof(peer);
\n \/\/\u6536\u4fe1\u606f
\n ssize_t r=recvfrom(_sockfd,buffer,sizeof(buffer)-1,0,(struct sockaddr*)&peer,&len);
\n if(r>0)
\n {
\n InetAddr client(peer);
\n buffer[r]=0;
\n string result=_fun(buffer,client);<\/p>\n
\n }<\/p>\n
\n }<\/p>\n
\n uint16_t _port;
\n bool _isrunning;
\n int _sockfd;
\n func_t _fun;
\n};<\/p>\n
\n\/\/.\/udpclient ip port<\/p>\n
\n{
\n Enable_Console_Log_Strategy();<\/p>\n
\n {
\n cerr<<"Usage:.\/udpclient ip port"<<endl;
\n return 1;
\n }
\n string server_ip=argv[1];
\n int server_port=stoi(argv[2]);
\n unique_ptr<Udpclient>udc=make_unique<Udpclient>(server_ip,server_port);
\n udc->Init();
\n udc->Start();<\/p>\n
\n#include <string>
\n#include <functional>
\n#include <strings.h> \/\/bzero
\n#include<string.h>
\n#include <sys\/types.h>
\n#include <sys\/socket.h>
\n#include <netinet\/in.h>
\n#include <arpa\/inet.h>
\n#include "Log.hpp"
\nusing namespace LogMoudle;
\nclass Udpclient
\n{
\npublic:
\n Udpclient(string &ip, int port)
\n : _sockfd(-1), _server_ip(ip), _server_port(port)
\n {
\n }
\n ~Udpclient() {}
\n void Init()
\n {
\n \/\/ socket
\n _sockfd = socket(AF_INET, SOCK_DGRAM, 0);
\n if (_sockfd == -1)
\n {
\n LOG(LogLevel::FATAL) << "socket fail";
\n exit(2);
\n }
\n LOG(LogLevel::INFO) << "socket sucess,socket: " << _sockfd;
\n \/\/ bind,\u5ba2\u6237\u7aef\u4e0d\u7528\u624b\u52a8bind，os\u81ea\u52a8\u5206\u914d\u7aef\u53e3\u53f7
\n }
\n void Start()
\n {
\n struct sockaddr_in server;
\n memset(&server,0,sizeof(server));
\n server.sin_family = AF_INET;
\n server.sin_addr.s_addr = inet_addr(_server_ip.c_str());
\n server.sin_port = htons(_server_port);
\n while (true)
\n {
\n string buffer;
\n cout << "Please Enter#" << endl;
\n getline(cin, buffer);
\n \/\/ \u53d1\u9001
\n ssize_t s = sendto(_sockfd, buffer.c_str(), buffer.size(), 0, (struct sockaddr *)&server, sizeof(server));
\n (void)s;
\n \/\/\u6536\u4fe1\u606f
\n char buffer2[1024];
\n struct sockaddr_in peer;
\n socklen_t len=sizeof(peer);
\n ssize_t r=recvfrom(_sockfd,buffer2,sizeof(buffer2)-1,0,(struct sockaddr*)&peer,&len);
\n if(r>0)
\n {
\n buffer2[r]=0;
\n cout<<buffer2<<endl;
\n }<\/p>\n
\n }<\/p>\n
\n string _server_ip;
\n int _server_port;
\n int _sockfd;
\n};<\/p>\nV3：\u7fa4\u804a\u7248<\/h2>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260828204059-6a91f25bbdfaf.png\")
<\/p>\n
\n#include <iostream>
\n#include <string>
\n#include <sys\/socket.h>
\n#include <sys\/types.h>
\n#include <arpa\/inet.h>
\n#include <netinet\/in.h>
\nusing namespace std;
\nclass InetAddr
\n{
\npublic:
\n InetAddr(struct sockaddr_in &addr)
\n : _addr(addr)
\n {
\n _port = ntohs(_addr.sin_port);
\n _ip = inet_ntoa(_addr.sin_addr);
\n }
\n string Ip()
\n {
\n return _ip;
\n }
\n uint16_t Port()
\n {
\n return _port;
\n }
\n string StringAddr()
\n {
\n return "["+_ip+":"+to_string(_port)+"]";
\n }
\n bool operator==(const InetAddr&addr)
\n {
\n return addr._ip == _ip && addr._port == _port;
\n }
\n struct sockaddr_in NetAddr()
\n {
\n return _addr;
\n }
\n ~InetAddr() {}<\/p>\n
\n sockaddr_in _addr;<\/p>\n
\n string _ip;
\n};<\/p>\n
\n#include <iostream>
\n#include <string>
\n#include <vector>
\n#include "InetAddr.hpp"
\n#include "Log.hpp"
\nusing namespace LogMoudle;
\nclass Route
\n{
\nprivate:
\n bool IsExist(InetAddr &peer)
\n {
\n for (auto &user : _online_user)
\n {
\n if (user == peer)
\n {
\n return true;
\n }
\n }
\n return false;
\n }
\n void AddUser(InetAddr &peer)
\n {
\n LOG(LogLevel::INFO) << "\u65b0\u589e\u4e00\u4e2a\u5728\u7ebf\u7528\u6237" << peer.StringAddr();
\n _online_user.push_back(peer);
\n }
\n void DeleteUser(InetAddr &peer)
\n {
\n for (auto iter = _online_user.begin(); iter != _online_user.end(); iter++)
\n {
\n if (*iter == peer)
\n {
\n LOG(LogLevel::INFO) << "\u5220\u9664\u4e00\u4e2a\u5728\u7ebf\u7528\u6237" << peer.StringAddr() << "\u6210\u529f";
\n _online_user.erase(iter);
\n break;
\n }
\n }
\n }<\/p>\n
\n Route() {}
\n void MessageRoute(int sockfd, string &message, InetAddr &peer)
\n {
\n LockGuard guard(_mutex);
\n if (!IsExist(peer))
\n {
\n AddUser(peer);
\n }
\n string send_message = peer.StringAddr() + "#" + message;
\n for (auto &user : _online_user)
\n {
\n \/\/ sendto(sockfd, send_message.c_str(), send_message.size(), 0, (struct sockaddr *)&(user.NetAddr()), sizeof(user.NetAddr()));
\n \/\/ user.NetAddr() \u662f\u6210\u5458\u51fd\u6570\u8c03\u7528，\u8fd4\u56de\u503c\u662f\u4e34\u65f6\u5bf9\u8c61（\u53f3\u503c rvalue）\u3002
\n \/\/ \u4e0d\u80fd\u5bf9\u4e34\u65f6\u5bf9\u8c61\u76f4\u63a5\u53d6\u5730\u5740 &
\n struct sockaddr_in peer_addr = user.NetAddr();
\n sendto(sockfd, send_message.c_str(), send_message.size(), 0,
\n (struct sockaddr *)&peer_addr, sizeof(peer_addr));
\n }
\n if (message == "QUIT")
\n {
\n LOG(LogLevel::INFO) << "\u5220\u9664\u4e00\u4e2a\u5728\u7ebf\u7528\u6237: " << peer.StringAddr();
\n DeleteUser(peer);
\n }
\n }
\n ~Route() {}<\/p>\n
\n vector<InetAddr> _online_user;
\n Mutex _mutex;\/\/\u8bf4\u5230\u5e95_online_user\u8fd8\u662f\u4e00\u4e2a\u5168\u5c40\u5171\u4eab\u7684，\u6709\u4e9b\u7ebf\u7a0b\u5728\u5220\u9664\u6709\u4e9b\u5728\u6dfb\u52a0\u9700\u8981\u9501\u4fdd\u62a4
\n};<\/p>\n
\n#include <string>
\n#include <functional>
\n#include <strings.h> \/\/bzero<\/p>\n
\n#include <sys\/socket.h>
\n#include <netinet\/in.h>
\n#include <arpa\/inet.h>
\n#include "Log.hpp"
\n#include"InetAddr.hpp"<\/p>\n
\nusing namespace LogMoudle;
\nconst int defaultid = -1;
\nusing func_t2 = std::function<void(int sockfd, const std::string&, InetAddr&)>;<\/p>\n
\n{
\npublic:
\n Udpserver(uint16_t port, func_t2 fun)
\n : _port(port), _fun(fun), _sockfd(defaultid), _isrunning(false)
\n {
\n }
\n void Init()
\n {
\n \/\/ 1.\u521b\u5efasocket
\n _sockfd = socket(AF_INET, SOCK_DGRAM, 0);
\n if (_sockfd == -1)
\n {
\n LOG(LogLevel::FATAL) << "socket fail";
\n exit(2);
\n }
\n LOG(LogLevel::INFO) << "socket sucess,socket: " << _sockfd;<\/p>\n
\n struct sockaddr_in local;
\n bzero(&local, sizeof(local));
\n local.sin_port = htons(_port);
\n local.sin_family = AF_INET;
\n local.sin_addr.s_addr = INADDR_ANY;
\n int n = bind(_sockfd, (struct sockaddr *)&local, sizeof(local));
\n if (n < 0)
\n {
\n LOG(LogLevel::FATAL) << "bind error";
\n exit(2);
\n }
\n LOG(LogLevel::INFO) << "bind success, sockfd : " << _sockfd;
\n }<\/p>\n
\n {
\n _isrunning=true;
\n \/\/\u6211\u4eec\u5e73\u65f6\u7528\u7684\u7a0b\u5e8fapp\u90fd\u662f\u4e0d\u4f1a\u9000\u51fa\u7684，\u5373\u90fd\u662f\u6b7b\u5faa\u73af
\n while(_isrunning)
\n {
\n char buffer[1024];
\n struct sockaddr_in peer;
\n bzero(&peer, sizeof(peer));
\n socklen_t len=sizeof(peer);
\n \/\/\u6536\u4fe1\u606f
\n ssize_t r=recvfrom(_sockfd,buffer,sizeof(buffer)-1,0,(struct sockaddr*)&peer,&len);
\n if(r>0)
\n {
\n InetAddr client(peer);
\n buffer[r]=0;
\n _fun(_sockfd,buffer,client);\/\/buffer\u662fconst char*<\/p>\n
\n }<\/p>\n
\n uint16_t _port;
\n bool _isrunning;
\n int _sockfd;
\n func_t2 _fun;
\n};<\/p>\n
\n#include "Route.hpp"
\n#include "ThreadPool.hpp"
\n#include<memory>
\n\/\/.udpserver 8080
\nusing namespace ThreadPoolModule;
\nusing task_t = function<void()>;
\nint main(int argc, char *argv[])
\n{
\n Enable_Console_Log_Strategy();
\n if (argc != 2)
\n {
\n std::cerr << "Usage: " << argv[0] << " port" << std::endl;
\n return 1;
\n }
\n \/\/
\n uint16_t port = stoi(argv[1]);<\/p>\n
\n auto tp = ThreadPool<task_t>::GetInstance();
\n Route r;
\n\/\/\u6700\u5173\u952e\u7684\u5730\u65b9，\u4e0d\u540c\u6a21\u5757\u4e4b\u95f4\u7684\u8fde\u63a5
\n unique_ptr<Udpserver> usvr = make_unique<Udpserver>(port,[&r,&tp](int sockfd,const string &message, InetAddr&peer){
\n task_t t=std::bind(&Route::MessageRoute,&r,sockfd,message,peer);
\n tp->Enqueue(t);
\n\/\/std::bind( \u51fd\u6570\u5730\u5740, \u5bf9\u8c61\u6307\u9488, \u53c2\u65701, \u53c2\u65702, \u53c2\u65703 … );
\n\/\/\u6210\u5458\u51fd\u6570\u8981this\u6307\u9488，\u5e76\u4e14Route::MessageRoute\u4e0d\u662f\u5730\u5740\u8981\u52a0&\u548c\u666e\u901a\u51fd\u6570\u4e0d\u4e00\u6837
\n });
\n usvr->Init();
\n usvr->Start();<\/p>\n
\n}<\/p>\n
\n#include <string>
\n#include <cstring>
\n#include <netinet\/in.h>
\n#include <arpa\/inet.h>
\n#include <sys\/types.h>
\n#include <sys\/socket.h><\/p>\n
\n\/\/.\/udpclient ip port
\nusing namespace ThreadModlue;
\nstring server_ip;
\nint server_port;
\nuint16_t sockfd;
\nint id;
\nvoid Send()
\n{
\n while (1)
\n {
\n struct sockaddr_in server;
\n memset(&server, 0, sizeof(server));
\n server.sin_family = AF_INET;
\n server.sin_addr.s_addr = inet_addr(server_ip.c_str());
\n server.sin_port = htons(server_port);<\/p>\n
\n sendto(sockfd, online.c_str(), online.size(), 0, (struct sockaddr *)&server, sizeof(server));<\/p>\n
\n {
\n string buffer;
\n cout << "Please Enter#" ;
\n getline(cin, buffer);
\n \/\/ \u53d1\u9001
\n ssize_t s = sendto(sockfd, buffer.c_str(), buffer.size(), 0, (struct sockaddr *)&server, sizeof(server));
\n (void)s;
\n if (buffer == "QUIT")
\n {
\n pthread_cancel(id);
\n break;
\n }
\n }
\n }
\n}
\nvoid Recv()
\n{
\n while (true)
\n {
\n char buffer[1024];
\n struct sockaddr_in peer;
\n socklen_t len = sizeof(peer);
\n int m = recvfrom(sockfd, buffer, sizeof(buffer) – 1, 0, (struct sockaddr *)&peer, &len);
\n if (m > 0)
\n {
\n buffer[m] = 0;
\n std::cerr << buffer << std::endl; \/\/ \u4e3a\u4ec0\u4e48\u8981\u7528cerr\u56e0\u4e3a\u5bf9\u5e942\u53f7\u6587\u4ef6，\u5373\u53ea\u4f1a\u663e\u793a\u6536\u5230\u7684\u4fe1\u606f，\u4e0d\u4f1a\u51fa\u73b0，tty\u770b\u5f53\u524d\u5904\u4e8e\u54ea\u4e00\u4e2a\u7ec8\u7aef
\n \/\/"Please Enter#"
\n }
\n }<\/p>\n
\nint main(int argc, char *argv[])
\n{
\n Enable_Console_Log_Strategy();<\/p>\n
\n {
\n cerr << "Usage:.\/udpclient ip port" << endl;
\n return 1;
\n }
\n \/\/ 1. \u521b\u5efasocket
\n sockfd = socket(AF_INET, SOCK_DGRAM, 0);
\n if (sockfd < 0)
\n {
\n std::cerr << "socket error" << std::endl;
\n return 2;
\n }
\n server_ip = argv[1];
\n server_port = stoi(argv[2]);<\/p>\n
\n Thread sender(Send);<\/p>\n
\n sender.Start();<\/p>\n
\n sender.Join();<\/p>\n
\n}<\/p><\/p>\n","protected":false},"excerpt":{"rendered":"