\u8fd9\u91cc<\/a>\u7684\u6587\u7ae0\u3002<\/p>\n1.\u5ba2\u6237\u7a0b\u5e8f\u8bbe\u8ba1<\/h4>\n
\u5728\u57fa\u4e8esocket\u7684C\/S\u6a21\u578b\u4e2d\uff0c\u5ba2\u6237\u7a0b\u5e8f\u5f80\u5f80\u6bd4\u670d\u52a1\u5668\u7a0b\u5e8f\u7b80\u5355\u7684\u591a\u3002\u5ba2\u6237\u7a0b\u5e8f\u901a\u5e38\u5b8c\u6210\u7684\u5de5\u4f5c\u662f\uff1a\u901a\u8fc7socket\u51fd\u6570\u521b\u5efa\u4e00\u4e2a\u5957\u63a5\u5b57\uff1bconnect\u5230\u670d\u52a1\u5668\uff1b\u5982\u679c\u8fde\u63a5\u6210\u529f\uff0c\u5219\u4e0e\u670d\u52a1\u5668\u8fdb\u884c\u6570\u636e\u4ea4\u4e92\uff0c\u5177\u4f53\u4e3a\u4ece\u670d\u52a1\u5668\u8bfb\u53d6\u6570\u636e\u6216\u5411\u670d\u52a1\u5668\u5199\u5165\u6570\u636e\u3002\u5ba2\u6237\u7a0b\u5e8f\u7684\u6838\u5fc3\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
int main(int argc, char **argv)\r\n{\r\n\tint sockfd, n;\r\n\tchar recvline[MAXLINE + 1];\r\n\tstruct sockaddr_in serv_addr;\r\n\r\n\tif (argc != 2) {\r\n\t\tprintf(\"Usage:a.out \\n\");\r\n\t\texit(1);\r\n\t}\r\n\r\n\tif ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0)\r\n\t\tmy_error(\"socket\", errno, __LINE__);\r\n\r\n\tmemset(&serv_addr, 0, sizeof(serv_addr));\r\n\tserv_addr.sin_family = AF_INET;\r\n\tserv_addr.sin_port = htons(4555);\r\n\r\n\tif (inet_pton(AF_INET, argv[1], &serv_addr.sin_addr) <= 0)\r\n \t\tmy_error(\"inet_pton\", errno, __LINE__);\r\n \tif (connect(sockfd, (struct sockaddr *)&serv_addr, sizeof(struct sockaddr)) == -1)\r\n \t\tmy_error(\"connect\", errno, __LINE__);\r\n \twhile ((n = read(sockfd, recvline, MAXLINE)) > 0) {\r\n\t\trecvline[n] = 0;\r\n\t\tif (fputs(recvline, stdout) == EOF)\r\n\t\t\tmy_error(\"fputs\", errno, __LINE__);\r\n\t}\r\n\r\n\tif (n < 0)\r\n\t\tprintf(\"Error:read error\\n\");\r\n\r\n\texit(0);\r\n}<\/pre>\n\u5173\u4e8e\u5ba2\u6237\u7aef\u7a0b\u5e8f\u7684\u8bbe\u8ba1\uff0c\u8bf4\u660e\u5982\u4e0b\uff1a<\/p>\n
1.\u5ba2\u6237\u7aef\u7a0b\u5e8f\u6bcf\u6b21\u542f\u52a8\u65f6\uff0c\u4ee5\u547d\u4ee4\u884c\u53c2\u6570\u5f62\u5f0f\u5c06\u670d\u52a1\u5668IP\u4f20\u9012\u7ed9\u5ba2\u6237\u7aef\u3002\u56e0\u6b64\u7a0b\u5e8f\u4e00\u5f00\u59cb\u5fc5\u987b\u68c0\u6d4b\u547d\u4ee4\u884c\u53c2\u6570\u7684\u5408\u7406\u6027\uff1b<\/p>\n
2.\u7531\u4e8e\u6211\u4eec\u7684C\/S\u6a21\u578b\u662f\u57fa\u4e8eTCP\u7684\u5b57\u8282\u6d41\u5957\u63a5\u5b57\uff0c\u56e0\u6b64\u76f8\u5e94\u7684\u5bf9socket\u51fd\u6570\u4f7f\u7528AF_INET\u548cSOCK_STREAM\u53c2\u6570\u3002socket\u51fd\u6570\u8fd4\u56de\u4e00\u4e2a\u6574\u5f62\u7684\u5957\u63a5\u5b57\u63cf\u8ff0\u7b26\uff0c\u5728\u5ba2\u6237\u7a0b\u5e8f\u4e2d\u8981\u4f7f\u7528\u7684connet\u548cread\u7b49\u51fd\u6570\u5c06\u4f9d\u9760\u6b64\u63cf\u8ff0\u7b26\u6765\u5bf9\u5957\u63a5\u5b57\u8fdb\u884c\u64cd\u4f5c\uff1b<\/p>\n
3.\u5728\u5ba2\u6237\u8fde\u63a5\u81f3\u670d\u52a1\u5668\u4e4b\u524d\u524d\uff0c\u5fc5\u987b\u8bbe\u7f6e\u7f51\u9645\u5957\u63a5\u5b57\u5730\u5740\u7ed3\u6784\uff0c\u5373\u4f9d\u6b21\u5bf9sockaddr_in\u7ed3\u6784\u4e2d\u7684\u5b57\u6bb5\u586b\u5165\u6b63\u786e\u7684\u503c\u3002htons\u51fd\u6570\u5c06\u4e3b\u673a\u5b57\u8282\u5e8f\u5217\u8f6c\u6362\u6210\u7f51\u7edc\u5b57\u8282\u5e8f\u5217\uff1binet_pton\u51fd\u6570\u5219\u662f\u5c06\u5b57\u7b26\u5f62\u5f0f\u7684IP\u5730\u5740\u8f6c\u6362\u6210\u4e8c\u8fdb\u5236\u6570\u503c\u5f62\u5f0f\uff1b<\/p>\n
4.connect\u5c06\u4e0e\u5176\u7b2c\u4e8c\u4e2a\u53c2\u6570\u6240\u6307\u5b9a\u7684\u670d\u52a1\u5668\u5efa\u7acb\u4e00\u4e2aTCP\u8fde\u63a5\u3002connect\u51fd\u6570\u7684\u7b2c\u4e8c\u4e2a\u53c2\u6570\u4e3a\u901a\u7528\u5957\u63a5\u5b57\u5730\u5740\u7ed3\u6784sockaddr\uff0c\u56e0\u6b64\u5fc5\u987b\u5bf9\u7f51\u9645\u5957\u63a5\u5b57\u5730\u5740\u7ed3\u6784\u8fdb\u884c\u5f3a\u5236\u7c7b\u578b\u8f6c\u6362\uff1b<\/p>\n
5.\u901a\u8fc7\u5957\u63a5\u5b57\u63cf\u8ff0\u7b26sockfd\u4ece\u670d\u52a1\u5668\u7aef\u8fdb\u884c\u8bfb\u6570\u636e\uff0c\u5e76\u901a\u8fc7fputs\u51fd\u6570\u5c06\u8bfb\u5230\u7684\u6570\u636e\u663e\u793a\u5728\u6807\u51c6\u8f93\u51fa\u8bbe\u5907\uff1b<\/p>\n
2.\u670d\u52a1\u5668\u7a0b\u5e8f\u8bbe\u8ba1<\/h4>\n
\u670d\u52a1\u5668\u7a0b\u5e8f\u6309\u7167\u4ee5\u4e0b\u6b65\u9aa4\u8fdb\u884c\u8bbe\u8ba1\uff1asocket\u4e00\u4e2a\u5957\u63a5\u5b57\uff1b\u5c06\u670d\u52a1\u5668\u7aef\u53e3bind\u5230\u670d\u52a1\u5668\u5957\u63a5\u5b57\u4e0a\uff1b\u901a\u8fc7listen\u51fd\u6570\u5c06\u670d\u52a1\u5668\u5957\u63a5\u5b57\u8f6c\u6362\u6210\u76d1\u542c\u5957\u63a5\u5b57\uff1baccept\u5ba2\u6237\u7aef\u7684\u8fde\u63a5\uff1b\u5982\u679c\u8fde\u63a5\u6210\u529f\uff0c\u5219\u4e0e\u5ba2\u6237\u7aef\u8fdb\u884c\u6570\u636e\u4ea4\u4e92\uff1b\u7ec8\u6b62\u8fde\u63a5\u3002\u670d\u52a1\u5668\u7a0b\u5e8f\u6838\u5fc3\u7a0b\u5e8f\u5982\u4e0b\u6240\u793a\u3002<\/p>\n
int main(int argc, char **argv)\r\n{\r\n\tint listenfd, connfd;\r\n\tstruct sockaddr_in serv_addr, client_addr;\r\n\tchar buf[MAXLINE];\r\n\ttime_t ticks;\r\n\tint addr_size;\r\n\r\n\tif ((listenfd = socket(AF_INET, SOCK_STREAM, 0)) == -1)\r\n\t\tmy_error(\"socket\", errno, __LINE__);\r\n\r\n\tmemset(&serv_addr, 0, sizeof(struct sockaddr_in));\r\n\tserv_addr.sin_family = AF_INET;\r\n\tserv_addr.sin_addr.s_addr = htonl(INADDR_ANY);\r\n\tserv_addr.sin_port = htons(4555);\r\n\r\n\tif (bind(listenfd, (struct sockaddr *)&serv_addr, sizeof(struct sockaddr)) == -1)\r\n\t\tmy_error(\"bind\", errno, __LINE__);\r\n\r\n\tif (listen(listenfd, LISTENQ) == -1)\r\n\t\tmy_error(\"listen\", errno, __LINE__);\r\n\r\n\tfor (;;) {\r\n\t\taddr_size = sizeof(struct sockaddr);\r\n\t\tif ((connfd = accept(listenfd, (struct sockaddr*)&client_addr, &addr_size)) == -1)\r\n\t\t\tmy_error(\"accept\", errno, __LINE__);\r\n\r\n\t\tprintf(\"%s has connectd to server..\\n\", inet_ntoa(client_addr.sin_addr));\r\n\t\tticks = time(NULL);\r\n\t\tsnprintf(buf, sizeof(buf), \"%.24s\\r\\n\", ctime(&ticks));\r\n\t\tif (write(connfd, buf, strlen(buf)) < 0)\r\n\t\t\tmy_error(\"write\", errno, __LINE__);\r\n\r\n\t\tclose(connfd);\r\n\t}\r\n}<\/pre>\n\u5173\u4e8e\u670d\u52a1\u5668\u7a0b\u5e8f\u7684\u76f8\u5173\u7ec6\u8282\uff0c\u8bf4\u660e\u5982\u4e0b\uff1a<\/p>\n
1.\u5728\u8bbe\u7f6e\u7f51\u9645\u5957\u63a5\u5b57\u5730\u5740\u65f6\uff0c\u5c06IP\u5730\u5740\u6307\u5b9a\u4e3aINADDR_ANY\u3002\u5982\u679c\u670d\u52a1\u5668\u4e3b\u673a\u6709\u591a\u4e2a\u7f51\u7edc\u63a5\u53e3\uff0c\u90a3\u4e48\u670d\u52a1\u5668\u8fdb\u7a0b\u5c31\u53ef\u4ee5\u5728\u4efb\u610f\u7f51\u7edc\u63a5\u53e3\u4e0a\u63a5\u53d7\u5ba2\u6237\u8fde\u63a5\uff1b<\/p>\n
2.listen\u51fd\u6570\u5c06\u5957\u63a5\u5b57\u8f6c\u6362\u6210\u76d1\u542c\u5957\u63a5\u5b57\uff0c\u8fd9\u6837\u5185\u6838\u5c31\u53ef\u4ee5\u901a\u8fc7\u8be5\u5957\u63a5\u5b57\u63a5\u53d7\u5ba2\u6237\u7aef\u7684\u5916\u6765\u8fde\u63a5\u8bf7\u6c42\uff1b<\/p>\n
3.socket\u3001bind\u548clisten\u8fd9\u4e09\u6b65\u662fTCP\u670d\u52a1\u5668\u83b7\u5f97\u76d1\u542c\u5957\u63a5\u5b57\u63cf\u8ff0\u7b26\u7684\u901a\u7528\u6b65\u9aa4\uff1b<\/p>\n
4.\u670d\u52a1\u5668\u7684\u8fde\u7eed\u8fd0\u8f6c\u662f\u901a\u8fc7\u6b7b\u5faa\u73af\u6765\u5b9e\u73b0\u7684\uff0c\u5e76\u901a\u8fc7accept\u51fd\u6570\u4f7f\u5f97\u670d\u52a1\u5668\u7a0b\u5e8f\u4e0d\u4f1a\u8fc7\u4e8e\u5360\u636e\u7cfb\u7edf\u5185\u5b58\u3002\u901a\u5e38\u670d\u52a1\u5668\u8fdb\u7a0b\u901a\u8fc7accept\u51fd\u6570\u8fdb\u5165\u963b\u585e\u72b6\u6001\uff0c\u76f4\u5230\u67d0\u4e2a\u5ba2\u6237\u8fde\u63a5\u5230\u8fbe\u65f6\u624d\u4f1a\u88ab\u5524\u9192\u3002\u5ba2\u6237\u548c\u670d\u52a1\u5668\u4e4b\u95f4\u7684TCP\u8fde\u63a5\u662f\u901a\u8fc7\u4e09\u6b21\u63e1\u624b\u6765\u5efa\u7acb\u7684\uff0caccept\u51fd\u6570\u5efa\u7acb\u8fde\u63a5\u6210\u529f\u540e\u4f1a\u8fd4\u56de\u53e6\u4e00\u4e2a\u5957\u63a5\u5b57\u63cf\u8ff0\u7b26\u2014\u2014\u5df2\u8fde\u63a5\u5957\u63a5\u5b57\u3002\u8be5\u5957\u63a5\u5b57\u7528\u4e8e\u548c\u521a\u521a\u8fde\u63a5\u7684\u5ba2\u6237\u8fdb\u884c\u901a\u4fe1\u3002<\/p>\n
5.time\u51fd\u6570\u5c06\u8fd4\u56de1970\u5e741\u67081\u65e5\u81f3\u73b0\u5728\u7684\u79d2\u6570\uff0c\u800cctime\u51fd\u6570\u5c06\u8fd9\u4e9b\u79d2\u6570\u8f6c\u6362\u6210\u53cb\u597d\u7684\u65f6\u95f4\u683c\u5f0f\uff1b<\/p>\n
6.wirte\u51fd\u6570\u901a\u8fc7\u5df2\u8fde\u63a5\u5957\u63a5\u5b57connfd\u5c06\u65f6\u95f4\u4fe1\u606f\u53d1\u9001\u81f3\u5ba2\u6237\u7aef\uff1b<\/p>\n
\u901a\u8fc7\u670d\u52a1\u5668\u7a0b\u5e8f\u6211\u4eec\u53ef\u4ee5\u770b\u5230\uff0c\u5982\u679c\u670d\u52a1\u5668\u6ca1\u6709\u5904\u7406\u5ba2\u6237\u7aef\u7684\u8bf7\u6c42\uff0c\u90a3\u4e48\u5b83\u5c06\u4e00\u76f4\u5904\u4e8e\u963b\u585e\u72b6\u6001\uff1b\u5982\u679c\u670d\u52a1\u5668\u6b63\u5728\u5904\u7406\u6765\u81ea\u5ba2\u6237\u7aef\u7684\u8fde\u63a5\u8bf7\u6c42\uff0c\u90a3\u4e48\u5176\u4ed6\u8bf7\u6c42\u8fde\u63a5\u81f3\u670d\u52a1\u5668\u7684\u5ba2\u6237\u8fdb\u7a0b\u5219\u4e00\u76f4\u5904\u4e8e\u963b\u585e\u72b6\u6001\u3002\u53ea\u6709\u5f53\u670d\u52a1\u5668\u5904\u7406\u5b8c\u5f53\u524d\u5ba2\u6237\u7684\u8fde\u63a5\u8bf7\u6c42\u65f6\uff0c\u5176\u4ed6\u5ba2\u6237\u7684\u8fde\u63a5\u8bf7\u6c42\u624d\u6709\u673a\u4f1a\u88ab\u670d\u52a1\u5668\u5904\u7406\u3002\u6211\u4eec\u5c06\u6b64\u670d\u52a1\u5668\u79f0\u4e4b\u4e3a\u8fed\u4ee3\u5f0f\u670d\u52a1\u5668\uff0c\u4e5f\u5c31\u662f\u8bf4\u670d\u52a1\u5668\u5bf9\u4e8e\u6bcf\u4e2a\u5ba2\u6237\u90fd\u5c06\u8fed\u4ee3\u6267\u884c\u4e00\u6b21\u3002<\/p>\n
\u4e0a\u8ff0\u6240\u793a\u4f8b\u7684\u8fed\u4ee3\u670d\u52a1\u5668\u9002\u7528\u6027\u5f88\u5dee\uff0c\u56e0\u4e3a\u5728\u670d\u52a1\u5668\u5904\u7406\u5f53\u524d\u7684\u5ba2\u6237\u8bf7\u6c42\u4e4b\u524d\uff0c\u5176\u4f59\u7b49\u5f85\u7684\u5ba2\u6237\u7a0b\u5e8f\u90fd\u4e0d\u80fd\u88ab\u5904\u7406\u3002\u4f46\u5b83\u4f5c\u4e3a\u4e00\u4e2a\u57fa\u672c\u7684C\/S\u6a21\u578b\uff0c\u5bf9\u4e8e\u521d\u5b66\u8005\u4ee5\u53ca\u7406\u89e3\u540e\u7eedC\/S\u6a21\u578b\u90fd\u6709\u6781\u5927\u5e2e\u52a9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
TCP\u5ba2\u6237\/\u670d\u52a1\u5668\u7a0b\u5e8f\u8bbe\u8ba1\u6a21\u578b-\u8fed\u4ee3\u670d\u52a1\u5668 \u672c\u535a\u5ba2\u5c06\u4ece\u672c\u6587\u5f00\u59cb\u6301\u7eed\u66f4\u65b0\u57fa\u4e8eTCP\u7684C\/S\u7a0b\u5e8f\u8bbe\u8ba1\u57fa\u672c\u6a21\u578b\u7cfb\u5217\u6587 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[208],"tags":[],"class_list":["post-3092","post","type-post","status-publish","format-standard","hentry","category-208"],"views":5778,"_links":{"self":[{"href":"http:\/\/edsionte.com\/techblog\/wp-json\/wp\/v2\/posts\/3092","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/edsionte.com\/techblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/edsionte.com\/techblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/edsionte.com\/techblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/edsionte.com\/techblog\/wp-json\/wp\/v2\/comments?post=3092"}],"version-history":[{"count":0,"href":"http:\/\/edsionte.com\/techblog\/wp-json\/wp\/v2\/posts\/3092\/revisions"}],"wp:attachment":[{"href":"http:\/\/edsionte.com\/techblog\/wp-json\/wp\/v2\/media?parent=3092"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/edsionte.com\/techblog\/wp-json\/wp\/v2\/categories?post=3092"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/edsionte.com\/techblog\/wp-json\/wp\/v2\/tags?post=3092"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}