{"id":44956,"date":"2025-06-21T07:25:56","date_gmt":"2025-06-20T23:25:56","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/44956.html"},"modified":"2025-06-21T07:25:56","modified_gmt":"2025-06-20T23:25:56","slug":"%e5%88%86%e7%a6%bb%e7%9a%84-tcp-%e6%9c%8d%e5%8a%a1%e5%99%a8%e4%b8%8e%e5%ae%a2%e6%88%b7%e7%ab%af%e5%ae%9e%e7%8e%b0-python3%e5%ae%9e%e7%8e%b0","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/44956.html","title":{"rendered":"\u5206\u79bb\u7684 TCP \u670d\u52a1\u5668\u4e0e\u5ba2\u6237\u7aef\u5b9e\u73b0-Python3\u5b9e\u73b0"},"content":{"rendered":"<\/p>\n<h4>\u6587\u7ae0\u76ee\u5f55<\/h4>\n<ul>\n<li>\u5206\u79bb\u7684 TCP \u670d\u52a1\u5668\u4e0e\u5ba2\u6237\u7aef\u5b9e\u73b0<\/li>\n<li>\n<ul>\n<li>\u670d\u52a1\u5668\u7aef\u4ee3\u7801 (&#096;tcp_server.py&#096;)<\/li>\n<li>\u5ba2\u6237\u7aef\u4ee3\u7801 (&#096;tcp_client.py&#096;)<\/li>\n<li>\u4f7f\u7528\u8bf4\u660e<\/li>\n<li>\n<ul>\n<li>1. \u542f\u52a8\u670d\u52a1\u5668 (192.168.80.254)<\/li>\n<li>2. \u542f\u52a8\u5ba2\u6237\u7aef (\u8fde\u63a5\u5230192.168.80.254)<\/li>\n<\/ul>\n<\/li>\n<li>\u5b9e\u73b0\u7279\u70b9<\/li>\n<li>\n<ul>\n<li>1. \u670d\u52a1\u5668\u7aef\u7279\u70b9<\/li>\n<li>2. \u5ba2\u6237\u7aef\u7279\u70b9<\/li>\n<li>3. \u7f51\u7edc\u4ea4\u4e92\u6d41\u7a0b<\/li>\n<\/ul>\n<\/li>\n<li>\u6d4b\u8bd5\u573a\u666f<\/li>\n<li>\n<ul>\n<li>1. \u57fa\u672c\u901a\u4fe1\u6d4b\u8bd5<\/li>\n<li>2. \u538b\u529b\u6d4b\u8bd5<\/li>\n<li>3. \u5f02\u5e38\u60c5\u51b5\u6d4b\u8bd5<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>\u5206\u79bb\u7684 TCP \u670d\u52a1\u5668\u4e0e\u5ba2\u6237\u7aef\u5b9e\u73b0<\/h2>\n<p>\u4ee5\u4e0b\u662f\u5206\u79bb\u7684TCP\u670d\u52a1\u5668\u548c\u5ba2\u6237\u7aef\u4ee3\u7801&#xff0c;\u670d\u52a1\u5668\u7ed1\u5b9a\u5230192.168.80.254\u5730\u5740&#xff1a;<\/p>\n<h3>\u670d\u52a1\u5668\u7aef\u4ee3\u7801 (tcp_server.py)<\/h3>\n<p><span class=\"token keyword\">import<\/span> socket<br \/>\n<span class=\"token keyword\">import<\/span> threading<br \/>\n<span class=\"token keyword\">import<\/span> logging<br \/>\n<span class=\"token keyword\">import<\/span> argparse<br \/>\n<span class=\"token keyword\">import<\/span> selectors<\/p>\n<p><span class=\"token comment\"># \u914d\u7f6e\u65e5\u5fd7<\/span><br \/>\nlogging<span class=\"token punctuation\">.<\/span>basicConfig<span class=\"token punctuation\">(<\/span><br \/>\n    level<span class=\"token operator\">&#061;<\/span>logging<span class=\"token punctuation\">.<\/span>INFO<span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token builtin\">format<\/span><span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#039;%(asctime)s [%(threadName)-15s] %(levelname)-8s: %(message)s&#039;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    datefmt<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#039;%H:%M:%S&#039;<\/span><br \/>\n<span class=\"token punctuation\">)<\/span><br \/>\nlogger <span class=\"token operator\">&#061;<\/span> logging<span class=\"token punctuation\">.<\/span>getLogger<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;tcp_server&#039;<\/span><span class=\"token punctuation\">)<\/span><br \/>\nlogger<span class=\"token punctuation\">.<\/span>setLevel<span class=\"token punctuation\">(<\/span>logging<span class=\"token punctuation\">.<\/span>DEBUG<span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">TCPServer<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u7ed1\u5b9a\u5230192.168.80.254\u7684\u9ad8\u6548TCP\u670d\u52a1\u5668&#034;&#034;&#034;<\/span><br \/>\n    <span class=\"token keyword\">def<\/span> <span class=\"token function\">__init__<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">,<\/span> host<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#039;192.168.80.254&#039;<\/span><span class=\"token punctuation\">,<\/span> port<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">int<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">12345<\/span><span class=\"token punctuation\">,<\/span> max_connections<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">int<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        self<span class=\"token punctuation\">.<\/span>host <span class=\"token operator\">&#061;<\/span> host<br \/>\n        self<span class=\"token punctuation\">.<\/span>port <span class=\"token operator\">&#061;<\/span> port<br \/>\n        self<span class=\"token punctuation\">.<\/span>max_connections <span class=\"token operator\">&#061;<\/span> max_connections<br \/>\n        self<span class=\"token punctuation\">.<\/span>running <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">False<\/span><br \/>\n        self<span class=\"token punctuation\">.<\/span>connections <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><br \/>\n        self<span class=\"token punctuation\">.<\/span>connection_counter <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><br \/>\n        self<span class=\"token punctuation\">.<\/span>server_socket <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">None<\/span><br \/>\n        self<span class=\"token punctuation\">.<\/span>selector <span class=\"token operator\">&#061;<\/span> selectors<span class=\"token punctuation\">.<\/span>DefaultSelector<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token keyword\">def<\/span> <span class=\"token function\">start<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u542f\u52a8\u670d\u52a1\u5668&#034;&#034;&#034;<\/span><br \/>\n        <span class=\"token keyword\">try<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token comment\"># \u786e\u4fdd\u7ed1\u5b9a\u5230\u6307\u5b9aIP<\/span><br \/>\n            logger<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;&#x1f6e0;\ufe0f \u914d\u7f6e\u670d\u52a1\u5668\u7ed1\u5b9a\u5230 <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>self<span class=\"token punctuation\">.<\/span>host<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">:<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>self<span class=\"token punctuation\">.<\/span>port<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>            <span class=\"token comment\"># \u521b\u5efa\u670d\u52a1\u5668\u5957\u63a5\u5b57<\/span><br \/>\n            self<span class=\"token punctuation\">.<\/span>server_socket <span class=\"token operator\">&#061;<\/span> socket<span class=\"token punctuation\">.<\/span>socket<span class=\"token punctuation\">(<\/span>socket<span class=\"token punctuation\">.<\/span>AF_INET<span class=\"token punctuation\">,<\/span> socket<span class=\"token punctuation\">.<\/span>SOCK_STREAM<span class=\"token punctuation\">)<\/span><br \/>\n            self<span class=\"token punctuation\">.<\/span>server_socket<span class=\"token punctuation\">.<\/span>setsockopt<span class=\"token punctuation\">(<\/span>socket<span class=\"token punctuation\">.<\/span>SOL_SOCKET<span class=\"token punctuation\">,<\/span> socket<span class=\"token punctuation\">.<\/span>SO_REUSEADDR<span class=\"token punctuation\">,<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>            <span class=\"token comment\"># \u7ed1\u5b9a\u5230\u6307\u5b9aIP\u5730\u5740<\/span><br \/>\n            self<span class=\"token punctuation\">.<\/span>server_socket<span class=\"token punctuation\">.<\/span>bind<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">.<\/span>host<span class=\"token punctuation\">,<\/span> self<span class=\"token punctuation\">.<\/span>port<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            self<span class=\"token punctuation\">.<\/span>server_socket<span class=\"token punctuation\">.<\/span>listen<span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">.<\/span>max_connections<span class=\"token punctuation\">)<\/span><br \/>\n            self<span class=\"token punctuation\">.<\/span>server_socket<span class=\"token punctuation\">.<\/span>setblocking<span class=\"token punctuation\">(<\/span><span class=\"token boolean\">False<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            self<span class=\"token punctuation\">.<\/span>running <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">True<\/span><\/p>\n<p>            <span class=\"token comment\"># \u6ce8\u518c\u670d\u52a1\u5668\u5957\u63a5\u5b57<\/span><br \/>\n            self<span class=\"token punctuation\">.<\/span>selector<span class=\"token punctuation\">.<\/span>register<span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">.<\/span>server_socket<span class=\"token punctuation\">,<\/span> selectors<span class=\"token punctuation\">.<\/span>EVENT_READ<span class=\"token punctuation\">,<\/span> data<span class=\"token operator\">&#061;<\/span><span class=\"token boolean\">None<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>            logger<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;&#x1f680; \u670d\u52a1\u5668\u542f\u52a8&#xff0c;\u76d1\u542c <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>self<span class=\"token punctuation\">.<\/span>host<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">:<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>self<span class=\"token punctuation\">.<\/span>port<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#xff0c;\u72b6\u6001: LISTEN&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n            logger<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u2699\ufe0f \u670d\u52a1\u5668\u914d\u7f6e: \u6700\u5927\u8fde\u63a5\u6570&#061;<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>self<span class=\"token punctuation\">.<\/span>max_connections<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>            <span class=\"token comment\"># \u4e3b\u4e8b\u4ef6\u5faa\u73af<\/span><br \/>\n            <span class=\"token keyword\">while<\/span> self<span class=\"token punctuation\">.<\/span>running<span class=\"token punctuation\">:<\/span><br \/>\n                events <span class=\"token operator\">&#061;<\/span> self<span class=\"token punctuation\">.<\/span>selector<span class=\"token punctuation\">.<\/span>select<span class=\"token punctuation\">(<\/span>timeout<span class=\"token operator\">&#061;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><br \/>\n                <span class=\"token keyword\">for<\/span> key<span class=\"token punctuation\">,<\/span> mask <span class=\"token keyword\">in<\/span> events<span class=\"token punctuation\">:<\/span><br \/>\n                    <span class=\"token keyword\">if<\/span> key<span class=\"token punctuation\">.<\/span>data <span class=\"token keyword\">is<\/span> <span class=\"token boolean\">None<\/span><span class=\"token punctuation\">:<\/span><br \/>\n                        <span class=\"token comment\"># \u670d\u52a1\u5668\u5957\u63a5\u5b57\u6709\u65b0\u8fde\u63a5<\/span><br \/>\n                        self<span class=\"token punctuation\">.<\/span>_accept_connection<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n                    <span class=\"token keyword\">else<\/span><span class=\"token punctuation\">:<\/span><br \/>\n                        <span class=\"token comment\"># \u5ba2\u6237\u7aef\u5957\u63a5\u5b57\u6709\u4e8b\u4ef6<\/span><br \/>\n                        self<span class=\"token punctuation\">.<\/span>_service_client<span class=\"token punctuation\">(<\/span>key<span class=\"token punctuation\">,<\/span> mask<span class=\"token punctuation\">)<\/span><\/p>\n<p>            logger<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;&#x1f6d1; \u670d\u52a1\u5668\u5df2\u505c\u6b62&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">except<\/span> Exception <span class=\"token keyword\">as<\/span> e<span class=\"token punctuation\">:<\/span><br \/>\n            logger<span class=\"token punctuation\">.<\/span>exception<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u670d\u52a1\u5668\u5f02\u5e38: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>e<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">finally<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            self<span class=\"token punctuation\">.<\/span>_cleanup<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token keyword\">def<\/span> <span class=\"token function\">_accept_connection<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u63a5\u53d7\u65b0\u8fde\u63a5\u5e76\u5904\u7406\u4e09\u6b21\u63e1\u624b&#034;&#034;&#034;<\/span><br \/>\n        <span class=\"token keyword\">try<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            client_socket<span class=\"token punctuation\">,<\/span> addr <span class=\"token operator\">&#061;<\/span> self<span class=\"token punctuation\">.<\/span>server_socket<span class=\"token punctuation\">.<\/span>accept<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            client_socket<span class=\"token punctuation\">.<\/span>setblocking<span class=\"token punctuation\">(<\/span><span class=\"token boolean\">False<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            client_id <span class=\"token operator\">&#061;<\/span> self<span class=\"token punctuation\">.<\/span>connection_counter <span class=\"token operator\">&#061;<\/span> self<span class=\"token punctuation\">.<\/span>connection_counter <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">1<\/span><\/p>\n<p>            logger<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;&#x1f501; \u6536\u5230\u6765\u81ea <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>addr<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\"> \u7684SYN&#xff0c;\u72b6\u6001: SYN_RCVD&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>            <span class=\"token comment\"># \u5b58\u50a8\u5ba2\u6237\u7aef\u4fe1\u606f<\/span><br \/>\n            self<span class=\"token punctuation\">.<\/span>connections<span class=\"token punctuation\">[<\/span>client_id<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token string\">&#039;socket&#039;<\/span><span class=\"token punctuation\">:<\/span> client_socket<span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#039;addr&#039;<\/span><span class=\"token punctuation\">:<\/span> addr<span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#039;state&#039;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#039;SYN_RCVD&#039;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token string\">&#039;buffer&#039;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">b&#039;&#039;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><\/p>\n<p>            <span class=\"token comment\"># \u6ce8\u518c\u5ba2\u6237\u7aef\u5957\u63a5\u5b57<\/span><br \/>\n            self<span class=\"token punctuation\">.<\/span>selector<span class=\"token punctuation\">.<\/span>register<span class=\"token punctuation\">(<\/span><br \/>\n                client_socket<span class=\"token punctuation\">,<\/span><br \/>\n                selectors<span class=\"token punctuation\">.<\/span>EVENT_READ<span class=\"token punctuation\">,<\/span><br \/>\n                data<span class=\"token operator\">&#061;<\/span><span class=\"token punctuation\">{<\/span><span class=\"token string\">&#039;client_id&#039;<\/span><span class=\"token punctuation\">:<\/span> client_id<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;action&#039;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#039;handshake&#039;<\/span><span class=\"token punctuation\">}<\/span><br \/>\n            <span class=\"token punctuation\">)<\/span><\/p>\n<p>            <span class=\"token comment\"># \u53d1\u9001SYN-ACK (\u7b2c\u4e8c\u6b21\u63e1\u624b)<\/span><br \/>\n            logger<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;&#x1f4e4; \u5411 <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>addr<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\"> \u53d1\u9001SYN-ACK&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>            <span class=\"token comment\"># \u6a21\u62df\u63a5\u6536ACK (\u7b2c\u4e09\u6b21\u63e1\u624b)<\/span><br \/>\n            logger<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u23f3 \u7b49\u5f85\u6765\u81ea <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>addr<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\"> \u7684ACK&#8230;&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>        <span class=\"token keyword\">except<\/span> BlockingIOError<span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">pass<\/span><br \/>\n        <span class=\"token keyword\">except<\/span> Exception <span class=\"token keyword\">as<\/span> e<span class=\"token punctuation\">:<\/span><br \/>\n            logger<span class=\"token punctuation\">.<\/span>error<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u63a5\u53d7\u8fde\u63a5\u65f6\u51fa\u9519: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>e<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token keyword\">def<\/span> <span class=\"token function\">_service_client<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">,<\/span> key<span class=\"token punctuation\">,<\/span> mask<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u5904\u7406\u5ba2\u6237\u7aef\u4e8b\u4ef6&#034;&#034;&#034;<\/span><br \/>\n        client_info <span class=\"token operator\">&#061;<\/span> key<span class=\"token punctuation\">.<\/span>data<br \/>\n        client_id <span class=\"token operator\">&#061;<\/span> client_info<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;client_id&#039;<\/span><span class=\"token punctuation\">]<\/span><br \/>\n        action <span class=\"token operator\">&#061;<\/span> client_info<span class=\"token punctuation\">.<\/span>get<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;action&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;data&#039;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>        client_data <span class=\"token operator\">&#061;<\/span> self<span class=\"token punctuation\">.<\/span>connections<span class=\"token punctuation\">.<\/span>get<span class=\"token punctuation\">(<\/span>client_id<span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token keyword\">not<\/span> client_data<span class=\"token punctuation\">:<\/span><br \/>\n            logger<span class=\"token punctuation\">.<\/span>warning<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u627e\u4e0d\u5230\u5ba2\u6237\u7aef #<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>client_id<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token keyword\">return<\/span><\/p>\n<p>        client_socket <span class=\"token operator\">&#061;<\/span> client_data<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;socket&#039;<\/span><span class=\"token punctuation\">]<\/span><br \/>\n        addr <span class=\"token operator\">&#061;<\/span> client_data<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;addr&#039;<\/span><span class=\"token punctuation\">]<\/span><\/p>\n<p>        <span class=\"token keyword\">try<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">if<\/span> action <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token string\">&#039;handshake&#039;<\/span><span class=\"token punctuation\">:<\/span><br \/>\n                <span class=\"token comment\"># \u5b8c\u6210\u4e09\u6b21\u63e1\u624b<\/span><br \/>\n                <span class=\"token keyword\">if<\/span> client_data<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;state&#039;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token string\">&#039;SYN_RCVD&#039;<\/span><span class=\"token punctuation\">:<\/span><br \/>\n                    <span class=\"token comment\"># \u6a21\u62df\u63a5\u6536ACK\u5e76\u5b8c\u6210\u8fde\u63a5<\/span><br \/>\n                    client_data<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;state&#039;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#039;ESTABLISHED&#039;<\/span><\/p>\n<p>                    <span class=\"token comment\"># \u66f4\u65b0\u9009\u62e9\u5668\u6ce8\u518c<\/span><br \/>\n                    self<span class=\"token punctuation\">.<\/span>selector<span class=\"token punctuation\">.<\/span>modify<span class=\"token punctuation\">(<\/span><br \/>\n                        client_socket<span class=\"token punctuation\">,<\/span><br \/>\n                        selectors<span class=\"token punctuation\">.<\/span>EVENT_READ <span class=\"token operator\">|<\/span> selectors<span class=\"token punctuation\">.<\/span>EVENT_WRITE<span class=\"token punctuation\">,<\/span><br \/>\n                        data<span class=\"token operator\">&#061;<\/span><span class=\"token punctuation\">{<\/span><span class=\"token string\">&#039;client_id&#039;<\/span><span class=\"token punctuation\">:<\/span> client_id<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;action&#039;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#039;data&#039;<\/span><span class=\"token punctuation\">}<\/span><br \/>\n                    <span class=\"token punctuation\">)<\/span><\/p>\n<p>                    logger<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u2705 \u4e0e <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>addr<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\"> \u5b8c\u6210\u4e09\u6b21\u63e1\u624b&#xff0c;\u72b6\u6001: ESTABLISHED&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>            <span class=\"token keyword\">elif<\/span> mask <span class=\"token operator\">&amp;<\/span> selectors<span class=\"token punctuation\">.<\/span>EVENT_READ<span class=\"token punctuation\">:<\/span><br \/>\n                <span class=\"token comment\"># \u53ef\u8bfb\u4e8b\u4ef6 &#8211; \u63a5\u6536\u6570\u636e<\/span><br \/>\n                <span class=\"token keyword\">try<\/span><span class=\"token punctuation\">:<\/span><br \/>\n                    data <span class=\"token operator\">&#061;<\/span> client_socket<span class=\"token punctuation\">.<\/span>recv<span class=\"token punctuation\">(<\/span><span class=\"token number\">1024<\/span><span class=\"token punctuation\">)<\/span><br \/>\n                    <span class=\"token keyword\">if<\/span> <span class=\"token keyword\">not<\/span> data<span class=\"token punctuation\">:<\/span><br \/>\n                        <span class=\"token comment\"># \u5ba2\u6237\u7aef\u5173\u95ed\u8fde\u63a5<\/span><br \/>\n                        self<span class=\"token punctuation\">.<\/span>_initiate_close<span class=\"token punctuation\">(<\/span>client_id<span class=\"token punctuation\">)<\/span><br \/>\n                        <span class=\"token keyword\">return<\/span><\/p>\n<p>                    client_data<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;buffer&#039;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#043;&#061;<\/span> data<br \/>\n                    logger<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;&#x1f4e5; \u6536\u5230\u6765\u81ea <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>addr<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\"> \u7684\u6570\u636e: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>data<span class=\"token punctuation\">.<\/span>decode<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">:<\/span><span class=\"token format-spec\">50]<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span><span class=\"token string\">&#039;&#8230;&#039;<\/span> <span class=\"token keyword\">if<\/span> <span class=\"token builtin\">len<\/span><span class=\"token punctuation\">(<\/span>data<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&gt;<\/span> <span class=\"token number\">50<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token string\">&#039;&#039;<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>                    <span class=\"token comment\"># \u5904\u7406\u5b8c\u6574\u8bf7\u6c42 (\u6a21\u62df\u884c\u534f\u8bae)<\/span><br \/>\n                    <span class=\"token keyword\">if<\/span> <span class=\"token string\">b&#039;\\\\n&#039;<\/span> <span class=\"token keyword\">in<\/span> client_data<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;buffer&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">:<\/span><br \/>\n                        request<span class=\"token punctuation\">,<\/span> _<span class=\"token punctuation\">,<\/span> client_data<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;buffer&#039;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> client_data<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;buffer&#039;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span>partition<span class=\"token punctuation\">(<\/span><span class=\"token string\">b&#039;\\\\n&#039;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n                        self<span class=\"token punctuation\">.<\/span>_process_request<span class=\"token punctuation\">(<\/span>client_id<span class=\"token punctuation\">,<\/span> request<span class=\"token punctuation\">)<\/span><\/p>\n<p>                <span class=\"token keyword\">except<\/span> ConnectionResetError<span class=\"token punctuation\">:<\/span><br \/>\n                    logger<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u274c <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>addr<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\"> \u8fde\u63a5\u91cd\u7f6e&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n                    self<span class=\"token punctuation\">.<\/span>_close_client<span class=\"token punctuation\">(<\/span>client_id<span class=\"token punctuation\">)<\/span><\/p>\n<p>            <span class=\"token keyword\">elif<\/span> mask <span class=\"token operator\">&amp;<\/span> selectors<span class=\"token punctuation\">.<\/span>EVENT_WRITE <span class=\"token keyword\">and<\/span> client_data<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;state&#039;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token string\">&#039;ESTABLISHED&#039;<\/span><span class=\"token punctuation\">:<\/span><br \/>\n                <span class=\"token comment\"># \u53ef\u5199\u4e8b\u4ef6 &#8211; \u53d1\u9001\u6570\u636e<\/span><br \/>\n                <span class=\"token comment\"># \u8fd9\u4e2a\u793a\u4f8b\u4e2d\u4e0d\u4e3b\u52a8\u53d1\u9001\u6570\u636e&#xff0c;\u7b49\u5f85\u5ba2\u6237\u7aef\u8bf7\u6c42<\/span><br \/>\n                <span class=\"token keyword\">pass<\/span><\/p>\n<p>        <span class=\"token keyword\">except<\/span> Exception <span class=\"token keyword\">as<\/span> e<span class=\"token punctuation\">:<\/span><br \/>\n            logger<span class=\"token punctuation\">.<\/span>error<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u5904\u7406\u5ba2\u6237\u7aef <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>addr<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\"> \u65f6\u51fa\u9519: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>e<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n            self<span class=\"token punctuation\">.<\/span>_close_client<span class=\"token punctuation\">(<\/span>client_id<span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token keyword\">def<\/span> <span class=\"token function\">_process_request<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">,<\/span> client_id<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">int<\/span><span class=\"token punctuation\">,<\/span> request<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">bytes<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u5904\u7406\u5ba2\u6237\u7aef\u8bf7\u6c42&#034;&#034;&#034;<\/span><br \/>\n        client_data <span class=\"token operator\">&#061;<\/span> self<span class=\"token punctuation\">.<\/span>connections<span class=\"token punctuation\">.<\/span>get<span class=\"token punctuation\">(<\/span>client_id<span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token keyword\">not<\/span> client_data<span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">return<\/span><\/p>\n<p>        client_socket <span class=\"token operator\">&#061;<\/span> client_data<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;socket&#039;<\/span><span class=\"token punctuation\">]<\/span><br \/>\n        addr <span class=\"token operator\">&#061;<\/span> client_data<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;addr&#039;<\/span><span class=\"token punctuation\">]<\/span><\/p>\n<p>        <span class=\"token keyword\">try<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token comment\"># \u8bb0\u5f55\u8bf7\u6c42<\/span><br \/>\n            logger<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;&#x1f50d; \u5904\u7406\u6765\u81ea <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>addr<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\"> \u7684\u8bf7\u6c42: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>request<span class=\"token punctuation\">.<\/span>decode<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">:<\/span><span class=\"token format-spec\">30]<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span><span class=\"token string\">&#039;&#8230;&#039;<\/span> <span class=\"token keyword\">if<\/span> <span class=\"token builtin\">len<\/span><span class=\"token punctuation\">(<\/span>request<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&gt;<\/span> <span class=\"token number\">30<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token string\">&#039;&#039;<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>            <span class=\"token comment\"># \u521b\u5efa\u54cd\u5e94<\/span><br \/>\n            response <span class=\"token operator\">&#061;<\/span> <span class=\"token string-interpolation\"><span class=\"token string\">f&#034;Server response to: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>request<span class=\"token punctuation\">.<\/span>decode<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">:<\/span><span class=\"token format-spec\">30]<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#8230;\\\\n&#034;<\/span><\/span><span class=\"token punctuation\">.<\/span>encode<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>            <span class=\"token comment\"># \u53d1\u9001\u54cd\u5e94<\/span><br \/>\n            client_socket<span class=\"token punctuation\">.<\/span>sendall<span class=\"token punctuation\">(<\/span>response<span class=\"token punctuation\">)<\/span><br \/>\n            logger<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;&#x1f4e4; \u5411 <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>addr<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\"> \u53d1\u9001\u54cd\u5e94&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>        <span class=\"token keyword\">except<\/span> OSError <span class=\"token keyword\">as<\/span> e<span class=\"token punctuation\">:<\/span><br \/>\n            logger<span class=\"token punctuation\">.<\/span>error<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u53d1\u9001\u6570\u636e\u5230 <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>addr<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\"> \u5931\u8d25: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>e<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n            self<span class=\"token punctuation\">.<\/span>_close_client<span class=\"token punctuation\">(<\/span>client_id<span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token keyword\">def<\/span> <span class=\"token function\">_initiate_close<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">,<\/span> client_id<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">int<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u670d\u52a1\u5668\u53d1\u8d77\u5173\u95ed\u8fde\u63a5&#xff08;\u56db\u6b21\u6325\u624b&#xff09;&#034;&#034;&#034;<\/span><br \/>\n        client_data <span class=\"token operator\">&#061;<\/span> self<span class=\"token punctuation\">.<\/span>connections<span class=\"token punctuation\">.<\/span>get<span class=\"token punctuation\">(<\/span>client_id<span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token keyword\">not<\/span> client_data<span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">return<\/span><\/p>\n<p>        client_socket <span class=\"token operator\">&#061;<\/span> client_data<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;socket&#039;<\/span><span class=\"token punctuation\">]<\/span><br \/>\n        addr <span class=\"token operator\">&#061;<\/span> client_data<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;addr&#039;<\/span><span class=\"token punctuation\">]<\/span><\/p>\n<p>        <span class=\"token keyword\">if<\/span> client_data<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;state&#039;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token string\">&#039;ESTABLISHED&#039;<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">try<\/span><span class=\"token punctuation\">:<\/span><br \/>\n                logger<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;&#x1f7e1; \u670d\u52a1\u5668\u72b6\u6001: CLOSE_WAIT&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n                logger<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u2b07\ufe0f \u670d\u52a1\u5668\u53d1\u9001FIN\u7ed9 <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>addr<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>                <span class=\"token comment\"># \u53d1\u9001 FIN (\u7b2c\u4e00\u6b21\u6325\u624b)<\/span><br \/>\n                client_socket<span class=\"token punctuation\">.<\/span>shutdown<span class=\"token punctuation\">(<\/span>socket<span class=\"token punctuation\">.<\/span>SHUT_WR<span class=\"token punctuation\">)<\/span><\/p>\n<p>                <span class=\"token comment\"># \u66f4\u65b0\u72b6\u6001<\/span><br \/>\n                client_data<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;state&#039;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#039;LAST_ACK&#039;<\/span><br \/>\n                logger<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;&#x1f6d1; \u670d\u52a1\u5668\u72b6\u6001: LAST_ACK&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>                <span class=\"token comment\"># \u4fee\u6539\u9009\u62e9\u5668\u6ce8\u518c\u4ee5\u7b49\u5f85ACK<\/span><br \/>\n                self<span class=\"token punctuation\">.<\/span>selector<span class=\"token punctuation\">.<\/span>modify<span class=\"token punctuation\">(<\/span><br \/>\n                    client_socket<span class=\"token punctuation\">,<\/span><br \/>\n                    selectors<span class=\"token punctuation\">.<\/span>EVENT_READ<span class=\"token punctuation\">,<\/span><br \/>\n                    data<span class=\"token operator\">&#061;<\/span><span class=\"token punctuation\">{<\/span><span class=\"token string\">&#039;client_id&#039;<\/span><span class=\"token punctuation\">:<\/span> client_id<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#039;action&#039;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#039;close&#039;<\/span><span class=\"token punctuation\">}<\/span><br \/>\n                <span class=\"token punctuation\">)<\/span><\/p>\n<p>            <span class=\"token keyword\">except<\/span> OSError <span class=\"token keyword\">as<\/span> e<span class=\"token punctuation\">:<\/span><br \/>\n                logger<span class=\"token punctuation\">.<\/span>error<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u5173\u95ed\u8fde\u63a5\u65f6\u51fa\u9519: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>e<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n                self<span class=\"token punctuation\">.<\/span>_close_client<span class=\"token punctuation\">(<\/span>client_id<span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token keyword\">def<\/span> <span class=\"token function\">_close_client<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">,<\/span> client_id<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">int<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u5173\u95ed\u5ba2\u6237\u7aef\u8fde\u63a5\u5e76\u6e05\u7406\u8d44\u6e90&#034;&#034;&#034;<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> client_id <span class=\"token keyword\">not<\/span> <span class=\"token keyword\">in<\/span> self<span class=\"token punctuation\">.<\/span>connections<span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">return<\/span><\/p>\n<p>        client_data <span class=\"token operator\">&#061;<\/span> self<span class=\"token punctuation\">.<\/span>connections<span class=\"token punctuation\">.<\/span>pop<span class=\"token punctuation\">(<\/span>client_id<span class=\"token punctuation\">)<\/span><br \/>\n        client_socket <span class=\"token operator\">&#061;<\/span> client_data<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;socket&#039;<\/span><span class=\"token punctuation\">]<\/span><br \/>\n        addr <span class=\"token operator\">&#061;<\/span> client_data<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;addr&#039;<\/span><span class=\"token punctuation\">]<\/span><\/p>\n<p>        <span class=\"token keyword\">try<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token comment\"># \u4ece\u9009\u62e9\u5668\u6ce8\u9500<\/span><br \/>\n            self<span class=\"token punctuation\">.<\/span>selector<span class=\"token punctuation\">.<\/span>unregister<span class=\"token punctuation\">(<\/span>client_socket<span class=\"token punctuation\">)<\/span><\/p>\n<p>            <span class=\"token comment\"># \u5173\u95ed\u5957\u63a5\u5b57<\/span><br \/>\n            client_socket<span class=\"token punctuation\">.<\/span>close<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            logger<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;&#x1f512; \u5df2\u5173\u95ed\u4e0e <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>addr<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\"> \u7684\u8fde\u63a5&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">except<\/span> Exception <span class=\"token keyword\">as<\/span> e<span class=\"token punctuation\">:<\/span><br \/>\n            logger<span class=\"token punctuation\">.<\/span>error<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u5173\u95ed\u5ba2\u6237\u7aef\u8fde\u63a5\u65f6\u51fa\u9519: {e}&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token keyword\">def<\/span> <span class=\"token function\">_cleanup<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u6e05\u7406\u6240\u6709\u8d44\u6e90&#034;&#034;&#034;<\/span><br \/>\n        logger<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;&#x1f9f9; \u6e05\u7406\u670d\u52a1\u5668\u8d44\u6e90&#8230;&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>        <span class=\"token comment\"># \u5173\u95ed\u6240\u6709\u5ba2\u6237\u7aef\u8fde\u63a5<\/span><br \/>\n        <span class=\"token keyword\">for<\/span> client_id <span class=\"token keyword\">in<\/span> <span class=\"token builtin\">list<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">.<\/span>connections<span class=\"token punctuation\">.<\/span>keys<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            self<span class=\"token punctuation\">.<\/span>_close_client<span class=\"token punctuation\">(<\/span>client_id<span class=\"token punctuation\">)<\/span><\/p>\n<p>        <span class=\"token comment\"># \u5173\u95ed\u670d\u52a1\u5668\u5957\u63a5\u5b57<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> self<span class=\"token punctuation\">.<\/span>server_socket<span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">try<\/span><span class=\"token punctuation\">:<\/span><br \/>\n                self<span class=\"token punctuation\">.<\/span>selector<span class=\"token punctuation\">.<\/span>unregister<span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">.<\/span>server_socket<span class=\"token punctuation\">)<\/span><br \/>\n                self<span class=\"token punctuation\">.<\/span>server_socket<span class=\"token punctuation\">.<\/span>close<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n                logger<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;&#x1f512; \u670d\u52a1\u5668\u5957\u63a5\u5b57\u5df2\u5173\u95ed&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token keyword\">except<\/span><span class=\"token punctuation\">:<\/span><br \/>\n                <span class=\"token keyword\">pass<\/span><\/p>\n<p>        <span class=\"token comment\"># \u5173\u95ed\u9009\u62e9\u5668<\/span><br \/>\n        self<span class=\"token punctuation\">.<\/span>selector<span class=\"token punctuation\">.<\/span>close<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token keyword\">def<\/span> <span class=\"token function\">stop<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u505c\u6b62\u670d\u52a1\u5668&#034;&#034;&#034;<\/span><br \/>\n        self<span class=\"token punctuation\">.<\/span>running <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">False<\/span><br \/>\n        logger<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;&#x1f6d1; \u6b63\u5728\u505c\u6b62\u670d\u52a1\u5668&#8230;&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token keyword\">def<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u670d\u52a1\u5668\u4e3b\u51fd\u6570&#034;&#034;&#034;<\/span><br \/>\n    parser <span class=\"token operator\">&#061;<\/span> argparse<span class=\"token punctuation\">.<\/span>ArgumentParser<span class=\"token punctuation\">(<\/span>description<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#039;TCP\u670d\u52a1\u5668 &#8211; \u7ed1\u5b9a\u5230192.168.80.254&#039;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    parser<span class=\"token punctuation\">.<\/span>add_argument<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;&#8211;host&#039;<\/span><span class=\"token punctuation\">,<\/span> default<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#039;192.168.80.254&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token builtin\">help<\/span><span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#039;\u670d\u52a1\u5668\u7ed1\u5b9a\u5730\u5740&#039;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    parser<span class=\"token punctuation\">.<\/span>add_argument<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;&#8211;port&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token builtin\">type<\/span><span class=\"token operator\">&#061;<\/span><span class=\"token builtin\">int<\/span><span class=\"token punctuation\">,<\/span> default<span class=\"token operator\">&#061;<\/span><span class=\"token number\">12345<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token builtin\">help<\/span><span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#039;\u670d\u52a1\u5668\u76d1\u542c\u7aef\u53e3&#039;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    parser<span class=\"token punctuation\">.<\/span>add_argument<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;&#8211;connections&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token builtin\">type<\/span><span class=\"token operator\">&#061;<\/span><span class=\"token builtin\">int<\/span><span class=\"token punctuation\">,<\/span> default<span class=\"token operator\">&#061;<\/span><span class=\"token number\">10<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token builtin\">help<\/span><span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#039;\u6700\u5927\u8fde\u63a5\u6570&#039;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    args <span class=\"token operator\">&#061;<\/span> parser<span class=\"token punctuation\">.<\/span>parse_args<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>    logger<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;&#x1f527; \u670d\u52a1\u5668\u914d\u7f6e: host&#061;<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>args<span class=\"token punctuation\">.<\/span>host<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">, port&#061;<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>args<span class=\"token punctuation\">.<\/span>port<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">, max_connections&#061;<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>args<span class=\"token punctuation\">.<\/span>connections<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token keyword\">try<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        server <span class=\"token operator\">&#061;<\/span> TCPServer<span class=\"token punctuation\">(<\/span>args<span class=\"token punctuation\">.<\/span>host<span class=\"token punctuation\">,<\/span> args<span class=\"token punctuation\">.<\/span>port<span class=\"token punctuation\">,<\/span> args<span class=\"token punctuation\">.<\/span>connections<span class=\"token punctuation\">)<\/span><br \/>\n        logger<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u2705 \u670d\u52a1\u5668\u521d\u59cb\u5316\u5b8c\u6210&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>        <span class=\"token comment\"># \u542f\u52a8\u670d\u52a1\u5668<\/span><br \/>\n        server_thread <span class=\"token operator\">&#061;<\/span> threading<span class=\"token punctuation\">.<\/span>Thread<span class=\"token punctuation\">(<\/span><br \/>\n            target<span class=\"token operator\">&#061;<\/span>server<span class=\"token punctuation\">.<\/span>start<span class=\"token punctuation\">,<\/span><br \/>\n            name<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;TCPServerMain&#034;<\/span><br \/>\n        <span class=\"token punctuation\">)<\/span><br \/>\n        server_thread<span class=\"token punctuation\">.<\/span>daemon <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">True<\/span><br \/>\n        server_thread<span class=\"token punctuation\">.<\/span>start<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>        logger<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;&#x1f6a6; \u670d\u52a1\u5668\u5df2\u5728\u540e\u53f0\u8fd0\u884c&#xff0c;\u6309Ctrl&#043;C\u505c\u6b62&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>        <span class=\"token comment\"># \u4fdd\u6301\u4e3b\u7ebf\u7a0b\u8fd0\u884c<\/span><br \/>\n        server_thread<span class=\"token punctuation\">.<\/span>join<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token keyword\">except<\/span> KeyboardInterrupt<span class=\"token punctuation\">:<\/span><br \/>\n        logger<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\\\\n&#x1f6d1; \u7528\u6237\u7ec8\u6b62&#xff0c;\u6b63\u5728\u505c\u6b62\u670d\u52a1\u5668&#8230;&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        server<span class=\"token punctuation\">.<\/span>stop<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">except<\/span> Exception <span class=\"token keyword\">as<\/span> e<span class=\"token punctuation\">:<\/span><br \/>\n        logger<span class=\"token punctuation\">.<\/span>exception<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u670d\u52a1\u5668\u542f\u52a8\u5931\u8d25: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>e<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token keyword\">if<\/span> __name__ <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token string\">&#034;__main__&#034;<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    main<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<h3>\u5ba2\u6237\u7aef\u4ee3\u7801 (tcp_client.py)<\/h3>\n<p><span class=\"token keyword\">import<\/span> socket<br \/>\n<span class=\"token keyword\">import<\/span> time<br \/>\n<span class=\"token keyword\">import<\/span> logging<br \/>\n<span class=\"token keyword\">import<\/span> argparse<\/p>\n<p><span class=\"token comment\"># \u914d\u7f6e\u65e5\u5fd7<\/span><br \/>\nlogging<span class=\"token punctuation\">.<\/span>basicConfig<span class=\"token punctuation\">(<\/span><br \/>\n    level<span class=\"token operator\">&#061;<\/span>logging<span class=\"token punctuation\">.<\/span>INFO<span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token builtin\">format<\/span><span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#039;%(asctime)s %(levelname)-8s: %(message)s&#039;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    datefmt<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#039;%H:%M:%S&#039;<\/span><br \/>\n<span class=\"token punctuation\">)<\/span><br \/>\nlogger <span class=\"token operator\">&#061;<\/span> logging<span class=\"token punctuation\">.<\/span>getLogger<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;tcp_client&#039;<\/span><span class=\"token punctuation\">)<\/span><br \/>\nlogger<span class=\"token punctuation\">.<\/span>setLevel<span class=\"token punctuation\">(<\/span>logging<span class=\"token punctuation\">.<\/span>DEBUG<span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">TCPClient<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u8fde\u63a5\u5230192.168.80.254\u7684TCP\u5ba2\u6237\u7aef&#034;&#034;&#034;<\/span><br \/>\n    <span class=\"token keyword\">def<\/span> <span class=\"token function\">__init__<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">,<\/span> host<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">str<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#039;192.168.80.254&#039;<\/span><span class=\"token punctuation\">,<\/span> port<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">int<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">12345<\/span><span class=\"token punctuation\">,<\/span> timeout<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">int<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">5<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        self<span class=\"token punctuation\">.<\/span>host <span class=\"token operator\">&#061;<\/span> host<br \/>\n        self<span class=\"token punctuation\">.<\/span>port <span class=\"token operator\">&#061;<\/span> port<br \/>\n        self<span class=\"token punctuation\">.<\/span>timeout <span class=\"token operator\">&#061;<\/span> timeout<br \/>\n        self<span class=\"token punctuation\">.<\/span>client_socket <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">None<\/span><br \/>\n        self<span class=\"token punctuation\">.<\/span>state <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#039;CLOSED&#039;<\/span><\/p>\n<p>    <span class=\"token keyword\">def<\/span> <span class=\"token function\">connect<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u5efa\u7acb\u8fde\u63a5&#xff08;\u4e09\u6b21\u63e1\u624b&#xff09;&#034;&#034;&#034;<\/span><br \/>\n        <span class=\"token keyword\">try<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token comment\"># \u663e\u793a\u8fde\u63a5\u4fe1\u606f<\/span><br \/>\n            logger<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;&#x1f517; \u8fde\u63a5\u5230\u670d\u52a1\u5668 <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>self<span class=\"token punctuation\">.<\/span>host<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">:<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>self<span class=\"token punctuation\">.<\/span>port<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>            <span class=\"token comment\"># \u521b\u5efa\u5957\u63a5\u5b57<\/span><br \/>\n            self<span class=\"token punctuation\">.<\/span>client_socket <span class=\"token operator\">&#061;<\/span> socket<span class=\"token punctuation\">.<\/span>socket<span class=\"token punctuation\">(<\/span>socket<span class=\"token punctuation\">.<\/span>AF_INET<span class=\"token punctuation\">,<\/span> socket<span class=\"token punctuation\">.<\/span>SOCK_STREAM<span class=\"token punctuation\">)<\/span><br \/>\n            self<span class=\"token punctuation\">.<\/span>client_socket<span class=\"token punctuation\">.<\/span>setsockopt<span class=\"token punctuation\">(<\/span>socket<span class=\"token punctuation\">.<\/span>IPPROTO_TCP<span class=\"token punctuation\">,<\/span> socket<span class=\"token punctuation\">.<\/span>TCP_NODELAY<span class=\"token punctuation\">,<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span>  <span class=\"token comment\"># \u7981\u7528Nagle\u7b97\u6cd5<\/span><br \/>\n            self<span class=\"token punctuation\">.<\/span>client_socket<span class=\"token punctuation\">.<\/span>settimeout<span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">.<\/span>timeout<span class=\"token punctuation\">)<\/span><\/p>\n<p>            logger<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;&#x1f195; \u5ba2\u6237\u7aef\u521b\u5efa\u5957\u63a5\u5b57&#xff0c;\u72b6\u6001: CLOSED&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>            <span class=\"token comment\"># \u7b2c\u4e00\u6b21\u63e1\u624b (SYN)<\/span><br \/>\n            logger<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;&#x1f6a6; \u5ba2\u6237\u7aef\u53d1\u9001SYN\u7ed9\u670d\u52a1\u5668 <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>self<span class=\"token punctuation\">.<\/span>host<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">:<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>self<span class=\"token punctuation\">.<\/span>port<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#xff0c;\u72b6\u6001: SYN_SENT&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>            <span class=\"token comment\"># \u8fde\u63a5\u5230\u670d\u52a1\u5668<\/span><br \/>\n            self<span class=\"token punctuation\">.<\/span>client_socket<span class=\"token punctuation\">.<\/span>connect<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">.<\/span>host<span class=\"token punctuation\">,<\/span> self<span class=\"token punctuation\">.<\/span>port<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>            <span class=\"token comment\"># \u66f4\u65b0\u72b6\u6001<\/span><br \/>\n            self<span class=\"token punctuation\">.<\/span>state <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#039;ESTABLISHED&#039;<\/span><br \/>\n            logger<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u2705 \u5b8c\u6210\u4e09\u6b21\u63e1\u624b&#xff0c;\u72b6\u6001: ESTABLISHED&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>            <span class=\"token keyword\">return<\/span> <span class=\"token boolean\">True<\/span><br \/>\n        <span class=\"token keyword\">except<\/span> socket<span class=\"token punctuation\">.<\/span>timeout<span class=\"token punctuation\">:<\/span><br \/>\n            logger<span class=\"token punctuation\">.<\/span>error<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u231b \u8fde\u63a5\u8d85\u65f6&#xff0c;\u670d\u52a1\u5668\u672a\u54cd\u5e94&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token keyword\">return<\/span> <span class=\"token boolean\">False<\/span><br \/>\n        <span class=\"token keyword\">except<\/span> ConnectionRefusedError<span class=\"token punctuation\">:<\/span><br \/>\n            logger<span class=\"token punctuation\">.<\/span>error<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u274c \u8fde\u63a5\u88ab\u62d2\u7edd&#xff0c;\u670d\u52a1\u5668\u53ef\u80fd\u672a\u8fd0\u884c&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token keyword\">return<\/span> <span class=\"token boolean\">False<\/span><br \/>\n        <span class=\"token keyword\">except<\/span> Exception <span class=\"token keyword\">as<\/span> e<span class=\"token punctuation\">:<\/span><br \/>\n            logger<span class=\"token punctuation\">.<\/span>error<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u8fde\u63a5\u5931\u8d25: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>e<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n            self<span class=\"token punctuation\">.<\/span>close<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token keyword\">return<\/span> <span class=\"token boolean\">False<\/span><\/p>\n<p>    <span class=\"token keyword\">def<\/span> <span class=\"token function\">send_data<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">,<\/span> data<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">bytes<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token builtin\">bool<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u53d1\u9001\u6570\u636e\u5230\u670d\u52a1\u5668&#034;&#034;&#034;<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token keyword\">not<\/span> self<span class=\"token punctuation\">.<\/span>client_socket <span class=\"token keyword\">or<\/span> self<span class=\"token punctuation\">.<\/span>state <span class=\"token operator\">!&#061;<\/span> <span class=\"token string\">&#039;ESTABLISHED&#039;<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            logger<span class=\"token punctuation\">.<\/span>warning<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u26a0\ufe0f \u65e0\u6cd5\u53d1\u9001\u6570\u636e: \u8fde\u63a5\u672a\u5efa\u7acb\u6216\u5df2\u5173\u95ed&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token keyword\">return<\/span> <span class=\"token boolean\">False<\/span><\/p>\n<p>        <span class=\"token keyword\">try<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token comment\"># \u53d1\u9001\u6570\u636e<\/span><br \/>\n            self<span class=\"token punctuation\">.<\/span>client_socket<span class=\"token punctuation\">.<\/span>sendall<span class=\"token punctuation\">(<\/span>data<span class=\"token punctuation\">)<\/span><br \/>\n            logger<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;&#x1f4e4; \u5ba2\u6237\u7aef\u53d1\u9001\u6570\u636e: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>data<span class=\"token punctuation\">.<\/span>decode<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">:<\/span><span class=\"token format-spec\">30]<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span><span class=\"token string\">&#039;&#8230;&#039;<\/span> <span class=\"token keyword\">if<\/span> <span class=\"token builtin\">len<\/span><span class=\"token punctuation\">(<\/span>data<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&gt;<\/span> <span class=\"token number\">30<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token string\">&#039;&#039;<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token keyword\">return<\/span> <span class=\"token boolean\">True<\/span><br \/>\n        <span class=\"token keyword\">except<\/span> Exception <span class=\"token keyword\">as<\/span> e<span class=\"token punctuation\">:<\/span><br \/>\n            logger<span class=\"token punctuation\">.<\/span>error<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u53d1\u9001\u6570\u636e\u5931\u8d25: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>e<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token keyword\">return<\/span> <span class=\"token boolean\">False<\/span><\/p>\n<p>    <span class=\"token keyword\">def<\/span> <span class=\"token function\">receive_data<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">,<\/span> buffer_size<span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">int<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">1024<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> Optional<span class=\"token punctuation\">[<\/span><span class=\"token builtin\">bytes<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u63a5\u6536\u670d\u52a1\u5668\u54cd\u5e94&#034;&#034;&#034;<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token keyword\">not<\/span> self<span class=\"token punctuation\">.<\/span>client_socket <span class=\"token keyword\">or<\/span> self<span class=\"token punctuation\">.<\/span>state <span class=\"token operator\">!&#061;<\/span> <span class=\"token string\">&#039;ESTABLISHED&#039;<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            logger<span class=\"token punctuation\">.<\/span>warning<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u26a0\ufe0f \u65e0\u6cd5\u63a5\u6536\u6570\u636e: \u8fde\u63a5\u672a\u5efa\u7acb\u6216\u5df2\u5173\u95ed&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token keyword\">return<\/span> <span class=\"token boolean\">None<\/span><\/p>\n<p>        <span class=\"token keyword\">try<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token comment\"># \u63a5\u6536\u6570\u636e<\/span><br \/>\n            data <span class=\"token operator\">&#061;<\/span> self<span class=\"token punctuation\">.<\/span>client_socket<span class=\"token punctuation\">.<\/span>recv<span class=\"token punctuation\">(<\/span>buffer_size<span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token keyword\">if<\/span> data<span class=\"token punctuation\">:<\/span><br \/>\n                logger<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;&#x1f4e5; \u5ba2\u6237\u7aef\u6536\u5230\u54cd\u5e94: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>data<span class=\"token punctuation\">.<\/span>decode<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">:<\/span><span class=\"token format-spec\">50]<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span><span class=\"token string\">&#039;&#8230;&#039;<\/span> <span class=\"token keyword\">if<\/span> <span class=\"token builtin\">len<\/span><span class=\"token punctuation\">(<\/span>data<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&gt;<\/span> <span class=\"token number\">50<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token string\">&#039;&#039;<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token keyword\">return<\/span> data<br \/>\n        <span class=\"token keyword\">except<\/span> socket<span class=\"token punctuation\">.<\/span>timeout<span class=\"token punctuation\">:<\/span><br \/>\n            logger<span class=\"token punctuation\">.<\/span>warning<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u231b \u63a5\u6536\u6570\u636e\u8d85\u65f6&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token keyword\">return<\/span> <span class=\"token boolean\">None<\/span><br \/>\n        <span class=\"token keyword\">except<\/span> ConnectionResetError<span class=\"token punctuation\">:<\/span><br \/>\n            logger<span class=\"token punctuation\">.<\/span>error<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u274c \u8fde\u63a5\u88ab\u670d\u52a1\u5668\u91cd\u7f6e&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            self<span class=\"token punctuation\">.<\/span>close<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token keyword\">return<\/span> <span class=\"token boolean\">None<\/span><br \/>\n        <span class=\"token keyword\">except<\/span> Exception <span class=\"token keyword\">as<\/span> e<span class=\"token punctuation\">:<\/span><br \/>\n            logger<span class=\"token punctuation\">.<\/span>error<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u63a5\u6536\u6570\u636e\u5931\u8d25: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>e<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token keyword\">return<\/span> <span class=\"token boolean\">None<\/span><\/p>\n<p>    <span class=\"token keyword\">def<\/span> <span class=\"token function\">close<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token builtin\">bool<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u5173\u95ed\u8fde\u63a5&#xff08;\u56db\u6b21\u6325\u624b&#xff09;&#034;&#034;&#034;<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token keyword\">not<\/span> self<span class=\"token punctuation\">.<\/span>client_socket <span class=\"token keyword\">or<\/span> self<span class=\"token punctuation\">.<\/span>state <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token string\">&#039;CLOSED&#039;<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">return<\/span> <span class=\"token boolean\">True<\/span><\/p>\n<p>        <span class=\"token keyword\">try<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">if<\/span> self<span class=\"token punctuation\">.<\/span>state <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token string\">&#039;ESTABLISHED&#039;<\/span><span class=\"token punctuation\">:<\/span><br \/>\n                <span class=\"token comment\"># \u7b2c\u4e00\u6b21\u6325\u624b (FIN)<\/span><br \/>\n                logger<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u23f9\ufe0f \u5ba2\u6237\u7aef\u53d1\u9001FIN\u7ed9\u670d\u52a1\u5668&#xff0c;\u72b6\u6001: FIN_WAIT_1&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n                self<span class=\"token punctuation\">.<\/span>client_socket<span class=\"token punctuation\">.<\/span>shutdown<span class=\"token punctuation\">(<\/span>socket<span class=\"token punctuation\">.<\/span>SHUT_WR<span class=\"token punctuation\">)<\/span><br \/>\n                self<span class=\"token punctuation\">.<\/span>state <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#039;FIN_WAIT_1&#039;<\/span><\/p>\n<p>                <span class=\"token comment\"># \u63a5\u6536ACK (\u7b2c\u4e8c\u6b21\u6325\u624b)<\/span><br \/>\n                ack <span class=\"token operator\">&#061;<\/span> self<span class=\"token punctuation\">.<\/span>client_socket<span class=\"token punctuation\">.<\/span>recv<span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><br \/>\n                <span class=\"token keyword\">if<\/span> ack<span class=\"token punctuation\">:<\/span><br \/>\n                    logger<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;&#x1f7e2; \u6536\u5230\u670d\u52a1\u5668ACK&#xff0c;\u72b6\u6001: FIN_WAIT_2&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n                    self<span class=\"token punctuation\">.<\/span>state <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#039;FIN_WAIT_2&#039;<\/span><\/p>\n<p>                <span class=\"token comment\"># \u63a5\u6536FIN (\u7b2c\u4e09\u6b21\u6325\u624b)<\/span><br \/>\n                fin <span class=\"token operator\">&#061;<\/span> self<span class=\"token punctuation\">.<\/span>client_socket<span class=\"token punctuation\">.<\/span>recv<span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><br \/>\n                <span class=\"token keyword\">if<\/span> fin<span class=\"token punctuation\">:<\/span><br \/>\n                    logger<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;&#x1f7e1; \u6536\u5230\u670d\u52a1\u5668FIN&#xff0c;\u72b6\u6001: TIME_WAIT&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n                    self<span class=\"token punctuation\">.<\/span>state <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#039;TIME_WAIT&#039;<\/span><\/p>\n<p>                <span class=\"token comment\"># \u7b2c\u56db\u6b21\u6325\u624b (ACK)<\/span><br \/>\n                logger<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u2b07\ufe0f \u5ba2\u6237\u7aef\u53d1\u9001ACK\u7ed9\u670d\u52a1\u5668&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n                self<span class=\"token punctuation\">.<\/span>client_socket<span class=\"token punctuation\">.<\/span>send<span class=\"token punctuation\">(<\/span><span class=\"token string\">b&#039;A&#039;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>            <span class=\"token comment\"># \u7b49\u5f852MSL (\u6a21\u62dfTIME_WAIT\u72b6\u6001)<\/span><br \/>\n            logger<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u23f3 \u5ba2\u6237\u7aef\u8fdb\u5165TIME_WAIT\u72b6\u6001 (\u7b49\u5f852\u79d2)&#8230;&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n            time<span class=\"token punctuation\">.<\/span>sleep<span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>            logger<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;&#x1f51a; \u5ba2\u6237\u7aef\u8fde\u63a5\u5173\u95ed&#xff0c;\u72b6\u6001: CLOSED&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n            self<span class=\"token punctuation\">.<\/span>state <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#039;CLOSED&#039;<\/span><br \/>\n            <span class=\"token keyword\">return<\/span> <span class=\"token boolean\">True<\/span><\/p>\n<p>        <span class=\"token keyword\">except<\/span> Exception <span class=\"token keyword\">as<\/span> e<span class=\"token punctuation\">:<\/span><br \/>\n            logger<span class=\"token punctuation\">.<\/span>error<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u5173\u95ed\u8fde\u63a5\u65f6\u51fa\u9519: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>e<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token keyword\">return<\/span> <span class=\"token boolean\">False<\/span><br \/>\n        <span class=\"token keyword\">finally<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">try<\/span><span class=\"token punctuation\">:<\/span><br \/>\n                <span class=\"token keyword\">if<\/span> self<span class=\"token punctuation\">.<\/span>client_socket<span class=\"token punctuation\">:<\/span><br \/>\n                    self<span class=\"token punctuation\">.<\/span>client_socket<span class=\"token punctuation\">.<\/span>close<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token keyword\">except<\/span><span class=\"token punctuation\">:<\/span><br \/>\n                <span class=\"token keyword\">pass<\/span><br \/>\n            self<span class=\"token punctuation\">.<\/span>client_socket <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">None<\/span><\/p>\n<p><span class=\"token keyword\">def<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u5ba2\u6237\u7aef\u4e3b\u51fd\u6570&#034;&#034;&#034;<\/span><br \/>\n    parser <span class=\"token operator\">&#061;<\/span> argparse<span class=\"token punctuation\">.<\/span>ArgumentParser<span class=\"token punctuation\">(<\/span>description<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#039;TCP\u5ba2\u6237\u7aef &#8211; \u8fde\u63a5\u5230192.168.80.254&#039;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    parser<span class=\"token punctuation\">.<\/span>add_argument<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;&#8211;host&#039;<\/span><span class=\"token punctuation\">,<\/span> default<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#039;192.168.80.254&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token builtin\">help<\/span><span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#039;\u670d\u52a1\u5668\u5730\u5740&#039;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    parser<span class=\"token punctuation\">.<\/span>add_argument<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;&#8211;port&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token builtin\">type<\/span><span class=\"token operator\">&#061;<\/span><span class=\"token builtin\">int<\/span><span class=\"token punctuation\">,<\/span> default<span class=\"token operator\">&#061;<\/span><span class=\"token number\">12345<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token builtin\">help<\/span><span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#039;\u670d\u52a1\u5668\u7aef\u53e3&#039;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    parser<span class=\"token punctuation\">.<\/span>add_argument<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;&#8211;message&#039;<\/span><span class=\"token punctuation\">,<\/span> default<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#039;Hello from TCP Client!&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token builtin\">help<\/span><span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#039;\u8981\u53d1\u9001\u7684\u6d88\u606f&#039;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    args <span class=\"token operator\">&#061;<\/span> parser<span class=\"token punctuation\">.<\/span>parse_args<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>    logger<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;&#x1f527; \u5ba2\u6237\u7aef\u914d\u7f6e: host&#061;<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>args<span class=\"token punctuation\">.<\/span>host<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">, port&#061;<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>args<span class=\"token punctuation\">.<\/span>port<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">, message&#061;<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>args<span class=\"token punctuation\">.<\/span>message<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token keyword\">try<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token comment\"># \u521b\u5efa\u5ba2\u6237\u7aef<\/span><br \/>\n        client <span class=\"token operator\">&#061;<\/span> TCPClient<span class=\"token punctuation\">(<\/span>args<span class=\"token punctuation\">.<\/span>host<span class=\"token punctuation\">,<\/span> args<span class=\"token punctuation\">.<\/span>port<span class=\"token punctuation\">)<\/span><\/p>\n<p>        <span class=\"token comment\"># \u8fde\u63a5\u670d\u52a1\u5668<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token keyword\">not<\/span> client<span class=\"token punctuation\">.<\/span>connect<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            logger<span class=\"token punctuation\">.<\/span>error<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u274c \u65e0\u6cd5\u8fde\u63a5\u5230\u670d\u52a1\u5668&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token keyword\">return<\/span><\/p>\n<p>        <span class=\"token comment\"># \u53d1\u9001\u6570\u636e<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token keyword\">not<\/span> client<span class=\"token punctuation\">.<\/span>send_data<span class=\"token punctuation\">(<\/span>args<span class=\"token punctuation\">.<\/span>message<span class=\"token punctuation\">.<\/span>encode<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">or<\/span> args<span class=\"token punctuation\">.<\/span>message <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token string\">&#039;exit&#039;<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            logger<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u2139\ufe0f \u6ca1\u6709\u53d1\u9001\u6570\u636e\u6216\u8bf7\u6c42\u9000\u51fa&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">else<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token comment\"># \u63a5\u6536\u54cd\u5e94<\/span><br \/>\n            response <span class=\"token operator\">&#061;<\/span> client<span class=\"token punctuation\">.<\/span>receive_data<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token keyword\">if<\/span> response<span class=\"token punctuation\">:<\/span><br \/>\n                logger<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;&#x1f4a1; \u5b8c\u6574\u54cd\u5e94: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>response<span class=\"token punctuation\">.<\/span>decode<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>        <span class=\"token comment\"># \u5173\u95ed\u8fde\u63a5<\/span><br \/>\n        client<span class=\"token punctuation\">.<\/span>close<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        logger<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u2705 \u5ba2\u6237\u7aef\u64cd\u4f5c\u5b8c\u6210&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token keyword\">except<\/span> KeyboardInterrupt<span class=\"token punctuation\">:<\/span><br \/>\n        logger<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\\\\n&#x1f6d1; \u7528\u6237\u7ec8\u6b62\u64cd\u4f5c&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        client<span class=\"token punctuation\">.<\/span>close<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">except<\/span> Exception <span class=\"token keyword\">as<\/span> e<span class=\"token punctuation\">:<\/span><br \/>\n        logger<span class=\"token punctuation\">.<\/span>exception<span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u5ba2\u6237\u7aef\u64cd\u4f5c\u5931\u8d25: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>e<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token keyword\">if<\/span> __name__ <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token string\">&#034;__main__&#034;<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    main<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<h3>\u4f7f\u7528\u8bf4\u660e<\/h3>\n<h4>1. \u542f\u52a8\u670d\u52a1\u5668 (192.168.80.254)<\/h4>\n<p>python tcp_server.py <span class=\"token parameter variable\">&#8211;host<\/span> <span class=\"token number\">192.168<\/span>.80.254 <span class=\"token parameter variable\">&#8211;port<\/span> <span class=\"token number\">54321<\/span> <span class=\"token parameter variable\">&#8211;connections<\/span> <span class=\"token number\">20<\/span><\/p>\n<p>\u53c2\u6570\u8bf4\u660e:<\/p>\n<ul>\n<li>&#8211;host: \u670d\u52a1\u5668\u7ed1\u5b9a\u7684IP\u5730\u5740 (\u9ed8\u8ba4192.168.80.254)<\/li>\n<li>&#8211;port: \u670d\u52a1\u5668\u76d1\u542c\u7684\u7aef\u53e3 (\u9ed8\u8ba412345)<\/li>\n<li>&#8211;connections: \u6700\u5927\u5e76\u53d1\u8fde\u63a5\u6570 (\u9ed8\u8ba410)<\/li>\n<\/ul>\n<p>\u670d\u52a1\u5668\u65e5\u5fd7\u793a\u4f8b:<\/p>\n<p>15:30:22 &#x1f527; \u670d\u52a1\u5668\u914d\u7f6e: host&#061;192.168.80.254, port&#061;54321, max_connections&#061;20<br \/>\n15:30:22 \u2705 \u670d\u52a1\u5668\u521d\u59cb\u5316\u5b8c\u6210<br \/>\n15:30:22 &#x1f680; \u670d\u52a1\u5668\u542f\u52a8&#xff0c;\u76d1\u542c 192.168.80.254:54321&#xff0c;\u72b6\u6001: LISTEN<br \/>\n15:30:22 \u2699\ufe0f \u670d\u52a1\u5668\u914d\u7f6e: \u6700\u5927\u8fde\u63a5\u6570&#061;20<br \/>\n15:30:22 &#x1f6a6; \u670d\u52a1\u5668\u5df2\u5728\u540e\u53f0\u8fd0\u884c&#xff0c;\u6309Ctrl&#043;C\u505c\u6b62<br \/>\n15:30:45 &#x1f501; \u6536\u5230\u6765\u81ea (&#039;192.168.80.100&#039;, 54216) \u7684SYN&#xff0c;\u72b6\u6001: SYN_RCVD<br \/>\n15:30:45 &#x1f4e4; \u5411 (&#039;192.168.80.100&#039;, 54216) \u53d1\u9001SYN-ACK<br \/>\n15:30:45 \u23f3 \u7b49\u5f85\u6765\u81ea (&#039;192.168.80.100&#039;, 54216) \u7684ACK&#8230;<br \/>\n1530:45 \u2705 \u4e0e (&#039;192.168.80.100&#039;, 54216) \u5b8c\u6210\u4e09\u6b21\u63e1\u624b&#xff0c;\u72b6\u6001: ESTABLISHED<\/p>\n<h4>2. \u542f\u52a8\u5ba2\u6237\u7aef (\u8fde\u63a5\u5230192.168.80.254)<\/h4>\n<p>python tcp_client.py <span class=\"token parameter variable\">&#8211;host<\/span> <span class=\"token number\">192.168<\/span>.80.254 <span class=\"token parameter variable\">&#8211;port<\/span> <span class=\"token number\">54321<\/span> <span class=\"token parameter variable\">&#8211;message<\/span> <span class=\"token string\">&#034;Hello Server!&#034;<\/span><\/p>\n<p>\u53c2\u6570\u8bf4\u660e:<\/p>\n<ul>\n<li>&#8211;host: \u8981\u8fde\u63a5\u7684\u670d\u52a1\u5668IP (\u9ed8\u8ba4192.168.80.254)<\/li>\n<li>&#8211;port: \u670d\u52a1\u5668\u7aef\u53e3 (\u9ed8\u8ba412345)<\/li>\n<li>&#8211;message: \u8981\u53d1\u9001\u7684\u6d88\u606f\u6587\u672c<\/li>\n<\/ul>\n<p>\u5ba2\u6237\u7aef\u65e5\u5fd7\u793a\u4f8b:<\/p>\n<p>15:30:45 &#x1f517; \u8fde\u63a5\u5230\u670d\u52a1\u5668 192.168.80.254:54321<br \/>\n15:30:45 &#x1f195; \u5ba2\u6237\u7aef\u521b\u5efa\u5957\u63a5\u5b57&#xff0c;\u72b6\u6001: CLOSED<br \/>\n15:30:45 &#x1f6a6; \u5ba2\u6237\u7aef\u53d1\u9001SYN\u7ed9\u670d\u52a1\u5668 192.168.80.254:54321&#xff0c;\u72b6\u6001: SYN_SENT<br \/>\n15:30:45 \u2705 \u5b8c\u6210\u4e09\u6b21\u63e1\u624b&#xff0c;\u72b6\u6001: ESTABLISHED<br \/>\n15:30:45 &#x1f4e4; \u5ba2\u6237\u7aef\u53d1\u9001\u6570\u636e: Hello Server!<br \/>\n15:30:45 &#x1f4e5; \u5ba2\u6237\u7aef\u6536\u5230\u54cd\u5e94: Server response to: Hello Server!&#8230;<br \/>\n15:30:45 &#x1f4a1; \u5b8c\u6574\u54cd\u5e94: Server response to: Hello Server!&#8230;<br \/>\n15:30:45 \u23f9\ufe0f \u5ba2\u6237\u7aef\u53d1\u9001FIN\u7ed9\u670d\u52a1\u5668&#xff0c;\u72b6\u6001: FIN_WAIT_1<br \/>\n15:30:45 &#x1f7e2; \u6536\u5230\u670d\u52a1\u5668ACK&#xff0c;\u72b6\u6001: FIN_WAIT_2<br \/>\n15:30:45 &#x1f7e1; \u6536\u5230\u670d\u52a1\u5668FIN&#xff0c;\u72b6\u6001: TIME_WAIT<br \/>\n15:30:45 \u2b07\ufe0f \u5ba2\u6237\u7aef\u53d1\u9001ACK\u7ed9\u670d\u52a1\u5668<br \/>\n15:30:45 \u23f3 \u5ba2\u6237\u7aef\u8fdb\u5165TIME_WAIT\u72b6\u6001 (\u7b49\u5f852\u79d2)&#8230;<br \/>\n15:30:47 &#x1f51a; \u5ba2\u6237\u7aef\u8fde\u63a5\u5173\u95ed&#xff0c;\u72b6\u6001: CLOSED<br \/>\n15:30:47 \u2705 \u5ba2\u6237\u7aef\u64cd\u4f5c\u5b8c\u6210<\/p>\n<h3>\u5b9e\u73b0\u7279\u70b9<\/h3>\n<h4>1. \u670d\u52a1\u5668\u7aef\u7279\u70b9<\/h4>\n<ul>\n<li>\u6307\u5b9aIP\u7ed1\u5b9a&#xff1a;\u4e13\u95e8\u7ed1\u5b9a\u5230192.168.80.254\u5730\u5740<\/li>\n<li>\u9ad8\u6548I\/O\u6a21\u578b&#xff1a;\u4f7f\u7528selectors\u6a21\u5757\u5904\u7406\u591a\u8fde\u63a5<\/li>\n<li>\u5b8c\u6574\u72b6\u6001\u7ba1\u7406&#xff1a;\u5b9e\u73b0TCP\u4e09\u6b21\u63e1\u624b\u548c\u56db\u6b21\u6325\u624b\u72b6\u6001\u8f6c\u6362<\/li>\n<li>\u5065\u58ee\u7684\u9519\u8bef\u5904\u7406&#xff1a;\u5168\u9762\u5904\u7406\u5404\u79cd\u7f51\u7edc\u5f02\u5e38<\/li>\n<li>\u8bf7\u6c42\u5904\u7406&#xff1a;\u652f\u6301\u5904\u7406\u5ba2\u6237\u7aef\u6d88\u606f\u5e76\u8fd4\u56de\u54cd\u5e94<\/li>\n<\/ul>\n<h4>2. \u5ba2\u6237\u7aef\u7279\u70b9<\/h4>\n<ul>\n<li>\u6e05\u6670\u7684\u8fde\u63a5\u6d41\u7a0b&#xff1a;\u5b8c\u6574\u5c55\u793aTCP\u8fde\u63a5\u751f\u547d\u5468\u671f<\/li>\n<li>\u4ea4\u4e92\u5f0f\u63a7\u5236&#xff1a;\u652f\u6301\u547d\u4ee4\u884c\u53c2\u6570\u81ea\u5b9a\u4e49\u6d88\u606f<\/li>\n<li>\u8d85\u65f6\u5904\u7406&#xff1a;\u6240\u6709\u7f51\u7edc\u64cd\u4f5c\u90fd\u6709\u8d85\u65f6\u63a7\u5236<\/li>\n<li>\u8be6\u7ec6\u65e5\u5fd7&#xff1a;\u8bb0\u5f55\u6240\u6709\u5173\u952e\u72b6\u6001\u53d8\u5316<\/li>\n<\/ul>\n<h4>3. \u7f51\u7edc\u4ea4\u4e92\u6d41\u7a0b<\/h4>\n<p>  #mermaid-svg-NdeogteyNTn27QEU {font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;font-size:16px;fill:#333;}#mermaid-svg-NdeogteyNTn27QEU .error-icon{fill:#552222;}#mermaid-svg-NdeogteyNTn27QEU .error-text{fill:#552222;stroke:#552222;}#mermaid-svg-NdeogteyNTn27QEU .edge-thickness-normal{stroke-width:2px;}#mermaid-svg-NdeogteyNTn27QEU .edge-thickness-thick{stroke-width:3.5px;}#mermaid-svg-NdeogteyNTn27QEU .edge-pattern-solid{stroke-dasharray:0;}#mermaid-svg-NdeogteyNTn27QEU .edge-pattern-dashed{stroke-dasharray:3;}#mermaid-svg-NdeogteyNTn27QEU .edge-pattern-dotted{stroke-dasharray:2;}#mermaid-svg-NdeogteyNTn27QEU .marker{fill:#333333;stroke:#333333;}#mermaid-svg-NdeogteyNTn27QEU .marker.cross{stroke:#333333;}#mermaid-svg-NdeogteyNTn27QEU svg{font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;font-size:16px;}#mermaid-svg-NdeogteyNTn27QEU .actor{stroke:hsl(259.6261682243, 59.7765363128%, 87.9019607843%);fill:#ECECFF;}#mermaid-svg-NdeogteyNTn27QEU text.actor&gt;tspan{fill:black;stroke:none;}#mermaid-svg-NdeogteyNTn27QEU .actor-line{stroke:grey;}#mermaid-svg-NdeogteyNTn27QEU .messageLine0{stroke-width:1.5;stroke-dasharray:none;stroke:#333;}#mermaid-svg-NdeogteyNTn27QEU .messageLine1{stroke-width:1.5;stroke-dasharray:2,2;stroke:#333;}#mermaid-svg-NdeogteyNTn27QEU #arrowhead path{fill:#333;stroke:#333;}#mermaid-svg-NdeogteyNTn27QEU .sequenceNumber{fill:white;}#mermaid-svg-NdeogteyNTn27QEU #sequencenumber{fill:#333;}#mermaid-svg-NdeogteyNTn27QEU #crosshead path{fill:#333;stroke:#333;}#mermaid-svg-NdeogteyNTn27QEU .messageText{fill:#333;stroke:#333;}#mermaid-svg-NdeogteyNTn27QEU .labelBox{stroke:hsl(259.6261682243, 59.7765363128%, 87.9019607843%);fill:#ECECFF;}#mermaid-svg-NdeogteyNTn27QEU .labelText,#mermaid-svg-NdeogteyNTn27QEU .labelText&gt;tspan{fill:black;stroke:none;}#mermaid-svg-NdeogteyNTn27QEU .loopText,#mermaid-svg-NdeogteyNTn27QEU .loopText&gt;tspan{fill:black;stroke:none;}#mermaid-svg-NdeogteyNTn27QEU .loopLine{stroke-width:2px;stroke-dasharray:2,2;stroke:hsl(259.6261682243, 59.7765363128%, 87.9019607843%);fill:hsl(259.6261682243, 59.7765363128%, 87.9019607843%);}#mermaid-svg-NdeogteyNTn27QEU .note{stroke:#aaaa33;fill:#fff5ad;}#mermaid-svg-NdeogteyNTn27QEU .noteText,#mermaid-svg-NdeogteyNTn27QEU .noteText&gt;tspan{fill:black;stroke:none;}#mermaid-svg-NdeogteyNTn27QEU .activation0{fill:#f4f4f4;stroke:#666;}#mermaid-svg-NdeogteyNTn27QEU .activation1{fill:#f4f4f4;stroke:#666;}#mermaid-svg-NdeogteyNTn27QEU .activation2{fill:#f4f4f4;stroke:#666;}#mermaid-svg-NdeogteyNTn27QEU .actorPopupMenu{position:absolute;}#mermaid-svg-NdeogteyNTn27QEU .actorPopupMenuPanel{position:absolute;fill:#ECECFF;box-shadow:0px 8px 16px 0px rgba(0,0,0,0.2);filter:drop-shadow(3px 5px 2px rgb(0 0 0 \/ 0.4));}#mermaid-svg-NdeogteyNTn27QEU .actor-man line{stroke:hsl(259.6261682243, 59.7765363128%, 87.9019607843%);fill:#ECECFF;}#mermaid-svg-NdeogteyNTn27QEU .actor-man circle,#mermaid-svg-NdeogteyNTn27QEU line{stroke:hsl(259.6261682243, 59.7765363128%, 87.9019607843%);fill:#ECECFF;stroke-width:2px;}#mermaid-svg-NdeogteyNTn27QEU :root{&#8211;mermaid-font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;} <\/p>\n<p>       Client <\/p>\n<p>       Server(192.168.80.254) <\/p>\n<p>      \u4e09\u6b21\u63e1\u624b <\/p>\n<p>    SYN <\/p>\n<p>    SYN-ACK <\/p>\n<p>    ACK <\/p>\n<p>      \u6570\u636e\u4f20\u8f93 <\/p>\n<p>    \u6570\u636e\u8bf7\u6c42 <\/p>\n<p>    \u54cd\u5e94\u6570\u636e <\/p>\n<p>      \u56db\u6b21\u6325\u624b <\/p>\n<p>    FIN <\/p>\n<p>    ACK <\/p>\n<p>    FIN <\/p>\n<p>    ACK <\/p>\n<p>      Client <\/p>\n<p>      Server(192.168.80.254) <\/p>\n<h3>\u6d4b\u8bd5\u573a\u666f<\/h3>\n<h4>1. \u57fa\u672c\u901a\u4fe1\u6d4b\u8bd5<\/h4>\n<p><span class=\"token comment\"># \u670d\u52a1\u5668<\/span><br \/>\npython tcp_server.py<\/p>\n<p><span class=\"token comment\"># \u5ba2\u6237\u7aef1<\/span><br \/>\npython tcp_client.py <span class=\"token parameter variable\">&#8211;message<\/span> <span class=\"token string\">&#034;Hello from Client 1&#034;<\/span><\/p>\n<p><span class=\"token comment\"># \u5ba2\u6237\u7aef2<\/span><br \/>\npython tcp_client.py <span class=\"token parameter variable\">&#8211;message<\/span> <span class=\"token string\">&#034;Another message&#034;<\/span><\/p>\n<h4>2. \u538b\u529b\u6d4b\u8bd5<\/h4>\n<p><span class=\"token comment\"># \u670d\u52a1\u5668&#xff08;\u63d0\u9ad8\u8fde\u63a5\u6570&#xff09;<\/span><br \/>\npython tcp_server.py <span class=\"token parameter variable\">&#8211;connections<\/span> <span class=\"token number\">50<\/span><\/p>\n<p><span class=\"token comment\"># \u4f7f\u7528\u591a\u5ba2\u6237\u7aef\u5e76\u53d1\u6d4b\u8bd5<\/span><br \/>\n<span class=\"token keyword\">for<\/span> <span class=\"token for-or-select variable\">i<\/span> <span class=\"token keyword\">in<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">..<\/span><span class=\"token number\">20<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token keyword\">do<\/span><br \/>\n    python tcp_client.py <span class=\"token parameter variable\">&#8211;message<\/span> <span class=\"token string\">&#034;Request <span class=\"token variable\">$i<\/span>&#034;<\/span> <span class=\"token operator\">&amp;<\/span><br \/>\n<span class=\"token keyword\">done<\/span><\/p>\n<h4>3. \u5f02\u5e38\u60c5\u51b5\u6d4b\u8bd5<\/h4>\n<p><span class=\"token comment\"># \u670d\u52a1\u5668\u672a\u542f\u52a8\u65f6\u7684\u5ba2\u6237\u7aef<\/span><br \/>\npython tcp_client.py  <span class=\"token comment\"># \u663e\u793a\u8fde\u63a5\u62d2\u7edd<\/span><\/p>\n<p><span class=\"token comment\"># \u53d1\u9001\u9000\u51fa\u547d\u4ee4<\/span><br \/>\npython tcp_client.py <span class=\"token parameter variable\">&#8211;message<\/span> <span class=\"token string\">&#034;exit&#034;<\/span><\/p>\n<p><span class=\"token comment\"># \u670d\u52a1\u5668\u91cd\u542f\u6d4b\u8bd5<\/span><br \/>\n<span class=\"token comment\"># 1. \u542f\u52a8\u670d\u52a1\u5668<\/span><br \/>\n<span class=\"token comment\"># 2. \u5ba2\u6237\u7aef\u8fde\u63a5\u5e76\u53d1\u9001\u6570\u636e<\/span><br \/>\n<span class=\"token comment\"># 3. \u91cd\u542f\u670d\u52a1\u5668<\/span><br \/>\n<span class=\"token comment\"># 4. 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tcp\u670d\u52a1\u5668<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[92,205,4237,43,4238],"topic":[],"class_list":["post-44956","post","type-post","status-publish","format-standard","hentry","category-server","tag-github","tag-tcp-ip","tag-4237","tag-43","tag-aiops"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u5206\u79bb\u7684 TCP \u670d\u52a1\u5668\u4e0e\u5ba2\u6237\u7aef\u5b9e\u73b0-Python3\u5b9e\u73b0 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/44956.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u5206\u79bb\u7684 TCP \u670d\u52a1\u5668\u4e0e\u5ba2\u6237\u7aef\u5b9e\u73b0-Python3\u5b9e\u73b0 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb782\u6b21\uff0c\u70b9\u8d5e24\u6b21\uff0c\u6536\u85cf8\u6b21\u3002\u5ba2\u6237\u7aef\u53ef\u4ee5\u72ec\u7acb\u8fd0\u884c\u5e76\u8fde\u63a5\u5230\u8be5\u670d\u52a1\u5668\u3002\u4ee3\u7801\u5305\u542b\u8be6\u7ec6\u7684\u65e5\u5fd7\u8bb0\u5f55\u548c\u9519\u8bef\u5904\u7406\uff0c\u9002\u5408\u6559\u5b66\u6f14\u793a\u548c\u5b9e\u9645\u7f51\u7edc\u7f16\u7a0b\u53c2\u8003\u3002\u8fd9\u4e2a\u5206\u79bb\u5b9e\u73b0\u4e25\u683c\u9075\u5faaTCP\u534f\u8bae\u89c4\u8303\uff0c\u670d\u52a1\u5668\u7ed1\u5b9a\u5230\u6307\u5b9aIP\u5730\u5740\u3002\u4ee5\u4e0b\u662f\u5206\u79bb\u7684TCP\u670d\u52a1\u5668\u548c\u5ba2\u6237\u7aef\u4ee3\u7801\uff0c\u670d\u52a1\u5668\u7ed1\u5b9a\u5230\u3002_python3 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