{"id":15920,"date":"2026-04-26T10:11:03","date_gmt":"2026-04-26T02:11:03","guid":{"rendered":"https:\/\/top.duoku.icu\/libs\/15920.html"},"modified":"2026-04-26T10:11:03","modified_gmt":"2026-04-26T02:11:03","slug":"%e7%bd%91%e7%bb%9c%e7%bc%96%e7%a8%8b-socket-%e6%8a%80%e6%9c%af%e8%af%a6%e7%bb%86%e4%bd%bf%e7%94%a8%e6%95%99%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/www.srclibs.com\/index.php\/2026\/04\/26\/%e7%bd%91%e7%bb%9c%e7%bc%96%e7%a8%8b-socket-%e6%8a%80%e6%9c%af%e8%af%a6%e7%bb%86%e4%bd%bf%e7%94%a8%e6%95%99%e7%a8%8b\/","title":{"rendered":"\u7f51\u7edc\u7f16\u7a0b Socket \u6280\u672f\u8be6\u7ec6\u4f7f\u7528\u6559\u7a0b"},"content":{"rendered":"<div style=\"text-align:center;margin:30px 0;\"><img decoding=\"async\" src=\"https:\/\/top.duoku.icu\/wp-content\/uploads\/2026\/04\/image-87.png\" alt=\"\u7f51\u7edc\u7f16\u7a0b Socket \u6280\u672f\u8be6\u7ec6\u4f7f\u7528\u6559\u7a0b\" style=\"max-width:100%;height:auto;border-radius:12px;box-shadow:0 4px 12px rgba(0,0,0,0.1);\"><\/div>\n<h1>\u7f51\u7edc\u7f16\u7a0b Socket \u6280\u672f\u8be6\u7ec6\u4f7f\u7528\u6559\u7a0b<\/h1>\n<h2>Socket \u6280\u672f\u6982\u8ff0<\/h2>\n<p>Socket\uff08\u5957\u63a5\u5b57\uff09\u662f\u7f51\u7edc\u7f16\u7a0b\u7684\u6838\u5fc3\u63a5\u53e3\uff0c\u5b83\u5982\u540c\u5e94\u7528\u7a0b\u5e8f\u4e0e\u7f51\u7edc\u4e4b\u95f4\u7684&#8221;\u63d2\u5ea7&#8221;\uff0c\u8ba9\u4e0d\u540c\u7684\u8fdb\u7a0b\u80fd\u591f\u5728\u7f51\u7edc\u4e0a\u8fdb\u884c\u901a\u4fe1\u3002Socket \u6280\u672f\u8bde\u751f\u4e8e Unix \u7cfb\u7edf\uff0c\u5982\u4eca\u5df2\u6210\u4e3a\u6240\u6709\u73b0\u4ee3\u64cd\u4f5c\u7cfb\u7edf\u7684\u6807\u51c6\u7f51\u7edc API\u3002<\/p>\n<h3>\u6838\u5fc3\u6982\u5ff5<\/h3>\n<ul>\n<li><strong>Socket<\/strong>\uff1a\u7f51\u7edc\u8fde\u63a5\u7684\u4e24\u7aef\uff0c\u4e00\u4e2a Socket \u4ee3\u8868\u4e00\u4e2a\u901a\u4fe1\u7aef\u70b9<\/li>\n<li><strong>IP \u5730\u5740<\/strong>\uff1a\u7f51\u7edc\u4e2d\u8bbe\u5907\u7684\u552f\u4e00\u6807\u8bc6\uff0c\u5982 192.168.1.100<\/li>\n<li><strong>\u7aef\u53e3\u53f7<\/strong>\uff1a\u540c\u4e00\u8bbe\u5907\u4e0a\u4e0d\u540c\u5e94\u7528\u7684\u6807\u8bc6\uff0c\u8303\u56f4 0-65535<\/li>\n<li><strong>\u534f\u8bae\u6808<\/strong>\uff1aTCP\/IP \u534f\u8bae\u65cf\uff0c\u5305\u542b\u4f20\u8f93\u5c42\u3001\u7f51\u7edc\u5c42\u7b49<\/li>\n<li><strong>\u5ba2\u6237\u7aef\/\u670d\u52a1\u7aef\u6a21\u578b<\/strong>\uff1a\u6700\u5e38\u89c1\u7684\u7f51\u7edc\u901a\u4fe1\u67b6\u6784<\/li>\n<\/ul>\n<h3>TCP vs UDP \u5bf9\u6bd4<\/h3>\n<table border=\"1\" cellpadding=\"5\">\n<tr>\n<th>\u7279\u6027<\/th>\n<th>TCP<\/th>\n<th>UDP<\/th>\n<\/tr>\n<tr>\n<td>\u8fde\u63a5\u6027<\/td>\n<td>\u9762\u5411\u8fde\u63a5<\/td>\n<td>\u65e0\u8fde\u63a5<\/td>\n<\/tr>\n<tr>\n<td>\u53ef\u9760\u6027<\/td>\n<td>\u53ef\u9760\u4f20\u8f93\uff0c\u4fdd\u8bc1\u6570\u636e\u987a\u5e8f<\/td>\n<td>\u4e0d\u53ef\u9760\uff0c\u53ef\u80fd\u4e22\u5305<\/td>\n<\/tr>\n<tr>\n<td>\u901f\u5ea6<\/td>\n<td>\u8f83\u6162\uff0c\u6709\u63e1\u624b\u5f00\u9500<\/td>\n<td>\u5feb\uff0c\u65e0\u989d\u5916\u5f00\u9500<\/td>\n<\/tr>\n<tr>\n<td>\u9002\u7528\u573a\u666f<\/td>\n<td>\u6587\u4ef6\u4f20\u8f93\u3001\u7f51\u9875\u6d4f\u89c8<\/td>\n<td>\u89c6\u9891\u76f4\u64ad\u3001\u5728\u7ebf\u6e38\u620f<\/td>\n<\/tr>\n<tr>\n<td>\u6d41\u91cf\u63a7\u5236<\/td>\n<td>\u6709<\/td>\n<td>\u65e0<\/td>\n<\/tr>\n<\/table>\n<h2>Socket \u6838\u5fc3\u64cd\u4f5c\u6d41\u7a0b<\/h2>\n<h3>\u670d\u52a1\u7aef\u6d41\u7a0b<\/h3>\n<ol>\n<li><strong>\u521b\u5efa Socket<\/strong>\uff1a\u8c03\u7528 `socket()` \u51fd\u6570\u521b\u5efa\u5957\u63a5\u5b57<\/li>\n<li><strong>\u7ed1\u5b9a\u5730\u5740<\/strong>\uff1a\u4f7f\u7528 `bind()` \u5c06 Socket \u7ed1\u5b9a\u5230\u7279\u5b9a IP \u548c\u7aef\u53e3<\/li>\n<li><strong>\u76d1\u542c\u8fde\u63a5<\/strong>\uff1a\u8c03\u7528 `listen()` \u8fdb\u5165\u76d1\u542c\u72b6\u6001<\/li>\n<li><strong>\u63a5\u53d7\u8fde\u63a5<\/strong>\uff1a\u4f7f\u7528 `accept()` \u7b49\u5f85\u5e76\u63a5\u53d7\u5ba2\u6237\u7aef\u8fde\u63a5<\/li>\n<li><strong>\u6536\u53d1\u6570\u636e<\/strong>\uff1a\u901a\u8fc7 `read()\/write()` \u6216 `recv()\/send()` \u4ea4\u6362\u6570\u636e<\/li>\n<li><strong>\u5173\u95ed\u8fde\u63a5<\/strong>\uff1a\u8c03\u7528 `close()` \u5173\u95ed Socket<\/li>\n<\/ul>\n<h3>\u5ba2\u6237\u7aef\u6d41\u7a0b<\/h3>\n<ol>\n<li><strong>\u521b\u5efa Socket<\/strong>\uff1a\u8c03\u7528 `socket()` \u51fd\u6570<\/li>\n<li><strong>\u8fde\u63a5\u670d\u52a1\u7aef<\/strong>\uff1a\u4f7f\u7528 `connect()` \u8fde\u63a5\u5230\u670d\u52a1\u7aef\u5730\u5740<\/li>\n<li><strong>\u6536\u53d1\u6570\u636e<\/strong>\uff1a\u901a\u8fc7 Socket \u4ea4\u6362\u6570\u636e<\/li>\n<li><strong>\u5173\u95ed\u8fde\u63a5<\/strong>\uff1a\u8c03\u7528 `close()` \u5173\u95ed\u8fde\u63a5<\/li>\n<\/ul>\n<h2>Python \u5b9e\u73b0\u793a\u4f8b<\/h2>\n<h3>TCP Socket \u670d\u52a1\u7aef<\/h3>\n<p>&#8220;`python<br \/>\nimport socket<\/p>\n<p>def create_tcp_server(host=&#8217;0.0.0.0&#8242;, port=8888):<br \/>\n    # 1. \u521b\u5efa Socket\uff08AF_INET: IPv4, SOCK_STREAM: TCP\uff09<br \/>\n    server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)<\/p>\n<p>    # \u5141\u8bb8\u7aef\u53e3\u590d\u7528<br \/>\n    server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)<\/p>\n<p>    # 2. \u7ed1\u5b9a\u5730\u5740<br \/>\n    server_socket.bind((host, port))<\/p>\n<p>    # 3. \u5f00\u59cb\u76d1\u542c\uff08\u6700\u5927\u6392\u961f\u8fde\u63a5\u6570\u4e3a 5\uff09<br \/>\n    server_socket.listen(5)<br \/>\n    print(f&#8221;\u670d\u52a1\u76d1\u542c\u5728 {host}:{port}&#8221;)<\/p>\n<p>    try:<br \/>\n        while True:<br \/>\n            # 4. \u63a5\u53d7\u5ba2\u6237\u7aef\u8fde\u63a5<br \/>\n            client_socket, client_addr = server_socket.accept()<br \/>\n            print(f&#8221;\u65b0\u8fde\u63a5\uff1a{client_addr}&#8221;)<\/p>\n<p>            try:<br \/>\n                # 5. \u63a5\u6536\u6570\u636e\uff08\u6700\u591a\u63a5\u6536 1024 \u5b57\u8282\uff09<br \/>\n                data = client_socket.recv(1024).decode(&#8216;utf-8&#8217;)<br \/>\n                print(f&#8221;\u6536\u5230\u6d88\u606f\uff1a{data}&#8221;)<\/p>\n<p>                # \u53d1\u9001\u54cd\u5e94<br \/>\n                response = &#8220;\u670d\u52a1\u5668\u6536\u5230\u6d88\u606f&#8221;<br \/>\n                client_socket.send(response.encode(&#8216;utf-8&#8217;))<\/p>\n<p>            except Exception as e:<br \/>\n                print(f&#8221;\u901a\u4fe1\u9519\u8bef\uff1a{e}&#8221;)<br \/>\n            finally:<br \/>\n                # \u5173\u95ed\u5ba2\u6237\u7aef Socket<br \/>\n                client_socket.close()<\/p>\n<p>    except KeyboardInterrupt:<br \/>\n        print(&#8220;\u670d\u52a1\u5668\u5173\u95ed&#8221;)<br \/>\n    finally:<br \/>\n        # \u5173\u95ed\u670d\u52a1\u5668 Socket<br \/>\n        server_socket.close()<\/p>\n<p>if __name__ == &#8220;__main__&#8221;:<br \/>\n    create_tcp_server()<\/p>\n<pre><code>\n<h3>TCP Socket \u5ba2\u6237\u7aef<\/h3>\n\n<\/code><\/pre>\n<p>python<br \/>\nimport socket<\/p>\n<p>def create_tcp_client(host=&#8217;127.0.0.1&#8242;, port=8888):<br \/>\n    # 1. \u521b\u5efa Socket<br \/>\n    client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)<\/p>\n<p>    try:<br \/>\n        # 2. \u8fde\u63a5\u670d\u52a1\u7aef<br \/>\n        client_socket.connect((host, port))<br \/>\n        print(f&#8221;\u5df2\u8fde\u63a5\u5230 {host}:{port}&#8221;)<\/p>\n<p>        # 3. \u53d1\u9001\u6570\u636e<br \/>\n        message = &#8220;\u4f60\u597d\uff0c\u670d\u52a1\u5668\uff01&#8221;<br \/>\n        client_socket.send(message.encode(&#8216;utf-8&#8217;))<br \/>\n        print(f&#8221;\u53d1\u9001\uff1a{message}&#8221;)<\/p>\n<p>        # 4. \u63a5\u6536\u54cd\u5e94<br \/>\n        response = client_socket.recv(1024).decode(&#8216;utf-8&#8217;)<br \/>\n        print(f&#8221;\u6536\u5230\u54cd\u5e94\uff1a{response}&#8221;)<\/p>\n<p>    except Exception as e:<br \/>\n        print(f&#8221;\u5ba2\u6237\u7aef\u9519\u8bef\uff1a{e}&#8221;)<br \/>\n    finally:<br \/>\n        # 5. \u5173\u95ed\u8fde\u63a5<br \/>\n        client_socket.close()<br \/>\n        print(&#8220;\u8fde\u63a5\u5df2\u5173\u95ed&#8221;)<\/p>\n<p>if __name__ == &#8220;__main__&#8221;:<br \/>\n    create_tcp_client()<\/p>\n<pre><code>\n<h3>UDP Socket \u793a\u4f8b<\/h3>\n\n<\/code><\/pre>\n<p>python<br \/>\nimport socket<\/p>\n<p>def create_udp_server(host=&#8217;0.0.0.0&#8242;, port=9999):<br \/>\n    # SOCK_DGRAM: UDP \u534f\u8bae<br \/>\n    udp_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)<br \/>\n    udp_socket.bind((host, port))<br \/>\n    print(f&#8221;UDP \u670d\u52a1\u76d1\u542c\u5728 {host}:{port}&#8221;)<\/p>\n<p>    try:<br \/>\n        while True:<br \/>\n            # UDP \u65e0\u9700\u8fde\u63a5\uff0c\u76f4\u63a5\u63a5\u6536<br \/>\n            data, client_addr = udp_socket.recvfrom(1024)<br \/>\n            print(f&#8221;\u4ece {client_addr} \u6536\u5230\uff1a{data.decode(&#8216;utf-8&#8217;)}&#8221;)<\/p>\n<p>            # \u53d1\u9001\u54cd\u5e94<br \/>\n            response = &#8220;UDP \u670d\u52a1\u5668\u56de\u590d&#8221;<br \/>\n            udp_socket.sendto(response.encode(&#8216;utf-8&#8242;), client_addr)<\/p>\n<p>    finally:<br \/>\n        udp_socket.close()<\/p>\n<p>def create_udp_client(host=&#8217;127.0.0.1&#8217;, port=9999):<br \/>\n    udp_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)<\/p>\n<p>    try:<br \/>\n        message = &#8220;UDP \u5ba2\u6237\u7aef\u6d88\u606f&#8221;<br \/>\n        udp_socket.sendto(message.encode(&#8216;utf-8&#8217;), (host, port))<br \/>\n        print(f&#8221;\u53d1\u9001\uff1a{message}&#8221;)<\/p>\n<p>        # UDP \u63a5\u6536\u53ef\u80fd\u6709\u591a\u4e2a\u670d\u52a1\u5668\u7684\u54cd\u5e94<br \/>\n        data, _ = udp_socket.recvfrom(1024)<br \/>\n        print(f&#8221;\u6536\u5230\uff1a{data.decode(&#8216;utf-8&#8217;)}&#8221;)<\/p>\n<p>    finally:<br \/>\n        udp_socket.close()<\/p>\n<p>if __name__ == &#8220;__main__&#8221;:<br \/>\n    # \u5148\u8fd0\u884c\u670d\u52a1\u7aef\uff0c\u518d\u8fd0\u884c\u5ba2\u6237\u7aef<br \/>\n    create_udp_client()<\/p>\n<pre><code>\n<h2>C\/C++ Socket \u5b9e\u73b0<\/h2>\n\n<h3>TCP \u670d\u52a1\u7aef\uff08C \u8bed\u8a00\uff09<\/h3>\n\n<\/code><\/pre>\n<p>c<br \/>\n#include <stdio.h><br \/>\n#include <stdlib.h><br \/>\n#include <string.h><br \/>\n#include <unistd.h><br \/>\n#include <arpa\/inet.h><\/p>\n<p>#define PORT 8888<br \/>\n#define BUFFER_SIZE 1024<\/p>\n<p>int main() {<br \/>\n    int server_fd, client_fd;<br \/>\n    struct sockaddr_in address;<br \/>\n    int opt = 1;<br \/>\n    char buffer[BUFFER_SIZE] = {0};<\/p>\n<p>    \/\/ 1. \u521b\u5efa Socket<br \/>\n    if ((server_fd = socket(AF_INET, SOCK_STREAM, 0)) == 0) {<br \/>\n        perror(&#8220;socket failed&#8221;);<br \/>\n        exit(EXIT_FAILURE);<br \/>\n    }<\/p>\n<p>    \/\/ 2. \u8bbe\u7f6e\u9009\u9879\uff08\u5141\u8bb8\u7aef\u53e3\u590d\u7528\uff09<br \/>\n    if (setsockopt(server_fd, SOL_SOCKET, SO_REUSEADDR | SO_REUSEPORT, &#038;opt, sizeof(opt))) {<br \/>\n        perror(&#8220;setsockopt&#8221;);<br \/>\n        exit(EXIT_FAILURE);<br \/>\n    }<\/p>\n<p>    address.sin_family = AF_INET;<br \/>\n    address.sin_addr.s_addr = INADDR_ANY;<br \/>\n    address.sin_port = htons(PORT);<\/p>\n<p>    \/\/ 3. \u7ed1\u5b9a\u5730\u5740<br \/>\n    if (bind(server_fd, (struct sockaddr *)&#038;address, sizeof(address)) < 0) {\n        perror(\"bind failed\");\n        exit(EXIT_FAILURE);\n    }\n    \n    \/\/ 4. \u76d1\u542c\n    if (listen(server_fd, 3) < 0) {\n        perror(\"listen\");\n        exit(EXIT_FAILURE);\n    }\n    \n    printf(\"\u670d\u52a1\u5668\u76d1\u542c\u7aef\u53e3\uff1a%d\\n\", PORT);\n    \n    \/\/ 5. \u63a5\u53d7\u8fde\u63a5\n    socklen_t len = sizeof(address);\n    if ((client_fd = accept(server_fd, (struct sockaddr *)&#038;address, &#038;len)) < 0) {\n        perror(\"accept\");\n        exit(EXIT_FAILURE);\n    }\n    \n    \/\/ 6. \u6536\u53d1\u6570\u636e\n    read(client_fd, buffer, BUFFER_SIZE);\n    printf(\"\u6536\u5230\uff1a%s\\n\", buffer);\n    \n    const char *response = \"Hello from server\";\n    write(client_fd, response, strlen(response));\n    \n    close(client_fd);\n    close(server_fd);\n    return 0;\n}\n```\n\n\n\n<h2>\u5b9e\u9645\u5e94\u7528\u573a\u666f<\/h2>\n<h3>\u573a\u666f\u4e00\uff1aWeb \u670d\u52a1\u5668<\/h3>\n<p>\u4f7f\u7528 Socket \u6784\u5efa\u7b80\u6613 HTTP \u670d\u52a1\u5668\uff0c\u5904\u7406\u7f51\u9875\u8bf7\u6c42\u3002\u4f8b\u5982 Python \u7684 Flask\u3001Django \u6846\u67b6\u5e95\u5c42\u90fd\u4f7f\u7528 Socket \u6280\u672f\u3002<\/p>\n<h3>\u573a\u666f\u4e8c\uff1a\u5373\u65f6\u901a\u8baf<\/h3>\n<p>\u5b9e\u73b0\u804a\u5929\u5ba4\u3001IM \u5e94\u7528\uff0c\u5982\u5fae\u4fe1\u3001Slack \u7684\u540e\u53f0\u670d\u52a1\u3002\u901a\u5e38\u4f7f\u7528 TCP \u4fdd\u8bc1\u6d88\u606f\u53ef\u9760\u9001\u8fbe\u3002<\/p>\n<h3>\u573a\u666f\u4e09\uff1a\u5728\u7ebf\u6e38\u620f<\/h3>\n<p>\u7f51\u7edc\u6e38\u620f\u9700\u8981\u4f4e\u5ef6\u8fdf\u901a\u4fe1\uff0c\u5e38\u91c7\u7528 UDP \u534f\u8bae\u3002\u5982\u738b\u8005\u8363\u8000\u3001\u5403\u9e21\u7c7b\u6e38\u620f\u7684\u5b9e\u65f6\u5bf9\u6218\u6570\u636e\u540c\u6b65\u3002<\/p>\n<h3>\u573a\u666f\u56db\uff1a\u5206\u5e03\u5f0f\u7cfb\u7edf<\/h3>\n<p>\u5fae\u670d\u52a1\u67b6\u6784\u4e2d\u7684\u670d\u52a1\u95f4\u8c03\u7528\uff0c\u5982 gRPC\u3001Dubbo \u7b49\u6846\u67b6\u57fa\u4e8e Socket \u5b9e\u73b0\u8fdc\u7a0b\u8fc7\u7a0b\u8c03\u7528\u3002<\/p>\n<h3>\u573a\u666f\u4e94\uff1a\u7269\u8054\u7f51\uff08IoT\uff09<\/h3>\n<p>\u667a\u80fd\u8bbe\u5907\u901a\u8fc7 Socket \u4e0e\u4e91\u7aef\u670d\u52a1\u5668\u901a\u4fe1\uff0c\u4f20\u8f93\u4f20\u611f\u5668\u6570\u636e\u3001\u63a5\u6536\u63a7\u5236\u6307\u4ee4\u3002<\/p>\n<h2>\u5e38\u89c1\u95ee\u9898\u4e0e\u6700\u4f73\u5b9e\u8df5<\/h2>\n<h3>\u5e38\u89c1\u95ee\u9898<\/h3>\n<ol>\n<li><strong>\u5730\u5740\u5360\u7528\u9519\u8bef<\/strong>\uff1a\u7ed1\u5b9a\u7aef\u53e3\u65f6\u51fa\u73b0 &#8220;Address already in use&#8221;<\/li>\n<li>\u89e3\u51b3\uff1a\u8bbe\u7f6e SO_REUSEADDR \u9009\u9879\uff0c\u6216\u7b49\u5f85 2MSL 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