{"id":8664,"date":"2024-03-14T08:30:01","date_gmt":"2024-03-14T08:30:01","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-perform-basic-socket-programming-using-the-c-language\/"},"modified":"2025-08-03T08:02:54","modified_gmt":"2025-08-03T08:02:54","slug":"how-to-perform-basic-socket-programming-using-the-c-language","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-perform-basic-socket-programming-using-the-c-language\/","title":{"rendered":"C Socket Programming: Server &#038; Client Example"},"content":{"rendered":"<p>Here is a simple example code written in C language for creating a basic socket server and client.<\/p>\n<p>Server-side code:<\/p>\n<pre class=\"post-pre\"><code class=\"lang-c\">#include &lt;stdio.h&gt;\r\n#include &lt;stdlib.h&gt;\r\n#include &lt;string.h&gt;\r\n#include &lt;unistd.h&gt;\r\n#include &lt;arpa\/inet.h&gt;\r\n#include &lt;sys\/types.h&gt;\r\n#include &lt;sys\/socket.h&gt;\r\n\r\n#define PORT 8888\r\n#define BUFFER_SIZE 1024\r\n\r\nint main() {\r\n    int server_fd, client_fd;\r\n    struct sockaddr_in server_addr, client_addr;\r\n    socklen_t client_addr_len = sizeof(client_addr);\r\n    char buffer[BUFFER_SIZE] = {0};\r\n\r\n    \/\/ \u521b\u5efasocket\r\n    if ((server_fd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {\r\n        perror(\"socket creation failed\");\r\n        exit(EXIT_FAILURE);\r\n    }\r\n\r\n    \/\/ \u8bbe\u7f6e\u670d\u52a1\u5668\u5730\u5740\r\n    server_addr.sin_family = AF_INET;\r\n    server_addr.sin_addr.s_addr = INADDR_ANY;\r\n    server_addr.sin_port = htons(PORT);\r\n\r\n    \/\/ \u7ed1\u5b9a\u5730\u5740\u548c\u7aef\u53e3\r\n    if (bind(server_fd, (struct sockaddr *)&amp;server_addr, sizeof(server_addr)) &lt; 0) {\r\n        perror(\"bind failed\");\r\n        exit(EXIT_FAILURE);\r\n    }\r\n\r\n    \/\/ \u76d1\u542c\u8fde\u63a5\r\n    if (listen(server_fd, 5) &lt; 0) {\r\n        perror(\"listen failed\");\r\n        exit(EXIT_FAILURE);\r\n    }\r\n\r\n    \/\/ \u63a5\u53d7\u5ba2\u6237\u7aef\u8fde\u63a5\r\n    if ((client_fd = accept(server_fd, (struct sockaddr *)&amp;client_addr, &amp;client_addr_len)) &lt; 0) {\r\n        perror(\"accept failed\");\r\n        exit(EXIT_FAILURE);\r\n    }\r\n\r\n    \/\/ \u4ece\u5ba2\u6237\u7aef\u6536\u53d6\u6570\u636e\r\n    if (read(client_fd, buffer, BUFFER_SIZE) &lt; 0) {\r\n        perror(\"read failed\");\r\n        exit(EXIT_FAILURE);\r\n    }\r\n\r\n    printf(\"Received message: %s\\n\", buffer);\r\n\r\n    \/\/ \u5173\u95ed\u8fde\u63a5\r\n    close(client_fd);\r\n    close(server_fd);\r\n\r\n    return 0;\r\n}\r\n<\/code><\/pre>\n<p>Client-side code:<\/p>\n<pre class=\"post-pre\"><code class=\"lang-c\">#include &lt;stdio.h&gt;\r\n#include &lt;stdlib.h&gt;\r\n#include &lt;string.h&gt;\r\n#include &lt;unistd.h&gt;\r\n#include &lt;arpa\/inet.h&gt;\r\n#include &lt;sys\/types.h&gt;\r\n#include &lt;sys\/socket.h&gt;\r\n\r\n#define PORT 8888\r\n#define SERVER_IP \"127.0.0.1\"\r\n#define BUFFER_SIZE 1024\r\n\r\nint main() {\r\n    int client_fd;\r\n    struct sockaddr_in server_addr;\r\n    char buffer[BUFFER_SIZE] = \"Hello from client\";\r\n\r\n    \/\/ \u521b\u5efasocket\r\n    if ((client_fd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {\r\n        perror(\"socket creation failed\");\r\n        exit(EXIT_FAILURE);\r\n    }\r\n\r\n    \/\/ \u8bbe\u7f6e\u670d\u52a1\u5668\u5730\u5740\r\n    server_addr.sin_family = AF_INET;\r\n    server_addr.sin_addr.s_addr = inet_addr(SERVER_IP);\r\n    server_addr.sin_port = htons(PORT);\r\n\r\n    \/\/ \u8fde\u63a5\u670d\u52a1\u5668\r\n    if (connect(client_fd, (struct sockaddr *)&amp;server_addr, sizeof(server_addr)) &lt; 0) {\r\n        perror(\"connect failed\");\r\n        exit(EXIT_FAILURE);\r\n    }\r\n\r\n    \/\/ \u53d1\u9001\u6570\u636e\u7ed9\u670d\u52a1\u5668\r\n    if (write(client_fd, buffer, strlen(buffer)) &lt; 0) {\r\n        perror(\"write failed\");\r\n        exit(EXIT_FAILURE);\r\n    }\r\n\r\n    \/\/ \u5173\u95ed\u8fde\u63a5\r\n    close(client_fd);\r\n\r\n    return 0;\r\n}\r\n<\/code><\/pre>\n<p>Please note that this is just a very simple example used to demonstrate basic Socket programming with C language. In actual applications, you may need to add more error handling and security checks.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Here is a simple example code written in C language for creating a basic socket server and client. Server-side code: #include &lt;stdio.h&gt; #include &lt;stdlib.h&gt; #include &lt;string.h&gt; #include &lt;unistd.h&gt; #include &lt;arpa\/inet.h&gt; #include &lt;sys\/types.h&gt; #include &lt;sys\/socket.h&gt; #define PORT 8888 #define BUFFER_SIZE 1024 int main() { int server_fd, client_fd; struct sockaddr_in server_addr, client_addr; socklen_t client_addr_len = sizeof(client_addr); char [&hellip;]<\/p>\n","protected":false},"author":14,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[5620,381,3216,11784,1860],"class_list":["post-8664","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-c-sockets","tag-c-programming","tag-network-programming","tag-server-client","tag-socket-programming"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>C Socket Programming: Server &amp; Client Example - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn basic C socket programming with server\/client code examples. 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