#include #include #include #ifdef _WIN32 #include #include #else #include #include #include #include #endif #define PORT 8080 #define BUFFER_SIZE 1024 #define HTML_FILE "index.html" int main() { #ifdef _WIN32 WSADATA wsaData; if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0) { perror("WSAStartup failed"); exit(EXIT_FAILURE); } SetConsoleOutputCP(CP_UTF8); #endif int server_fd, new_socket; struct sockaddr_in address; int addrlen = sizeof(address); char buffer[BUFFER_SIZE] = {0}; printf("Hello World!\n"); // 创建socket文件描述符 if ((server_fd = socket(AF_INET, SOCK_STREAM, 0)) == 0) { perror("socket failed"); exit(EXIT_FAILURE); } // 设置socket选项，允许地址重用 int opt = 1; if (setsockopt(server_fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&opt, sizeof(opt))) { perror("setsockopt"); exit(EXIT_FAILURE); } // 配置服务器地址结构 address.sin_family = AF_INET; address.sin_addr.s_addr = INADDR_ANY; address.sin_port = htons(PORT); // 绑定socket到指定地址和端口 if (bind(server_fd, (struct sockaddr *)&address, sizeof(address)) < 0) { perror("bind failed"); exit(EXIT_FAILURE); } // 开始监听连接 if (listen(server_fd, 3) < 0) { perror("listen"); exit(EXIT_FAILURE); } printf("HTTP服务器正在监听 %d 端口...\n", PORT); while(1) { if ((new_socket = accept(server_fd, (struct sockaddr *)&address, &addrlen)) < 0) { perror("accept"); exit(EXIT_FAILURE); } int valread = recv(new_socket, buffer, BUFFER_SIZE, 0); printf("收到请求:\n%s\n", buffer); FILE *html_file = fopen(HTML_FILE, "rb"); if (!html_file) { const char *error_response = "HTTP/1.1 404 Not Found\r\n" "Content-Type: text/html; charset=utf-8\r\n" "Connection: close\r\n" "\r\n" "

404 - 文件未找到

"; send(new_socket, error_response, strlen(error_response), 0); #ifdef _WIN32 closesocket(new_socket); #else close(new_socket); #endif continue; } fseek(html_file, 0, SEEK_END); long file_size = ftell(html_file); fseek(html_file, 0, SEEK_SET); char *html_content = (char *)malloc(file_size + 1); if (!html_content) { fclose(html_file); const char *error_response = "HTTP/1.1 500 Internal Server Error\r\n" "Content-Type: text/html; charset=utf-8\r\n" "Connection: close\r\n" "\r\n" "

500 - 服务器错误

"; send(new_socket, error_response, strlen(error_response), 0); #ifdef _WIN32 closesocket(new_socket); #else close(new_socket); #endif continue; } fread(html_content, 1, file_size, html_file); html_content[file_size] = '\0'; fclose(html_file); char header[512]; sprintf(header, "HTTP/1.1 200 OK\r\n" "Content-Type: text/html; charset=utf-8\r\n" "Content-Length: %ld\r\n" "Connection: close\r\n" "\r\n", file_size); send(new_socket, header, strlen(header), 0); send(new_socket, html_content, file_size, 0); free(html_content); printf("响应已发送\n"); #ifdef _WIN32 closesocket(new_socket); #else close(new_socket); #endif } #ifdef _WIN32 WSACleanup(); #endif return 0; }