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sudo apt-get update sudo apt-get install build-essential sudo apt-get install libnetfilter-queue-dev
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nfnetlink nfnetlink_queue nfnetfilter ipv6
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sudo update-initramfs -u
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#include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <arpa/inet.h> #define BUFFER_SIZE 1024 #define PORT 8888 int main() { int server_socket, client_socket; struct sockaddr_in server_addr, client_addr; char buffer[BUFFER_SIZE]; // ½¨ÉèЧÀÍÆ÷Ì×½Ó×Ö if ((server_socket = socket(AF_INET, SOCK_STREAM, 0)) == -1) { perror("socket"); exit(1); } // ÉèÖÃЧÀÍÆ÷µØµã memset(&server_addr, 0, sizeof(server_addr)); server_addr.sin_family = AF_INET; server_addr.sin_addr.s_addr = htonl(INADDR_ANY); server_addr.sin_port = htons(PORT); // ½«Ð§ÀÍÆ÷°ó¶¨µ½Ö¸¶¨µØµãºÍ¶Ë¿Ú if (bind(server_socket, (struct sockaddr*)&server_addr, sizeof(server_addr)) == -1) { perror("bind"); exit(1); } // ¼àÌýÅþÁ¬ÇëÇó if (listen(server_socket, 5) == -1) { perror("listen"); exit(1); } // ½ÓÊÜÅþÁ¬ÇëÇó socklen_t client_len = sizeof(client_addr); if ((client_socket = accept(server_socket, (struct sockaddr*)&client_addr, &client_len)) == -1) { perror("accept"); exit(1); } // ¶ÁÈ¡¿Í»§¶Ë·¢Ë͵ÄÊý¾Ý if (read(client_socket, buffer, BUFFER_SIZE) == -1) { perror("read"); exit(1); } printf("Received message: %s ", buffer); // ¹Ø±ÕÌ×½Ó×Ö close(client_socket); close(server_socket); return 0; }
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#include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <arpa/inet.h> #define BUFFER_SIZE 1024 #define PORT 8888 #define SERVER_IP "127.0.0.1" int main() { int client_socket; struct sockaddr_in server_addr; char buffer[BUFFER_SIZE]; // ½¨Éè¿Í»§¶ËÌ×½Ó×Ö if ((client_socket = socket(AF_INET, SOCK_STREAM, 0)) == -1) { perror("socket"); exit(1); } // ÉèÖÃЧÀÍÆ÷µØµã memset(&server_addr, 0, sizeof(server_addr)); server_addr.sin_family = AF_INET; server_addr.sin_addr.s_addr = inet_addr(SERVER_IP); server_addr.sin_port = htons(PORT); // ÌᳫÅþÁ¬ÇëÇó if (connect(client_socket, (struct sockaddr*)&server_addr, sizeof(server_addr)) == -1) { perror("connect"); exit(1); } // ·¢ËÍÊý¾ÝÖÁЧÀÍÆ÷ strncpy(buffer, "Hello, Server!", BUFFER_SIZE); if (write(client_socket, buffer, BUFFER_SIZE) == -1) { perror("write"); exit(1); } // ¹Ø±ÕÌ×½Ó×Ö close(client_socket); return 0; }
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gcc server.c -o server ./server
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gcc client.c -o client ./client
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