UNIX域套接字服务器和客户端无法双向通信

struct sockaddr_un addr;
memset(&addr, 0, sizeof(addr));
addr.sun_family = AF_UNIX;
strcpy(addr.sun_path, "/tmp/my_socket");

unlink(addr.sun_path);
bind(sock, (struct sockaddr*)&addr, sizeof(addr));
listen(sock, SOMAXCONN);

struct sockaddr_un addr;
memset(&addr, 0, sizeof(addr));
addr.sun_family = AF_UNIX;
strcpy(addr.sun_path, "/tmp/my_socket");

connect(sock, (struct sockaddr*)&addr, sizeof(addr));

// 发送数据
send(sock, "Hello, client!", strlen("Hello, client!"), 0);

// 接收数据
char buffer[1024];
ssize_t recv_len = recv(sock, buffer, sizeof(buffer) - 1, 0);
buffer[recv_len] = '\0';
printf("Received message: %s\n", buffer);

close(sock);