linux socket中的connect無法連接

struct hostent *ho=gethostbyname(url);

if (!ho) fprintf(stderr, "WRONG URL\n");

in.sin_addr.s_addr=((unsigned long *)(ho->h_addr_list[0]))[0];

fprintf(stderr, "ip = %s\n", inet_addr(in.sin_addr.s_addr));

in.sin_family=ho->h_addrtype;

in.sin_port=htons(1234);

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

妳看看解釋出來的IP地址對不對，然後用telnet ip 1234試試