Re: [newbie] specify address in various formats?
Re: [newbie] specify address in various formats?
- Subject: Re: [newbie] specify address in various formats?
- From: email@hidden (Sebastian Mecklenburg)
- Date: Sat, 24 May 2003 21:19:18 +0200
On Saturday, May 24, 2003, at 08:20 PM, Sebastian Mecklenburg wrote:
hello,
i want to program a simple tcp-client (using unix sockets) where the
user should be able to specify the servers address either as ipv6
address ("fe80::1"), ipv4 address ("127.0.0.1") or as name-string
("localhost" or "www.whatever.org"). how would i do this? i tried
getaddrinfo() and then passing the ai_addr field of the resulting
addrinfo struct to the connect() function, but the connect fails.
a heavily shortened codesample:
doConnect(hostname) {
struct addrinfo hints, *res;
memset(&hints, 0, sizeof(hints));
hints.ai_flags = AI_CANONNAME; //AI_PASSIVE (not for clients)
hints.ai_family = PF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
getaddrinfo(in_hostname, NULL, &hints, &res);
[...]
me again...
i must specify the portname, like
getaddrinfo(in_hostname, "80", &hints, &res);
then it works better :-)
but does someone know, why trying to connect to "www.kame.net" gives a
"No route to host" error? they use ipv6, could that be a reason?
regards,
sebastian mecklenburg
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