socket_t client_socket (char const * host, char const * port) {
socket_t sock=INVALID_SOCKET;
struct addrinfo * info=make_addrinfo(host, port);
if (info) {
char hostname[NI_MAXHOST];
char portname[NI_MAXSERV];
if (!setnameinfo(info->ai_addr, info->ai_addrlen, hostname, portname))
goto END;
NANOLOG("[%s:%s]\n", hostname, portname);
sock=socket(info->ai_family, info->ai_socktype, info->ai_protocol);
if (sock==INVALID_SOCKET) {
NANOLOG("socket failed <%d>\n", nanonet_error());
goto END;
}
if (connect(sock, info->ai_addr, info->ai_addrlen)==INVALID_SOCKET) {
NANOLOG("connect failed <%d>\n", nanonet_error());
close_socket_t(sock);
sock=INVALID_SOCKET;
goto END;
}
} else
NANOLOG("make_addrinfo failed <%d>\n", nanonet_error());
END:
freeaddrinfo(info);
return sock;
}
/*
* Save this address on the server, if not already there.
*/
static void
save_addr(ad_disc_cds_t *cds, sa_family_t af, uchar_t *addr, size_t alen)
{
struct addrinfo *ai, *new_ai, *last_ai;
new_ai = make_addrinfo(af, addr, alen);
if (new_ai == NULL)
return;
last_ai = NULL;
for (ai = cds->cds_ai; ai != NULL; ai = ai->ai_next) {
last_ai = ai;
if (new_ai->ai_family == ai->ai_family &&
new_ai->ai_addrlen == ai->ai_addrlen &&
0 == memcmp(new_ai->ai_addr, ai->ai_addr,
ai->ai_addrlen)) {
/* it's already there */
freeaddrinfo(new_ai);
return;
}
}
/* Not found. Append. */
if (last_ai != NULL) {
last_ai->ai_next = new_ai;
} else {
cds->cds_ai = new_ai;
}
}
socket_t server_socket (char const * host, char const * port) {
socket_t sock=INVALID_SOCKET;
struct addrinfo * info=make_addrinfo(host, port);
if (info) {
char hostname[NI_MAXHOST];
char portname[NI_MAXSERV];
if (!setnameinfo(info->ai_addr, info->ai_addrlen, hostname, portname))
goto END;
NANOLOG("server_socket [%s:%s]\n", hostname, portname);
sock=socket(info->ai_family, info->ai_socktype, info->ai_protocol);
if (sock==INVALID_SOCKET) {
NANOLOG("socket failed <%d>\n", nanonet_error());
goto END;
}
{
char const enable = '1';
if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &enable, sizeof(int))==SOCKET_ERROR) {
NANOLOG("setsockopt <%s>\n", nanonet_error_tostring(nanonet_error()));
close_socket_t(sock);
sock=INVALID_SOCKET;
goto END;
}
}
if (bind(sock, info->ai_addr, info->ai_addrlen)) {
NANOLOG("bind failed <%d>\n", nanonet_error());
close_socket_t(sock);
sock=INVALID_SOCKET;
goto END;
}
if (listen(sock, SOMAXCONN)) {
NANOLOG("listen failed <%d>\n", nanonet_error());
close_socket_t(sock);
sock=INVALID_SOCKET;
goto END;
}
} else
NANOLOG("make_addrinfo failed <%d>\n", nanonet_error());
END:
freeaddrinfo(info);
return sock;
}