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Support for falling back through the list of addresses returned from

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a DNS lookup, whether they're IPv4, v6 or a mixture of both.

[originally from svn r5119]
[this svn revision also touched putty-wishlist]
This commit is contained in:
Simon Tatham
2005-01-16 14:29:34 +00:00
parent 0f754aac82
commit f70efc5cc6
10 changed files with 648 additions and 352 deletions
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28
telnet.c
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@ -638,6 +638,22 @@ static void do_telnet_read(Telnet telnet, char *buf, int len)
}
}
static void telnet_log(Plug plug, int type, SockAddr addr, int port,
const char *error_msg, int error_code)
{
Telnet telnet = (Telnet) plug;
char addrbuf[256], *msg;
sk_getaddr(addr, addrbuf, lenof(addrbuf));
if (type == 0)
msg = dupprintf("Connecting to %s port %d", addrbuf, port);
else
msg = dupprintf("Failed to connect to %s: %s", addrbuf, error_msg);
logevent(telnet->frontend, msg);
}
static int telnet_closing(Plug plug, const char *error_msg, int error_code,
int calling_back)
{
@ -649,10 +665,10 @@ static int telnet_closing(Plug plug, const char *error_msg, int error_code,
notify_remote_exit(telnet->frontend);
}
if (error_msg) {
/* A socket error has occurred. */
logevent(telnet->frontend, error_msg);
connection_fatal(telnet->frontend, "%s", error_msg);
} /* Otherwise, the remote side closed the connection normally. */
}
/* Otherwise, the remote side closed the connection normally. */
return 0;
}
@ -685,6 +701,7 @@ static const char *telnet_init(void *frontend_handle, void **backend_handle,
int nodelay, int keepalive)
{
static const struct plug_function_table fn_table = {
telnet_log,
telnet_closing,
telnet_receive,
telnet_sent
@ -734,13 +751,6 @@ static const char *telnet_init(void *frontend_handle, void **backend_handle,
/*
* Open socket.
*/
{
char *buf, addrbuf[100];
sk_getaddr(addr, addrbuf, 100);
buf = dupprintf("Connecting to %s port %d", addrbuf, port);
logevent(telnet->frontend, buf);
sfree(buf);
}
telnet->s = new_connection(addr, *realhost, port, 0, 1,
nodelay, keepalive, (Plug) telnet, &telnet->cfg);
if ((err = sk_socket_error(telnet->s)) != NULL)