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Gisle Vanem's fix that makes the multi interface work on Windows again even

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when not using ares.
This commit is contained in:
Daniel Stenberg 2004-04-13 13:59:12 +00:00
parent 804534fbc9
commit 31a693b99a
1 changed files with 28 additions and 7 deletions
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35
lib/hostip.c
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@ -137,6 +137,7 @@ struct thread_data {
HANDLE thread_hnd;
unsigned thread_id;
DWORD thread_status;
curl_socket_t dummy_sock; /* dummy for Curl_multi_ares_fdset() */
};
#endif
@ -807,23 +808,31 @@ CURLcode Curl_is_resolved(struct connectdata *conn,
#if !defined(USE_ARES)
/*
* Non-ares build.
*
* We provide this function only to allow multi.c to remain unaware if we are
* doing asynch resolves or not.
* Non-ares build. If we are using threading gethostbyname, then this must
* set the fd_set for the threaded resolve socket. If not, we just return OK.
*/
CURLcode Curl_multi_ares_fdset(struct connectdata *conn,
fd_set *read_fd_set,
fd_set *write_fd_set,
int *max_fdp)
{
#ifdef USE_THREADING_GETHOSTBYNAME
const struct thread_data *td =
(const struct thread_data *) conn->async.os_specific;
if (td && td->dummy_sock != CURL_SOCKET_BAD) {
FD_SET(td->dummy_sock,write_fd_set);
*max_fdp = td->dummy_sock;
}
#else /* if not USE_THREADING_GETHOSTBYNAME */
(void)conn;
(void)read_fd_set;
(void)write_fd_set;
(void)max_fdp;
#endif
return CURLE_OK;
}
#endif
#endif /* !USE_ARES */
#if defined(ENABLE_IPV6) && !defined(USE_ARES)
@ -1332,7 +1341,7 @@ static void trace_it (const char *fmt, ...)
return;
va_start (args, fmt);
vfprintf (stderr, fmt, args);
fflush (stderr);
/*fflush (stderr); */ /* seems a bad idea in a multi-threaded app */
va_end (args);
}
#endif
@ -1373,8 +1382,14 @@ static void destroy_thread_data (struct Curl_async *async)
{
if (async->hostname)
free(async->hostname);
if (async->os_specific)
if (async->os_specific) {
curl_socket_t sock = ((const struct thread_data*)async->os_specific)->dummy_sock;
if (sock != CURL_SOCKET_BAD)
sclose(sock);
free(async->os_specific);
}
async->hostname = NULL;
async->os_specific = NULL;
}
@ -1407,6 +1422,7 @@ static bool init_gethostbyname_thread (struct connectdata *conn,
conn->async.dns = NULL;
conn->async.os_specific = (void*) td;
td->dummy_sock = CURL_SOCKET_BAD;
td->thread_hnd = (HANDLE) _beginthreadex(NULL, 0, gethostbyname_thread,
conn, 0, &td->thread_id);
if (!td->thread_hnd) {
@ -1415,6 +1431,11 @@ static bool init_gethostbyname_thread (struct connectdata *conn,
destroy_thread_data(&conn->async);
return (0);
}
/* This socket is only to keep Curl_multi_ares_fdset() and select() happy;
* should never become signalled for read/write since it's unbound but
* Windows needs atleast 1 socket in select().
*/
td->dummy_sock = socket(AF_INET, SOCK_DGRAM, 0);
return (1);
}