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[svn] Document the side effect of test_socket_open.

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hniksic 2005-07-02 06:22:13 -07:00
parent a41c753675
commit 79a8def8c8
1 changed files with 8 additions and 2 deletions
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10
src/http.c
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@ -1009,11 +1009,17 @@ persistent_available_p (const char *host, int port, bool ssl,
}
/* Finally, check whether the connection is still open. This is
important because most server implement a liberal (short) timeout
important because most servers implement liberal (short) timeout
on persistent connections. Wget can of course always reconnect
if the connection doesn't work out, but it's nicer to know in
advance. This test is a logical followup of the first test, but
is "expensive" and therefore placed at the end of the list. */
is "expensive" and therefore placed at the end of the list.
(Current implementation of test_socket_open has a nice side
effect that it treats sockets with pending data as "closed".
This is exactly what we want: if a broken server sends message
body in response to HEAD, or if it sends more than conent-length
data, we won't reuse the corrupted connection.) */
if (!test_socket_open (pconn.socket))
{