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[svn] Document test_socket_open.

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This commit is contained in:
hniksic 2005-07-03 17:55:12 -07:00
parent debec8216f
commit 3d66119d34
1 changed files with 13 additions and 4 deletions
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17
src/connect.c
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@ -638,6 +638,17 @@ select_fd (int fd, double maxtime, int wait_for)
return result;
}
/* Return true iff the connection to the remote site established
through SOCK is still open.
Specifically, this function returns true if SOCK is not ready for
reading. This is because, when the connection closes, the socket
is ready for reading because EOF is about to be delivered. A side
effect of this method is that sockets that have pending data are
considered non-open. This is actually a good thing for callers of
this function, where such pending data can only be unwanted
leftover from a previous request. */
bool
test_socket_open (int sock)
{
@ -656,10 +667,8 @@ test_socket_open (int sock)
/* If we get a timeout, then that means still connected */
if (select (sock + 1, &check_set, NULL, NULL, &to) == 0)
{
/* Connection is valid (not EOF), so continue */
return true;
}
/* Connection is valid (not EOF), so continue */
return true;
else
return false;
}