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* fhandler_socket.cc (fhandler_socket::listen): Allow listening on 

unbound INET socket.
This commit is contained in:
Corinna Vinschen 2006-07-04 20:10:43 +00:00
parent 6dbfd8f9ba
commit c2ab308c81
2 changed files with 22 additions and 3 deletions
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5
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,8 @@
2006-07-04 Corinna Vinschen <corinna@vinschen.de>
* fhandler_socket.cc (fhandler_socket::listen): Allow listening on
unbound INET socket.
2006-07-04 Corinna Vinschen <corinna@vinschen.de> 2006-07-04 Corinna Vinschen <corinna@vinschen.de>
* fhandler.h (fhandler_socket::wait): Set default timeout to INFINITE. * fhandler.h (fhandler_socket::wait): Set default timeout to INFINITE.

20
winsup/cygwin/fhandler_socket.cc
View File

@ -804,14 +804,28 @@ int
fhandler_socket::listen (int backlog) fhandler_socket::listen (int backlog)
{ {
int res = ::listen (get_socket (), backlog); int res = ::listen (get_socket (), backlog);
if (res) if (res && WSAGetLastError () == WSAEINVAL && get_addr_family () == AF_INET)
set_winsock_errno (); {
else /* It's perfectly valid to call listen on an unbound INET socket.
In this case the socket is automatically bound to an unused
port number, listening on all interfaces. On Winsock, listen
fails with WSAEINVAL when it's called on an unbound socket.
So we have to bind manually here to have POSIX semantics. */
struct sockaddr_in sa;
sa.sin_family = AF_INET;
sa.sin_port = 0;
sa.sin_addr.s_addr = INADDR_ANY;
if (!::bind (get_socket (), (struct sockaddr *) &sa, sizeof sa))
res = ::listen (get_socket (), backlog);
}
if (!res)
{ {
if (get_addr_family () == AF_LOCAL && get_socket_type () == SOCK_STREAM) if (get_addr_family () == AF_LOCAL && get_socket_type () == SOCK_STREAM)
af_local_set_cred (); af_local_set_cred ();
connect_state (connected); connect_state (connected);
} }
else
set_winsock_errno ();
return res; return res;
} }