On 3 Mag, 05:38, Roy Smith <[EMAIL PROTECTED]> wrote:
> In the application I work on, we've avoided this. We just listen on two
> separate sockets (one for each address family). We wrote a DualSocket
> class which manages the two underlying single-protocol sockets and makes
> them appear to be a single dual-protocol socket. It was a lot of user code
> to write, compared with using the mapped address mechanism, but at least
> it's portable to every OS we've seen that support IPv6.
>
> You don't need multi-threading to handle multiple sockets. In our
> implementation, for example, we use select() in a single thread to
> multiplex the two.
I would be very interested in taking a look at how you implemented
that part of code. Would it be possible?
For now I wrote this and it seems to work just fine.
Any advice about it?
class FTPServer(asyncore.dispatcher):
def __init__(self, address, handler):
"""Initiate the FTP server opening listening on address.
- (tuple) address: the ip:port pair on which to listen
for ftp data connections.
- (classobj) handler: the handler class to use.
"""
asyncore.dispatcher.__init__(self)
self.handler = handler
host, port = address
for res in socket.getaddrinfo(host, port, 0,
socket.SOCK_STREAM):
af, socktype, proto, canonname, sa = res
try:
self.create_socket(af, socket.SOCK_STREAM)
except socket.error, msg:
if self.socket:
self.socket.close()
self.socket = None
continue
break
if not self.socket:
raise socket.error, msg
self.address_family = af
if os.name not in ('nt', 'ce'):
self.set_reuse_addr()
self.bind(address)
self.listen(5)
def handle_accept(self):
sock_obj, addr = self.accept()
log("[]%s:%s Connected." %addr[0:2])
handler = self.handler(sock_obj, self)
--- Giampaolo
http://code.google.com/p/pyftpdlib/
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