def on_reply_ready(reply, future): # type: (QNetworkReply, Future) -> None nonlocal n_redir # schedule deferred delete to ensure the reply is closed # otherwise we will leak file/socket descriptors reply.deleteLater() future._reply = None if reply.error() == QNetworkReply.OperationCanceledError: # The network request was cancelled reply.close() future.cancel() return if _log.level <= logging.DEBUG: s = io.StringIO() print("\n", reply.url(), file=s) if reply.attribute(QNetworkRequest.SourceIsFromCacheAttribute): print(" (served from cache)", file=s) for name, val in reply.rawHeaderPairs(): print(bytes(name).decode("latin-1"), ":", bytes(val).decode("latin-1"), file=s) _log.debug(s.getvalue()) if reply.error() != QNetworkReply.NoError: # XXX Maybe convert the error into standard # http and urllib exceptions. future.set_exception(Exception(reply.errorString())) reply.close() return # Handle a possible redirection location = reply.attribute( QNetworkRequest.RedirectionTargetAttribute) if location is not None and n_redir < 1: n_redir += 1 location = reply.url().resolved(location) # Retry the original request with a new url. request = QNetworkRequest(reply.request()) request.setUrl(location) newreply = self._netmanager.get(request) future._reply = newreply newreply.finished.connect( partial(on_reply_ready, newreply, future)) reply.close() return reader = QImageReader(reply) image = reader.read() reply.close() if image.isNull(): future.set_exception(Exception(reader.errorString())) else: future.set_result(image)
def on_reply_ready(reply, future): nonlocal n_redir # schedule deferred delete to ensure the reply is closed # otherwise we will leak file/socket descriptors reply.deleteLater() future._reply = None if reply.error() == QNetworkReply.OperationCanceledError: # The network request was cancelled reply.close() future.cancel() return if reply.error() != QNetworkReply.NoError: # XXX Maybe convert the error into standard # http and urllib exceptions. future.set_exception(Exception(reply.errorString())) reply.close() return # Handle a possible redirection location = reply.attribute( QNetworkRequest.RedirectionTargetAttribute) if location is not None and n_redir < 1: n_redir += 1 location = reply.url().resolved(location) # Retry the original request with a new url. request = QNetworkRequest(reply.request()) request.setUrl(location) newreply = self._netmanager.get(request) future._reply = newreply newreply.finished.connect( partial(on_reply_ready, newreply, future)) reply.close() return reader = QImageReader(reply) image = reader.read() reply.close() if image.isNull(): future.set_exception(Exception(reader.errorString())) else: future.set_result(image)