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Code Issues Projects Releases Packages Wiki Activity Actions 6

Re-create the network manager every 30 seconds of not being connected

Browse source 
CURA-1851
This commit is contained in:
Jaime van Kessel 2016-08-22 14:08:01 +02:00
parent 5825793f28
commit 0c931424f9
1 changed files with 26 additions and 9 deletions
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35
NetworkPrinterOutputDevice.py
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@ -134,6 +134,8 @@ class NetworkPrinterOutputDevice(PrinterOutputDevice):
self._last_response_time = time()
self._response_timeout_time = 10
self._recreate_network_manager_time = 30 # If we have no connection, re-create network manager every 30 sec.
self._recreate_network_manager_count = 1
self._not_authenticated_message = None
self._last_command = ""
@ -227,6 +229,16 @@ class NetworkPrinterOutputDevice(PrinterOutputDevice):
## Request data from the connected device.
def _update(self):
# Connection is in timeout, check if we need to re-start the connection.
# Sometimes the qNetwork manager incorrectly reports the network status on Mac & Windows.
# Re-creating the QNetworkManager seems to fix this issue.
if self._last_response_time and self._connection_state_before_timeout:
if time() - self._last_response_time > self._recreate_network_manager_time * self._recreate_network_manager_count:
self._recreate_network_manager_count += 1
Logger.log("d", "Timeout lasted over 30 seconds, re-checking connection.")
self._createNetworkManager()
return
# Check if we have an connection in the first place.
if not self._manager.networkAccessible():
if not self._connection_state_before_timeout:
@ -246,6 +258,8 @@ class NetworkPrinterOutputDevice(PrinterOutputDevice):
pass # The disconnection can fail on mac in some cases. Ignore that.
self._progress_message.hide()
return
else:
self._recreate_network_manager_count = 1
# Check that we aren't in a timeout state
if self._last_response_time and not self._connection_state_before_timeout:
@ -282,6 +296,17 @@ class NetworkPrinterOutputDevice(PrinterOutputDevice):
print_job_request = QNetworkRequest(url)
self._manager.get(print_job_request)
def _createNetworkManager(self):
if self._manager:
self._manager.finished.disconnect(self._onFinished)
self._manager.networkAccessibleChanged.disconnect(self._onNetworkAccesibleChanged)
self._manager.authenticationRequired.disconnect(self._onAuthenticationRequired)
self._manager = QNetworkAccessManager()
self._manager.finished.connect(self._onFinished)
self._manager.authenticationRequired.connect(self._onAuthenticationRequired)
self._manager.networkAccessibleChanged.connect(self._onNetworkAccesibleChanged) # for debug purposes
## Convenience function that gets information from the received json data and converts it to the right internal
# values / variables
def _spliceJSONData(self):
@ -376,15 +401,7 @@ class NetworkPrinterOutputDevice(PrinterOutputDevice):
def connect(self):
self.close() # Ensure that previous connection (if any) is killed.
if self._manager:
self._manager.finished.disconnect(self._onFinished)
self._manager.networkAccessibleChanged.disconnect(self._onNetworkAccesibleChanged)
self._manager.authenticationRequired.disconnect(self._onAuthenticationRequired)
self._manager = QNetworkAccessManager()
self._manager.finished.connect(self._onFinished)
self._manager.authenticationRequired.connect(self._onAuthenticationRequired)
self._manager.networkAccessibleChanged.connect(self._onNetworkAccesibleChanged) # for debug purposes
self._createNetworkManager()
self.setConnectionState(ConnectionState.connecting)
self._update() # Manually trigger the first update, as we don't want to wait a few secs before it starts.