Enabling Net Logging

Overview

A NetLog dump is a log file of network-level events and states.  You may be asked to provide this log when experiencing page load or performance problems. 

NOTE: In order for the net-log to write successfully to the JSON file, the application must be closed completely. 

Solution

• Add the following flag to the runtime arguments within the application manifest and specify the folder where it will be saved:

--log-net-log=c:\\someDirectory\\net.json --net-log-capture-mode=Everything

• You are then able to import the log created via https://netlog-viewer.appspot.com/#import
• Alternatively, the setting can be applied to a single user via the system registry:

HKCU\software\openfin\rvm\runtimeArgs = '--log-net-log=c:\\someDirectory\\net.json --net-log-capture-mode=Everything'

• Adding --log-net-log directly to a shortcut's Target field works differently than other runtime args. For a shortcut you need to pass it via the --runtime-arguments flag on OpenFinRVM.exe, not as a bare appended argument. The correct shortcut Target format is: 

C:\...\OpenFinRVM.exe --config=http://someurl.com/manifest.fin.json --runtime-arguments="--log-net-log=c:\\someDirectory\\net.json --net-log-capture-mode=Everything"

Key points:

• The net log args go inside --runtime-arguments="..." as a quoted string

Further information on how to apply runtime arguments can be found here: https://openfin.zendesk.com/hc/en-us/articles/360030825612-Configuring-Runtime-Arguments

Further information on how to enable NetLog dumps, please refer to this article: https://www.chromium.org/for-testers/providing-network-details/