Perform Network Debugging: Capture logs for specific network interfaces including Wi-Fi, Ethernet, Cellular, and Worldwide Interoperability for Microwave Access (WiMAX).įor information about how to examine ChromeOS device logs, see ChromeOS device debug logs.Store Logs: Store all device logs in a TGZ file.Import ONC file: Import an Open Network Configuration (ONC) file.View active prerender websites and their history.Ĭapture device logs that are useful for troubleshooting ChromeOS device issues. View a list of active Chrome extensions and apps. See a list of cached entries and statistics. View origin configurations, network error logging policies, and queued reports. You can enable or disable QUIC at chrome://flags/#enable-quic. This is an experimental network protocol that optimizes connection-oriented web apps that rely on TCP. View information about Quick UDP Internet Connections (QUIC). View a log of HTTP/2 sessions and alternative service mappings. View information about alternate service mappings. Use this log for advanced network troubleshooting. It also includes the time of the DNS requests. The log lists the URLs and their corresponding IPs. This can help to troubleshoot issues if webpages fail to load. View a log of DNS lookups for the device. View a graph with information, such as the number of open or in-use sockets, URL and DNS requests, or how much data has been sent or received. Events include socket connections, SPDY sessions, HTTP-TCP connections, and URL requests. If there's no proxy, you’ll see Use Direct connections. View information about the proxy settings your browser is using. Then you can view information about network events. Click choose file to import the network log and view information about network events.You can see this happening in the red bar at the top of the browser window. Open a new Chrome browser window and browse to.If you need to, you can change the file path, /tmp/mylog.json. To access this feature in Chrome, simply open the developer tools (command-option-I or command-option-J on a Mac) and select the Network option from the drop-down menu at the top. log-net-log=/tmp/mylog.json -net-log-level=0 If a problem occurs before you can browse to chrome://net-export, such as when the Chrome browser or device first starts, use the following command line flag to capture the network log: Go back to the net-export tab and click Stop logging.Open a new tab and re-create the problem.Name the file and choose where to save it.To include raw bytes (encrypted or otherwise) that were transmitted over the network, select Include raw bytes (includes cookies and credentials).If you don’t change the level of log detail, private information is stripped.(Optional) Select the level of log detail.Open a new Chrome browser window and browse to chrome://net-export/.This log file contains details of Chrome’s network-level events and state. From Chrome 58 onwards, you can use net-export to export a log file in JavaScript ® Object Notation (JSON) array format.
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