158 lines
4.8 KiB
Markdown
158 lines
4.8 KiB
Markdown
# Supported Chrome Command Line Switches
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> Command line switches supported by Electron.
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You can use [app.commandLine.appendSwitch][append-switch] to append them in
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your app's main script before the [ready][ready] event of the [app][app] module
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is emitted:
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```javascript
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const {app} = require('electron');
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app.commandLine.appendSwitch('remote-debugging-port', '8315');
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app.commandLine.appendSwitch('host-rules', 'MAP * 127.0.0.1');
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app.on('ready', () => {
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// Your code here
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});
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```
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## --ignore-connections-limit=`domains`
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Ignore the connections limit for `domains` list separated by `,`.
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## --disable-http-cache
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Disables the disk cache for HTTP requests.
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## --remote-debugging-port=`port`
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Enables remote debugging over HTTP on the specified `port`.
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## --js-flags=`flags`
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Specifies the flags passed to JS engine. It has to be passed when starting
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Electron if you want to enable the `flags` in the main process.
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```bash
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$ electron --js-flags="--harmony_proxies --harmony_collections" your-app
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```
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## --proxy-server=`address:port`
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Use a specified proxy server, which overrides the system setting. This switch
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only affects requests with HTTP protocol, including HTTPS and WebSocket
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requests. It is also noteworthy that not all proxy servers support HTTPS and
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WebSocket requests.
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## --proxy-bypass-list=`hosts`
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Instructs Electron to bypass the proxy server for the given semi-colon-separated
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list of hosts. This flag has an effect only if used in tandem with
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`--proxy-server`.
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For example:
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```javascript
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app.commandLine.appendSwitch('proxy-bypass-list', '<local>;*.google.com;*foo.com;1.2.3.4:5678')
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```
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Will use the proxy server for all hosts except for local addresses (`localhost`,
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`127.0.0.1` etc.), `google.com` subdomains, hosts that contain the suffix
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`foo.com` and anything at `1.2.3.4:5678`.
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## --proxy-pac-url=`url`
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Uses the PAC script at the specified `url`.
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## --no-proxy-server
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Don't use a proxy server and always make direct connections. Overrides any other
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proxy server flags that are passed.
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## --host-rules=`rules`
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A comma-separated list of `rules` that control how hostnames are mapped.
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For example:
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* `MAP * 127.0.0.1` Forces all hostnames to be mapped to 127.0.0.1
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* `MAP *.google.com proxy` Forces all google.com subdomains to be resolved to
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"proxy".
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* `MAP test.com [::1]:77` Forces "test.com" to resolve to IPv6 loopback. Will
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also force the port of the resulting socket address to be 77.
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* `MAP * baz, EXCLUDE www.google.com` Remaps everything to "baz", except for
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"www.google.com".
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These mappings apply to the endpoint host in a net request (the TCP connect
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and host resolver in a direct connection, and the `CONNECT` in an HTTP proxy
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connection, and the endpoint host in a `SOCKS` proxy connection).
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## --host-resolver-rules=`rules`
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Like `--host-rules` but these `rules` only apply to the host resolver.
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## --ignore-certificate-errors
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Ignores certificate related errors.
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## --ppapi-flash-path=`path`
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Sets the `path` of the pepper flash plugin.
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## --ppapi-flash-version=`version`
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Sets the `version` of the pepper flash plugin.
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## --log-net-log=`path`
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Enables net log events to be saved and writes them to `path`.
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## --ssl-version-fallback-min=`version`
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Sets the minimum SSL/TLS version (`tls1`, `tls1.1` or `tls1.2`) that TLS
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fallback will accept.
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## --cipher-suite-blacklist=`cipher_suites`
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Specifies comma-separated list of SSL cipher suites to disable.
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## --disable-renderer-backgrounding
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Prevents Chromium from lowering the priority of invisible pages' renderer
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processes.
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This flag is global to all renderer processes, if you only want to disable
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throttling in one window, you can take the hack of
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[playing silent audio][play-silent-audio].
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## --enable-logging
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Prints Chromium's logging into console.
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This switch can not be used in `app.commandLine.appendSwitch` since it is parsed
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earlier than user's app is loaded, but you can set the `ELECTRON_ENABLE_LOGGING`
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environment variable to achieve the same effect.
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## --v=`log_level`
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Gives the default maximal active V-logging level; 0 is the default. Normally
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positive values are used for V-logging levels.
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This switch only works when `--enable-logging` is also passed.
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## --vmodule=`pattern`
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Gives the per-module maximal V-logging levels to override the value given by
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`--v`. E.g. `my_module=2,foo*=3` would change the logging level for all code in
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source files `my_module.*` and `foo*.*`.
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Any pattern containing a forward or backward slash will be tested against the
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whole pathname and not just the module. E.g. `*/foo/bar/*=2` would change the
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logging level for all code in the source files under a `foo/bar` directory.
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This switch only works when `--enable-logging` is also passed.
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[app]: app.md
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[append-switch]: app.md#appcommandlineappendswitchswitch-value
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[ready]: app.md#event-ready
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[play-silent-audio]: https://github.com/atom/atom/pull/9485/files
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