Tunnel Commandline Reference

The tunnel requires both a TestingBot Key and TestingBot Secret being passed via the commandline, except in the following cases:

If you have a .testingbot file located in your $HOME directory, then the tunnel will fetch the key and secret from this file.
If you pass the following environment variables with valid key/secret:
```
TESTINGBOT_KEY=""
```
and
```
TESTINGBOT_SECRET=""
```

-a,--auth <host:port:user:passwd>	Performs Basic Authentication for specific hosts, only works with HTTP.
-b,--nobump	Do not perform SSL bumping.
-d,--debug	Enables debug messages. Will output request/response headers.
-dns,--dns	Use a custom DNS server. For example: 8.8.8.8
--doctor	Perform sanity/health checks to detect possible misconfiguration or problems.
--extra-headers <JSON Map with Header Key and Value>	Inject extra headers in the requests the tunnel makes.
-f,--readyfile <FILE>	This file will be touched when the tunnel is ready for usage
-F,--fast-fail-regexps <OPTIONS>	Specify domains you don't want to proxy, comma separated.
-h,--help	Displays help text
-i,--tunnel-identifier <id>	Add an identifier to this tunnel connection. In case of multiple tunnels, specify this identifier in your desired capabilities to use this specific tunnel.
-j,--localproxy <port>	The port to launch the local proxy on (default 8087).
-l,--logfile <FILE>	Write logging to a file.
--metrics-port <port>	Use the specified port to access metrics. Default port 8003
-P,--se-port <PORT>	The local port your Selenium test should connect to. Default port is 4445
-p,--hubport <HUBPORT>	Use this if you want to connect to port 80 on our hub instead of the default port 4444
--pac <arg>	Proxy autoconfiguration. Should be a http(s) URL
-q,--nocache	Bypass our Caching Proxy running on our tunnel VM.
-v,--version	Displays the current version of the Tunnel
-w,--web <directory>	Point to a directory for testing. Creates a local webserver.
-x,--noproxy	Do not start a local proxy (requires user provided proxy server on port 8087)
-Y,--proxy <PROXYHOST:PROXYPORT>	Specify an upstream proxy.
-z,--proxy-userpwd <user:pwd>	Username and password required to access the proxy configured with --proxy.