I am currently working for two customers at three different locations (and at home). And the proxy settings differ at every location! Sometimes I have to switch from the internal network (with proxy) to my iPhone HotSpot and then back again.
Each time I have to change my proxy settings for
I tried to use a local proxy, but had some problems with Outlook (for OS X).
So I ended up creating a small shell script that checks for the proxy settings in OS X and patch Maven’s
settings.xml and the git configuration (as well as setting the environment variable
http_proxy). It has served me well in the last weeks, so I wanted to share it.
Determining the current default network
You can have multiple active network interfaces (e.g. “Wi-Fi” and your iPhone), but one is the ‘default’ interface, which you can determine with:
route -n get default
this gives you the network interface, e.g. ‘en0’.
But for the following steps I need the network service name, i.e. “Wi-Fi”, so we need to call
which produces something like:
(1) Wi-Fi (Hardware Port: Wi-Fi, Device: en0) (2) iPhone (Hardware Port: iPhone USB, Device: en5)
I have to grep for the “Device” (and then get the previous line, etc.).
After all this I have the default network service name.
Determining the proxy
explicit proxy settings
If the host and port of the proxy are set explicitely, I can retrieve the sttings with
networksetup -getwebproxy "<network service name>"
The above statement prints something like:
Enabled: Yes Server: 10.2.58.17 Port: 8080 Authenticated Proxy Enabled: 0
But if I have a
proxy.pac configured, I need to call
networksetup -getautoproxyurl Wi-Fi
which returns the URL for the
Configuring Git, Maven, etc.
When I have the PROXY_HOST and the PROXY_PORT, I can set some environment variables and tell git to use the proxy:
git config --global http.proxy "http://$PROXY_HOST:$PROXY_PRT"
Maven proxy settings
The proxy settings for Maven are located in
I have created a simple entry for the proxy, the id must be “env-proxy”:
<proxies> <proxy> <id>env-proxy</id> <active>false</active> <protocol>http</protocol> <host>proxy</host> <port>8080</port> </proxy> </proxies>
This whole block is replaced by the correct settings with the active-flag switched to true.
Invoking the script when no proxy can be determined removes/deactivates the proxy settings (git, Maven’s settings.xml and environment variables)
- install pacparser
- clone https://github.com/vrvolle/proxy-settings-osx.git
- put the scripts in a directory in your PATH
- make them executable
- add a proxy entry “env-proxy” to your settings.xml
To invoke the script, you must
source it. Otherwise the environment variables will not be set: