public static void proxyHost(final String host) {
    setProperty("http.proxyHost", host);
    setProperty("https.proxyHost", host);
  }
Set the 'http.proxyHost' and 'https.proxyHost' properties to the given host
value.
<p>
This setting will apply to all requests.

@param host
lib/src/main/java/com/github/kevinsawicki/http/HttpRequest.java