public static void proxyPort(final int port) {
    final String portValue = Integer.toString(port);
    setProperty("http.proxyPort", portValue);
    setProperty("https.proxyPort", portValue);
  }
Set the 'http.proxyPort' and 'https.proxyPort' properties to the given port
number.
<p>
This setting will apply to all requests.

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