[jira] [Created] (WHIRR-730) Use the InetAddress.getLocalHost() instead of URL("http://checkip.amazonaws.com/") to get the local address

[Songping Lv (JIRA)]

Songping Lv created WHIRR-730:
---------------------------------

             Summary: Use the InetAddress.getLocalHost() instead of 
URL("http://checkip.amazonaws.com/";) to get the local address
                 Key: WHIRR-730
                 URL: https://issues.apache.org/jira/browse/WHIRR-730
             Project: Whirr
          Issue Type: Improvement
          Components: core
    Affects Versions: 0.8.2
         Environment: Unbuntu, Openstack
            Reporter: Songping Lv
             Fix For: 0.9.0


Hi,all

I have found the FirewallManager.getOriginatingIp() use the following method to 
get the ip address
{code:title=Bar.java|borderStyle=solid}
  /**
   * @return the IP address of the client on which this code is running.
   * @throws IOException
   */
  private String getOriginatingIp() throws IOException {
    if ("stub".equals(clusterSpec.getProvider())) {
      return "62.217.232.123";
    }

    URL url = new URL("http://checkip.amazonaws.com/";);
    HttpURLConnection connection = (HttpURLConnection) url.openConnection();
    connection.connect();
    return IOUtils.toString(connection.getInputStream()).trim() + "/32";
  }
{code}

I think we should use the InetAddress.getLocalHost() to get the ipaddress, 
here's some of my reason:
1). I think it is illegal for an application to get the client ip address 
throght the erternal website, what else if the amazon is broken and we can 
access the http://checkip.amazonaws.com/ or if the situation of the internet 
can't worked well, it will be failed to launch the cluster because we can't 
connect to the http://checkip.amazonaws.com/.

2). If any of the private company want to reuse the whirr project to create the 
cluster, Some of the company need to use the proxy to access the external 
website, Although the whirr project support to config the proxy, but it is 
still complicated for us to apply for the IT Department to authorize the proxy 
for the VM we have created by the whirr.

3). I think it is simple to use the InetAddress.getLocalHost() to get the local 
ip address

Thanks

-Jeremy Lv

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