[appengine-java] Re: How to get IP address of Appengine running my java servlet page
Hi, check out class java.lang.System: you can get various system properties. didier On Mar 29, 4:30 pm, "powell...@gmail.com" wrote: > I am trying to get a sense of where (location) the Appengine is > running my servlet to show how the cloud runs my servlet in different > locations. I have tried to use request.getLocalAddr() but get back > null. I tried getServletContext().getServerInfo() but did not get back > an IP address. Any ideas? > > Dave -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
[appengine-java] Re: How to get IP address of Appengine running my java servlet page
Hi Dave, A very straightforward solution: call getHardwareAddress() of java.net.NetworkInterface. NetworkInterface is part of the JRE class white list for GAEJ: http://code.google.com/appengine/docs/java/jrewhitelist.html This way, you get the MAC address of the network card of the machine. This MAC address is unique worldwide. So, you can distinguish the various machines that you are running on. regards didier On Mar 29, 7:57 pm, Jeff Schnitzer wrote: > It seems quite unlikely that GAE appservers are going to have public > IP addresses. Even if you can get the IP address of the host (and I > suspect this is impossible), it's going to be a private address. > > The best you will probably be able to do is get the NATed apparent > address of the URLFetch servers. Make a URLFetch request to a server > you run somewhere and check the source IP address in the logs. > > This isn't necessarily a good piece of data, though. For one, this is > simply going to be an outbound public IP. The request could have been > routed around the world through Google's private network before it > found an outbound node. For another, it's going to come from the > URLFetch service... and there is no guarantee that the URLFetch server > is the same box (or even located anywhere near) the box your app runs > on. > > It's an opaque system - deliberately so. > > Jeff > > On Mon, Mar 29, 2010 at 9:43 AM, Didier Durand > wrote: > > Hi, check out class java.lang.System: you can get various system > > properties. > > didier > > > On Mar 29, 4:30 pm, "powell...@gmail.com" wrote: > >> I am trying to get a sense of where (location) the Appengine is > >> running my servlet to show how the cloud runs my servlet in different > >> locations. I have tried to use request.getLocalAddr() but get back > >> null. I tried getServletContext().getServerInfo() but did not get back > >> an IP address. Any ideas? > > >> Dave > > > -- > > You received this message because you are subscribed to the Google Groups > > "Google App Engine for Java" group. > > To post to this group, send email to google-appengine-j...@googlegroups.com. > > To unsubscribe from this group, send email to > > google-appengine-java+unsubscr...@googlegroups.com. > > For more options, visit this group > > athttp://groups.google.com/group/google-appengine-java?hl=en. -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
Re: [appengine-java] Re: How to get IP address of Appengine running my java servlet page
It seems quite unlikely that GAE appservers are going to have public IP addresses. Even if you can get the IP address of the host (and I suspect this is impossible), it's going to be a private address. The best you will probably be able to do is get the NATed apparent address of the URLFetch servers. Make a URLFetch request to a server you run somewhere and check the source IP address in the logs. This isn't necessarily a good piece of data, though. For one, this is simply going to be an outbound public IP. The request could have been routed around the world through Google's private network before it found an outbound node. For another, it's going to come from the URLFetch service... and there is no guarantee that the URLFetch server is the same box (or even located anywhere near) the box your app runs on. It's an opaque system - deliberately so. Jeff On Mon, Mar 29, 2010 at 9:43 AM, Didier Durand wrote: > Hi, check out class java.lang.System: you can get various system > properties. > didier > > On Mar 29, 4:30 pm, "powell...@gmail.com" wrote: >> I am trying to get a sense of where (location) the Appengine is >> running my servlet to show how the cloud runs my servlet in different >> locations. I have tried to use request.getLocalAddr() but get back >> null. I tried getServletContext().getServerInfo() but did not get back >> an IP address. Any ideas? >> >> Dave > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine for Java" group. > To post to this group, send email to google-appengine-j...@googlegroups.com. > To unsubscribe from this group, send email to > google-appengine-java+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/google-appengine-java?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
