Develop Reference

How can Android Emulator reach server on local network?

I want to connect to a server on my local network (10.134.0.178:80). The ip address of my machine is 10.134.3.12 and the ip address of the emulator Wi-Fi is 192.168.232.2.
Now I found out that you have to use 10.0.2.2 to connect to a server on your local machine. But the server isn't running on my local machine - instead it is a separate instace on my LAN.
My local machine can reach and ping the server without problems. The emulator not, but the emulator has internet access. So I can access e.g. www.google.com.
How can I connect the emulator with the server? The shown redirection rules only apply on port level. So how is this meant to be used? Other solutions only talk about a local server. Only one is talking about a similar case, but this is not working for me (no connection)
netsh interface portproxy add v4tov4 listenport=80 connectport=80 connectaddress=10.134.0.178
Additionally, I have to switch server instances (different ips/ports/addresses). So how can I use the Android Emulator in this case? To which address should the webservice calls be made? 10.0.2.2 or 10.134.0.178?

Hmmm, well, your Android app should connect to the server's address/port as it appears to the host machine running the Android emulator. I have a web server on my LAN and my emulator can access it directly. Start with pointing Chrome in your emulator at a web server on your LAN (assuming you have one on there somewhere) - if the server is on 10.134.0.178:80 then just type 10.134.0.178 in to your Chrome address bar. If that's not working then you need to look and see what's stopping it - any redirection rules getting in the way?

Don't know what the reason was, but the most plausible one is, that the server had a temporal issue. Now I can connect to my server without further changes!
One thing what still didn't work for me was ping, but it is listed under Local networking limitations:
Depending on the environment, the emulator might not be able to support other protocols (such as ICMP, used for "ping"). Currently, the emulator does not support IGMP or multicast.

How can i access my localhost XAMP server from my Android mobile?

When i run my project on Emulator than localhost servery is working but when run on real Android phone than localhost server not found. So how can i access my localhost server from my real Android Device. I use XAMP server.

You cannot access localhost from your mobile device because the server is limited to your system only. In order to test the application you have to run the application on emulator so that it could find the server. Although there is a way...if you are creating a whole server that is backend and you have a network to which your mobile and system is connected then you can set your server to listen to a port on that network. I used NodeJs to accomplish that. You can search some tutorials for using NodeJs through which you can access you xampp server. You can also try AdonisJs which is a framework for NodeJs for a better approach. But keep in mind that you need a common network through which your system and your mobile device is connected. It is a bit complicated method but yes that can work. Accessing localhost directly from system to your mobile device is not possible..if you want to avoid learning NodeJs then you'll have to keep using emulator for the testing but learning something new is always amazing. So i would suggest you to learn NodeJs . Anyways you can avoid all the trouble and keep testing your application using your emulator. I hope this answer will help you :)

You should have told which ip you used running on emulator.
Your client on the android device should use the ip of the computer where your server is running on.
Android device and server computer in same WLAN.

If your computer and mobile are connected through same internet line then you can use ip of your computer instead of localhost can do the work.

You cannot access the local host server from a different node eventhough both nodes are connected to same network only way is that change the ip configuration of server to 0.0.0.0: so that you can access the server from any node just by typing the ip of the server followed by port no...

Android Simulator how does it connect to local IP addresses?

I am trying to implement an Android application in Windows 7 using Eclipse. I am trying to connect the Android simulator to the local test server in my company, but for some reason, it cannot connect to the test server.
If there is any settings or configurations for this, please let me know.
I have tried to do the same from a MAC machine using iPhone emulator and I am facing the same problem. How would this emulator connect to the local servers in my company as currently it all goes to live servers? What configurations are required to be done on the simulators, and how?
If I try to connect to the test server from normal Windows machine browser, I am able to successfully connect to it through the web browser; but when I try to do the same from the Android emulator browser, it cannot connect to it.
The emulator points to the live network and not the local network in my company. This is strange and I know that I need to do some settings for it, but I am not sure where these settings are done and how.

If accessing local computer:
http://localhost:8080/MyLocalServer.html // URL to use in computer browser
http://10.0.2.2:8080/MyLocalServere.html // URL to use in emulator browser
Also try using a local IP to connect to any local servers. Do not use host names.
Dont:
http://mylocalserver.org/
Do:
http://192.168.1.125:portnumber
You have to set up IP-based hosts instead of name-based.

Emulator its - VM. This use virtual network connection. I think you need before chech this connection (this connection may bee stay as NAT, Breedge, Native IP adress, Proxy).
Since you do not work iPhone emulator, most likely you, IP adress virtual network connectionб which uses Emulator, does not match the address area of the local network, and routing occurs

This may help you...
Taken from the android docs:
If you need to refer to your host computer's localhost, such as when you want the emulator client to contact a server running on the same host, use the alias 10.0.2.2 to refer to the host computer's loopback interface. From the emulator's perspective, localhost (127.0.0.1) refers to its own loopback interface.
http://developer.android.com/guide/faq/commontasks.html#localhostalias

worklight server root URL fial to connect in android device

I try to deploy a worklight application into my android device (HTC Desire), without any hope I get the following error:-
Request timeout for [ANDROID IP :8080/console/apps/services
Default options: on failure timed out for
http://ANDROIDIP:8080/console/apps/services...
Make sure the host address is available to the app (especially relevant for android and iphone apps]
I find my android IP address via whatip.com and I configure my application descriptor xml file with it.
it works with android emulator when I use the following
<worklightServerRootURL>http://10.0.2.2:8080</worklightServerRootURL>
but not with the mobile device
any advice?

worklightServerRootURL should point to the public IP address of the host machine, not to the device IP.
The device and Worklight Server must be in the same network (public Internet, wifi...).

10.0.2.2 is a special address that only works on the android emulator. On the emulator, it is routed to the host where the emulator is running. On an actual device, this address won't be routed anywhere.
As Idan said, the Worklight server must be reachable from the Android device. This usually means that either the Worklight server has an address that is reachable from the internet, or that the android device has a wifi connection to the LAN where the worklight server is running.
Assuming that you are trying to test using the test server in worklight studio, first determine your computer's IP address. If you are behind a NAT router, whatip.com returns the IP of the router, not of your computer. Use ifconfig (ipconfig on windows) at a command line to determine your computer's IP address. Your computer may have several IP addresses. It is important that you choose the ones that corresponds to the LAN where you will be connecting your Android device. If you are unsure which one this is, you may need to look at your router's configuration. Next, verify that your computer's firewall has port 8080 open. Then connect your android device via wifi to the same LAN as your computer.
To verify that your device can reach the worklight server, try opening the worklight console in the phone's browser. (http://[IP of computer]:8080/console) Once that works, you should be able to use the same IP in the worklightServerRootURL to build the app so that it will work on that device.

how can an android emulator contact the host developing machine in eclipse?

I have a normal simple java program running as a server, waiting for a client to connect with TCP.
On another eclipse project, i'm building an android application. That application has to contact the java program running on the host machine to receive a message.
I can't simply use "localhost" to contact the server becouse, supposedly, the emulator runs behind a virtual router and i'll be accessing the "phone"'s network instead of the host machine's network.
So, what ip should I use to contact the host development machine?
The machine is a linux running on a VirtualBox with an Ip of 10.0.0.5.
I've tried to use that ip on the emulator but even so, I can't establish a connection.

I think you want 10.0.2.2. Check out the Android Emulator Networking documentation:
https://developer.android.com/studio/run/emulator-networking.html

I believe you need to enable port forwarding in order to use any kind of network connection in the emulator. You can do this with the adb tool. Check the Android Developer Guides for details.