I have a Tomcat server running on Localhost. My app can access it in the emulator using 10.0.0.2:8080. But when I connect a device it can't access the server.
I've seen some similar questions but couldn't get this working. can someone give me the steps on what to do?
we use 10.0.2.2:8081 because 127.0.0.1 is reserved for the emulator, however, when you need to try the application through a real device you need to change the URL to your PC IP
go to CMD and run ipconfig, look for IPv4 address, this IP you will use it..
add it to the URL for example: http://192.somethin.somthin.somthing:8081/the-location.php
P.S: you should set your firewall off and turn off any antivirus
The device may not be on the same network as the Tomcat server. Does your network provide VPN access? If so, try installing an Android VPN client (Junos Pulse is a good free one). Connect your device to VPN and try again.
10.0.0.2 looks like an internal address. The emulator is likely able to connect because the machine on which it is running is connected to the network. The actual device needs a direct connection as well. VPN should solve that.
Related
I try to browse localhost on my HTC Magic. I have connected my device with Eclipse via USB. When browsing http://10.0.2.2 I get "Page not available". I remember, some days ago it worked.
But on the emulator I am able to browse localhost
Any ideas?
Easier way to check is in browser of emulator type 10.0.2.2 instead of localhost.
I use my local ip for that i.e. 192.168.0.1 and it works.
to access localhost on emulator: 10.0.2.2. However this may not always work for example if you have something other than a web server such as XMPP server.
assuming that you're on the same wireless network...
find your local ip (should be something 192.168.1.x) - go to the command line and type 'ipconfig' to get this. where x is the assigned local ip of the server machine.
use your local ip for your android device to connect to your localhost.
it worked for me.
If you want to access a server running on your PC from your Android device via your wireless network, first run the command ipconfig on your PC (use run (Windows logo + R), cmd, ipconfig).
Note the IPv4 address: (it should be 192.168.0.x) for some x. Use this as the server IP address, together with the port number, e.g. 192.168.0.7:8080, in your code.
Your Android device will then access the server via your wireless network router.
I needed to see localhost on my android device as well (Samsung S3) as I was developing a Java Web-application.
By far the fastest and easiest way is to go to this link and follow instructions: https://developer.chrome.com/devtools/docs/remote-debugging
* Note: You have to use Google Chrome.*
My summary of the above link:
Connect PC with Phone over USB.
Turn on Phone's "Developer options" from Settings
Go to about:inspect URL in PC's browser
Check "Discover USB Devices" (forward Ports if you are using them in your web-application)
Copy/paste localhost required link to text field in browser and click Open.
Piece of cake
You can get a public URL for your server running on a specific port on localhost.
At my work place I could access the local server by using the local IP address of my machine in the app, as most of the other answers suggest. But at home I wasn't able to do that for some reason. After trying many answers and spending many hours, I came across https://ngrok.com. It is pretty straight forward. Just download it from within the folder do:
ngrok portnumber
( from command prompt in windows)
./ngrok portnumber
(from terminal in linux)
This will give you a public URL for your local server running on that port number on localhost. You can include in your app and debug it using that URL.
You can securely expose a local web server to the internet and capture all traffic for detailed inspection. You can share the URL with your colleague developer also who might be working remotely and can debug the App/Server interaction.
Hope this saves someone's time someday.
Combining a few of the answers above plus one other additional item solved the problem for me.
As mentioned above, turn your firewall off [add a specific rule allowing the incoming connections to the port once you've successfully connected]
Find you IP address via ipconfig as mentioned above
Verify that your webserver is binding to the ip address found above and not just 127.0.0.1. Test this locally by browsing to the ip address and port. E.g. 192.168.1.113:8888. If it's not, find a solution. E.g. https://groups.google.com/forum/?fromgroups=#!topic/google-appengine-java/z4rtqkKO2hg
Now test it out on your Android device. Note that I also turned off my data connection and exclusively used a wifi connection on my Android.
Mac OSX Users
If your phone and laptop are on the same wifi:
Go to System Preferences > Network to obtain your IP address
On your mobile browser, type [your IP address]:3000 to access localhost:3000
e.g. 12.45.123.456:3000
If your localhost is not running on the default HTTP port(which is port 80), you need to specify the port in your url to something that corresponds to the port on which your localhost is running. E.g. If your localhost is running on, say port 85, Your url should be
http://10.0.2.2:85
For the mac user:
I have worked on this problem for one afternoon until I realized the Xampp I used was not the real "Xampp" It was Xampp VM which runs itself based on a Linux virtual machine. That made it not running on localhost, instead, another IP. I installed the real Xampp and run my local server on localhost and then just access it with the IP of my mac.
Hope this will help someone.
If your firewall is on, turn it off and use IPv4 to test your app in the actual device, then test your application.
I had similar issue but I could not resolve it using static ip address or changing firewall settings. I found a useful utility which can be configured in a minute.
We can host our local web server on cloud for free. On exposing it on cloud we get a different URL which we can use instead of localhost and access the webserver from anywhere.
The utility is ngrok https://ngrok.com/download
Steps:
Signup
Download
Extract the file and double click to run it, this will open a command prompt
Type "ngrok.exe http 80" without quotes to host for example XAMPP apache server which runs on port 80.
Copy the new url name generated on the cmd prompt for e.g. if it is like this "fafb42f.ngrok.io"
URL like : http://localhost/php/test.php
Should be modified like this : http://fafb42f.ngrok.io/php/test.php
Now this URL can be accessed from phone.
I use testproxy to do this.
npm install testproxy
testproxy http://10.0.2.2
You then get the url (and QR code) you can access on your mobile device. It even works with virtual machines you can't reach by just entering the IP of your dev machine.
I used ngrok but now it need registration and it also has a connections request limit. Now I'm using LocalTunnel and so far it's much better.
i am using Genymotion emulator which is the most great emulator and the fastest ever, but i am trying to connect to the local host of my computer since morning, i tried both 192.168.1.30 (taken by cmd>ipconfig>ipv4) and 192.168.56.1 which is used by many genymotion users as they mentioned.. but all what i am getting is this message on the emulator's browser:
Forbidden
you don't have permission to access/ on this server
it seems like its a matter of permission, some thing related to Wamp server configuration, or may be to firewall or any thing, i just need to create this connection simply..
On an Emulator you can access localhost on http://10.0.2.2/you_php_script.php
You'll want to connect to 192.168.56.1.
Make sure that the service that you are running on localhost is bound to the 192.168.56.1 interface.
Make sure that you do not have a firewall running.
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
i have in my laptop in virtualbox a UbuntuServer with a webservice at ip: 192.168.1.46, and webservice, ServerName is api.webservice, so from my laptop if i try in the browser api.webservice it works well!.
Now the problem, from the android device not work, the webservice,laptop and device are connect in the same network, from the device if i try in the browser 192.168.1.46, it tell me it works, but if i try api.webservice not work..
there are any solution?
Probably this is a problem with name resolution.
Your laptap (Windows?) is able to resolve "api.webservice", but your Android device not.
It highly depends on your infrastructure (WLAN-Router, DHCP-Server) how to solve this problem. You could perhaps provision your WLAN-Router/DHCP-Server to permanently bind api.webservice to the IP address of your Ubuntu box, so Android device can make a NS-lookup.
I suppose your Android app will connect a real Internet server in future. In this case, I wouldn't bother connecting the webservice by IP-address for test purposes.
When your app is published and used outside your local network, name resolution will work when connecting to a internet server registered in "official" DNS.
Situation: on PC installed server, and available address with this site: http://localhost
And installed Connectify Hotspot to share internet via wi-fi.
Also, I have android-device from which I need visit localhost on my PC. Via wi-fi is not principal.
How I can do this? I have read a lot of instructions, but they are for AVD (through 10.0.2.2), that I could do, but not with real device.
I made it.
Disable firewall while you testing connection.
Define your wi-fi IP-address by ipconfig.
On local server you need to create folder with this IP-address and put in this folder site or something, you want to open through wi-fi on mobile.
example: 192.168.77.1/www/index.php
Restart your server. After this you will be able to access to your site in PC-browser by your wi-fi IP-address. If not - restart server another once, or something going wrong :)
Turn on mobile wi-fi and in browser try to access to wi-fi IP-address.
Profit.
localhost on the device refers to the device itself, not to your computer. Get your computers IP address (ifconfig on linux or mac systems) and use this instead of localhost.