it is my second time asking a question on stackoverflow. I'm trying to access to my local apache server that I've set up on my desktop computer (ip that starts with ie. 192.168.1*.**)on my android phone. but somehow it does not allow me to access to the server at all! :( strangely, sometimes it does allow me to access to the server lol! but it's only one out of 20 for each attempts. Also, it doesn't allow me to access to the server on my laptop either.. I really need some help guys.. it was working fine when i was working locally within my desktop pc by using emulator. I've done quite a lot of research about it but i wasn't able to find any solutions.
Thank you guys
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ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
HttpClient client = new DefaultHttpClient(setHttpParams());
HttpPost request = new HttpPost(PATH + FILENAME);
if (json != null) {
request.setEntity(new ByteArrayEntity(json.toString().getBytes("UTF8")));
request.setHeader("json", json.toString());
} else {
request.setEntity(new UrlEncodedFormEntity(nameValuePairs));
}
HttpResponse response = client.execute(request);
so that is the code, error occurs when it tries to execute the request. request includes the apache server ip PATH (192.168.**) + FILE_NAME(ie. index.php). I know why it causes the error because i cannot access to the 192.168.* server and read the desired file. I need help with this =(
For the computer running the webserver:
Make sure that your personal firewall rules are not preventing access to the web server.
For your phone to access the webserver over the air the server needs to be accessible from the web. It could be that your machine is behind a corporate firewall which is preventing access to it from external sources.
If you simply want to access it from the phone, make sure that both the webserver and phone are on the same network i.e. they have IP addresses from the same address range. You can do that by connecting your machine to wireless AP (either via ethernet or wireless) and making sure that your phone is connected to the same wireless AP.
Moreover I just read your question again and noticed the line
it does not allow access to to the server on my laptop either
If you cannot access the webserver locally on the machine it is runnning on then there is something wrong in the way you configured your web server.
So first make sure that your web server is running and configured properly. Open a browser and go to http://localhost or http://192.168.x.x if everything is configured right you will be able to access your web pages.
Basically this is networking 101, if it is still giving you problem post some details such as what webserver, what port etc.
If you are new to networking concepts and don't know how to configure a web server say Apache just Google how to configure Apache or use something called XAMPP which is a developer friendly bundle containing Apache, MySQL, PHP, FileZilla etc. Note that XAMPP shall never be used in a production environment as its default configuration is done in a way to make it easier to install, configure and run above mentioned packages for new users.
Related
I am developing a tablet application which needs to connect to a web site to collect online content.
I have seen that we can indeed connect to a web server on a local system by addressing it via it's IP address.
However, I am using virtual hosts on my system, so as to use virtual domains.
This is setup on my system in the apache httpd-vhosts.conf file like this -
#
# Project wordpress dev site
#
<VirtualHost *:80>
DocumentRoot "C:/web/www/boutique"
ServerName boutique.project.dev
</VirtualHost>
with my hosts file having the following entry
127.0.0.1 boutique.project.dev # project woocommerce site
I am using the HttpPost and HttpClient classes and I cannot see how I can provide the real IP address whilst still transmitting the host name in the URL request.
So, what I need to know is how can I make queries from my application using the virtual address " boutique.project.dev " ?
Is this possible ?
Edit :
Following one comment, I need to make things more clearer.
I am wanting to do this in code. Each time we make a connection to a site, the URL does a DNS lookup to determine the IP address to use. I need to intercept this and provide the IP address of my local system. I have seen some examples for proxy's using HttpHost, but I am unclear as to how to use this or even if it is relevant.
I think you don't do that unless you modify host file in android device (with root permissions)
This is a similar question: Apache Virtual Host (Subdomain) access with different computer on LAN
You also could setup a DNS server in your computer (i.e bind9) and set entries for your apache virtualhost and configure android in order to use that DNS server.
Here is the solution which I hope will avoid some useless "banging the head against a wall" for those of you who might have the same need.
Two or three steps are necessary.
1st step : Open the firewall to allow connections.
This is obviously necessary or else, whatever you do the connection will not be made. I use Comodo and so I added a rule in the firewall permitting all connections coming from the local LAN.
2nd step : Tell your server, apache in my case, to listen on its IP address.
I added the following entry in my httpd.conf file :
Listen [my ip address]:80
3rd step : Code the connection
The key to getting this to work is to tell which virtual server is needed. So, without further boring details, here is the code :
// setup the needed objects
HttpClient client = new DefaultHttpClient();
// create the request using the IP address of the server machine
HttpGet request = new HttpGet("http://[target ip address]:80/testpage.php");
// here is the code magic - manually set the host header
request.setHeader(HttpHeaders.HOST, "boutique.project.dev");
// now execute the request
HttpResponse response = client.execute(request);
// read back the response as normal
....
The result is that the apache server will map the request to the virtual host.
I hope this will be useful for others here !
Oh, I almost forgot, don't forget to enable the WiFi on your tablet - can save hours of wondering why it doesn't work !
I am looking into writing an Android tablet app as part of a wide parental control solution.
The app should set the tablet to work with a proxy server that will be used system wide (all apps on that device will be forced to go thought the proxy server).
The proxy server job will be to filter and monitor all outgoing connections from the tablet. As part of that, only specific sites will be available while most of the apps will be blocked (including the Google play store or any other communication app installed on the device).
As an extra, I want the user to not be able to change or remove the proxy settings if it's by monitoring and changing the settings back or by blocking the user with a password.
The actual proxy server is already running and functional.
It is important the app will not require a custom ROM and/or root access
Can it be done?
By default the control app wont work without having access to the all system - means a root access- You can try to understand the principle used by Android Anti Virus software and that will help more.
By default as if now it is not possible to set Proxy for Apps ...
I had the same problem for a while. I use a library that does http requests, but I can't acces the source. So I started digging and there were two things that I needed to do. One was to add this piece of code before my own http requests:
HttpClient httpClient = new DefaultHttpClient();
if (useProxy) {
HttpHost proxy = new HttpHost("192.168.1.10", 8080, "http");
httpClient.getParams().setParameter(ConnRoutePNames.DEFAULT_PROXY, proxy);
}
//use httpClient for a request here
But this did not solve my problem entirely. I couldn't access the source of the library that made it's own requests. I looked for more solutions and I found that you can use the following code to set a default proxy for all requests that your app makes.
System.setProperty("http.proxyHost", "192.168.1.10");
System.setProperty("http.proxyPort", "8080");
After adding this code, the requests from the library go through the proxy as well.
I have a python REST API server running on my laptop. I am trying to write a rest client in Android (using Eclipse ADT etc) to contact it using Apache's client (org.apache.http.client) libraries.
The code is really simple, and basically does the following -
HttpGet httpget = new HttpGet(new URI("http://10.0.2.2:8000/user?username=tim"));
HttpResponse response = httpclient.execute(httpget);
However at execute, it exceptions out with a time out exception. I cannot hit the URL even from the browser in the emulator.
Details of the exception
org.apache.http.conn.ConnectTimeoutException: Connect to /10.0.2.2:8000 timed out
However, I tried using the cREST client on Chrome on my laptop, and I am able to query the REST server fine.
Is it possible the machine is not on your network? Ie - it is on the other side of a router, on the internet somewhere? Because addresses starting "10." are reserved as private addresses and not routable.
See http://en.wikipedia.org/wiki/Private_network for more info
I had the same issue and here's how I figured out the cause:
Quit you emulator. Start your local server. In the browser, you should be able to access "http://localhost:8000/user?username=tim" and get some response. If you get a timeout, your server is likely not running. In my case, my python server had a break-point set and it was stuck there. Once I let it run, I was able to see responses on the browser and subsequently in the emulator (using 10.0.2.2).
I am creating an aplication that involves an WebView. The thing is that I want to load the full page and not the mobile one, so I have changed the User Agent. Nevertheless there are pages that loads the mobile version.
Here are two versions of code that I have tried:
1.webview.getSettings().setUserAgentString("Mozila ");
2.
String DESKTOP_USERAGENT = webview.getSettings().getUserAgentString ();
DESKTOP_USERAGENT = DESKTOP_USERAGENT.replace("Mobile ","");
webview.getSettings().setUserAgentString(DESKTOP_USERAGENT);
This are exemples of webpages that loads the mobile version in any cases:
http://www.jurnalul.ro
http://www.androidzoom.com
1.Does anyone knows how I can trick the server and tell him I am using a desktop and not a mobile?
2.How does a website knows that I am using a mobile version?
Thank you very much,
Razvan
The problem may be that if you are using a device that your carrier is routing all your HTTP requests through a proxy, and that the proxy is changing the User-Agent. Check on the other end, with your own server, using nc -l 80 -vvv that your request is indeed sending the User-Agent that you have modified.
EDIT: Some specific troubleshooting steps
Forward a port 9090 on your router to your desktop machine or laptop.
Download netcat
Run netcat with the command "nc -l 9090 -vvv"
In your Android application's WebView, make an HTTP request with the User-Agent you are injecting to http://your.ip.address:9090
In the terminal you ran netcat, you will see the HTTP request dump in plain text. There you can check the HTTP header User-Agent to see if it has been changed by a proxy server or not.
You cannot test this stuff with Wireshark or Fiddler because it is happening in the WAN. You need to test it on the receiving end, either on a server, or on your own desktop machine.
webview.getSettings().setUserAgent(1);//for desktop 1 or mobil 0.
I am developing an app in Android, and the emulator is not connecting to my localhost.
I have researched the issue and found some ideas but nothing seems to be working.
Below is the code i have been using:,
HttpClient httpclient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost("http://10.0.2.2/YES_BUTTON.php");
httpclient.execute(httpPost);
I have also tried a connection using "http://10.0.2.2:3128/YES_BUTTON.php";
The code would run a php file, but nothing happens, I have also checked the server access log and no connection was ever made with the Apache server from the emulator.
This is my first time building an app, and was wondering if there was something I haven't done, do I need to map the emulator port with the 3128 port on Apache, disable the firewall? I am developing the app on a laptop,with the Apache Server on the laptop also, so everything is being done on the same machine. Is there anything I havent done that needs to be done?
I bet you forgot to add the INTERNET permission :)
INTERNET