Two Android Clients And One Java Server?
Mar 5, 2013
I've created a java server and an android client (A), the client(A) gets it's GPS coordinates and sends them to the server, I need the server to send them to client(B). I'm not entirely sure as to what to do, whether I should have separate ports etc or what.
Below is my two clients and server
SERVER
[HIGH]import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.Scanner;
[code].....
With this, I run the server, then run CLIENT B in the emulator and CLIENT A on the device, once I run CLIENT A, CLIENT B force shuts.
CLIENT A / SERVER connectivity is 100%, it prints to console (for testing). What I need to try to find out is how do I send the data to CLIENT B, I have used different ports and i'm sure that's why CLIENT B force shuts.
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Apr 15, 2010
I am using WCF to write a server that should be able to communicate with .Net clients, Android clients and possibly other types of clients. The main type of client is a desktop application that will be written in .Net. This client will usually be on the same intranet as the server. It will make an initial call to the server to get the current state of the system and will then receive updates from the server whenever a value changes. These updates are frequent, perhaps once a second. The Android clients will connect over the Internet. This client is also interested in updates, but it is not as critical as for the desktop client so a (less frequent) polling scenario might be acceptable.
All clients will have to login to use the services, and when connecting over the Internet the connection should be secure. I am familiar with WCF but I am not sure what bindings are most appropriate for the scenario and what security solution to use. Also, I have not used Android, but I would like to make it as simple as possible for the person implementing the Android client to consume my services. So, what is my strategy?
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Nov 2, 2010
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socket.close();
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Oct 20, 2010
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Jul 7, 2010
I'm using URLConnection to connect to the main server. The server implements digest authentication. If I connect to the server with java library, the connection is successful. But if I use the same code for android, the connection is rejected for the reason - username and password do not match.
Here is the code for my Java project:
code:...........
The above code works fine and I'm able to connect to my host server which is implementing digest authentication. I'm unable to use the same code for Android to connect.
Here is my android code:
code:.........
If the same code works for Java, it should also work for Android.
The code loops in the Authenticator as it finds username and password not matching in the Android code for some reason which in fact are correct. The code runs perfect for Java project.
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Jun 11, 2009
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Nov 17, 2010
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Oct 12, 2010
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Jul 20, 2010
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Nov 7, 2009
Email Services I use - Google Apps and FastMail.FM. I use Google Apps for Email Standard (Free) Edition. Google Apps Standard Edition helps groups build communities - Google Apps Standard Edition:
* Google Mail with my own domain
* Google Talk with my own domain
Google Apps account also includes:
* Calendar
* Docs
* Contacts
The Primary Google Account has necessary features not offered in Google Apps:
* Google Voice
* Google Reader
* Blogger
* Notebook
* Finance
Unfortunately, Google does not allow the above properties to be including in Google Apps accounts at this time. Therefore, I'm continuously logged into two Google Accounts:
1) Google Apps
2) Google Account
When on the web, Android, etc., I can be logged into both the Google Account and Google Apps simultaneously - two separate gateways that do not interfere with one another. This is also nice because I use Google Voice to place calls as well as sending SMS messages.
Fastmail Account:
I also use Fastmail.FM. Here's a recent article about Fastmail with an interview with Jeremy Howard, one of the Fastmail founders. Here are a few of the reasons why I use Fastmail (enhanced account)
* Virtual Domain Management - MX Mail Servers
* Aliases - Subdomain alias features
* Compose with Personalities Management (alternate sending From: Headers)
* File Storage / Websites
* Advanced Sieve Filtering
* Alternate Logins - One Time Passwords (OTP)
Using these Services on Android
In Google Apps Mail/Gmail (on the web) I have a drop-down menu in the From: header to send from alternate email addresses. When using the Gmail App on Android or through the browser, there is no drop-down menu or option to send from an alternate email address. I've been having the same issue on the iPod Touch (or iPhone) through the Safari browser as there is also no drop-down menu or option to send from an alternate email address. Using the mobile-based Fastmail.fm, I find that this works very well on the Android browser. Fastmail.fm is the only web-mobile email service I've found that allows one to take use the drop-down menu at the From: header to select an alternate email address.
I find it odd that Gmail has a similar From: header drop-down menu on the standard web, but not on mobile devices. Hence, when I need to choose a specific header to send from and I'm on my Android device, I use Fastmail via the mobile browser. The only downside of Fastmail via the mobile browser is there is no autofill like on the Gmail App and Gmail mobile site. I have to "add from the address book" which involves extra steps. However, I have put in a request for this on the Fastmail forum.
Mobile Email Client - IMAP
Of course, all of these services (Gmail, Google Apps, Fastmail) offer IMAP and we can use the mobile email client as a viable alternative. It should be noted, however, that the email clients do not offer the option modify the default From: sending address. I really wish that Android would offer a way to include the standard From: drop-down menu within the Gmail App and on the Gmail mobile web browser.
I have placed a request here in the "Application Requests" forum:
Gmail App, or Mail App, that offers a From: drop-down menu.
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