Android :: Use HTTP Post Method Or Simple Java Socket Program

Mar 20, 2010

Could someone please suggest me a good/efficient way to communicate with the server. I could think of two options 1) Use http post methods to send data to a php script at the server which would later call the google api's written in another java program (jar)or use php to use google api's (if its possible) to find nearby restaurants and send the list back to client. 2) Use simple java socket programming. The server has a jar file that supports multi threading and it does the job of finding restaurants and sending the list.

Android :: Use HTTP post method or Simple Java Socket Program


Android :: How To Use Http Connections Like TCP Socket In Java

Mar 9, 2010

may be asking a bit much here but I have faith in the community so it's worth trying. I'm making a game and I'm trying to pick the connection type to use for communicating between a Java mobile client and a Java server backend.Socket programing in Java is easy - there's a lovely tutorial on the subject and two way communication is trivial.Trouble is that on a mobile client (Android) it's not guaranteed that the cellular network will let you make TCP connections. That makes me think using an HTTP connection is the way to go. HTTP connections are request based but I need a way to push notifications from the server to the client. It seems the solution to this problem is to use 'long polling' I have read a bit about it but have yet to see a simple example for what I'm trying to achieve.Again I might be asking a lot but this seems like a fairly common problem, is there a library or framework I can import / use to wrap a Http connection and provide a two way long standing connection (That reconnects automatically etc). I read a bit about cometD but it doesn't seem to have a Java library that I can just pick up.The communication I need is not heavy, not constant two way streams of data just occasional updates either way to keep the game going.

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Android :: Project Using Httpclient - Http.client - Apache - Post/get Method

May 17, 2009

I'm doing a Get and Post method for an android project and I need to "translate" HttpClient 3.x to HttpClient 4.x (using by android).

My problem is that I'm not sure of what I have done and I don't find the "translation" of some methods...

This is the HttpClient 3.x I have done and (-->) the HttpClient 4.x "translation" if I have found it (Only parties who ask me problems) :

CODE:...........

I don't know if that is correct. This has caused problems because the packages are not named similarly, and some methods too. I just need documentation (I haven't found) and little help.

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Android :: Java Socket Not Throwing Exceptions On Dead Socket?

Jun 29, 2010

We have a simple client server architecture between our mobile device and our server both written in Java. An extremely simple ServerSocket and Socket implementation. However one problem is that when the client terminates abruptly (without closing the socket properly) the server does not know that it is disconnected. Furthermore, the server can continue to write to this socket without getting any exceptions. Why? According to documentation Java sockets should throw exceptions if you try to write to a socket that is not reachable on the other end!

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Android :: Socket Programming - Java - Many Clients One Socket

Nov 12, 2009

Essentially Im trying to get many many java clients connect to a socket on my ColdFusion server (Using the Socket Gateway). However before i even start to code this, Im a little confused about sockets and their performance. First of all, are sockets meant for many(1000+) clients connecting to one socket (say port 2202) on one server? How is the performance if all there waiting for is basically a ping, or something such that when these clients receive this "ping" they can go get some new data.

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Android :: Doing HTTP Post?

Oct 12, 2010

I need to pass some values to a URL by Post Method in my apllication. Please Help

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Android :: Secure HTTP Post?

Feb 12, 2010

I have a pretty basic helper class that I'm using to do all my Http Get/Post stuff. I'm using HttpGet, HttpPost, and HttpClient from the org.apache.http library. All of my stuff works fine over HTTP, but as soon as I tried to consume a service that works over HTTPS, I get a ClientProtocolException when executing the request. The only message in the exception is "The server failed to respond with a valid HTTP response".

To test, I sent the exact same payload from a browser using a simple html form and Fiddler2 using the RequestBuilder. I've sent invalid and empty payloads and even sent all of the above with and without headers to see if there was something funky about the way the objects were building the request.

Everything I've used in testing gives me a valid 200 status HTTP response. The service just gives me a structure describing the error if I give it something other than what it expects.

Is there something special I need to add to the HttpPost or HttpClient object(s) to tell it to use HTTPS? Do I have to explicitly tell it to use a different port?

I indeed registered the wrong socket factory for https communication. Here is the updated method that I use to create my HttpClient object with the correct socket factory just in case someone searches this kind of problem in the future:

CODE:............................

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Android :: Can Not Send Http Post?

Jun 13, 2010

I've been banging my head trying to figure out how to send a post method in Android.

This is how my code look like:

CODE:..................

This is the exception that I get:

CODE:............

Is there anything that I may need to configure from the Android emulator to get this working?

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Android :: Http Post With Parameter?

Jul 6, 2010

I want to send data to server from client(Android)

Below is my format.

CODE:......................

I'm trying series of trial but no use, how this can be done?

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Android :: Add Parameters In Http Post?

Jul 20, 2010

I am trying to upload file to php server using following tutorial http://getablogger.blogspot.com/2008/01/android-how-to-post-file-to-php-server.html

I dont know how to add parameters like: userid="12312";sessionid="234" in it.

How to achieve this?

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Android :: Making An HTTP POST?

Sep 6, 2010

I'm getting a problem making an HTTP POST in Android.

The problem occur when the code is reading the response, it cant obtain the complete web page code I want to retrieve.

I only retrieve a piece of the web.

Here is the code:

CODE:..............

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Android :: Can't Do A HTTP Post To A Web Service From My App

Sep 8, 2010

I've been working on an app that uses both GET and POST requests to Web Services. The GET requests are no problems but the POST requests are killing me. I've tried 2 different scenarios in the code. The first looks like this...

CODE:......

This code gets this result for me..."Bad Request (Invalid Header Name)"

Now here's my second piece of code...

CODE:.....

This gives me an entirely different result. It's a long garbled mess of xml and SOAP that does have a SOAP Exception mentioned in it..."Server was unable to process request. --- System.Xml.XmlException: Data at the root level is invalid. Line 1, position 1." Now, can anyone shed any light on what I am doing wrong.

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Android :: Uploading File Through HTTP Post

Sep 15, 2010

I am writing an application to upload a file from Android phone to a web server. I have tried the example from:

http://www.anddev.org/novice-tutorials-f8/doing-http-post-with-android

But it will only work for SDK 1.0 (why? Not Sure?).Can this be done for Android 2.1? Or is there any other method to load a file from Android to a webserver?

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Android :: HTTP Multipart POST - Data - Text

Sep 11, 2010

I would like to develop an application that uploads an image and some text data about that image.

To do that, I am trying to create a HTTP Multipart Post, as follows:

code:..........

My doubt is: how can I extract those values in the server? I would like to develop a Servlet to receive and process the post requests. In this Servlet I would need to extract these values in th request. Can you help me? Do you have any sample of server to answer the android multipart requests?

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Android :: Test Http Post Response In Emulator?

Oct 26, 2010

Let's say I want to perform a quick HTTP post to a website within my android app. If I were to set up the http client and send the post all in the onCreate method of the main screen (inside the UI thread) just for testing purposes, what would I use to quickly see what the response is to the post? I tried something quick and dirty below inside the onCreate method when the app first opens and nothing really happens, is there something more I need to do/obviously my toast idea is just bad.

HttpClient httpClient = new DefaultHttpClient();
HttpPost post = new HttpPost("http://forecast.weather.gov/zipcity.php?inputstring=04419");
HttpResponse httpResp;
try {
httpResp = httpClient.execute(post);
StatusLine status = httpResp.getStatusLine();
Toast.makeText(getApplicationContext(), (CharSequence) status, Toast.LENGTH_SHORT).show();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();}

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Android :: HTTP Post Issue - Get The Status Code As 405

May 2, 2010

CODE:..............

Always, I get the status code as 405. I tried request queue as well.. sneding the byte array as part of the request queue, still the same issue.

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Android :: HTTP Post Works In Activity But Not In Service

Nov 5, 2010

GI am trying to do a http post to a php script. the method works if I place it in the onCreate event of the application but gets a ConnectionTimeOut error when it tries to execute it from the service.

Here is an example of my method

CODE:...................

I have no idea why the service would get a time out error but the application activity would not.

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Android : Can Not Call A Java Method Using Add Java Script Interface()

Mar 16, 2009

I'm trying to call a java method from javascript using addJavascriptInterface(); but seems does not work, it always display "failure"; java code...

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Android :: HTTP Post Does Not Send File MIME Type

Aug 14, 2010

Trying to figure what's wrong with my codings. I followed a blog post from here. I managed to get the codes to actually upload the file to a PHP web service. However, for some reason although I've set explicitly the MIME type for the file, PHP shows that the MIME is just a blank string and therefore rejected.

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Android :: Can't Grab Progress On Http POST File Upload / Way To Fix?

Jul 9, 2010

I am developing an Android app which enables the user to upload a file to services like Twitpic and others.
The POST upload is done without any external libraries and works just fine. My only problem is, that I can't grab any progress because all the uploading is done when I receive the response, not while writing the bytes into the outputstream.

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Android : Need Http Client POST - Null Pointer Exception

Aug 22, 2010

I am new to Android development since my EVO purchase a few months ago. Anyway, I am developing my first Android app using Eclipse and Android SDK emulator. I am trying to do a simple HTTP POST. My real code has my login information hard coded in so I replaced it with test information and I changed the url as well to simply POST to google.com. I am getting a NullPointerException when trying to view the HTTP POST request response. I have added the internet permissions to my manifest xml file as well. Code...

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Android : Code For Simple Client Server Http Communication?

Aug 29, 2009

I am new to android development

can u give anybody .....code for simple client server http communication. i don't know how these client interact with server....

can u tel me the steps for this network concept...how we send the url connection to the serve..

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Adding JSON To HTTP Post

Aug 11, 2013

I'm trying to access a web service by "Post"-ing a valid email and password.It works in Google chrome, but I have not gotten it to work in Android.Below is my attempt to access the web service but I get a

{"status":"500","error":"Internal Server Error"}
error.
class PostToUnilabLogin extends AsyncTask<String, Integer, String>{
@Override
protected String doInBackground(String... params) {
// TODO Auto-generated method stub
[code]...

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How To Show Progress Bar On HTTP POST Using Asynctask

Oct 4, 2011

I am trying to upload a video to an api and I was wondering how you show a progress bar show and also dismiss it when an upload has finished? Also, while were at it, do you see anything wrong with my pattern.compile for my edit boxes?

Code:
public class Loadvid extends AsyncTask <Object,Integer,String>{
EditText etxt_user = (EditText) findViewById(R.id.user_email);
EditText etxt_pass = (EditText) findViewById(R.id.friend_email);
[code]...

But it doesn't work. When i click on the button to send, it shows the handler for 2 seconds then brings up an error close.Error log.

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Android :: Http Post Abort Not Returning Immediately When Called From Separate Thread

Mar 24, 2010

I am using a DefaultHttpClient and a ThreadSafeClientConnManager to share the httpClient across threads. That part is working well. However, when I execute an HttpPost in one thread, and call httpPost.abort() from another. It does not return immediately and continues blocking until the socket timeout is reached in most cases. Am I missing something else? I've tried using: connectionManager.closeIdleConnections(30, TimeUnit.SECONDS); connectionManager.closeExpiredConnections();

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Android :: How To Approach Socket Programming Between C# -> Java

May 8, 2010

I've recently knocked up a server/client app for Windows & Android that allows one to send a file from Windows to an android phone over a socket connection. It works great for a single file but trying to send multiple files over in a single stream is causing me problems. I've also realised that aside from the binary data, I will need to send messages over the socket to indicate error states and other application messages. I have little experience with network programming and and wondering what is the best way forward.Basically the C# server side of the app just goes into a listening state and uses Socket.SendFile to transmit the file. On Android I use the standard Java Socket.getInputStream() to receive the file. That works great for a single file transfer, but how should I handle multiple files and error/messaging information? Do I need to use a different socket for each file? Should I be using a higher level framework to handle this or can I send everything over the single socket? Any other suggestions for frameworks or learning materials?

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General :: Can't Download ZIP Via HTTP Post Through Stock Browser?

Mar 1, 2012

Why can't I download a ZIP via HTTP post through the stock browser?

The problem is mostly described in the following article: [URL] .....

Basically I am currently working on an ASP.NET application that bundles bunch of files into a zip and pushes it back to the client via the response output stream.

Now this works fine in Firefox and in the ICS 4.0 stock browser, but doesn't work on the clients Galaxy Tab running Honeycomb 3.0. What happens is it appears to download the html of the page instead.

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Android :: Send Url Using Http Get Method?

Sep 2, 2009

How we can send the Url Using Http Get Method in Android Android ..I tried but it doesn't works.can u give me the code to send url via http get method..

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Android :: Java Socket IO Exception - Permission Denied

Nov 2, 2010

i am trying to connect to a server on my network running a tcp listener using the following java code. I am getting am IOException - Permission Denied. It is from an android 2.2 emulator.Does anyone know why?Socket socket = new Socket("1.1.1.1", 1111);PrintWriter out = new PrintWriter( socket.getOutputStream(), true);Out.println("test");socket.close();

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Android :: How To Send Url To Server Using Http Get Method

Sep 2, 2009

How to send the Url to the server using Http Get method...Here i m trying to insert a name into the databse .If i execute the below showing code there it tells "Connection to http:localhost refused " I think the error is is in the Http method..how to Correct it....

CODE:...............................

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