Develop Reference

HTTP basic request in Android

I want to do a POST HTTP request to the serving to receive some cookies from the server. During this POST request I also need to send some data like login and password. I found a lot of solutions but nothing is working, everything that I found is deprecated.
So the question is: how can I make a HTTP POST request to receive form the server some cookies after?

Android LoginActivity using standard http request

I'm using LoginActivity template and I'm trying to login to a website with email and password using a standard http request. The site doesn't provide an API so I'm thinking of somehow mirroring the site login to fill the email and password boxes on the page then sending the login request.
Think of logging in to stackoverflow for example by taking the input of an email and password TextView (s) and sending a standard http request to the authentication server with those credentials exactly how it would happen in the browser (same requests and addresses).
I haven't done anything like this before and I have no idea if it's even possible so please forgive any ignorance on my part.

This is done in Android in a similar fashion as in the web browser. Namely, you will send a POST request with proper parameters, let's say a JSON Object for the sake of explaining which contains something like:
{
username: 'myUsername'
password: 'mypass'
}
This will get processed and if your credentials are correct, you will get a response which may contain a variety of data, among which the accessToken (it may be called a slight variation of this).
You are supposed to remember this access token and use it to fetch any other data from the site, because that token is used from there on to authenticate you. I have an API I personally made, and I send the accessToken as a parameter in every request for a resource that is unavailable to the unregistered user.
As for the technical side, I'm using a nifty library called OkHttp for sending the Http requests, and it's quite rewarding and easy to use. Here's a code snippet to see what I'm talking about:
//JSON is a media type for parsing json
//json is a json string containing payload e.g. username and pass like in the example
OkHttpClient httpClient = new OkHttpClient();
RequestBody body = RequestBody.create(JSON, json);
Request request = new Request.Builder()
.url(url)
.post(body)
.build();
Response response = httpClient.newCall(request).execute();
The only thing left to to for you is to properly parse the response. You can find various solutions on this topic, but I personally use 2 approaches, BufferedReader for huge responses using response.body().byteStream(), and plain old String for not-so-large responses using response.body().string().
This is not a short, but very thorough explanation, so feel free to ask for clarification if you do not get some part.

Assuming that you need to log in to sites like StackOverflow from your app with standard http request. That is simply impossible. Because no organizations will allow third party sites/apps handling their users' credentials. If they intend to share their resource with third party most organizations follow this procedure:
First they provide api for you to use.
With that api only you can make users to login i.e you can't handle those credentials
Then they give a token to you corresponding to the user.
With that token you can perform subsequent requests.
If the organization doesn't provide api then they most probably are in situation of not allowing third party sites/apps to access their users' resource.

Android REST API

I need to access this url and put user name and password I am trying a HTTP Post request with parameter but it's giving an error.Can any one help me how can I access this url from android.
https://54.204.193.209:943/rest/GetUserlogin
Getting ERROR
javax.net.ssl.SSLPeerUnverifiedException: No peer certificate

When I tried to access your url, pop up comes up asking to enter credentials that means at server side, HTTP Basic Authentication has been enabled.
To access anything on server, you have to go through it. Add following code :
// Set credentials for HTTP Basic Authentication
defaultHttpClient.getCredentialsProvider().setCredentials(
new AuthScope(AuthScope.ANY_HOST, AuthScope.ANY_PORT),
new UsernamePasswordCredentials(
HTTPS_BASIC_AUTH_USERNAME,
HTTPS_BASIC_AUTH_PASWORD));
Credentials for HTTP basic auth is unique for one server, hence you can hardcode it in your java code.
Hope, this will help you.

Authenticating a file stream from android to wcf

I have an app that makes request to a wcf service. Usually I authenticate all of the requests using a hash value that is sent in the body of the request and then authenticated on the server. All most all of the request are sent via json and it is easy for me to add the hash value to the body of the request. The issue I am facing is that when I send a file stream I cannot add the hash to the body of the request so I am wondering how I can authenticate that the request came from my app and not from some where else. All suggestions are greatly appreciated.

Adding an authorization item in the header is a possible solution. So, if anyone is interested, read this and this.

Google Reader API request token, get 400:Bad Request

this Android code worked fine before, but i'm having problems for some reason. here is the request i'm trying to make:
https://www.google.com/reader/api/0/token
i'm getting 400:Bad Request as a response, and i'm not sure why. isn't this the correct URL for requesting a token? the auth token is being passed as a header in all requests now, and i can request feed list, and it works just fine, so there's nothing wrong with the auth code. what gives?
in addition, i can request a token in a normal browser, like Chrome, and get a token as a response body. so the request itself is not the problem. i just can't figure out what is wrong with my requests in code...

the answer is to use http rather than https. if anyone else is having trouble getting tokens from the unofficial google reader api, check whether you are using secure http or not.