Tutorial by Examples: web

Reading GET response as string using System.Net.HttpWebRequest

string requestUri = "http://www.example.com"; string responseData; HttpWebRequest request = (HttpWebRequest)WebRequest.Create(parameters.Uri); WebResponse response = request.GetResponse(); using (StreamReader responseReader = new StreamReader(response.GetResponseStream())) { ...

Reading GET response as string using System.Net.WebClient

string requestUri = "http://www.example.com"; string responseData; using (var client = new WebClient()) { responseData = client.DownloadString(requestUri); }

Sending a POST request with a string payload using System.Net.HttpWebRequest

string requestUri = "http://www.example.com"; string requestBodyString = "Request body string."; string contentType = "text/plain"; string requestMethod = "POST"; HttpWebRequest request = (HttpWebRequest)WebRequest.Create(requestUri) { Method = reque...

Sending a POST request with a string payload using System.Net.WebClient

string requestUri = "http://www.example.com"; string requestBodyString = "Request body string."; string contentType = "text/plain"; string requestMethod = "POST"; byte[] responseBody; byte[] requestBodyBytes = Encoding.UTF8.GetBytes(requestBodyS...

JavaScript alert dialogs in WebView - How to make them work

By default, WebView does not implement JavaScript alert dialogs, ie. alert() will do nothing. In order to make you need to firstly enable JavaScript (obviously..), and then set a WebChromeClient to handle requests for alert dialogs from the page: webView.setWebChromeClient(new WebChromeClient() { ...

Get the page history of a WebView

WebHistory history = webView.getEngine().getHistory(); The history is basically a list of entries. Each entry represents a visited page and it provides access to relevant page info, such as URL, title, and the date the page was last visited. The list can be obtained by using the getEntries() met...

Deserialization using System.Web.Script.Serialization.JavaScriptSerializer

The JavaScriptSerializer.Deserialize<T>(input) method attempts to deserialize a string of valid JSON into an object of the specified type <T>, using the default mappings natively supported by JavaScriptSerializer. using System.Collections; using System.Web.Script.Serialization; // ....

HTML output from web server

PHP can be used to add content to HTML files. While HTML is processed directly by a web browser, PHP scripts are executed by a web server and the resulting HTML is sent to the browser. The following HTML markup contains a PHP statement that will add Hello World! to the output: <!DOCTYPE html&gt...

Non-HTML output from web server

In some cases, when working with a web server, overriding the web server's default content type may be required. There may be cases where you need to send data as plain text, JSON, or XML, for example. The header() function can send a raw HTTP header. You can add the Content-Type header to notify t...

Sharing a folder via HttpWebRequest in PowerShell

$url = "https://api.dropboxapi.com/2/sharing/share_folder" $req = [System.Net.HttpWebRequest]::Create($url) $req.headers["Authorization"] = "Bearer <ACCESS_TOKEN>" $req.Method = "POST" $req.ContentType = "application/json" $enc = [system...

Getting account information for the linked user via HttpWebRequest in PowerShell

$url = "https://api.dropboxapi.com/2/users/get_current_account" $req = [System.Net.HttpWebRequest]::Create($url) $req.headers["Authorization"] = "Bearer <ACCESS_TOKEN>" $req.Method = "POST" $res = $req.GetResponse() Write-Host "Response Sta...

JavaScript/Web SDK

For JavaScript, here is the code we recommend for generating, persisting and retrieving a UUID. This could be wrapped in a function can called directly from the PUBNUB.init function rather than the two step inline solution below. // get/create/store UUID var UUID = PUBNUB.db.get('session') || (fun...

Testing Sandbox Webhooks with ngrok and Express (Node)

In this example we're going to look at testing webhook notifications in sandbox, using ngrok to provide a tunnel for our Node HTTP listener, running on localhost, to the internet. For this example, we're going to be using Node to set up notification webhooks for payment events (such as a payment bei...

Updating a Webhook with a New URL (Node Sample)

This sample will show you how to update an existing webhook forwarding URL (where the notifications should be POSTed to). To run this, you should have the ID provided back by PayPal when you first created your webhooks. First, add the PayPal SDK and configure the environment (sandbox below). var p...

Recognizing an audio file using WebSockets in Java

Using the Java-SDK 3.0.1 CountDownLatch lock = new CountDownLatch(1); SpeechToText service = new SpeechToText(); service.setUsernameAndPassword("<username>", "<password>"); FileInputStream audio = new FileInputStream("filename.wav"); RecognizeOpti...

Transcribing an audio file using WebSockets (Node.js)

This example shows how to use the IBM Watson Speech to Text service to recognize the type of an audio file and produce a transcription of the spoken text in that file. This example requires Speech to Text service credentials and Node.js Install the npm module for the Watson Developer Cloud N...

Establish a web socket connection

var wsHost = "ws://my-sites-url.com/path/to/web-socket-handler"; var ws = new WebSocket(wsHost);

Creating a WebJob in the Azure Portal

In the Web App blade of the Azure Portal, click All settings > WebJobs to show the WebJobs blade: Click Add. The Add WebJob dialog appears. Under Name, provide a name for the WebJob. The name must start with a letter or a number and cannot contain any special characters other than...

Web Feed

Use the rel="alternate" attribute to allow discoverability of your Atom/RSS feeds. <link rel="alternate" type="application/atom+xml" href="http://example.com/feed.xml" /> <link rel="alternate" type="application/rss+xml" href=&quo...

Simple Spring Boot web application using Gradle as build system

This example assumes you have already installed Java and Gradle. Use the following project structure: src/ main/ java/ com/ example/ Application.java build.gradle build.gradle is your build script for Gradle build system with the following content: buildscri...

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