Tagged web | F# Snippets

Snippets tagged web

Composable WCF Web API using Async

A functional wrapper around the new WCF Web APIs (http://wcf.codeplex.com/). Composition is achieved through the use of the HttpRequestMessage -> Async signature. Pushing the app calls in the MessageHandler intercepts all requests and allows you to take control at the earliest point possible before operation selection occurs. Extending this slightly to call the innerChannel's SendAsync would allow you to create a middleware layer that would work both with this and other, normal Web API services.
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Posted: 13 years ago by Ryan Riley
Asynchronous Controller Helper

The snippet declares a helper for creating asynchronous controllers for ASP.NET MVC 3. It declares a new base class for asynchronous actions that exposes a computation builder for writing actions using F# asynchronous workflows.
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Posted: 12 years ago by Tomas Petricek
Asynchronous Workflow Controller

The snippet overrides default AsyncControllerActionInvoker so F# async workflows can be used for ASP.NET MVC 3. It declares a new base class for asynchronous controller. Controller method has to have return type Async.
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Posted: 12 years ago by Dmitry Morozov
Stackoverflow API script

A script that consumes the Stackoverflow API in a dynamic fashion
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Posted: 12 years ago by Mauricio Scheffer
Type-safe URL templates for Nancy

The Nancy web framework parses URLs for you, and passes requests under a given URL route and HTTP method to your program. It relies heavily on C# dynamic objects; these don't translate well in F# code, and it's easy to make mistakes that only show up at run time. Here we define one F# record type for each route, with an attribute that defines the URL, with placeholders for each field in the record. These types implement one generic interface for each HTTP method they support: for GET, PUT and POST, these generic interfaces also specify the types of the HTTP request and response bodies.
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Posted: 11 years ago by Tim Robinson
Get url opened by Google Chrome's main window

This is a small example of invoking Win32 API. It gets the url which is opened by Google chrome's main window.
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Posted: 10 years ago by nagat01
Helpers for formatting dates and strings

Simplistic helpers for formatting dates and strings in a web server (strip HTML tags when reading RSS feeds, nicely format dates etc.)
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Posted: 8 years ago by Tomas Petricek
WebSharper: compile a quotation to JavaScript

This function compiles an F# quotation to a JavaScript string, or prints errors to stderr and returns None on failure.
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Posted: 8 years ago by Loïc `Tarmil` Denuzière
REST For Free

HttpListener + FParsec + Pattern Matching = Simple REST Endpoints
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Posted: 8 years ago by Ted Cackowski Jr
Simple HTTP Server

Simple HTTP server, runs on .Net Core, .Net or Mono, and serves GET requests via a handler. The example given serves up static content from a specified directory.
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Posted: 8 years ago by Phillip Trelford
Start and stop a Suave web server

To get a fast feedback loop going with web apps, you can run your experiments using the fsi, starting and restarting the web server each time without having to go through a slow msbuild cycle.
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Posted: 6 years ago by Chui Tey
Send file via HTML5 to Web server

Send file via HTML5 with a XMLHttpRequest to WebSharper Sitelet
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Posted: 4 years ago by giuliohome
Send HTTP Post Request (Handling error info)

Based on Tomas Petricek's: http://fssnip.net/a7 . Shows how to handle non OK (200) response codes, where .Net raises an exception upon GetResponse(), which makes it difficult to recover further error information. Here the snippet shows how to handle errors wrapping a Result type.
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Posted: 3 years ago by Joan Arnaldich
Web Crawler

This snippet features an F# Web crawler that i'm already using in 2 applications (slightly modified). It's based on a scalable network of communicating agents that follow URLs extracted from HTML pages until reaching the specified limit.
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Posted: 3 years ago by Taha Hachana
Web Crawler extensions

The snippet extends a web crawler from snippet http://fssnip.net/3K. It synchronizes all printing using an additional agent (so printed text does not interleave) and the crawling function returns an asynchronous workflow that returns when crawling completes.
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Posted: 8 months ago by Tomas Petricek

Yahoo Historical Quote Implementation

F# module to return historical EOD: open | high |low | close | volume quotes from Yahoo. Single day requests only. DataContract provided on the result record for easy serialization.
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Posted: 13 years ago by akaPhenom
WebSharper Hello World

This sample implements "Hello, world!" as a WebSharper application. It demonstrates how to compose HTML/XML using combinators, how to dynamically create a button with a handler and how to update an existing DOM element.
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Posted: 12 years ago by Tomas Petricek
Send HTTP POST request

The snippet shows how to send HTTP POST request to a web page and download the generated HTML result. The POST data is encoded as a byte array and written to the request stream of HttpWebRequest.
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Posted: 12 years ago by Tomas Petricek
Speech Stackoverflow article automatically

This snippet automatically speeches text of question,answers and comments in a Stackoverflow article. It requires HtmlAgilityPack(available from Nuget package manager).(Attention: You need reset F# interactive to stop the speech)
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Posted: 11 years ago by nagat01
Query Google.com

Query google.com (in english) without using any API key with the default WebClient class We are also instrumenting google ability to search between certain time period example: querygooglen 500 3000 "F#" 30 Here you fetch for 500 urls (we are grabbing 100 urls by query on google) wait between each query to google.com for 3 seconds you are seeking for the keyword "F#" you only want results who are at least newer than 30 days ago -Nicolas http://hackeratwork.com/
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Posted: 10 years ago by Nicolas Dirand
Use node.js packages from F#

For example executable, install NPM and stylus package.
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Posted: 10 years ago by Sergey Kaspar
DotLiquid integration with Suave

Example of integrating DotLiquid with a simple Suave server. The snippet automatically registers all public members of a record as members that can be accessed by DotLiquid templates.
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Posted: 8 years ago by Tomas Petricek
Rx Web Server Demo

Barebone Reactive Extensions web server demo.
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Posted: 8 years ago by Giacomo Stelluti Scala
Parallel Sitemap Test Runner

A sitemap-based url tester that runs in parallel.
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Posted: 13 years ago by Ryan Riley
OWIN Self-Host web-server

Simple OWIN Self-Host web-server with static files support and request deflate/gzip compression.
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Posted: 8 years ago by Tuomas Hietanen
Send async HTTP POST request

Bit like http://www.fssnip.net/a7 but send as async.
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Posted: 5 years ago by Tuomas Hietanen
Abstraction for Web Client Server

An abstract remoting server API and an abstract web reactive client to call it
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Posted: 4 years ago by giuliohome
Simple synchronous HTTP Server

Needed to receive an OAuth 2 response so used simple http listener
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Posted: 3 years ago by Ivan Rainbolt
Minimal AspNetCore web server

Demonstrates the minimum references required to run an AspNet.Core web server in F# script
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Posted: 3 years ago by Chui Tey