Provides some basic WAI handlers and middleware.

Provides basic WAI handler and middleware functionality:

• WAI Testing Framework

Hspec testing facilities and helpers for WAI.

• Event Source/Event Stream

Send server events to the client. Compatible with the JavaScript EventSource API.

• Accept Override

Override the Accept header in a request. Special handling for the _accept query parameter (which is used throughout WAI override the Accept header).

• Add Headers

WAI Middleware for adding arbitrary headers to an HTTP request.

• Clean Path

Clean a request path to a canonical form.

• Combine Headers

Combine duplicate headers into one.

• GZip Compression

Negotiate HTTP payload gzip compression.

• Health check endpoint

Add an empty health check endpoint.

• HTTP Basic Authentication

WAI Basic Authentication Middleware which uses Authorization header.

• JSONP

"JSON with Padding" middleware. Automatic wrapping of JSON responses to convert into JSONP.

• Method Override / Post

Allows overriding of the HTTP request method via the _method query string parameter.

• Request Logging

Request logging middleware for development and production environments

• Request Rewrite

Rewrite request path info based on a custom conversion rules.

• Select

Dynamically choose between Middlewares.

• Stream Files

Convert ResponseFile type responses into ResponseStream type.

• Virtual Host

Redirect incoming requests to a new host based on custom rules.

API docs and the README are available at http://www.stackage.org/package/wai-extra.

wai-extra

The goal here is to provide common features without many dependencies.

Example using Server-Sent Events

There is a small example using Server-Sent Events (SSE) in the ./example directory.

Run the commands below to start the server on http://localhost:8080

$ stack build .
$ stack exec example