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An InstalledSpecification represents a gem that is already installed locally.

A set of gems for installation sourced from remote sources and local .gem files

A VendorSet represents gems that have been unpacked into a specific directory that contains a gemspec.

This is used for gem dependency file support.

Example:

set = Gem::Resolver::VendorSet.new

set.add_vendor_gem 'rake', 'vendor/rake'

The directory vendor/rake must contain an unpacked rake gem along with a rake.gemspec (watching the given name).

A VendorSpecification represents a gem that has been unpacked into a project and is being loaded through a gem dependencies file through the path: option.

The TrustDir manages the trusted certificates for gem signature verification.

Represents an installed gem. This is used for dependency resolution.

This represents a vendored source that is similar to an installed gem.

The StaticSet is a static set of gem specifications used for testing only. It is available by requiring Gem::TestCase.

Raised if a parameter such as %e, %i, %o or %n is used without fetching a specific field.

RFC 2617 Digest Access Authentication for WEBrick

Use this class to add digest authentication to a WEBrick servlet.

Here is an example of how to set up DigestAuth:

config = { :Realm => 'DigestAuth example realm' }

htdigest = WEBrick::HTTPAuth::Htdigest.new 'my_password_file'
htdigest.set_passwd config[:Realm], 'username', 'password'
htdigest.flush

config[:UserDB] = htdigest

digest_auth = WEBrick::HTTPAuth::DigestAuth.new config

When using this as with a servlet be sure not to create a new DigestAuth object in the servlet’s initialize. By default WEBrick creates a new servlet instance for every request and the DigestAuth object must be used across requests.

Digest authentication for proxy servers. See DigestAuth for details.

Htdigest accesses apache-compatible digest password files. Passwords are matched to a realm where they are valid. For security, the path for a digest password database should be stored outside of the paths available to the HTTP server.

Htdigest is intended for use with WEBrick::HTTPAuth::DigestAuth and stores passwords using cryptographic hashes.

htpasswd = WEBrick::HTTPAuth::Htdigest.new 'my_password_file'
htpasswd.set_passwd 'my realm', 'username', 'password'
htpasswd.flush

AbstractServlet allows HTTP server modules to be reused across multiple servers and allows encapsulation of functionality.

By default a servlet will respond to GET, HEAD (through an alias to GET) and OPTIONS requests.

By default a new servlet is initialized for every request. A servlet instance can be reused by overriding ::get_instance in the AbstractServlet subclass.

A Simple Servlet

class Simple < WEBrick::HTTPServlet::AbstractServlet
  def do_GET request, response
    status, content_type, body = do_stuff_with request

    response.status = status
    response['Content-Type'] = content_type
    response.body = body
  end

  def do_stuff_with request
    return 200, 'text/plain', 'you got a page'
  end
end

This servlet can be mounted on a server at a given path:

server.mount '/simple', Simple

Servlet Configuration

Servlets can be configured via initialize. The first argument is the HTTP server the servlet is being initialized for.

class Configurable < Simple
  def initialize server, color, size
    super server
    @color = color
    @size = size
  end

  def do_stuff_with request
    content = "<p " \
              %q{style="color: #{@color}; font-size: #{@size}"} \
              ">Hello, World!"

    return 200, "text/html", content
  end
end

This servlet must be provided two arguments at mount time:

server.mount '/configurable', Configurable, 'red', '2em'

Root of the HTTP status class hierarchy

Root of the HTTP error statuses

Root of the HTTP client error statuses

Stores multipart form data. FormData objects are created when WEBrick::HTTPUtils.parse_form_data is called.

The TextConstruct module is used to define a Text construct Atom element, which is used to store small quantities of human-readable text.

The TextConstruct has a type attribute, e.g. text, html, xhtml

Reference: validator.w3.org/feed/docs/rfc4287.html#text.constructs

The PersonConstruct module is used to define a person Atom element that can be used to describe a person, corporation or similar entity.

The PersonConstruct has a Name, Uri and Email child elements.

Reference: validator.w3.org/feed/docs/rfc4287.html#atomPersonConstruct

Element used to describe an Atom date and time in the ISO 8601 format

Examples:

• 2013-03-04T15:30:02Z

• 2013-03-04T10:30:02-05:00