From: Tony Arcieri <tony@...>
Date: 2008-02-12T11:42:55+09:00
Subject: Re: Rev/actor TCP monkey patching

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On Feb 11, 2008 4:26 PM, fedzor <fedzor@gmail.com> wrote:

> Short and sweet -
>
> How exactly does one monkey patch Rev's TCP over Net::HTTP-s?
>

Check out the SVN trunk:

svn checkout http://rev.rubyforge.org/svn/

There's now a Rev::SSL module you can extend any subclass of Rev::TCPSocket
with (this includes Revactor::TCP::Socket).

To use it with Rev::HttpClient, just:

require 'rev/ssl'

and subclass HttpClient, defining the following callbacks:

def on_connect
  super
  extend(Rev::SSL)
  ssl_client_start
end

You'll also need to:

def on_ssl_connect
  request(...) # Make the HTTP request after the SSL handshake completes
end

...to initiate the HTTP request after the SSL handshake is complete.

There's a cooresponding #on_ssl_error(ex) method you can define to capture
any errors which occur during the SSL handshake (or any attempts to
negotiate a new session).
You can also:

def ssl_context
  OpenSSL::SSL::SSLContext.new(...)
end

...to create an OpenSSL context to use for the SSL session.  By default no
certificate verification takes place, so if you'd like to do any add the
appropriate certificates to the SSL context object.

If you're having any trouble, you might take a look at the Revactor SVN
trunk:

svn checkout http://revactor.rubyforge.org/svn/

Revactor's HttpClient is already configured for SSL support, and wraps
everything up a lot better, e.g.:

response = Revactor::HttpClient.get("https://your.ssl.server.here/")

This also takes care of some of the other annoyances of HTTP, like following
redirects.

If you don't want to use Revactor directly, you can at least use it as a
reference for using Rev::HttpClient in conjunction with SSL.  Just have a
look at lib/revactor/http_client.rb

I'd like to wrap up SSL support in Rev's HttpClient a bit more nicely, but
for now my real priority was getting it working in Revactor.

-- 
Tony Arcieri
ClickCaster, Inc.
tony@clickcaster.com

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