PROTON-1724: Revert "PROTON-1721 [ruby] resovler errors are not handled correctly"

This reverts commit c4d5fde71d925f3f44b0e29d672de7b039ee709f.

In the context of Ruby it is better to raise these exceptions immediately than to
bury them as events.
diff --git a/proton-c/bindings/ruby/lib/core/container.rb b/proton-c/bindings/ruby/lib/core/container.rb
index e16323b..7a69b58 100644
--- a/proton-c/bindings/ruby/lib/core/container.rb
+++ b/proton-c/bindings/ruby/lib/core/container.rb
@@ -41,18 +41,6 @@
       end
     end
 
-    # Used as the @io when a socket cannot be created due to an erro (e.g resolver fails)
-    # Saves the error and raises it in on_readable so it can be reported via normal channels.
-     class BrokenSocket
-       def initialize(msg) @error = IOError.new(msg); end
-       [:read_nonblock, :write_nonblock, :accept].each do |m|
-         define_method(m) { |*args| raise @error }
-       end
-       [:close_read, :close_write, :close].each do |m|
-         define_method(m) {}
-       end
-    end
-
     class ListenTask < Listener
 
       def initialize(io, handler, container)
@@ -190,12 +178,7 @@
         opts[:password] ||= url.password
       end
       opts[:ssl_domain] ||= SSLDomain.new(SSLDomain::MODE_CLIENT) if url.scheme == "amqps"
-      socket = begin
-                 TCPSocket.new(url.host, url.port)
-               rescue => e
-                 BrokenSocket.new("connect(#{url}): #{e}")
-               end
-      connect_io(socket, opts)
+      connect_io(TCPSocket.new(url.host, url.port), opts)
     end
 
     # Open an AMQP protocol connection on an existing {IO} object
@@ -220,12 +203,7 @@
       not_stopped
       url = Qpid::Proton::uri url
       # TODO aconway 2017-11-01: amqps, SSL
-      server = begin
-                 TCPServer.new(url.host, url.port)
-               rescue => e
-                 BrokenSocket.new("listen(#{url}): #{e}")
-               end
-      listen_io(server, handler)
+      listen_io(TCPServer.new(url.host, url.port), handler)
     end
 
     # Listen for incoming AMQP connections on an existing server socket.
diff --git a/proton-c/bindings/ruby/tests/test_container.rb b/proton-c/bindings/ruby/tests/test_container.rb
index f2ad1f1..71a9f3a 100644
--- a/proton-c/bindings/ruby/tests/test_container.rb
+++ b/proton-c/bindings/ruby/tests/test_container.rb
@@ -152,11 +152,8 @@
 
   def test_bad_host
     cont = Container.new(__method__)
-    l = cont.listen("badlisten.example.com:999")
-    c = cont.connect("badconnect.example.com:999")
-    cont.run
-    assert_match(/badlisten.example.com:999/, l.condition.description)
-    assert_match(/badconnect.example.com:999/, c.transport.condition.description)
+    assert_raises (SocketError) { cont.listen("badlisten.example.com:999") }
+    assert_raises (SocketError) { c = cont.connect("badconnect.example.com:999") }
   end
 
   # Verify that connection options are sent to the peer and available as Connection methods