Distinguish connection timeouts

lib/http/errors.rb

@@ -19,6 +19,9 @@ class StateError < ResponseError; end
   # Generic Timeout error
   class TimeoutError < Error; end
 
+  # Timeout when first establishing the conncetion
+  class ConnectTimeoutError < TimeoutError; end
+
   # Header value is of unexpected format (similar to Net::HTTPHeaderSyntaxError)
   class HeaderError < Error; end
 end

lib/http/timeout/global.rb

@@ -21,7 +21,7 @@ def reset_counter
 
       def connect(socket_class, host, port, nodelay = false)
         reset_timer
-        ::Timeout.timeout(@time_left, TimeoutError) do
+        ::Timeout.timeout(@time_left, ConnectTimeoutError) do
           @socket = socket_class.open(host, port)
           @socket.setsockopt(Socket::IPPROTO_TCP, Socket::TCP_NODELAY, 1) if nodelay
         end

lib/http/timeout/per_operation.rb

@@ -20,7 +20,7 @@ def initialize(*args)
       end
 
       def connect(socket_class, host, port, nodelay = false)
-        ::Timeout.timeout(@connect_timeout, TimeoutError) do
+        ::Timeout.timeout(@connect_timeout, ConnectTimeoutError) do
           @socket = socket_class.open(host, port)
           @socket.setsockopt(Socket::IPPROTO_TCP, Socket::TCP_NODELAY, 1) if nodelay
         end

spec/lib/http/client_spec.rb

@@ -389,8 +389,8 @@ def on_error(request, error)
           client.use(:test_feature => feature_instance).
             timeout(0.001).
             request(:post, sleep_url)
-        end.to raise_error(HTTP::TimeoutError)
-        expect(feature_instance.captured_error).to be_a(HTTP::TimeoutError)
+        end.to raise_error(HTTP::ConnectTimeoutError)
+        expect(feature_instance.captured_error).to be_a(HTTP::ConnectTimeoutError)
       end
     end
   end

spec/support/http_handling_shared.rb

@@ -77,7 +77,7 @@
         sleep 1.25
       end
 
-      expect { response }.to raise_error(HTTP::TimeoutError, /execution/)
+      expect { response }.to raise_error(HTTP::ConnectTimeoutError, /execution/)
     end
 
     it "errors if reading takes too long" do