Use http_parser to parse "100 Continue" response, added spec (disabled, pending suitable test server). Rebased on iostream branch.

Author: CodeMonkeySteve

lib/em-http/http_connection.rb

@@ -117,8 +117,13 @@ def post_init
       @p.header_value_type = :mixed
       @p.on_headers_complete = proc do |h|
         if client
-          client.parse_response_header(h, @p.http_version, @p.status_code)
-          :reset if client.req.no_body?
+          if @p.status_code == 100
+            client.send_request_body
+            @p.reset!
+          else
+            client.parse_response_header(h, @p.http_version, @p.status_code)
+            :reset if client.req.no_body?
+          end
         else
           # if we receive unexpected data without a pending client request
           # reset the parser to avoid firing any further callbacks and close
@@ -151,11 +156,7 @@ def peer
 
     def receive_data(data)
       begin
-        if client.request_body_pending? && data.starts_with?('HTTP/1.1 100 Continue')
-          client.send_request_body
-        else
-          @p << data
-        end
+        @p << data
       rescue HTTP::Parser::Error => e
         c = @clients.shift
         c.nil? ? unbind(e.message) : c.on_error(e.message)

spec/client_spec.rb

@@ -256,6 +256,19 @@ def failed(http=nil)
     }
   end
 
+  xit "should support expect-continue header" do
+    EventMachine.run {
+      http = EventMachine::HttpRequest.new('http://127.0.0.1:8090').post :body => "data", :head => { 'expect' => '100-continue' }
+
+      http.errback { failed(http) }
+      http.callback {
+        http.response_header.status.should == 200
+        http.response.should == "data"
+        EventMachine.stop
+      }
+    }
+  end
+
   it "should perform successful GET with custom header" do
     EventMachine.run {
       http = EventMachine::HttpRequest.new('http://127.0.0.1:8090/').get :head => {'if-none-match' => 'evar!'}