Move sending except into client body ready. Fixes #1210

lib/puma/client.rb

@@ -216,6 +216,13 @@ module Puma
     end
 
     def setup_body
+      if @env[HTTP_EXPECT] == CONTINUE
+        # TODO allow a hook here to check the headers before
+        # going forward
+        @io << HTTP_11_100
+        @io.flush
+      end
+
       @read_header = false
 
       body = @parser.body

lib/puma/server.rb

@@ -418,10 +418,6 @@ module Puma
     def process_client(client, buffer)
       begin
 
-        if client.env[HTTP_EXPECT] == CONTINUE
-          client.io << HTTP_11_100
-        end
-
         clean_thread_locals = @options[:clean_thread_locals]
         close_socket = true