Don't wrap direct response messages with Forward wrapper(s)

[andrewwhitehead]

Fixes #198

[codecov-io]

Codecov Report

Merging #199 into master will increase coverage by 0.63%.
The diff coverage is 56.66%.

@@            Coverage Diff             @@
##           master     #199      +/-   ##
==========================================
+ Coverage   71.58%   72.22%   +0.63%     
==========================================
  Files         218      218              
  Lines        9982     9988       +6     
==========================================
+ Hits         7146     7214      +68     
+ Misses       2836     2774      -62

[lgtm-com]

This pull request fixes 10 alerts when merging 2a5be41 into fd02a50 - view on LGTM.com

fixed alerts:

• 4 for Variable defined multiple times
• 3 for Mismatch between signature and use of an overridden method
• 2 for First argument of a method is not named 'self'
• 1 for Unused exception object

[swcurran]

Review addition of check, handling of condition and new test cases.