Github user SolidWallOfCode commented on a diff in the pull request:

    https://github.com/apache/trafficserver/pull/669#discussion_r64783870
  
    --- Diff: proxy/http/Http1ClientSession.cc ---
    @@ -427,9 +427,12 @@ Http1ClientSession::release(ProxyClientTransaction 
*trans)
         ka_vio = this->do_io_read(this, INT64_MAX, read_buffer);
         ink_assert(slave_ka_vio != ka_vio);
     
    -    // Y!?
    -    // client_vc->add_to_keep_alive_lru();
    -    client_vc->cancel_active_timeout();
    +    if (client_vc) {
    +      client_vc->add_to_keep_alive_queue();
    +      if (client_vc) {
    --- End diff --
    
    Susan had to explain this to me because I'm kind of slow but I think it 
might be good to have a comment about why `client_vc` needs to be checked again.


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