YADE should perform parallel file transfers

Current Situation

• When YADE transfer profile is configured to do parallel file transfers using ConcurrentTransfer=true and MaxConcurrentTransfers=4
• From FTP server's log one can see YADE create 5 sessions, but transfer only 1 file at time
• This behavior is independent of source/target protocol being used.

Test Setup

• YADE Settings

  [globals]
  history                             = /home/test/sos-berlin.com/jade_client/jade_releases/jade_client.1.10/logs/jade_history.csv
  verbose                             = 0
  
  
  [protocol_fragment_sftp@sftp_homer]
  protocol                            = sftp
  
  host                                = homer.sos
  user                                = test
  ssh_auth_method                     = publickey
  ssh_auth_file                       = /home/test/.ssh/id_rsa
  proxy_protocol                      = http
  proxy_host                          = homer.sos
  proxy_port                          = 3128
  proxy_user                          = proxy_user
  proxy_password                      = 12345
  strict_host_key_checking            = false
  
  [01_05_Local2SFTPFileSizeMFiles010ConcurrentTransfer02]
  operation                           = copy
  
  source_protocol                     = local
  file_spec                           = ^TEST-M-[0-9]{3}.TXT$
  source_dir                          = /home/test/data/from_galadriel
  
  target_include                      = protocol_fragment_sftp@sftp_homer
  target_dir                          = /home/test/data/to_homer/
  
  Concurrent_Transfer                 = true
  Max_Concurrent_Transfers            = 4
  

Desired Behavior

• YADE should transfer multiple files in parallel when ConcurrentTransfer=true and MaxConcurrentTransfers=4 ( MaxConcurrentTransfers parameter can be any integer)