diff --git a/client/lib/engine/bin/ProtocolLib.py b/client/lib/engine/bin/ProtocolLib.py
index d14fc7c..b12de50 100644
--- a/client/lib/engine/bin/ProtocolLib.py
+++ b/client/lib/engine/bin/ProtocolLib.py
@@ -3,6 +3,7 @@
 import subprocess
 import re
 import json
+import os.path
 
 import ogGlobals
 import SystemLib
@@ -368,10 +369,10 @@ def ogMcastSyntax (op, sess, file=None, device=None, tool=None, level=None):
 #
 
 #ogMcastSendFile [str_REPOSITORY] [int_ndisk int_npart] /Relative_path_file sesionMcast" \
-#ogMcastSendFile (disk=1, par=1, file='/aula1/winxp.img',                      sess='sesionMcast')
-#ogMcastSendFile (from='REPO',   file='/aula1/ubuntu.iso',                     sess='sesionMcast')
-#ogMcastSendFile (from='CACHE',  file='/aula1/winxp.img',                      sess='sesionMcast')
-#ogMcastSendFile (               file='/opt/opengnsys/images/aula1/hd500.vmx', sess='sesionMcast')
+#ogMcastSendFile (disk=1, par=1,     file='/aula1/winxp.img',                      sess='sesionMcast')
+#ogMcastSendFile (take_from='REPO',  file='/aula1/ubuntu.iso',                     sess='sesionMcast')
+#ogMcastSendFile (take_from='CACHE', file='/aula1/winxp.img',                      sess='sesionMcast')
+#ogMcastSendFile (                   file='/opt/opengnsys/images/aula1/hd500.vmx', sess='sesionMcast')
 def ogMcastSendFile (disk=None, par=None, take_from=None, file=None, sess=None):
     if file is None:
         raise TypeError ('missing required argument: "file"')
@@ -382,7 +383,7 @@ def ogMcastSendFile (disk=None, par=None, take_from=None, file=None, sess=None):
         if disk is None and par is None:
             ## we were given take_from=
             source = FileLib.ogGetPath (src=take_from, file=file)
-            dev_err = ' '.join ([take_from, file])
+            dev_err = f'{take_from} {file}'
             print (f'ogGetPath (src=({take_from}), file=({file})) = source ({source})')
         else:
             raise TypeError ('argument "take_from" can be specified along neither "disk" nor "par"')
@@ -391,7 +392,7 @@ def ogMcastSendFile (disk=None, par=None, take_from=None, file=None, sess=None):
         if disk is not None and par is not None:
             ## we were given disk= par=
             source = FileLib.ogGetPath (src=f'{disk} {par}', file=file)
-            dev_err = ' '.join ([disk, par, file])
+            dev_err = f'{disk} {par} {file}'
             print (f'ogGetPath (src=({disk} {par}), file=({file})) = source ({source})')
         elif disk is None and par is None:
             ## we were given nothing
@@ -401,6 +402,10 @@ def ogMcastSendFile (disk=None, par=None, take_from=None, file=None, sess=None):
         else:
             raise TypeError ('if one of "disk" and "par" are specified, then both must be')
 
+    if not source:
+        SystemLib.ogRaiseError ([], ogGlobals.OG_ERR_NOTFOUND, f'device or file {dev_err} not found')
+        return
+
     path2 = FileLib.ogGetPath (file=source)
     print (f'path2 ({path2})')
     if not path2:
@@ -431,6 +436,54 @@ def ogMcastSendFile (disk=None, par=None, take_from=None, file=None, sess=None):
 #*/ ##
 #
 
+#ogMcastReceiverFile ([ str_portMcast] [ [Relative_path_file] | [str_REPOSITORY path_file] |  [int_ndisk int_npart path_file ]  ]" \
+#ogMcastReceiverFile (                  file='/PS1_PH1.img',       sess='9000')
+#ogMcastReceiverFile (write_to='CACHE', file='/aula1/PS2_PH4.img', sess='9000')
+#ogMcastReceiverFile (disk=1, par=1,    file='/isos/linux.iso',    sess='9000')
+def ogMcastReceiverFile (disk=None, par=None, write_to=None, file=None, sess=None):
+    if file is None:
+        raise TypeError ('missing required argument: "file"')
+    if sess is None:
+        raise TypeError ('missing required argument: "sess"')
+
+    if write_to is not None:
+        if disk is None and par is None:
+            ## we were given write_to=
+            targetdir = FileLib.ogGetParentPath (src=write_to, file=file)
+            dev_err = f'{write_to} {file}'
+            print (f'ogGetParentPath (src=({write_to}), file=({file})) = targetdir ({targetdir})')
+        else:
+            raise TypeError ('argument "write_to" can be specified along neither "disk" nor "par"')
+
+    else:
+        if disk is not None and par is not None:
+            ## we were given disk= par=
+            targetdir = FileLib.ogGetParentPath (src=f'{disk} {par}', file=file)
+            dev_err = f'{disk} {par} {file}'
+            print (f'ogGetParentPath (src=({disk} {par}), file=({file})) = targetdir ({targetdir})')
+        elif disk is None and par is None:
+            ## we were given nothing
+            targetdir = FileLib.ogGetParentPath (file=file)
+            dev_err = file
+            print (f'ogGetParentPath (file=({file})) = targetdir ({targetdir})')
+        else:
+            raise TypeError ('if one of "disk" and "par" are specified, then both must be')
+
+    if not targetdir:
+        SystemLib.ogRaiseError ([], ogGlobals.OG_ERR_NOTFOUND, f'target directory {targetdir} not found')
+        return
+
+    targetfile = os.path.basename (file)
+    print (f'targetfile ({targetfile})')
+
+    cmd = ogMcastSyntax ('RECEIVERFILE', sess, file=os.path.join (targetdir, targetfile))
+    if not cmd: return None
+    print (f'cmd ({cmd})')
+    try:
+        subprocess.run (cmd, shell=True, check=True)
+    except subprocess.CalledProcessError:
+        SystemLib.ogRaiseError ([], ogGlobals.OG_ERR_MCASTRECEIVERFILE, targetfile)
+        return None
 
 
 #/**