diff --git a/clients/send_nrdp.py b/clients/send_nrdp.py
index edae19c..8acc92b 100755
--- a/clients/send_nrdp.py
+++ b/clients/send_nrdp.py
@@ -1,6 +1,6 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
-##############################################################################
+ #############################################################################
  #
  #
  #  send_nrdp.py - Send host/service checkresults to NRDP with XML
@@ -45,14 +45,18 @@
  #
  #############################################################################
 
-
-import argparse, sys, urllib, cgi
+import argparse, sys
+from html import escape
+from future.standard_library import install_aliases
+install_aliases()
+from urllib import request as UrlRequest
+from urllib import parse as UrlParse
 from xml.dom.minidom import parseString
 
 class send_nrdp:
     def run(self):
         parser = argparse.ArgumentParser(formatter_class=argparse.RawTextHelpFormatter)
-        
+
         parser.add_argument('-u', '--url', action="store",
             dest="url", help="\
 ** REQUIRED ** The URL used to access the remote NRDP agent.")
@@ -106,9 +110,9 @@ def run(self):
 printf \"<hostname>\\t<service>\\t<state>\\t<output>\\n\"\n")
         parser.add_argument('-c', '--checktype', action="store",
             dest="checktype", help="1 for passive 0 for active")
-        
+
         options = parser.parse_args()
-	
+
         if not options.url:
             parser.error('You must specify a url.')
         if not options.token:
@@ -116,9 +120,9 @@ def run(self):
         try:
             self.setup(options)
             sys.exit()
-        except Exception, e:
+        except Exception as e:
             sys.exit(e)
-        
+
     def getText(self, nodelist):
         rc = []
         for node in nodelist:
@@ -130,28 +134,26 @@ def post_data(self, url, token, xml):
         # Make sure URL ends with a /
         if not url.endswith('/'):
             url += '/'
-        
-        params = urllib.urlencode({'token': token.strip(), 'cmd': 'submitcheck', 'xml': xml});
-        opener = urllib.FancyURLopener()
+        params = UrlParse.urlencode({'token': token.strip(), 'cmd': 'submitcheck', 'XMLDATA': xml});
+        url_with_data = "{0}?{1}".format(url, params)
         try:
-            f = opener.open(url, params)
-            result = parseString(f.read())
-        except Exception, e:
-            print "Cannot connect to url."
-            # TODO add directory option
-            sys.exit(e)
+            with UrlRequest.urlopen(url_with_data) as f:
+                result = parseString(f.read().decode('utf-8'))
+        except Exception as e:
+            print("ERROR - Cannot connect to url: {0}".format(str(e)))
+            return -3
         if self.getText(result.getElementsByTagName("status")[0].childNodes) == "0":
-            sys.exit()
+            return 1
         else:
-            print "ERROR - NRDP Returned: "+self.getText(result.getElementsByTagName("message")[0].childNodes)
-            sys.exit(1)
+            print("ERROR - NRDP Returned: " + self.getText(result.getElementsByTagName("message")[0].childNodes))
+            return -1
 
     def setup(self, options):
         if not options.delim:
             options.delim = "\t"
         if not options.checktype:
             options.checktype = "1"
-        
+
         # If only url and token have been provided then it is assumed that data is being piped
         if not options.hostname and not options.state and not options.file:
             xml="<?xml version='1.0'?>\n<checkresults>\n";
@@ -159,47 +161,47 @@ def setup(self, options):
                 parts = line.split(options.delim)
                 if len(parts) == 4:
                     xml += "<checkresult type='service' checktype='"+options.checktype+"'>"
-                    xml += "<hostname>"+cgi.escape(parts[0],True)+"</hostname>"
-                    xml += "<servicename>"+cgi.escape(parts[1],True)+"</servicename>"
+                    xml += "<hostname>"+html.escape(parts[0],True)+"</hostname>"
+                    xml += "<servicename>"+html.escape(parts[1],True)+"</servicename>"
                     xml += "<state>"+parts[2]+"</state>"
-                    xml += "<output>"+cgi.escape(parts[3],True)+"</output>"
+                    xml += "<output>"+html.escape(parts[3],True)+"</output>"
                     xml += "</checkresult>"
                 if len(parts) == 3:
                     xml += "<checkresult type='host' checktype='"+options.checktype+"'>"
-                    xml += "<hostname>"+cgi.escape(parts[0],True)+"</hostname>"
+                    xml += "<hostname>"+html.escape(parts[0],True)+"</hostname>"
                     xml += "<state>"+parts[1]+"</state>"
-                    xml += "<output>"+cgi.escape(parts[2],True)+"</output>"
+                    xml += "<output>"+html.escape(parts[2],True)+"</output>"
                     xml += "</checkresult>"
                 xml += "</checkresults>"
-        
+
         elif options.hostname and options.state:
             xml="<?xml version='1.0'?>\n<checkresults>\n";
             if options.service:
                 xml += "<checkresult type='service' checktype='"+options.checktype+"'>"
-                xml += "<hostname>"+cgi.escape(options.hostname,True)+"</hostname>"
-                xml += "<servicename>"+cgi.escape(options.service,True)+"</servicename>"
+                xml += "<hostname>"+html.escape(options.hostname,True)+"</hostname>"
+                xml += "<servicename>"+html.escape(options.service,True)+"</servicename>"
                 xml += "<state>"+options.state+"</state>"
-                xml += "<output>"+cgi.escape(options.output,True)+"</output>"
+                xml += "<output>"+html.escape(options.output,True)+"</output>"
                 xml += "</checkresult>"
             else:
                 xml += "<checkresult type='host'  checktype='"+options.checktype+"'>"
-                xml += "<hostname>"+cgi.escape(options.hostname,True)+"</hostname>"
+                xml += "<hostname>"+html.escape(options.hostname,True)+"</hostname>"
                 xml += "<state>"+options.state+"</state>"
-                xml += "<output>"+cgi.escape(options.output,True)+"</output>"
+                xml += "<output>"+html.escape(options.output,True)+"</output>"
                 xml += "</checkresult>"
             xml += "</checkresults>"
 
         elif options.file:
             try:
                 file_handle = open(options.file, 'r')
-            except Exception, e:
-                print "Error opening file '"+options.file+"'"
-                sys.exit(e)
+            except Exception as e:
+                print("ERROR - in opening file: " + options.file)
+                return -4
             else:
                 xml = file_handle.read()
                 file_handle.close()
 
-        self.post_data(options.url, options.token, xml)
+        return self.post_data(options.url, options.token, xml)
 
 if __name__ == "__main__":
     send_nrdp().run()