[Discuss-gnuradio] GRC setting port of XMLRPC client via parameter

[Christian Fiedler]

Hallo,

I tried to set the port value of a XMLRPC client and server script in 
GRC with a parameter.

In GRC I set a parameter "port" with type "int" and default value 8080.

The server script worked fine, but running the client script I get 
following error:

Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/gnuradio/qtgui/range.py", line 
196, in changed
    self.notifyChanged(self.rangeType(value))
  File "/usr/lib/python2.7/dist-packages/gnuradio/qtgui/range.py", line 
242, in counterChanged
    self.notifyChanged(self.rangeType(value))
  File "/home/christian/xmlrpc_client_test.py", line 91, in set_v_value
    self.xmlrpc_client_0.set_value(self.v_value)
  File "/usr/lib/python2.7/xmlrpclib.py", line 1243, in __call__
    return self.__send(self.__name, args)
  File "/usr/lib/python2.7/xmlrpclib.py", line 1602, in __request
    verbose=self.__verbose
  File "/usr/lib/python2.7/xmlrpclib.py", line 1283, in request
    return self.single_request(host, handler, request_body, verbose)
  File "/usr/lib/python2.7/xmlrpclib.py", line 1303, in single_request
    h = self.make_connection(host)
  File "/usr/lib/python2.7/xmlrpclib.py", line 1389, in make_connection
    self._connection = host, httplib.HTTPConnection(chost)
  File "/usr/lib/python2.7/httplib.py", line 751, in __init__
    (self.host, self.port) = self._get_hostport(host, port)
  File "/usr/lib/python2.7/httplib.py", line 792, in _get_hostport
    raise InvalidURL("nonnumeric port: '%s'" % host[i+1:])
httplib.InvalidURL: nonnumeric port: 'port'


looking to the XML of both Blocks I saw the

/usr/share/gnuradio/grc/blocks/xmlrpc_client.xml
###################################################
##Simple XMLRPC Client
###################################################
 ...
<make>xmlrpclib.Server('http://$(addr()):$(port)')</make>
...
/usr/share/gnuradio/grc/blocks/xmlrpc_server.xml

###################################################
##Simple XMLRPC Server
###################################################
...
    <make>SimpleXMLRPCServer.SimpleXMLRPCServer(($addr, $port), 
allow_none=True)
...

so I changed the 
...<make>xmlrpclib.Server('http://$(addr()):$(port)')</make>

to <make>xmlrpclib.Server('http://$(addr()):' +str($(port)))</make>

Is this right way to do so, or is there an easier way to pass the 
variable in GRC to the XMLRPC Client Block?