I'm trying to test-implement Distributed Object using the example
server / client from the book "Cocoa Programming" by Scott Anguish,
Erik M. Buck, Donald A. Yacktman (chapter 23).
I've kept the sample server in Objective C, and I'm trying to
implement the client in PyFit.
What I'm stuck on right now is a crash calling
self.server.addMessageClient_( self )
in my method applicationDidFinishLaunching_
Do you have any suggestions? I can send the crash-log as well...
Here's the python source code:
************************************
#
# DOTestPythonClientAppDelegate.py
# DOTestPythonClient
#
from Foundation import *
from AppKit import *
from PyObjCTools import *
from objc import *
MYMessageServerProtocol = formal_protocol( u'MYMessageServerProtocol', None, [
selector( None, selector='addMessageClient:', signature='[EMAIL PROTECTED]:[EMAIL PROTECTED]'),
selector( None, selector='removeMessageClient:', signature='[EMAIL PROTECTED]:[EMAIL PROTECTED]'),
selector( None, selector='broadcastMessageString:',
signature='[EMAIL PROTECTED]:[EMAIL PROTECTED]') ] )
class DOTestPythonClientAppDelegate(NibClassBuilder.AutoBaseClass):
composeView = ivar(u'composeView')
messageView = ivar(u'messageView')
sendButton = ivar(u'sendButton')
server = None
def sendMessage_(self,aSender):
NSLog( u"sendMessage_ ." )
self.server.broadcastMessageString_( self.composeView.string() )
self.composeView.setString_( u'' )
def appendMessageString_(self,aSstring): # called by server...
NSLog( u"appendMessageString ." )
#NSRange
appendRange = NSMakeRange( self.messageView.string().length(), 0);
#Append text and scroll if neccessary
self.messageView.replaceCharactersInRange_withString_(
appendRange, aString );
self.messageView.scrollRangeToVisible_( appendRange )
return self
def connectionDidDie_(self,aNotification):
NSLog( u"Error: Connection to server is broken." )
def applicationDidFinishLaunching_(self,aNotification):
NSLog( u"applicationDidFinishLaunching_ ." )
self.server =
NSConnection.rootProxyForConnectionWithRegisteredName_host_(
u"server", None ).retain()
if None == self.server :
NSLog( u"Error: Failed to connect to server." )
else:
NSLog( u"did connect to server." )
connectionDidDie_SEL = selector( self.connectionDidDie_,
selector='connectionDidDie:', signature="[EMAIL PROTECTED]:[EMAIL PROTECTED]" )
NSNotificationCenter.defaultCenter().addObserver_selector_name_object_(
self, connectionDidDie_SEL,
NSConnectionDidDieNotification, None )
NSLog( u"called
defaultCenter().addObserver_selector_name_object_." )
self.server.setProtocolForProxy_( MYMessageServerProtocol )
NSLog( u"called self.server.setProtocolForProxy_." )
self.server.addMessageClient_( self ) # crashing here...
NSLog( u"called self.server.addMessageClient_." )
astr = u"Connected: %s %d" %
NSProcessInfo.processInfo().processName(),
NSProcessInfo.processInfo().processIdentifier()
NSLog( u"astr = '%s'" % astr )
self.server.broadcastMessageString_( astr ) # convert to NSString
NSLog( u"called self.server.broadcastMessageString_." )
def applicationWillTerminate_(self,aNotification):
NSLog( u"applicationWillTerminate_ ." )
if NO == self.server.removeMessageClient_(self) :
NSLog( u"Error: Failed to remove client." )
self.server.release()
self.server = None
--
C. Keith Ray
_______________________________________________
