[Eric] Debugger (no connection)
Albert Zeyer
albert.zeyer at rwth-aachen.de
Sat Sep 13 15:13:36 BST 2008
Hi,
I figured out the problem:
In DebugServer.__init__(), the self.listen(hostAddress) fails (returns
false). Also self.isListening() returns false. If I replace it with
just self.listen(), it works. hostAddress.toString() returns
PyQt4.QtCore.QString(u'FE80:0:0:0:0:0:0:1'). I also checked
self.errorString() after it failed and it returns
PyQt4.QtCore.QString(u'The address is not available'). It seems that
hostAddress is somehow wrong. I checked the preferences of Eric and
under General debugger settings, Network interface, "Only selected
interface" is activated there and the lo0-interface is selected (that
it the loopback-device under MacOSX). When I just switch to "All
network interfaces" there, it also works. It seems that Eric takes
somehow the wrong hostAddress out of it.
For now, it is not that important to bind Eric only on the loopback-
device, I am mot of the time in a secure network anyway. But do you
have idea how to fix that in future?
Regards,
Albert
Am 13.09.2008 um 15:43 schrieb Detlev Offenbach:
> Hi,
>
> I don't have any Mac OS X around here, so eric4 is untested (at
> least by me)
> on that platform. However, I will assist you in debugging the problem.
>
> 1) Please check in the debug client, which address and port it is
> given by the
> debug server. Insert a print statement in the main() method and print
> sys.argv.
>
> 2) You may change the debug server to passive mode using the
> configuration
> dialog and connect the client manually tp port 42424 (the default).
>
> 3) If your system is using only IPv6, the call in line 960 may fail
> because
> DebugAddress is assigned the localhost IP 127.0.0.1 (IPv4). It is
> defined on
> line 11 in DebugProtocol.py. If you're using IPv6, try changing it
> to "::1".
>
> Regards,
> Detlev
>
> On Samstag, 13. September 2008, Albert Zeyer wrote:
>> Hi,
>>
>> I am new to Eric but I like the IDE as far as I have explored it. I
>> though have some problems.
>>
>> My environment: Eric 4.2.1 (r2426) on MacOSX with Python 2.5.1.
>>
>> The problem: The debugger stopped working. (I think it has worked at
>> the very beginning, at least I cannot remember that I have seen the
>> error message there.) The first thing after I start the IDE is the
>> following message in the Log-viewer:
>>
>> Traceback (most recent call last):
>> File "/Library/Python/2.5/site-packages/eric4/DebugClients/Python/
>> DebugClient.py", line 38, in <module>
>> debugClient.main()
>> File "/Library/Python/2.5/site-packages/eric4/DebugClients/Python/
>> DebugClientBase.py", line 1858, in main
>> self.connectDebugger(port, remoteAddress, redirect)
>> File "/Library/Python/2.5/site-packages/eric4/DebugClients/Python/
>> DebugClientBase.py", line 960, in connectDebugger
>> sock.connect((DebugAddress,port))
>> File "<string>", line 1, in connect
>> socket.error: (49, "Can't assign requested address")
>>
>> I also get the same message in the Shell:
>>
>> StdErr: Traceback (most recent call last):
>> File "/Library/Python/2.5/site-packages/eric4/DebugClients/Python/
>> DebugClient.py", line 38, in <module>
>> debugClient.main()
>> File "/Library/Python/2.5/site-packages/eric4/DebugClients/Python/
>> DebugClientBase.py", line 1858, in main
>> self.connectDebugger(port, remoteAddress, redirect)
>> File "/Library/Python/2.5/site-packages/eric4/DebugClients/Python/
>> DebugClientBase.py", line 960, in connectDebugger
>> sock.connect((DebugAddress,port))
>> File "<string>", line 1, in connect
>> socket.error: (49, "Can't assign requested address")
>>
>> This comes right after the start. But also when I try to debug any
>> script, I get this message again and the debugger also seems not to
>> work.
>>
>> I browsed a bit through the code of Eric4 to understand the debugging
>> system. It seems that the IDE is starting a debug-server (the
>> DebugServer class) which is built into the IDE and then it starts an
>> external Python tool, the DebugClient, which connects over a TCP port
>> to the DebugServer. The DebugServer provides all debugging functions
>> and the DebugClient controls that.
>>
>> I wondered now a bit about the message from DebugClient. "Can't
>> assign
>> requested address" normally only appears if you used a invalid port
>> number, like 0. On all other ports, it should give the message
>> "Connection refused". I also tried that myself:
>>
>> Macintosh:~ az$ python /Library/Python/2.5/site-packages/eric4/
>> DebugClients/Python/DebugClient.py 1
>> Traceback (most recent call last):
>> File "/Library/Python/2.5/site-packages/eric4/DebugClients/Python/
>> DebugClient.py", line 38, in <module>
>> debugClient.main()
>> File "/Library/Python/2.5/site-packages/eric4/DebugClients/Python/
>> DebugClientBase.py", line 1858, in main
>> self.connectDebugger(port, remoteAddress, redirect)
>> File "/Library/Python/2.5/site-packages/eric4/DebugClients/Python/
>> DebugClientBase.py", line 960, in connectDebugger
>> sock.connect((DebugAddress,port))
>> File "<string>", line 1, in connect
>> socket.error: (61, 'Connection refused')
>>
>> And:
>>
>> Macintosh:~ az$ python /Library/Python/2.5/site-packages/eric4/
>> DebugClients/Python/DebugClient.py 0
>> Traceback (most recent call last):
>> File "/Library/Python/2.5/site-packages/eric4/DebugClients/Python/
>> DebugClient.py", line 38, in <module>
>> debugClient.main()
>> File "/Library/Python/2.5/site-packages/eric4/DebugClients/Python/
>> DebugClientBase.py", line 1858, in main
>> self.connectDebugger(port, remoteAddress, redirect)
>> File "/Library/Python/2.5/site-packages/eric4/DebugClients/Python/
>> DebugClientBase.py", line 960, in connectDebugger
>> sock.connect((DebugAddress,port))
>> File "<string>", line 1, in connect
>> socket.error: (49, "Can't assign requested address")
>>
>> Then, to go further, I tried to figure out on which port the server
>> was listening. I browsed through the code and it seems that the
>> server
>> just uses a random port (it does not specify that). I thought I
>> perhaps try out to connect to that port manually with the
>> DebugClient.
>> But it seems that the server was not correctly started, because
>> Python
>> has not opened any port:
>>
>> Macintosh:~ az$ lsof -i -P | grep -i python
>> Python 24119 az 8u IPv6 0x3e524bc 0t0 TCP *:* (CLOSED)
>>
>> Any suggestions?
>>
>> Thanks,
>> Albert
>>
>> _______________________________________________
>> Eric mailing list
>> Eric at riverbankcomputing.com
>> http://www.riverbankcomputing.com/mailman/listinfo/eric
>
>
>
> --
> Detlev Offenbach
> detlev at die-offenbachs.de
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