web interface of I2PTunnel is buggy

[i2pn00b (n00b@…]

- open link:  http://127.0.0.1:7657/i2ptunnel/index.jsp
- choose HTTP from the New server tunnel dropdown list
- click Create button
- fill in the Port form field (the only one that is marked in red)
- scroll down and hit Save button
- I get the error message 'Invalid form submission, probably because you used the 'back' or 'reload' button on your browser. Please resubmit.'

This happens almost always. This means that in about 5 cases out of ~100 the tunnel was created and I didn't see this error message.

I have tried this in at least 3 GUI browsers.

People on IRC said this looks like a nonce problem, that something similar used to happen earlier, then it was dealt with, so it is considered to be fixed now. Well, it is not. I was also told on IRC by at least one more i2p user that he experiences the same problem.

My next step was to try emulating the browser by using a HTTP speaking library. I used the following python code:

#!/usr/bin/env python 

import time 

import mechanize 

b = mechanize.Browser() 
b.open('http://127.0.0.1:7657/i2ptunnel/index.jsp') 
b.select_form(nr=0) 
b['type'] = ['httpserver'] 
r = b.submit() 
time.sleep(3) 
b.select_form(nr=0) 
b['targetPort'] = '4488' 
b['privKeyFile'] = 'eepsite1/eepPriv.dat' 
r = b.submit() 
s = r.read() 
open('log', 'w').write(s)

After running it, I refreshed link:  http://127.0.0.1:7657/i2ptunnel/index.jsp and I saw 3 (yes, three!) new tunnels there. This seems to be wrong as well. I don't know it there are 3 tunnels created or if it's just the web interface that displays redundant things, but this is certainly not the expected result.

[anonymous]

This nonce bug affects not only the creation of new tunnels. It also affects the management of existing ones. For example, I can't start the mtn tunnel, which does not autostart by default. Here is a way to mitigate this by manually editing the file ~/.i2p/i2ptunnel.config:

- locate the mtn tunnel by config option tunnel.2.name=mtn.i2p2.i2p
- to make it start automatically, fix the option tunnel.2.startOnLoad=true
- restart the i2p router and the mtn tunnel will become functional by default

[anonymous]

see also;

 http://zzz.i2p/search?type=posts&query=invalid+form

[zzz]

re: the nonce problem, I've tried again to fix it and that fix will be in 0.8.1, but I'll leave this ticket open for a while until it's tested.

re: the python script, I don't really know what's going on there, sorry.

[zzz]

closing and hoping the nonce fix is good.

re: the python script, I have no idea what you are trying to do but we aren't designing the console for scripts.