Can't make

[jnule1a]

I had difficulties to install netcore. Could you tell me what is wrong ? Thank you in advance. Here is what happened:

• Installation of the pre-built virtual machine is ok.
• Installation of the finishing touches is ok up to before make.
• make produces an error: cabal configure --enable-tests Warning: The package list for 'hackage.haskell.org' is 19 days old. Run 'cabal update' to get the latest list of available packages. Resolving dependencies... Configuring netcore-1.1.0... cabal: At least the following dependencies are missing: HList -any, HUnit -any, QuickCheck >=2, ansi-wl-pprint -any, bimap ==0.2., binary-strict >=0.4.0, fgl -any, hslogger ==1.2., json >=0.4.3, syb ==0.3., test-framework -any, test-framework-hunit -any, test-framework-quickcheck2 -any, test-framework-th -any make: ** [all] Error 1

I also tried unsuccessfully to use the stable version:

• Installation of the pre-built virtual machine is ok.
• Installation of the stable version and examples is ok.
• But "sudo ./demo.py vagrant" displays the following: [INFO : 2013-01-15 10:45:59 EST : nettle] could not accept switch switch broke connection xterm -e "echo \"Ping Connectivity over MAC Learning:\"; echo \"Ctrl+D to exit\"; ping 10.0.0.2 -c 10; bash" [INFO : 2013-01-15 10:45:59 EST : ARP] Got new routing policy for ARP [INFO : 2013-01-15 10:46:00 EST : nettle] could not accept switch switch broke connection xterm -e "echo \"ARP caching using MAC Learning for connectivity\"; echo \"Ctrl+D to exit\"; echo \"Unfortunately, arping doesn't work on mininet.\"; arp -n; echo \"At first, ping uses regular ARP over the MAC learning:\"; ping 10.0.0.2 -c 1; arp -n; echo \"But if we clear the ARP table, we get a reply from the controller:\"; arp -d 10.0.0.2; arp -n; ping 10.0.0.2 -c 1; bash" [INFO : 2013-01-15 10:46:00 EST : nettle] could not accept switch switch broke connection during handshake [INFO : 2013-01-15 10:46:00 EST : ARP] Got new routing policy for ARP [INFO : 2013-01-15 10:46:01 EST : nettle] could not accept switch switch broke connection xterm -e "echo \"SSH Daemon on the other host\"; echo \"Ctrl+D to exit\"; $(which sshd) -d; bash" xterm -e "echo \"Pings get blocked when at high frequency,\"; echo \"Ctrl+D to exit\"; echo \"# ping 10.0.0.2-i 0.1 -c 50 -q\"; ping 10.0.0.2 -i 0.1 -c 50 -q; echo \"but SSH still works because it's on a different slice.\"; echo \"(but do give it a moment...)\"; echo \"# ssh vagrant@10.0.0.2\"; ssh vagrant@10.0.0.2; bash" [INFO : 2013-01-15 10:46:01 EST : nettle] could not accept switch switch broke connection during handshake

[cschlesi]

Thanks for the report! There are really three issues here:

1. The wiki instructions were missing a step.
2. We use Cabal, not make, as a build system---the Makefile in the netcore directory is something of a red herring.
3. demo.py is broken.

1

Some NetCore dependences rely on the Happy Haskell parser generator. This needs to be installed before you can build NetCore:

cabal install happy

NB: This should be pre-installed as part of the VM image, but it's not. Hopefully it will be in the future.

2

At this point, we rely on the Cabal build system rather than make (the Makefile was added at some point as a convenience, but it's not supported or recommended and should probably be removed). From the netcore directory, the command to build NetCore is:

cabal install --enable-tests

or:

cabal-dev install --enable-tests

to install in a sandbox in the current directory.

However, you may also want to build a controller instead of just the library. To build the example controller, navigate to netcore/examples directory and run the command:

cabal-dev install . ..

This will build a single controller binary that includes most of the examples. The executable will be located in netcore/examples/cabal-dev/bin/frenetic-example-suite. Running

frenetic-example-suite --repeater

will start a controller with a policy as stated in netcore/examples/Repeater.hs. You can run

frenetic-example-suite --help

for a list of all the available flags, and the file netcore/examples/Main.hs shows which module each flag invokes.

3

As for demo.py, it seems to have broken. I'll add a new report on that.

Cheers, Cole