Hmmm.. how are you getting this to work with ccminer? My understanding is that the current wallet doesn't support getwork anymore because it's based on a later version of the qt wallet, and ccminer only supports getwork. I've also read the the asterisks are no longer supported either in the rpcallowip field.
When I follow your advice, I get:
HTTP request failed: Recv failure: Connection was reset
get_work failed, retry after 30 seconds
I had the same error message, but when I updated the wallet the message disappeared and the solo mining started.
Btw, I'm using ccminer skunksp-mod8.
I've just checked and it works fine. Here is the log:
C:\Users\test\Magnatum\skunksp-mod8>ccminer64.exe -a skunk -d 0 -o http://127.0.0.1:33334 -u user -p password -i 25
*** ccminer SkunkSPmod8 for nVidia GPUs from alexis78@github ***
*** Built with VC++ 2013 and nVidia CUDA SDK 7.
*** Based on tpruvot@github ccminer
*** Originally based on Christian Buchner and Christian H. project
*** Include some of the work of djm34, sp, tsiv and klausT.
[2017-08-30 16:43:00] NVML GPU monitoring enabled.
[2017-08-30 16:43:00] 1 miner thread started, using 'skunk' algorithm.
[2017-08-30 16:43:00] skunk block 11725, diff 1359.66, net 149.74GH/s
[2017-08-30 16:43:04] GPU#0:Intensity set to 25, 33554432 cuda threads
[2017-08-30 16:43:45] GPU#0:Gigabyte GTX 1060 6GB, 18.13MH/s
UPD:
As for the asterisks, I tried IP-address, but it didn't work, so I used * and it worked.