slight refactor of p2pnet
slight refactor of p2pnet

holiman/pyethereum,pipermerriam/pyethereum,inzem77/pyethereum,harlantwood/pyethereum,vaporry/pyethereum,ddworken/pyethereum,shahankhatch/pyethereum,ethereum/pyethereum,ebuchman/daoist_protocol,jnnk/pyethereum,karlfloersch/pyethereum,ethereum/pyethereum,pipermerriam/pyethereum,karlfloersch/pyethereum,ethermarket/pyethereum,ebuchman/daoist_protocol,shahankhatch/pyethereum,ckeenan/pyethereum,ethers/pyethereum