fix for issue #156
Merge pull request #157 from Exa-Networks/3.4-stable

fix for issue #156
fix async issue with a socket blocking a reactor
Merge pull request #158 from Exa-Networks/3.4-stable

fix async issue with a socket blocking a reactor
fix posisble socket block
Merge pull request #159 from wmiltenburg/master

fix posisble socket block
Merge branch 'master' of github.com:Exa-Networks/exabgp into configuration
wip