change prompt for connector selecting && fix typo

Change-Id: I25155e793b94160af041f5594a20aeed881ddad5
Merge branch 'master' of ssh://pomelo.com:29418/pomelo
fix tcp socket package bug

Change-Id: I0296aaedf156dd4279b2bbd486945968aac70c95
make invalid before filter be treated as error && fix typo

Change-Id: Ieb522b4475ada951d0f04a1ab7bb8ad77f0ade25
Merge remote-tracking branch 'origin/0.6.x'
Merge "Merge branch 'master' of ssh://pomelo.com:29418/pomelo"
Merge branch 'master' of ssh://pomelo.com:29418/pomelo