[enh] #1254 Enhance the connection to outcoming WS2P peers

For connecting to outcoming WS2P peers, try to establish the connection 5 peers by 5 peers instead of just one by one.

The fix below just gather peers 5 by 5, in the order they were given by the priority sort. It does not change anything but making the connection trials parallel.

changed the description

changed target branch from 1.6_fix_1252 to 1.6

Well done, that works perfectly.

merged

mentioned in commit fc7428f9