Fix seed num one can not dial error

diff --git a/p2p/switch.go b/p2p/switch.go
index 861f8d0..5947225 100644 (file)
--- a/p2p/switch.go
+++ b/p2p/switch.go
@@ -331,7 +331,7 @@ func (sw *Switch) DialSeeds(addrBook *AddrBook, seeds []string) error {
        }
        //permute the list, dial them in random order.
        perm := rand.Perm(len(netAddrs))
-       for i := 0; i < len(perm); i++ {
+       for i := 0; i < len(perm); i+=2 {
                j := perm[i]
                sw.dialSeed(netAddrs[j])
        }