misc: both wifi.assoc and wifi.deauth will wait for wifi.hop.period*2 on the channel in order to improve key material capturing

modules/wifi/wifi_assoc.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"net"
 	"sort"
+	"time"
 
 	"github.com/bettercap/bettercap/network"
 	"github.com/bettercap/bettercap/packets"
@@ -115,6 +116,9 @@ func (mod *WiFiModule) startAssoc(to net.HardwareAddr) error {
 
 					mod.onChannel(ap.Channel(), func() {
 						mod.sendAssocPacket(ap)
+						// let's stick to this channel for a while in order
+						// to capture key material from the AP
+						time.Sleep(mod.hopPeriod * 2)
 					})
 				}
 			}