Major refactoring of the code base into Backend structure. Increase version number to Alpha 6 to prepare for the upcoming release.

Networks.go

@@ -35,25 +35,26 @@ type Networks struct {
 
 	// localFirewall indicates if a local firewall may drop unsolicited incoming packets
 	localFirewall bool
+
+	// backend
+	backend *Backend
 }
 
 //  ReplyTimeout is the round-trip timeout for message sequences.
 const ReplyTimeout = 20
 
-var networks *Networks
+func (backend *Backend) initMessageSequence() {
+	backend.networks = &Networks{backend: backend}
 
-func initMessageSequence() {
-	networks = &Networks{}
+	backend.networks.rawPacketsIncoming = make(chan networkWire, 1000) // buffer up to 1000 UDP packets before they get buffered by the OS network stack and eventually dropped
 
-	networks.rawPacketsIncoming = make(chan networkWire, 1000) // buffer up to 1000 UDP packets before they get buffered by the OS network stack and eventually dropped
+	backend.networks.Sequences = protocol.NewSequenceManager(ReplyTimeout)
 
-	networks.Sequences = protocol.NewSequenceManager(ReplyTimeout)
-
-	networks.ipListen = NewIPList()
+	backend.networks.ipListen = NewIPList()
 
 	// There is currently no suitable live firewall detection code. Instead, there is the config flag.
 	// Windows: If the user runs as non-admin, it can be assumed that the Windows Firewall creates a rule to drop unsolicited incoming packets.
 	// Changing the Windows Firewall (via netsh or otherwise) requires elevated admin rights.
 	// This flag will be passed on to other peers to indicate that uncontacted peers shall use the Traverse message for establishing connections.
-	networks.localFirewall = config.LocalFirewall
+	backend.networks.localFirewall = backend.Config.LocalFirewall
 }