Depends on jNetwork v1.21+ (https://www.b4x.com/android/forum/threads/updates-to-internal-libaries.48274/post-1014241)
Usage example:
The socket will only accept connections from the current computer, useful for communication with other processes. No annoying firewall dialog will appear.
B4X:
Private Sub InitializeWithLoopback(Server As ServerSocket, EventName As String, vPort As Int)
Server.Initialize(-1, EventName)
Dim ia As JavaObject
ia = ia.InitializeStatic("java.net.InetAddress").RunMethod("getLoopbackAddress", Null)
Dim s As JavaObject = Server
Dim socket As JavaObject
socket.InitializeNewInstance("java.net.ServerSocket", Array(vPort, 50, ia))
s.SetField("ssocket", socket)
End SubUsage example:
B4X:
Dim srvr As ServerSocket
InitializeWithLoopback(srvr, "srvr", 12345)The socket will only accept connections from the current computer, useful for communication with other processes. No annoying firewall dialog will appear.