A server network is created by using ConnectivityManger#reserveNetwork,
in which the app passes a specifier that sets:
reservationRequest = {
role = server
headerCompression = 6lowpan
remoteAddr = any (null)
psm = any
}
This specifier must subsequently match the blanket reservation offer,
and the reserved offer that is generated as a response:
blanketOffer = {
role = server
headerCompression = any
remoteAddr = any (null)
psm = any
}
reservedOffer = {
role = server
headerCompression = 6lowpan
remoteAddr = any (null)
psm = 0x81
}
And not the client network offer or a client network:
clientOffer = {
role = client
headerCompression = any
remoteAddr = any (null)
psm = any
}
clientNetwork = {
role = client
headerCompression = 6lowpan
remoteAddr = 01:02:03:04:05:06
psm = 0x81
}
Similarly the client request must match both the clientOffer and
clientNetweork, but not the reservedOffer (and technically
blanketOffer):
clientRequest = {
role = client
headerCompression = 6lowpan
remoteAddr = 01:02:03:04:05:06
psm = 0x81
}
Note, a request for TRANSPORT_BLUETOOTH with no specifier matches *any*
specifier per specifier matching semantics in NetworkCapabilities.
Test: L2capNetworkSpecifierTest
Change-Id: Ia16926b463a54530ae6e88278466e92ed82bf852
74a8f475b2