lnd.xprv/omnihandler.go

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package main
import (
"fmt"
"net"
"github.com/lightningnetwork/lnd/lnwire"
)
// it listens for incoming messages on the lndc and hands it over
// to the OmniHandler via omnichan
func LNDCReceiver(l net.Conn, id [16]byte, r *rpcServer) error {
for {
msg := make([]byte, 65535)
// fmt.Printf("read message from %x\n", l.RemoteLNId)
n, err := l.Read(msg)
if err != nil {
fmt.Printf("read error with %x: %s\n",
id, err.Error())
delete(r.CnMap, id)
return l.Close()
}
msg = msg[:n]
msg = append(id[:], msg...)
r.OmniChan <- msg
}
}
// handles stuff that comes in over the wire. Not user-initiated.
func OmniHandler(r *rpcServer) {
// var err error
var from [16]byte
for {
newdata := <-r.OmniChan // blocks here
if len(newdata) < 17 {
fmt.Printf("got too short message")
continue
}
copy(from[:], newdata[:16])
msg := newdata[16:]
msgid := msg[0]
_, ok := r.CnMap[from]
if !ok {
fmt.Printf("not connected to %x\n", from)
continue
}
// TEXT MESSAGE. SIMPLE
if msgid == lnwire.MSGID_TEXTCHAT { //it's text
fmt.Printf("msg from %x: %s\n", from, msg[1:])
continue
}
// Based on MSGID, hand it off to functions
fmt.Printf("Unknown message id byte %x", msgid)
continue
}
}