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p2p, p2p/discover: add signed ENR generation (#17753)

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This PR adds enode.LocalNode and integrates it into the p2p
subsystem. This new object is the keeper of the local node
record. For now, a new version of the record is produced every
time the client restarts. We'll make it smarter to avoid that in
the future.

There are a couple of other changes in this commit: discovery now
waits for all of its goroutines at shutdown and the p2p server
now closes the node database after discovery has shut down. This
fixes a leveldb crash in tests. p2p server startup is faster
because it doesn't need to wait for the external IP query
anymore.
This commit is contained in:
Felix Lange
2018-10-12 11:47:24 +02:00
committed by GitHub
parent dcae0d348b
commit 6f607de5d5
24 changed files with 979 additions and 278 deletions
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3
p2p/discv5/udp.go
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@ -230,7 +230,8 @@ type udp struct {
}
// ListenUDP returns a new table that listens for UDP packets on laddr.
func ListenUDP(priv *ecdsa.PrivateKey, conn conn, realaddr *net.UDPAddr, nodeDBPath string, netrestrict *netutil.Netlist) (*Network, error) {
func ListenUDP(priv *ecdsa.PrivateKey, conn conn, nodeDBPath string, netrestrict *netutil.Netlist) (*Network, error) {
realaddr := conn.LocalAddr().(*net.UDPAddr)
transport, err := listenUDP(priv, conn, realaddr)
if err != nil {
return nil, err