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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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18
p2p/nat/nat.go
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@ -129,21 +129,15 @@ func Map(m Interface, c chan struct{}, protocol string, extport, intport int, na
// ExtIP assumes that the local machine is reachable on the given
// external IP address, and that any required ports were mapped manually.
// Mapping operations will not return an error but won't actually do anything.
func ExtIP(ip net.IP) Interface {
if ip == nil {
panic("IP must not be nil")
}
return extIP(ip)
}
type ExtIP net.IP
type extIP net.IP
func (n extIP) ExternalIP() (net.IP, error) { return net.IP(n), nil }
func (n extIP) String() string { return fmt.Sprintf("ExtIP(%v)", net.IP(n)) }
func (n ExtIP) ExternalIP() (net.IP, error) { return net.IP(n), nil }
func (n ExtIP) String() string { return fmt.Sprintf("ExtIP(%v)", net.IP(n)) }
// These do nothing.
func (extIP) AddMapping(string, int, int, string, time.Duration) error { return nil }
func (extIP) DeleteMapping(string, int, int) error { return nil }
func (ExtIP) AddMapping(string, int, int, string, time.Duration) error { return nil }
func (ExtIP) DeleteMapping(string, int, int) error { return nil }
// Any returns a port mapper that tries to discover any supported
// mechanism on the local network.