forks/go-ethereum
1
0
Fork 1
mirror of https://github.com/ethereum/go-ethereum.git synced 2026-07-28 15:46:43 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 3

p2p/nat: retry UPnP mapping several times

Browse source 
Changing ENR is a bit disruptive, so we better retry a few times.

Signed-off-by: Csaba Kiraly <csaba.kiraly@gmail.com>
This commit is contained in:
Csaba Kiraly 2025-04-03 13:48:49 +02:00
parent d4a32c82de
commit 54d124ba46
No known key found for this signature in database
GPG key ID: 0FE274EE8C95166E
1 changed files with 18 additions and 10 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

28
p2p/nat/natupnp.go
View file

@ -35,6 +35,9 @@ import (
const (
soapRequestTimeout = 3 * time.Second
rateLimit = 200 * time.Millisecond
retryInterval = 1 * time.Second // time to wait between retries
retryCount = 3 // number of retries after a failed AddPortMapping
randomCount = 3 // number of random ports to try
)
type upnp struct {
@ -115,21 +118,26 @@ func (n *upnp) addAnyPortMapping(protocol string, extport, intport int, ip net.I
return client.AddAnyPortMapping("", uint16(extport), protocol, uint16(intport), ip.String(), true, desc, lifetimeS)
}
// For IGDv1 and v1 services we should first try to add with extport.
err := n.client.AddPortMapping("", uint16(extport), protocol, uint16(intport), ip.String(), true, desc, lifetimeS)
if err == nil {
return uint16(extport), nil
}
log.Trace("Failed to add port mapping", "protocol", protocol, "extport", extport, "intport", intport, "err", err)
// If above fails, we retry with a random port.
// We retry several times because of possible port conflicts.
for i := 0; i < 3; i++ {
extport = n.randomPort()
for i := 0; i < retryCount+1; i++ {
err := n.client.AddPortMapping("", uint16(extport), protocol, uint16(intport), ip.String(), true, desc, lifetimeS)
if err == nil {
return uint16(extport), nil
}
log.Trace("Failed to add port mapping", "protocol", protocol, "extport", extport, "intport", intport, "err", err)
time.Sleep(retryInterval)
}
// If above fails, we retry with a random port.
// We retry several times because of possible port conflicts.
var err error
for i := 0; i < randomCount; i++ {
extport = n.randomPort()
err = n.client.AddPortMapping("", uint16(extport), protocol, uint16(intport), ip.String(), true, desc, lifetimeS)
if err == nil {
return uint16(extport), nil
}
log.Trace("Failed to add random port mapping", "protocol", protocol, "extport", extport, "intport", intport, "err", err)
time.Sleep(retryInterval)
}
return 0, err
}