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authorobscuren <geffobscura@gmail.com>2014-02-03 02:22:39 +0800
committerobscuren <geffobscura@gmail.com>2014-02-03 02:22:39 +0800
commit3f503ffc7f85287fc3716afb704f90a1a4e7b21b (patch)
tree0428a976a08d04c8791ce4e2764c4bb39ef5cdf7 /ethereum.go
parentae0d4eb7aa644b4c295d7a7cd28c38e92777a52f (diff)
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Implemented support for UPnP
Diffstat (limited to 'ethereum.go')
-rw-r--r--ethereum.go62
1 files changed, 62 insertions, 0 deletions
diff --git a/ethereum.go b/ethereum.go
index ae0f2eed0..83243e23c 100644
--- a/ethereum.go
+++ b/ethereum.go
@@ -8,6 +8,7 @@ import (
"github.com/ethereum/ethwire-go"
"log"
"net"
+ "strconv"
"sync"
"sync/atomic"
"time"
@@ -29,6 +30,7 @@ const (
type Ethereum struct {
// Channel for shutting down the ethereum
shutdownChan chan bool
+ quit chan bool
// DB interface
//db *ethdb.LDBDatabase
db *ethdb.MemDatabase
@@ -48,6 +50,8 @@ type Ethereum struct {
// Capabilities for outgoing peers
serverCaps Caps
+
+ nat NAT
}
func New(caps Caps) (*Ethereum, error) {
@@ -57,15 +61,30 @@ func New(caps Caps) (*Ethereum, error) {
return nil, err
}
+ /*
+ gateway := net.ParseIP("192.168.192.1")
+ nat := NewNatPMP(gateway)
+ port, err := nat.AddPortMapping("tcp", 30303, 30303, "", 60)
+ log.Println(port, err)
+ */
+
+ nat, err := Discover()
+ if err != nil {
+ log.Println("UPnP failed", err)
+ return nil, err
+ }
+
ethutil.Config.Db = db
nonce, _ := ethutil.RandomUint64()
ethereum := &Ethereum{
shutdownChan: make(chan bool),
+ quit: make(chan bool),
db: db,
peers: list.New(),
Nonce: nonce,
serverCaps: caps,
+ nat: nat,
}
ethereum.TxPool = ethchain.NewTxPool()
ethereum.TxPool.Speaker = ethereum
@@ -217,6 +236,8 @@ func (s *Ethereum) Start() {
go s.peerHandler(ln)
}
+ go s.upnpUpdateThread()
+
// Start the reaping processes
go s.ReapDeadPeerHandler()
@@ -245,6 +266,8 @@ func (s *Ethereum) Stop() {
p.Stop()
})
+ close(s.quit)
+
s.shutdownChan <- true
s.TxPool.Stop()
@@ -254,3 +277,42 @@ func (s *Ethereum) Stop() {
func (s *Ethereum) WaitForShutdown() {
<-s.shutdownChan
}
+
+func (s *Ethereum) upnpUpdateThread() {
+ // Go off immediately to prevent code duplication, thereafter we renew
+ // lease every 15 minutes.
+ timer := time.NewTimer(0 * time.Second)
+ lport, _ := strconv.ParseInt("30303", 10, 16)
+ first := true
+out:
+ for {
+ select {
+ case <-timer.C:
+ listenPort, err := s.nat.AddPortMapping("TCP", int(lport), int(lport), "eth listen port", 20*60)
+ if err != nil {
+ log.Println("can't add UPnP port mapping:", err)
+ break out
+ }
+ if first && err == nil {
+ externalip, err := s.nat.GetExternalAddress()
+ if err != nil {
+ log.Println("UPnP can't get external address:", err)
+ continue out
+ }
+ log.Println("Successfully bound via UPnP to", externalip, listenPort)
+ first = false
+ }
+ timer.Reset(time.Minute * 15)
+ case <-s.quit:
+ break out
+ }
+ }
+
+ timer.Stop()
+
+ if err := s.nat.DeletePortMapping("TCP", int(lport), int(lport)); err != nil {
+ log.Println("unable to remove UPnP port mapping:", err)
+ } else {
+ log.Println("succesfully disestablished UPnP port mapping")
+ }
+}