Fixcontextleaks (#53)

* fix Context leaks

* move versiong into the separated file

* bump version

node.go

@@ -83,10 +83,6 @@ const (
 	defaultRecvQueueLength   int = 100
 	defaultFragmentationUnit     = 65000
 
-	versionOTP        int = 22
-	versionERTSprefix     = "ergo"
-	version               = "1.1.0"
-
 	// TLSmodeDisabled no TLS encryption
 	TLSmodeDisabled TLSmodeType = ""
 	// TLSmodeAuto generate self-signed certificate

process.go

@@ -206,6 +206,7 @@ func (p *Process) SendAfter(to interface{}, message etf.Term, after time.Duratio
 		// to prevent of timer leaks due to its not GCed until the timer fires
 		timer := time.NewTimer(after)
 		defer timer.Stop()
+		defer cancel()
 
 		select {
 		case <-ctx.Done():

registrar.go

@@ -175,6 +175,8 @@ func (r *registrar) UnregisterProcess(pid etf.Pid) {
 			}
 		}
 		r.mutexProcesses.Unlock()
+		// invoke cancel context to prevent memory leaks
+		p.Kill()
 		return
 	}
 	r.mutexProcesses.Unlock()

version.go

@@ -0,0 +1,7 @@
+package ergo
+
+const (
+	versionOTP        int = 22
+	versionERTSprefix     = "ergo"
+	version               = "1.2.4"
+)