Merge branch 'release/0.9.0'

1 files changed, 23 insertions, 0 deletions

diff --git a/eth/peer_util.go b/eth/peer_util.go
new file mode 100644
index 000000000..6cf80cde2
--- /dev/null
+++ b/eth/peer_util.go
@@ -0,0 +1,23 @@
+package eth
+
+import (
+	"encoding/json"
+
+	"github.com/ethereum/go-ethereum/ethutil"
+)
+
+func WritePeers(path string, addresses []string) {
+	if len(addresses) > 0 {
+		data, _ := json.MarshalIndent(addresses, "", "    ")
+		ethutil.WriteFile(path, data)
+	}
+}
+
+func ReadPeers(path string) (ips []string, err error) {
+	var data string
+	data, err = ethutil.ReadAllFile(path)
+	if err != nil {
+		json.Unmarshal([]byte(data), &ips)
+	}
+	return
+}