add basic rpc client calling admin_peers

Signed-off-by: Jakub Sokołowski <jakub@status.im>

main.go

@@ -0,0 +1,29 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"github.com/ethereum/go-ethereum/rpc"
+	"log"
+)
+
+type rcpResp map[string]interface{}
+
+const serverAddr = "127.0.0.1"
+const serverPort = 8545
+
+func main() {
+	addr := fmt.Sprintf("http://%s:%d", serverAddr, serverPort)
+	c, err := rpc.DialHTTP(addr)
+	if err != nil {
+		log.Fatal("Failed to connec to RPC:", err)
+	}
+	fmt.Println("Connected: ", addr)
+	var rval interface{}
+	err = c.Call(&rval, "admin_peers")
+	if err != nil {
+		log.Fatal("Failed to make RPC call:", err)
+	}
+	pretty, err := json.MarshalIndent(rval, "", "  ")
+	fmt.Println("Response: ", string(pretty))
+}