From 09a5ea8ba165a071b4439ae675563856616ceb01 Mon Sep 17 00:00:00 2001
From: "Michael Bradley, Jr" <michaelsbradleyjr@gmail.com>
Date: Mon, 29 Oct 2018 14:45:26 +0100
Subject: [PATCH] test if client version is supported, warn if not or can't
 determine

---
 lib/modules/blockchain_process/blockchain.js | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/lib/modules/blockchain_process/blockchain.js b/lib/modules/blockchain_process/blockchain.js
index b1723cf3a..419b8a44b 100644
--- a/lib/modules/blockchain_process/blockchain.js
+++ b/lib/modules/blockchain_process/blockchain.js
@@ -305,6 +305,13 @@ Blockchain.prototype.isClientInstalled = function (callback) {
     if (err || !stdout || stderr.indexOf("not found") >= 0 || stdout.indexOf("not found") >= 0) {
       return callback(__('Ethereum client bin not found:') + ' ' + this.client.getBinaryPath());
     }
+    const parsedVersion = this.client.parseVersion(stdout);
+    const supported = this.client.isSupportedVersion(parsedVersion);
+    if (supported === undefined) {
+      this.logger.error((__('WARNING! Ethereum client version could not be determined or compared with version range') + ' ' + this.client.versSupported + __(', for best results please use a supported version')).yellow);
+    } else if (!supported) {
+      this.logger.error((__('WARNING! Ethereum client version unsupported, for best results please use a version in range') + ' ' + this.client.versSupported).yellow);
+    }
     callback();
   });
 };