Add redis version check so errors are thrown if you use too old of a redis version

README.md

@@ -170,7 +170,7 @@ Inside the `config_example.json` file, ensure the default configuration will wor
 Explanation for each field:
 ````javascript
 {
-    /* Specifies the level of log output verbosity. Anything more severy than the level specified
+    /* Specifies the level of log output verbosity. Anything more severe than the level specified
        will also be logged. */
     "logLevel": "debug", //or "warning", "error"
     

libs/shareProcessor.js

@@ -14,6 +14,7 @@ value: a hash with..
  */
 
 
+
 module.exports = function(logger, poolConfig){
 
     var redisConfig = poolConfig.redis;
@@ -38,6 +39,31 @@ module.exports = function(logger, poolConfig){
         logger.error(logSystem, logComponent, logSubCat, 'Connection to redis database as been ended');
     });
 
+    connection.info(function(error, response){
+        if (error){
+            logger.error(logSystem, logComponent, logSubCat, 'Redis version check failed');
+            return;
+        }
+        var parts = response.split('\r\n');
+        var version;
+        var versionString;
+        for (var i = 0; i < parts.length; i++){
+            if (parts[i].indexOf(':') !== -1){
+                var valParts = parts[i].split(':');
+                if (valParts[0] === 'redis_version'){
+                    versionString = valParts[1];
+                    version = parseFloat(versionString);
+                    break;
+                }
+            }
+        }
+        if (!version){
+            logger.error(logSystem, logComponent, logSubCat, 'Could not detect redis version - but be super old or broken');
+        }
+        else if (version < 2.6){
+            logger.error(logSystem, logComponent, logSubCat, "You're using redis version " + versionString + " the minimum required version is 2.6. Follow the damn usage instructions...");
+        }
+    });
 
 
     this.handleShare = function(isValidShare, isValidBlock, shareData){