Change default IPFS gateway to https://cloudflare-ipfs.com/ipfs/ (#158)

* ipfs.io often times out, thus switching to another default gateway

* bumped version

.env-example

@@ -25,7 +25,7 @@ HTTP_RPC_NODE=
 ## You can set the gateway URL of your own IPFS node in order to have data integrity verified
 ## (see https://docs.ipfs.io/concepts/content-addressing/) or use a public gateway you trust.
 ## If you have an IPFS node running locally, you may want to set this URL: http://localhost:8080/ipfs/
-#IPFS_GATEWAY="https://ipfs.io/ipfs/"
+#IPFS_GATEWAY="https://cloudflare-ipfs.com/ipfs/"
 
 ## When syncing, the sentinel makes range queries to the RPC node in order to get all relevant log events.
 ## A larger value here results in fewer queries, but RPC nodes have varying max limits set. If this value exceeds that, queries will fail.

package.json

@@ -1,6 +1,6 @@
 {
   "name": "superfluid-sentinel",
-  "version": "0.9.9",
+  "version": "0.9.10",
   "description": "Superfluid Sentinel",
   "main": "main.js",
   "scripts": {

src/config/configuration.js

@@ -39,7 +39,7 @@ class Config {
       this.ONLY_LISTED_TOKENS = config.only_listed_tokens === "true";
       this.TOGA_CONTRACT = config.toga_contract;
       this.FASTSYNC = config.fastsync !== "false";
-      this.IPFS_GATEWAY = process.env.IPFS_GATEWAY || "https://ipfs.io/ipfs/"
+      this.IPFS_GATEWAY = process.env.IPFS_GATEWAY || "https://cloudflare-ipfs.com/ipfs/"
       this.PIRATE = config.pirate === "true";
     } else {
       this.HTTP_RPC_NODE = process.env.HTTP_RPC_NODE;
@@ -63,7 +63,7 @@ class Config {
       this.METRICS = process.env.METRICS !== "false"; // default: true
       this.METRICS_PORT = process.env.METRICS_PORT || 3000;
       this.FASTSYNC = process.env.FASTSYNC !== "false";  // default: true
-      this.IPFS_GATEWAY = process.env.IPFS_GATEWAY || "https://ipfs.io/ipfs/";
+      this.IPFS_GATEWAY = process.env.IPFS_GATEWAY || "https://cloudflare-ipfs.com/ipfs/";
       this.PIRATE = process.env.PIRATE === "true"; // default: false
 
       // extra options: undoc and excluded from cmdline parser. Use .env file to change the defaults.