gateway-ipns bugfix: gateways are now correctly randomized from the...

gateway-ipns bugfix: gateways are now correctly randomized from the pre-configured list, without affecting the list itself

plugins/gateway-ipns.js

@@ -52,19 +52,27 @@ Promise.any = async (promises) => {
  */
 let fetchContentFromGatewayIPNS = (url) => {
     
+    console.log(`Samizdat: pre-configured gateways:\n  ${gateways.join('\n  ')}`)
         
     // we're going to try a random gateway and building an URL of the form:
     // https://<gateway_address>/<ipnsPubkey>/<rest_of_URL>
     var ipnsUrl = ipnsPubKey + url.replace(/https?:\/\/[^/]+/, '')
     
     // pick 3 gateways, at random
-    var useGateways = new Array()
-    while (useGateways.length < 3) {
-        // put in the address while we're at it
-        useGateways.push(
-            gateways
-                .splice(Math.floor(Math.random() * gateways.length), 1)[0] + ipnsUrl
-        )
+    var sourceGateways = [...gateways]
+    // if we have fewer than 3 gateways configured, use all of them
+    if (sourceGateways.length <= 3) {
+        var useGateways = sourceGateways
+    // otherwise get 3 at random
+    } else {
+        var useGateways = new Array()
+        while (useGateways.length < 3) {
+            // put in the address while we're at it
+            useGateways.push(
+                sourceGateways
+                    .splice(Math.floor(Math.random() * sourceGateways.length), 1)[0] + ipnsUrl
+            )
+        }
     }
     
     // debug log