Fix UDP scrape returning invalid info hashes (Fix webtorrent#97)

Author: feross

lib/client/udp-tracker.js

@@ -146,7 +146,7 @@ UDPTracker.prototype._request = function (opts) {
         }
         var infoHashes = (Array.isArray(opts.infoHash) && opts.infoHash.length > 0)
           ? opts.infoHash.map(function (infoHash) { return infoHash.toString('hex') })
-          : (opts.infoHash && opts.infoHash.toString('hex')) || self.client._infoHash
+          : [ (opts.infoHash && opts.infoHash.toString('hex')) || self.client._infoHash ]
 
         for (var i = 0, len = (msg.length - 8) / 12; i < len; i += 1) {
           self.client.emit('scrape', {

test/scrape.js

@@ -36,6 +36,7 @@ function testSingle (t, serverType) {
 
     client.on('scrape', function (data) {
       t.equal(data.announce, announceUrl)
+      t.equal(data.infoHash, parsedBitlove.infoHash)
       t.equal(typeof data.complete, 'number')
       t.equal(typeof data.incomplete, 'number')
       t.equal(typeof data.downloaded, 'number')
@@ -60,6 +61,7 @@ function clientScrapeStatic (t, serverType) {
     Client.scrape(announceUrl, infoHash1, function (err, data) {
       t.error(err)
       t.equal(data.announce, announceUrl)
+      t.equal(data.infoHash, infoHash1)
       t.equal(typeof data.complete, 'number')
       t.equal(typeof data.incomplete, 'number')
       t.equal(typeof data.downloaded, 'number')
@@ -84,11 +86,13 @@ function clientScrapeMulti (t, serverType) {
       t.error(err)
 
       t.equal(results[infoHash1].announce, announceUrl)
+      t.equal(results[infoHash1].infoHash, infoHash1)
       t.equal(typeof results[infoHash1].complete, 'number')
       t.equal(typeof results[infoHash1].incomplete, 'number')
       t.equal(typeof results[infoHash1].downloaded, 'number')
 
       t.equal(results[infoHash2].announce, announceUrl)
+      t.equal(results[infoHash2].infoHash, infoHash2)
       t.equal(typeof results[infoHash2].complete, 'number')
       t.equal(typeof results[infoHash2].incomplete, 'number')
       t.equal(typeof results[infoHash2].downloaded, 'number')