Update to fix breaking change in ipfs v0.5.0

(pin update switched to multihash rather than multiaddr return)

Author: ianopolous

lib/multiaddr.jar

@@ -206,10 +206,10 @@ public List<Multihash> rm(Multihash hash, boolean recursive) throws IOException
             return ((List<Object>) json.get("Pins")).stream().map(x -> Cid.decode((String) x)).collect(Collectors.toList());
         }
 
-        public List<MultiAddress> update(Multihash existing, Multihash modified, boolean unpin) throws IOException {
+        public List<Multihash> update(Multihash existing, Multihash modified, boolean unpin) throws IOException {
             return ((List<Object>)((Map)retrieveAndParse("pin/update?stream-channels=true&arg=" + existing + "&arg=" + modified + "&unpin=" + unpin)).get("Pins"))
                     .stream()
-                    .map(x -> new MultiAddress((String) x))
+                    .map(x -> Cid.decode((String) x))
                     .collect(Collectors.toList());
         }
     }
@@ -767,7 +767,7 @@ private InputStream retrieveStream(String path) throws IOException {
     }
 
     private static InputStream getStream(URL target, int timeout) throws IOException {
-        HttpURLConnection conn = configureConnection(target, "GET", timeout);
+        HttpURLConnection conn = configureConnection(target, "POST", timeout);
         return conn.getInputStream();
     }
 

src/main/java/io/ipfs/api/IPFS.java

@@ -248,7 +248,7 @@ public void pinUpdate() throws IOException {
 
         CborObject.CborList root2 = new CborObject.CborList(Arrays.asList(new CborObject.CborMerkleLink(hashChild1), new CborObject.CborLong(42)));
         MerkleNode root2Res = ipfs.block.put(Collections.singletonList(root2.toByteArray()), Optional.of("cbor")).get(0);
-        List<MultiAddress> update = ipfs.pin.update(root1Res.hash, root2Res.hash, true);
+        List<Multihash> update = ipfs.pin.update(root1Res.hash, root2Res.hash, true);
 
         Map<Multihash, Object> ls = ipfs.pin.ls(IPFS.PinType.all);
         boolean childPresent = ls.containsKey(hashChild1);
@@ -282,7 +282,7 @@ public void rawLeafNodePinUpdate() throws IOException {
                 new CborObject.CborLong(42))
         );
         MerkleNode root2Res = ipfs.block.put(Collections.singletonList(root2.toByteArray()), Optional.of("cbor")).get(0);
-        List<MultiAddress> update = ipfs.pin.update(root1Res.hash, root2Res.hash, false);
+        List<Multihash> update = ipfs.pin.update(root1Res.hash, root2Res.hash, false);
     }
 
     @Test