Fix object.patch to use http request body

Author: ianopolous

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

@@ -227,13 +227,11 @@ public MerkleNode patch(Multihash base, String command, Optional<byte[]> data, O
                 case "set-data":
                     if (!data.isPresent())
                         throw new IllegalStateException("set-data requires data!");
-                    targetPath += "&arg="+new String(data.get());
-                    return MerkleNode.fromJSON(retrieveMap(targetPath));
+                    return MerkleNode.fromJSON(postMap(targetPath, data.get(), Collections.EMPTY_MAP));
                 case "append-data":
                     if (!data.isPresent())
                         throw new IllegalStateException("append-data requires data!");
-                    targetPath += "&arg="+new String(data.get());
-                    return MerkleNode.fromJSON(retrieveMap(targetPath));
+                    return MerkleNode.fromJSON(postMap(targetPath, data.get(), Collections.EMPTY_MAP));
                 default:
                     throw new IllegalStateException("Unimplemented");
             }
@@ -431,6 +429,11 @@ private static byte[] get(URL target) throws IOException {
         return resp.toByteArray();
     }
 
+    private Map postMap(String path, byte[] body, Map<String, String> headers) throws IOException {
+        URL target = new URL("http", host, port, version + path);
+        return (Map) JSONParser.parse(new String(post(target, body, headers)));
+    }
+
     private static byte[] post(URL target, byte[] body, Map<String, String> headers) throws IOException {
         HttpURLConnection conn = (HttpURLConnection) target.openConnection();
         for (String key: headers.keySet())

src/test/java/org/ipfs/api/Test.java

@@ -98,7 +98,9 @@ public void objectPatch() {
                 throw new RuntimeException("Adding not inverse of removing link!");
 
             // data tests
-            byte[] data = "somerandomdata".getBytes();
+            byte[] data = "some random textual data".getBytes();
+//            byte[] data = new byte[1024];
+//            new Random().nextBytes(data);
             MerkleNode patched = ipfs.object.patch(base, "set-data", Optional.of(data), Optional.empty(), Optional.empty());
             MerkleNode patchedResult = ipfs.object.get(patched.hash);
             if (!Arrays.equals(patchedResult.data.get(), data))