add get_addresses export

examples/ipfs_node/src/main.rs

@@ -45,12 +45,22 @@ fn main() {
 
     println!("ipfs node interface is\n{}", ipfs_node.get_interface());
 
+    let node_addresses = ipfs_node
+        .core_call(
+            "ipfs_node.wasm",
+            "get_addresses",
+            &[],
+        )
+        .unwrap();
+
+    println!("ipfs node addresses are:\n{:?}", node_addresses);
+
     let result = ipfs_node
         .rpc_call(
             &ipfs_rpc,
-            "put",
+            "get",
             &[IValue::String(
-                "QmdHsYnAvbrvXg3iwr6bLaqooVT31E8CMpZRWc9wX2Fbt8".to_string(),
+                "Qmf412jQZiuVUtdgnB36FXFX7xg5V6KEbSJ4dpQuhkLyfD".to_string(),
             )],
         )
         .unwrap();