Adicionado método para finalizar section ipfs

retrive.js

@@ -22,16 +22,24 @@ class IPFSFileManager {
       const fileData = Buffer.concat(chunks);
 
       // Save the file data to a local file
-      const filePath = `./retrievedFile.txt`;
+      const filePath = `./retrievedFile.pdf`;
       writeFileSync(filePath, fileData);
-
+      
+      this.closeIPFS();
       console.log('File retrieved from IPFS and saved as:', filePath);
     } catch (error) {
       console.error('Failed to retrieve the file from IPFS', error);
     }
   }
+
+  async closeIPFS() {
+    if (this.node) {
+      await this.node.stop();
+      console.log('IPFS node connection closed');
+    }
+  }
 }
 
-const cid = 'QmQzHxipWRHw8xmR8nwbiYasxQzKMh7rdwYwDxpyuoS9jX'; // Replace with the CID of the file you want to retrieve
+const cid = 'QmQgGxzWnzjCfouxRiozBiEG3wcsuJGWjtHjv3wurVbJ9s'; // Replace with the CID of the file you want to retrieve
 const ipfsFileManager = new IPFSFileManager(cid);
 ipfsFileManager.retrieveFileFromIPFS();