feat<cli>: added filterheader

Author: manavdesai27

bin/bcoin-cli

@@ -129,6 +129,22 @@ class CLI {
     this.log(filter);
   }
 
+  async getFilterHeader() {
+    let hash = this.config.str(0, '');
+
+    if (hash.length !== 64)
+      hash = parseInt(hash, 10);
+
+    const filterHeader = await this.client.getFilterHeader(hash);
+
+    if (!filterHeader) {
+      this.log('Filter header not found.');
+      return;
+    }
+
+    this.log(filterHeader);
+  }
+
   async estimateFee() {
     const blocks = this.config.uint(0, 1);
 
@@ -246,6 +262,9 @@ class CLI {
       case 'filter':
         await this.getFilter();
         break;
+      case 'filterheader':
+        await this.getFilterHeader();
+        break;
       case 'fee':
         await this.estimateFee();
         break;
@@ -263,6 +282,7 @@ class CLI {
         this.log('  $ coin [hash+index/address]: View coins.');
         this.log('  $ fee [target]: Estimate smart fee.');
         this.log('  $ filter [hash/height]: View filter.');
+        this.log('  $ filterheader [hash/height]: View filter header.');
         this.log('  $ header [hash/height]: View block header.');
         this.log('  $ info: Get server info.');
         this.log('  $ mempool: Get mempool snapshot.');

lib/client/node.js

@@ -164,9 +164,14 @@ class NodeClient extends Client {
    * @returns {Promise}
    */
 
-  getFilter(filter) {
-    assert(typeof filter === 'string' || typeof filter === 'number');
-    return this.get(`/filter/${filter}`);
+  getFilter(block) {
+    assert(typeof block === 'string' || typeof block === 'number');
+    return this.get(`/filter/${block}`);
+  }
+
+  getFilterHeader(block) {
+    assert(typeof block === 'string' || typeof block === 'number');
+    return this.get(`/filterheader/${block}`);
   }
 
   getBlockPeer(hash) {

lib/node/http.js

@@ -291,7 +291,8 @@ class HTTP extends Server {
 
       enforce(hash != null, 'Hash or height required.');
 
-      const filter = await this.node.getBlockFilter(hash);
+      const filterName = valid.str(1, 'BASIC').toUpperCase();
+      const filter = await this.node.getBlockFilter(hash, filterName);
 
       if (!filter) {
         res.json(404);
@@ -301,6 +302,24 @@ class HTTP extends Server {
       res.json(200, filter.toJSON());
     });
 
+    this.get('/filterheader/:block', async (req, res) => {
+      const valid = Validator.fromRequest(req);
+      const hash = valid.uintbrhash('block');
+
+      enforce(hash != null, 'Hash or height required.');
+
+      const filterName = valid.str(1, 'BASIC').toUpperCase();
+      const filterHeader = await this.node.
+        getBlockFilterHeader(hash, filterName);
+
+      if (!filterHeader) {
+        res.json(404);
+        return;
+      }
+
+      res.json(200, filterHeader.toJSON());
+    });
+
     // Mempool snapshot
     this.get('/mempool', async (req, res) => {
       enforce(this.mempool, 'No mempool available.');