added telemetry

src/client/nano-client.ts

@@ -486,6 +486,21 @@ export class NanoClient {
         });
     }
 
+    /**
+     * Return metrics from other nodes on the network. By default,
+     * returns a summarized view of the whole network.\
+     * Networking - node telemetry contains more detailed information on the protocol implementation of telemetry.
+     * * @param {body} TelemetryBody - https://docs.nano.org/commands/rpc-protocol/#telemetry
+     */
+    telemetry(body?: { raw: false }): Promise<RPC.TelemetryResponse>;
+    telemetry(body: { raw: true }): Promise<RPC.TelemetryRawResponse>;
+    telemetry(body: { address: string; port: number; raw?: boolean }): Promise<RPC.TelemetryAddressPortResponse>;
+    telemetry(
+        body?
+    ): Promise<RPC.TelemetryResponse | RPC.TelemetryRawResponse | RPC.TelemetryAddressPortResponse> {
+        return this._send('telemetry', body ?? {}) as any;
+    }
+
     /**
      * Check whether account is a valid account number using checksum.
      * @param {string} account - The NANO account address.

src/types/rpc-response.ts

@@ -242,3 +242,36 @@ export type WorkGenerateResponse = {
     multiplier: string;
     hash: string;
 };
+
+export type TelemetryResponse = {
+    block_count: string;
+    cemented_count: string;
+    unchecked_count: string;
+    account_count: string;
+    bandwidth_cap: string;
+    peer_count: string;
+    protocol_version: string;
+    uptime: string;
+    genesis_block: string;
+    major_version: string;
+    minor_version: string;
+    patch_version: string;
+    pre_release_version: string;
+    maker: string;
+    timestamp: string;
+    active_difficulty: string;
+};
+
+export type TelemetryRawResponse = {
+    metrics: (TelemetryResponse & {
+        signature: string;
+        node_id: string;
+        address: string;
+        port: string;
+    })[];
+};
+
+export type TelemetryAddressPortResponse = TelemetryResponse & {
+    node_id: string;
+    signature: string;
+};