v3.10.18: feat(#368) add config for HTTP keep alive via axios

src/util/BaseRestClient.ts

@@ -1,5 +1,6 @@
 /* eslint-disable @typescript-eslint/no-explicit-any */
 import axios, { AxiosRequestConfig, AxiosResponse, Method } from 'axios';
+import https from 'https';
 
 import {
   APIID,
@@ -137,6 +138,16 @@ export default abstract class BaseRestClient {
       },
     };
 
+    // If enabled, configure a https agent with keepAlive enabled
+    if (this.options.keepAlive) {
+      // For more advanced configuration, raise an issue on GitHub or use the "networkOptions"
+      // parameter to define a custom httpsAgent with the desired properties
+      this.globalRequestOptions.httpsAgent = new https.Agent({
+        keepAlive: true,
+        keepAliveMsecs: this.options.keepAliveMsecs,
+      });
+    }
+
     this.baseUrl = getRestBaseUrl(!!this.options.testnet, restOptions);
     this.key = this.options.key;
     this.secret = this.options.secret;