Allow customized headers

CONTRIBUTING.md

@@ -83,9 +83,6 @@ npm run docgen
 
 This updates `docs/` at the top level, where GitHub Pages looks for the docs.
 
-## Update `definitions.json`
-Use [this repo](https://github.com/RichardAH/xrpl-codec-gen) to generate a new `definitions.json` file from the rippled source code. Instructions are available in that README.
-
 ## Adding and removing packages
 
 `xrpl.js` uses `lerna` and `npm`'s workspaces features to manage a monorepo.

packages/ripple-binary-codec/test/fixtures/data-driven-tests.json

@@ -483,6 +483,13 @@
             "type": 5,
             "expected_hex": "5013"
         },
+        {
+            "type_name": "Hash256",
+            "name": "TicketID",
+            "nth_of_type": 20,
+            "type": 5,
+            "expected_hex": "5014"
+        },
         {
             "type_name": "Hash256",
             "name": "Digest",
@@ -714,6 +721,13 @@
             "type": 8,
             "expected_hex": "84"
         },
+        {
+            "type_name": "AccountID",
+            "name": "Target",
+            "nth_of_type": 7,
+            "type": 8,
+            "expected_hex": "87"
+        },
         {
             "type_name": "AccountID",
             "name": "RegularKey",

packages/xrpl/src/client/connection.ts

@@ -36,6 +36,7 @@ interface ConnectionOptions {
   // request timeout
   timeout: number
   connectionTimeout: number
+  headers?: { [key: string]: string }
 }
 
 /**
@@ -114,9 +115,15 @@ function createWebSocket(
 ): WebSocket | null {
   const options: WebSocket.ClientOptions = {}
   options.agent = getAgent(url, config)
+  if (config.headers) {
+    options.headers = config.headers
+  }
   if (config.authorization != null) {
     const base64 = Buffer.from(config.authorization).toString('base64')
-    options.headers = { Authorization: `Basic ${base64}` }
+    options.headers = {
+      ...options.headers,
+      Authorization: `Basic ${base64}`,
+    }
   }
   const optionsOverrides = _.omitBy(
     {