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Proxy/WS/README.md

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+<!--
+*** AUTO-GENERATED FILE ***
+This file is auto-generated by BambdaChecker.
+Please do not manually edit this file, or include any changes to this file in pull requests.
+-->
+# Proxy WebSockets
+Documentation: [Filtering the WebSockets history with Bambdas](https://portswigger.net/burp/documentation/desktop/tools/proxy/websockets-history/bambdas)
+## [ExtractPayloadToNotes.bambda](https://github.com/PortSwigger/bambdas/blob/main/Proxy/WS/ExtractPayloadToNotes.bambda)
+### Extracts JSON elements from the WebSocket message and displays it in the "Notes" column of the WebSocket History tab
+#### Author: Nick Coblentz (https://github.com/ncoblentz)
+```java
+//The bambda will search for json elements with the following keys. The keys below are just examples. Add the keys you want to include here:
+List<String> terms = List.of("target","error");
+
+if (!message.annotations().hasNotes()) {
+  StringBuilder builder = new StringBuilder();
+  String payload = utilities().byteUtils().convertToString(message.payload().getBytes());
+  terms.forEach(term -> {
+    Matcher m = Pattern.compile("\"" + term + "\":\"([^\"]+)\"", Pattern.CASE_INSENSITIVE).matcher(payload);
+    while (m.find() && m.groupCount() > 0) {
+      for (int i = 1; i <= m.groupCount(); i++) {
+        if (m.group(i) != null)
+          builder.append(term + ": " + m.group(i) + " ");
+      }
+    }
+  });
+  message.annotations().setNotes(builder.toString());
+}
+return true;
+
+```