NationalSecurityAgency/ghidra · error · ElasticException

Error sending request

Error message

Error sending request: {message}

What it means

Thrown by ElasticConnection.executeRawStatement when an IOException occurs during the HTTP exchange (opening the connection, writing the body, reading getResponseCode/getInputStream). The original IOException message is wrapped. This covers transport failures: connection refused, reset, timeout, or stream read errors.

Solutions

1. Confirm the Elasticsearch host and port are correct and the service is running.
2. Test connectivity (telnet/curl) from the Ghidra host to the ES endpoint.
3. Check firewall/security-group rules and TLS configuration.
4. If transient, retry; if persistent, inspect the wrapped IOException message for the root cause.

IOException last;
for (int attempt = 0; attempt < 3; attempt++) {
    try { return conn.executeRawStatement(command, path, body); }
    catch (ElasticException e) {
        if (!(e.getCause() instanceof IOException)) throw e;
        last = (IOException) e.getCause();
    }
}
throw new ElasticException("ES unreachable after retries", last);

When it happens

Trigger: executeRawStatement where openConnection(), getOutputStream()/write, or getResponseCode/getInputStream throws IOException. Triggers: ES host unreachable, connection refused, socket timeout, TLS handshake failure, remote reset.

Common situations: Wrong host/port in hostURL; ES service down; firewall blocking the port; network partition; TLS certificate problems; client-side socket timeout too low; DNS resolution failure.

Related errors

• connection.getResponseMessage()
• Error parsing response
• {type} : {reason}
• Bad base64 encoding
• {}

AI-assisted analysis of NationalSecurityAgency/ghidra@d5f144c24d (2026-08-14). Data as JSON: /api/errors/3f78d7dfc085cb90. Report an issue: GitHub.

Appendix: source

Thrown at Ghidra/Features/BSim/src/main/java/ghidra/features/bsim/query/elastic/ElasticConnection.java:209

			connection = (HttpURLConnection) httpURL.openConnection();
			connection.setRequestMethod(command);
			connection.setRequestProperty("Content-Type", "application/json");
			connection.setDoOutput(true);
			try (Writer writer = new OutputStreamWriter(connection.getOutputStream())) {
				writer.write(body);
			}
			lastResponseCode = connection.getResponseCode();
			JsonObject resp = grabResponse(connection);
			if (!lastRequestSuccessful()) {
				throw new ElasticException(parseErrorJSON(resp));
			}
			return resp;
		}
		catch (URISyntaxException e) {
			throw new ElasticException("Error parsing URL: " + e.getMessage());
		}
		catch (IOException e) {
			throw new ElasticException("Error sending request: " + e.getMessage());
		}
		catch (JsonParseException e) {
			throw new ElasticException("Error parsing response: " + e.getMessage());
		}
		finally {
			if (connection != null) {
				connection.disconnect();
			}
		}

	}

	/**
	 * Execute an elasticsearch command where we are not expecting a response
	 * @param command is the type of the command
	 * @param path is the overarching {@code index/type/<command>}
	 * @param body is the JSON document describing the request
	 * @throws ElasticException for any problems with the connecting

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