{"record":{"id":"2afba2cf57e501de","repo":"redis/jedis","slug":"no-response-stream-available-from-server-code-c","errorCode":null,"errorMessage":"No response stream available from server (code=${code})","messagePattern":"No response stream available from server \\(code=(.+?)\\)","errorType":"http","errorClass":"IOException","httpStatus":null,"severity":"warning","filePath":"src/main/java/redis/clients/jedis/mcf/RedisRestAPI.java","lineNumber":250,"sourceCode":"      bdbInfoList.add(new RedisRestAPI.BdbInfo(bdbId, endpoints));\n    }\n\n    return bdbInfoList;\n  }\n\n  static String readResponse(HttpURLConnection connection) throws IOException {\n    InputStream inputStream = null;\n    try {\n      inputStream = connection.getInputStream();\n      if (inputStream == null) {\n        inputStream = connection.getErrorStream();\n      }\n    } catch (IOException e) {\n      // If there's an error, try to read from error stream\n      inputStream = connection.getErrorStream();\n    }\n    if (inputStream == null) {\n      throw new IOException(\n          \"No response stream available from server (code=\" + connection.getResponseCode() + \")\");\n    }\n\n    StringBuilder response = new StringBuilder();\n    byte[] buffer = new byte[1024];\n    int bytesRead;\n\n    while ((bytesRead = inputStream.read(buffer)) != -1) {\n      response.append(new String(buffer, 0, bytesRead, StandardCharsets.UTF_8));\n    }\n\n    inputStream.close();\n    return response.toString();\n  }\n\n  /**\n   * Information about a Redis Enterprise BDB (database) including its endpoints.\n   */","sourceCodeStart":232,"sourceCodeEnd":268,"githubUrl":"https://github.com/redis/jedis/blob/6dac31d4c224fb3257c216f3985340c6f500cdcb/src/main/java/redis/clients/jedis/mcf/RedisRestAPI.java#L232-L268","documentation":"readResponse() reads the HTTP response body of a REST API call. If reading the normal stream throws and connection.getErrorStream() is also null, there is no body to read, so it throws IOException(\"No response stream available from server (code=<code>)\"). This typically happens when the connection failed before any body was produced.","triggerScenarios":"Server closed the connection abruptly, request timed out at the server, HTTP error with empty body and null error stream, or network interruption between response code and body.","commonSituations":"Cluster node reset mid-request; firewall/proxy dropping keep-alive connections; REST endpoint under load closing connections without a response body.","solutions":["Retry the REST request (transient network issue) — ideally wrap RedisRestAPI calls in a retry with backoff","Increase connect/read timeouts (timeoutMs) if the server is slow","Check cluster/node health and logs for abrupt connection resets","Catch IOException and surface a clear message including the HTTP code from the exception text"],"exampleFix":"// before\nString body = redisRestAPI.bdbs(); // may throw on flaky network\n// after\nString body = retry(3, () -> redisRestAPI.bdbs()); // retry transient IOExceptions","handlingStrategy":"retry","validationCode":null,"typeGuard":null,"tryCatchPattern":"try { body = api.bdbs(); } catch (IOException e) { /* retry with backoff; treat as transient network failure */ }","preventionTips":["Set generous but bounded connect/read timeouts","Wrap REST calls in retry-with-backoff for transient IOExceptions","Monitor cluster node stability; investigate resets if the error recurs"],"tags":["http","network","io","rest-api"],"backgroundTag":"network-request-failed","analyzedSha":"6dac31d4c224fb3257c216f3985340c6f500cdcb","analyzedAt":"2026-09-08T04:55:01.204Z","contentChangedAt":"2026-09-08T04:55:01.204Z","schemaVersion":2},"datasetVersion":"2026-09-16T04:17:20.429Z"}