Source:
<code>Object executeAndDecode(RequestTemplate template) throws Throwable { Request request = targetRequest(template); if (logLevel != Logger.Level.NONE) { logger.logRequest(metadata.configKey(), logLevel, request); } Response response; long start = System.nanoTime(); try { response = client.execute(request, options); } catch (IOException e) { if (logLevel != Logger.Level.NONE) { logger.logIOException(metadata.configKey(), logLevel, e, elapsedTime(start)); } throw errorExecuting(request, e); } long elapsedTime = TimeUnit.NANOSECONDS.toMillis(System.nanoTime() - start); boolean shouldClose = true; try { if (logLevel != Logger.Level.NONE) { response = logger.logAndRebufferResponse(metadata.configKey(), logLevel, response, elapsedTime); } if (Response.class == metadata.returnType()) { if (response.body() == null || response.body().isRepeatable()) { return response; } if (response.body().length() == null || response.body().length() > MAX_RESPONSE_BUFFER_SIZE || <START> response.body().length() < 0) { <END> shouldClose = false; return response; } byte[] bodyData = Util.toByteArray(response.body().asInputStream()); return Response.create(response.status(), response.reason(), response.headers(), bodyData); } if (response.status() >= 200 && response.status() < 300) { if (void.class == metadata.returnType()) { return null; } else { return decode(response); } } else if (decode404 && response.status() == 404) { return decoder.decode(response, metadata.returnType()); } else { throw errorDecoder.decode(metadata.configKey(), response); } } catch (IOException e) { if (logLevel != Logger.Level.NONE) { logger.logIOException(metadata.configKey(), logLevel, e, elapsedTime); } throw errorReading(request, response, e); } finally { if (shouldClose) { ensureClosed(response.body()); } } }</code><technical_language>I forbid this -1, is redundant semantics of null. ex. enforce in InputStreamBody ctor -1 a bug. this assigned -1 in feign</technical_language>

Target:
Object executeAndDecode(RequestTemplate template) throws Throwable { Request request = targetRequest(template); if (logLevel != Logger.Level.NONE) { logger.logRequest(metadata.configKey(), logLevel, request); } Response response; long start = System.nanoTime(); try { response = client.execute(request, options); } catch (IOException e) { if (logLevel != Logger.Level.NONE) { logger.logIOException(metadata.configKey(), logLevel, e, elapsedTime(start)); } throw errorExecuting(request, e); } long elapsedTime = TimeUnit.NANOSECONDS.toMillis(System.nanoTime() - start); boolean shouldClose = true; try { if (logLevel != Logger.Level.NONE) { response = logger.logAndRebufferResponse(metadata.configKey(), logLevel, response, elapsedTime); } if (Response.class == metadata.returnType()) { if (response.body() == null) { return response; } if (response.body().length() == null || response.body().length() > MAX_RESPONSE_BUFFER_SIZE) { shouldClose = false; return response; } byte[] bodyData = Util.toByteArray(response.body().asInputStream()); return Response.create(response.status(), response.reason(), response.headers(), bodyData); } if (response.status() >= 200 && response.status() < 300) { if (void.class == metadata.returnType()) { return null; } else { return decode(response); } } else if (decode404 && response.status() == 404) { return decoder.decode(response, metadata.returnType()); } else { throw errorDecoder.decode(metadata.configKey(), response); } } catch (IOException e) { if (logLevel != Logger.Level.NONE) { logger.logIOException(metadata.configKey(), logLevel, e, elapsedTime); } throw errorReading(request, response, e); } finally { if (shouldClose) { ensureClosed(response.body()); } } }