projectdiscovery/nuclei · error

hostErrorsCache : host %s is unresponsive

Error message

hostErrorsCache : host %s is unresponsive

What it means

Error "hostErrorsCache : host %s is unresponsive" thrown in projectdiscovery/nuclei.

Source

Thrown at pkg/protocols/http/request.go:680

		}
		if gotErr != nil && requestErr == nil {
			requestErr = gotErr
		}
		if skip || gotErr != nil {
			request.options.Progress.SetRequests(uint64(generator.Remaining() + 1))
			break
		}
	}
	return requestErr
}

const drainReqSize = int64(8 * unitutils.Kilo)

// executeRequest executes the actual generated request and returns error if occurred
func (request *Request) executeRequest(input *contextargs.Context, generatedRequest *generatedRequest, previousEvent output.InternalEvent, hasInteractMatchers bool, processEvent protocols.OutputEventCallback, requestCount int) (err error) {
	// Check if hosts keep erroring
	if request.isUnresponsiveAddress(input) {
		return fmt.Errorf("hostErrorsCache : host %s is unresponsive", input.MetaInput.Input)
	}

	// wrap one more callback for validation and fixing event
	callback := func(event *output.InternalWrappedEvent) {
		// validateNFixEvent performs necessary validation on generated event
		// and attempts to fix it , this includes things like making sure
		// `template-id` is set , `request-url-pattern` is set etc
		request.validateNFixEvent(input, generatedRequest, err, event)
		processEvent(event)
	}

	request.setCustomHeaders(generatedRequest)

	var (
		resp            *http.Response
		fromCache       bool
		dumpedRequest   []byte
		projectCacheKey []byte

View on GitHub (pinned to 265b3a3dec)

When it happens

Trigger: Thrown at pkg/protocols/http/request.go:680 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of projectdiscovery/nuclei@265b3a3dec (2026-08-15). Data as JSON: /api/errors/4e6b45c7b19c7733. Report an issue: GitHub.