Get returns queryid.

RequestID middleware adds a unique request id to the request context.

WithCloudflareRequestID sets external id getter to get request id from cloudflare headers.

WithDefaultQueryID puts to the context default queryid.

WithExternalIDGetter sets external id getter.

WithExternalIDHeaders sets headers to get external id from.

WithHeaderName sets header name to put queryid to.

WithQueryID puts to the context queryid.

WithQueryIDGenerator sets queryid generator.