import type { IncomingMessage } from 'node:http'

type ProxyRequestLike = {
  setHeader: (name: string, value: string) => void
}

export const forwardOriginalHost = (
  proxyReq: ProxyRequestLike,
  req: IncomingMessage
) => {
  const host = req.headers.host
  if (typeof host === 'string' && host.trim()) {
    proxyReq.setHeader('host', host)
  }
}