Function resolveHost

src/config/env.ts:395–417

()

 * front DBHub with a reverse proxy or firewall.
 */
export function resolveHost(): { host: string; source: string } {
  const args = parseCommandLineArgs();

  // 1. Command line argument has highest priority.
  const cliHost = requireFlagValue("host", args, "127.0.0.1");
  if (cliHost !== undefined) {
    return { host: cliHost, source: "command line argument" };
  }

  // 2. Environment variable (trimmed; empty or whitespace-only is unset)
  //    Using DBHUB_HOST rather than generic HOST to avoid collisions — HOST is
  //    set by default in csh/tcsh, some CI systems, and Docker base images
  //    (often to the machine hostname), which would silently redirect binds.
  //    Trimming matches the --host flag's validation so `DBHUB_HOST="   "`
  //    doesn't get handed to listen() and fail with an obscure bind error.
  const envHost = process.env.DBHUB_HOST?.trim();
  if (envHost) {
    return { host: envHost, source: "environment variable" };
  }

  // 3. Default: bind all interfaces
  return { host: "0.0.0.0", source: "default" };
}

/**
 * Resolve the list of additional hostnames the HTTP transport accepts in the