Function mainFetch

deps/undici/undici.js:13679–13776

(fetchParams, recursive)

    }
    __name(fetching, "fetching");
    async function mainFetch(fetchParams, recursive) {
      try {
        const request = fetchParams.request;
        let response = null;
        if (request.localURLsOnly && !urlIsLocal(requestCurrentURL(request))) {
          response = makeNetworkError("local URLs only");
        }
        tryUpgradeRequestToAPotentiallyTrustworthyURL(request);
        if (requestBadPort(request) === "blocked") {
          response = makeNetworkError("bad port");
        }
        if (request.referrerPolicy === "") {
          request.referrerPolicy = request.policyContainer.referrerPolicy;
        }
        if (request.referrer !== "no-referrer") {
          request.referrer = determineRequestsReferrer(request);
        }
        if (response === null) {
          const currentURL = requestCurrentURL(request);
          if (
            // - request?s current URL?s origin is same origin with request?s origin,
            //   and request?s response tainting is "basic"
            sameOrigin(currentURL, request.url) && request.responseTainting === "basic" || // request?s current URL?s scheme is "data"
            currentURL.protocol === "data:" || // - request?s mode is "navigate" or "websocket"
            (request.mode === "navigate" || request.mode === "websocket")
          ) {
            request.responseTainting = "basic";
            response = await schemeFetch(fetchParams);
          } else if (request.mode === "same-origin") {
            response = makeNetworkError('request mode cannot be "same-origin"');
          } else if (request.mode === "no-cors") {
            if (request.redirect !== "follow") {
              response = makeNetworkError(
                'redirect mode cannot be "follow" for "no-cors" request'
              );
            } else {
              request.responseTainting = "opaque";
              response = await schemeFetch(fetchParams);
            }
          } else if (!urlIsHttpHttpsScheme(requestCurrentURL(request))) {
            response = makeNetworkError("URL scheme must be a HTTP(S) scheme");
          } else {
            request.responseTainting = "cors";
            response = await httpFetch(fetchParams);
          }
        }
        if (recursive) {
          return response;
        }
        if (response.status !== 0 && !response.internalResponse) {
          if (request.responseTainting === "cors") {
          }
          if (request.responseTainting === "basic") {
            response = filterResponse(response, "basic");
          } else if (request.responseTainting === "cors") {
            response = filterResponse(response, "cors");
          } else if (request.responseTainting === "opaque") {
            response = filterResponse(response, "opaque");