/*
 * © 2017 AgNO3 Gmbh & Co. KG
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of

	req.Header.Set(xhttp.MinioDeploymentID, xhttp.GlobalDeploymentID)

	// Set user-agent to indicate MinIO release
	// version to the configured log endpoint
	req.Header.Set("User-Agent", h.config.UserAgent)

	if h.config.AuthToken != "" {
		req.Header.Set("Authorization", h.config.AuthToken)
	}

	resp, err := h.client.Do(req)
	if err != nil {

// Copyright (c) 2015-2022 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful

func newSignV4ChunkedReader(req *http.Request, trailer bool) (io.ReadCloser, APIErrorCode) {
	cred, seedSignature, region, seedDate, errCode := calculateSeedSignature(req, trailer)
	if errCode != ErrNone {
		return nil, errCode
	}

	if trailer {
		// Discard anything unsigned.
		req.Trailer = make(http.Header)
		trailers := req.Header.Values(awsTrailerHeader)
		for _, key := range trailers {

func (s *xlStorage) ReadMultiple(ctx context.Context, req ReadMultipleReq, resp chan<- ReadMultipleResp) error {
	defer xioutil.SafeClose(resp)

	volumeDir := pathJoin(s.drivePath, req.Bucket)
	found := 0
	for _, f := range req.Files {
		if contextCanceled(ctx) {
			return ctx.Err()
		}
		r := ReadMultipleResp{
			Bucket: req.Bucket,
			Prefix: req.Prefix,
			File:   f,
		}

	req := logger.GetReqInfo(ctx)
	if req != nil {
		req.Lock()
		defer req.Unlock()
		req.Objects = make([]logger.ObjectVersion, 0, len(objects))
		for _, ov := range objects {
			req.Objects = append(req.Objects, logger.ObjectVersion{
				ObjectName: ov.ObjectName,
				VersionID:  ov.VersionID,
			})
		}
		return logger.SetReqInfo(ctx, req)
	}
	return ctx
}

     * @throws IOException
     */
    private int negotiateWrite(final CommonServerMessageBlockRequest req, final boolean setmid) throws IOException {
        if (setmid) {
            makeKey(req);
        } else {
            req.setMid(0);
            this.mid.set(1);
        }
        final int n = req.encode(this.sbuf, 4);
        Encdec.enc_uint32be(n & 0xFFFF, this.sbuf, 0); /* 4 byte ssn msg header */

	globalIAMSys.Init(ctx, objLayer, globalEtcdClient, 2*time.Second)

	req, err := newTestRequest(http.MethodGet, "http://example.com:9000/bucket/object", 0, nil)
	if err != nil {
		t.Fatal(err)
	}

	if err = signRequestV4(req, globalActiveCred.AccessKey, globalActiveCred.SecretKey); err != nil {
		t.Fatal(err)
	}

	_, owner, s3Err := checkKeyValid(req, globalActiveCred.AccessKey)
	if s3Err != ErrNone {

	clnt := &http.Client{
		Transport: transport,
	}
	req, err := http.NewRequest(http.MethodGet, u.String(), nil)
	if err != nil {
		return nil, AdminError{
			Code:       AdminUpdateUnexpectedFailure,
			Message:    err.Error(),
			StatusCode: http.StatusInternalServerError,
		}
	}

	req.Header.Set("User-Agent", getUserAgent(mode))

	resp, err := clnt.Do(req)
	if err != nil {

	req.Header.Set("Content-Type", contentTypeHdr)
	req.Header.Set("User-Agent", "Mozilla")

	// Since `apiRouter` satisfies `http.Handler` it has a ServeHTTP to execute the logic of the handler.
	// Call the ServeHTTP to execute the handler.
	apiRouter.ServeHTTP(rec, req)

	ctx, cancel := context.WithCancel(GlobalContext)
	defer cancel()

	// Now check if we actually wrote to backend (regardless of the response