//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

// Package lock - implements filesystem locking wrappers around an
// open file descriptor.
package lock

import (
	"errors"
	"os"
	"sync"
)

// ErrAlreadyLocked is returned if the underlying fd is already locked.
var ErrAlreadyLocked = errors.New("file already locked")

Das ist natürlich nicht optimal und man würde das nicht in der Produktion machen.

In der Produktion hätten Sie eine der oben genannten Optionen.

Aber es ist der einfachste Weg, sich auf die Serverseite von WebSockets zu konzentrieren und ein funktionierendes Beispiel zu haben:

{* ../../docs_src/websockets/tutorial001_py39.py hl[2,6:38,41:43] *}

import java.nio.charset.Charset;
import java.util.Iterator;
import java.util.stream.Stream;

/**
 * A destination to which characters can be written, such as a text file. Unlike a {@link Writer}, a
 * {@code CharSink} is not an open, stateful stream that can be written to and closed. Instead, it
 * is an immutable <i>supplier</i> of {@code Writer} instances.
 *
 * <p>{@code CharSink} provides two kinds of methods:
 *
 * <ul>

import java.io.IOException;

import jcifs.dcerpc.DcerpcHandle;
import jcifs.dcerpc.rpc;
import jcifs.smb.SmbException;

/**
 * Handle for Security Account Manager (SAM) domain operations.
 * This class represents an open handle to a SAM domain and provides
 * operations for managing domain users, groups, and aliases.
 */
public class SamrDomainHandle extends rpc.policy_handle implements AutoCloseable {

    private final DcerpcHandle handle;

/*
 * Copyright (C) 2011 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,

	keys := store.List()

	if len(keys) != 10 {
		t.Fatalf("List() Expected: 10, got %d", len(keys))
	}

	// re-open
	store, err = setUpQueueStore(queueDir, 10)
	if err != nil {
		t.Fatal("Failed to create a queue store ", err)
	}
	keys = store.List()

	if len(keys) != 10 {
		t.Fatalf("List() Expected: 10, got %d", len(keys))
	}
	if len(keys) != store.Len() {

        final String p = props.getProperty(key);
        if (p != null) {
            final StringTokenizer tok = new StringTokenizer(p, delim);
            final int len = tok.countTokens();
            final InetAddress[] arr = new InetAddress[len];
            for (int i = 0; i < len; i++) {
                final String addr = tok.nextToken();
                try {
                    arr[i] = InetAddress.getByName(addr);

        @Override
        int readSetupWireFormat(byte[] buffer, int bufferIndex, int len) {
            return 0;
        }

        @Override
        int readParametersWireFormat(byte[] buffer, int bufferIndex, int len) {
            return 0;
        }

        @Override
        int readDataWireFormat(byte[] buffer, int bufferIndex, int len) {
            return 0;
        }

        setField(cmd, "unlocks", new LockingAndXRange[] { unlock });
        setField(cmd, "largeFile", false);

        byte[] buffer = new byte[20];
        int len = cmd.writeParameterWordsWireFormat(buffer, 0);
        assertEquals(-12, len, "writeParameterWordsWireFormat should write 12 Bytes");
        // Validate parameter bytes using reflection since fields are private

This section describes how to generate a self-signed certificate using various tools:

* 3.1 [Use certgen to Generate a Certificate](#using-go)
* 3.2 [Use OpenSSL to Generate a Certificate](#using-open-ssl)
* 3.3 [Use OpenSSL (with IP address) to Generate a Certificate](#using-open-ssl-with-ip)
* 3.4 [Use GnuTLS (for Windows) to Generate a Certificate](#using-gnu-tls)

**Note:**

* MinIO only supports keys and certificates in PEM format on Linux and Windows.