package http

import (
	"context"
	"net"
	"syscall"
	"time"
)

// CheckPortAvailability - check if given host and port is already in use.
// Note: The check method tries to listen on given port and closes it.
// It is possible to have a disconnected client in this tiny window of time.
func CheckPortAvailability(host, port string, opts TCPOptions) (err error) {

# Copyright 2026 The TensorFlow Authors. All Rights Reserved.
#
# 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,

import java.util.TreeMap;
import org.jspecify.annotations.Nullable;

/**
 * An implementation of {@link RangeSet} backed by a {@link TreeMap}.
 *
 * @author Louis Wasserman
 * @since 14.0
 */
@GwtIncompatible // uses NavigableMap
public class TreeRangeSet<C extends Comparable<?>> extends AbstractRangeSet<C>
    implements Serializable {

  @VisibleForTesting final NavigableMap<Cut<C>, Range<C>> rangesByLowerBound;

                           Version 2.0, January 2004
                        http://www.apache.org/licenses/

   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION

   1. Definitions.

      "License" shall mean the terms and conditions for use, reproduction,
      and distribution as defined by Sections 1 through 9 of this document.

      "Licensor" shall mean the copyright owner or entity authorized by

                           Version 2.0, January 2004
                        http://www.apache.org/licenses/

   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION

   1. Definitions.

      "License" shall mean the terms and conditions for use, reproduction,
      and distribution as defined by Sections 1 through 9 of this document.

      "Licensor" shall mean the copyright owner or entity authorized by

          }
        };

    // Add the mutable cell to the builder
    builder.put(mutableCell);

    // Mutate the value
    holder.string = "bar";

    // Make sure it uses the original value.
    assertEquals(ImmutableTable.of('K', 42, "foo"), builder.buildOrThrow());
  }

  public void testBuilder_noDuplicates() {
    ImmutableTable.Builder<Character, Integer, String> builder =

 *   <li>Applies managed dependency metadata (version, scope, optional flag, exclusions) to direct dependencies</li>
 *   <li>Removes managed dependencies that are not used by direct dependencies</li>
 *   <li>Retains only managed dependencies that appear in the resolved dependency tree</li>
 * </ul>
 * <p>
 * <b>Repository and Profile Pruning</b>: The consumer POM removal strategy:
 * <ul>

# 進階使用者指南 { #advanced-user-guide }

## 更多功能 { #additional-features }

主要的[教學 - 使用者指南](../tutorial/index.md) 應足以帶你快速瀏覽 **FastAPI** 的所有核心功能。

在接下來的章節中，你會看到其他選項、設定，以及更多功能。

/// tip

接下來的章節**不一定是「進階」**。

而且對於你的使用情境，解法很可能就在其中某一節。

///

## 先閱讀教學 { #read-the-tutorial-first }

只要掌握主要[教學 - 使用者指南](../tutorial/index.md) 的內容，你就能使用 **FastAPI** 的大多數功能。

/*
 * Copyright (C) 2019 Square, Inc.
 *
 * 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,

    SwaggerUIBundle.SwaggerUIStandalonePreset
]
```

These are **JavaScript** objects, not strings, so you can't pass them from Python code directly.