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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef NET_HTTP2_TOOLS_RANDOM_UTIL_H_
#define NET_HTTP2_TOOLS_RANDOM_UTIL_H_
#include <stddef.h>
#include <string>
#include "base/strings/string_piece.h"
namespace net {
namespace test {
class RandomBase;
// Returns a random string of length |len|, each character drawn uniformly and
// independently fom |alphabet|.
std::string RandomString(RandomBase* rng, int len, base::StringPiece alphabet);
// Returns a random integer in the range [lo, hi).
size_t GenerateUniformInRange(size_t lo, size_t hi, RandomBase* rng);
// Generate a string with the allowed character set for HTTP/2 / HPACK header
// names.
std::string GenerateHttp2HeaderName(size_t len, RandomBase* rng);
// Generate a string with the web-safe string character set of specified len.
std::string GenerateWebSafeString(size_t len, RandomBase* rng);
// Generate a string with the web-safe string character set of length [lo, hi).
std::string GenerateWebSafeString(size_t lo, size_t hi, RandomBase* rng);
// Returns a random integer in the range [0, max], with a bias towards producing
// lower numbers.
size_t GenerateRandomSizeSkewedLow(size_t max, RandomBase* rng);
} // namespace test
} // namespace net
#endif // NET_HTTP2_TOOLS_RANDOM_UTIL_H_
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