/*
 *  Copyright 2018 The WebRTC Project Authors. All rights reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

#include "rtc_base/socket.h"

#include <algorithm>
#include <cstdint>
#include <span>

#include "api/units/timestamp.h"
#include "rtc_base/buffer.h"

namespace webrtc {

int Socket::RecvFrom(ReceiveBuffer& buffer) {
  static constexpr int BUF_SIZE = 64 * 1024;
  int64_t timestamp = -1;
  int len;
  buffer.payload.EnsureCapacity(BUF_SIZE);
  buffer.payload.SetData(BUF_SIZE, [&](std::span<uint8_t> payload) {
    len = RecvFrom(payload.data(), payload.size(), &buffer.source_address,
                   &timestamp);
    return std::max(len, 0);
  });
  if (!buffer.payload.empty() && timestamp != -1) {
    buffer.arrival_time = Timestamp::Micros(timestamp);
  }

  return len;
}

}  // namespace webrtc