Initial Commit

include/asio/ip/impl/address_v4.ipp

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+//
+// ip/impl/address_v4.ipp
+// ~~~~~~~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2025 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#ifndef ASIO_IP_IMPL_ADDRESS_V4_IPP
+#define ASIO_IP_IMPL_ADDRESS_V4_IPP
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1200)
+# pragma once
+#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
+
+#include "asio/detail/config.hpp"
+#include <climits>
+#include <limits>
+#include <stdexcept>
+#include "asio/error.hpp"
+#include "asio/detail/socket_ops.hpp"
+#include "asio/detail/throw_error.hpp"
+#include "asio/detail/throw_exception.hpp"
+#include "asio/ip/address_v4.hpp"
+
+#include "asio/detail/push_options.hpp"
+
+namespace asio {
+namespace ip {
+
+address_v4::address_v4(const address_v4::bytes_type& bytes)
+{
+#if UCHAR_MAX > 0xFF
+  if (bytes[0] > 0xFF || bytes[1] > 0xFF
+      || bytes[2] > 0xFF || bytes[3] > 0xFF)
+  {
+    std::out_of_range ex("address_v4 from bytes_type");
+    asio::detail::throw_exception(ex);
+  }
+#endif // UCHAR_MAX > 0xFF
+
+  using namespace std; // For memcpy.
+  memcpy(&addr_.s_addr, bytes.data(), 4);
+}
+
+address_v4::address_v4(address_v4::uint_type addr)
+{
+  if ((std::numeric_limits<uint_type>::max)() > 0xFFFFFFFF)
+  {
+    std::out_of_range ex("address_v4 from unsigned integer");
+    asio::detail::throw_exception(ex);
+  }
+
+  addr_.s_addr = asio::detail::socket_ops::host_to_network_long(
+      static_cast<asio::detail::u_long_type>(addr));
+}
+
+address_v4::bytes_type address_v4::to_bytes() const noexcept
+{
+  using namespace std; // For memcpy.
+  bytes_type bytes;
+  memcpy(bytes.data(), &addr_.s_addr, 4);
+  return bytes;
+}
+
+address_v4::uint_type address_v4::to_uint() const noexcept
+{
+  return asio::detail::socket_ops::network_to_host_long(addr_.s_addr);
+}
+
+std::string address_v4::to_string() const
+{
+  asio::error_code ec;
+  char addr_str[asio::detail::max_addr_v4_str_len];
+  const char* addr =
+    asio::detail::socket_ops::inet_ntop(
+        ASIO_OS_DEF(AF_INET), &addr_, addr_str,
+        asio::detail::max_addr_v4_str_len, 0, ec);
+  if (addr == 0)
+    asio::detail::throw_error(ec);
+  return addr;
+}
+
+bool address_v4::is_loopback() const noexcept
+{
+  return (to_uint() & 0xFF000000) == 0x7F000000;
+}
+
+bool address_v4::is_unspecified() const noexcept
+{
+  return to_uint() == 0;
+}
+
+bool address_v4::is_multicast() const noexcept
+{
+  return (to_uint() & 0xF0000000) == 0xE0000000;
+}
+
+address_v4 make_address_v4(const char* str)
+{
+  asio::error_code ec;
+  address_v4 addr = make_address_v4(str, ec);
+  asio::detail::throw_error(ec);
+  return addr;
+}
+
+address_v4 make_address_v4(const char* str,
+    asio::error_code& ec) noexcept
+{
+  address_v4::bytes_type bytes;
+  if (asio::detail::socket_ops::inet_pton(
+        ASIO_OS_DEF(AF_INET), str, &bytes, 0, ec) <= 0)
+    return address_v4();
+  return address_v4(bytes);
+}
+
+address_v4 make_address_v4(const std::string& str)
+{
+  return make_address_v4(str.c_str());
+}
+
+address_v4 make_address_v4(const std::string& str,
+    asio::error_code& ec) noexcept
+{
+  return make_address_v4(str.c_str(), ec);
+}
+
+#if defined(ASIO_HAS_STRING_VIEW)
+
+address_v4 make_address_v4(string_view str)
+{
+  return make_address_v4(static_cast<std::string>(str));
+}
+
+address_v4 make_address_v4(string_view str,
+    asio::error_code& ec) noexcept
+{
+  return make_address_v4(static_cast<std::string>(str), ec);
+}
+
+#endif // defined(ASIO_HAS_STRING_VIEW)
+
+} // namespace ip
+} // namespace asio
+
+#include "asio/detail/pop_options.hpp"
+
+#endif // ASIO_IP_IMPL_ADDRESS_V4_IPP