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+//
+// ip/icmp.hpp
+// ~~~~~~~~~~~
+//
+// Copyright (c) 2003-2024 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_ICMP_HPP
+#define ASIO_IP_ICMP_HPP
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1200)
+# pragma once
+#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
+
+#include "asio/detail/config.hpp"
+#include "asio/detail/socket_types.hpp"
+#include "asio/basic_raw_socket.hpp"
+#include "asio/ip/basic_endpoint.hpp"
+#include "asio/ip/basic_resolver.hpp"
+#include "asio/ip/basic_resolver_iterator.hpp"
+#include "asio/ip/basic_resolver_query.hpp"
+
+#include "asio/detail/push_options.hpp"
+
+namespace asio {
+namespace ip {
+
+/// Encapsulates the flags needed for ICMP.
+/**
+ * The asio::ip::icmp class contains flags necessary for ICMP sockets.
+ *
+ * @par Thread Safety
+ * @e Distinct @e objects: Safe.@n
+ * @e Shared @e objects: Safe.
+ *
+ * @par Concepts:
+ * Protocol, InternetProtocol.
+ */
+class icmp
+{
+public:
+ /// The type of a ICMP endpoint.
+ typedef basic_endpoint<icmp> endpoint;
+
+ /// Construct to represent the IPv4 ICMP protocol.
+ static icmp v4() noexcept
+ {
+ return icmp(ASIO_OS_DEF(IPPROTO_ICMP),
+ ASIO_OS_DEF(AF_INET));
+ }
+
+ /// Construct to represent the IPv6 ICMP protocol.
+ static icmp v6() noexcept
+ {
+ return icmp(ASIO_OS_DEF(IPPROTO_ICMPV6),
+ ASIO_OS_DEF(AF_INET6));
+ }
+
+ /// Obtain an identifier for the type of the protocol.
+ int type() const noexcept
+ {
+ return ASIO_OS_DEF(SOCK_RAW);
+ }
+
+ /// Obtain an identifier for the protocol.
+ int protocol() const noexcept
+ {
+ return protocol_;
+ }
+
+ /// Obtain an identifier for the protocol family.
+ int family() const noexcept
+ {
+ return family_;
+ }
+
+ /// The ICMP socket type.
+ typedef basic_raw_socket<icmp> socket;
+
+ /// The ICMP resolver type.
+ typedef basic_resolver<icmp> resolver;
+
+ /// Compare two protocols for equality.
+ friend bool operator==(const icmp& p1, const icmp& p2)
+ {
+ return p1.protocol_ == p2.protocol_ && p1.family_ == p2.family_;
+ }
+
+ /// Compare two protocols for inequality.
+ friend bool operator!=(const icmp& p1, const icmp& p2)
+ {
+ return p1.protocol_ != p2.protocol_ || p1.family_ != p2.family_;
+ }
+
+private:
+ // Construct with a specific family.
+ explicit icmp(int protocol_id, int protocol_family) noexcept
+ : protocol_(protocol_id),
+ family_(protocol_family)
+ {
+ }
+
+ int protocol_;
+ int family_;
+};
+
+} // namespace ip
+} // namespace asio
+
+#include "asio/detail/pop_options.hpp"
+
+#endif // ASIO_IP_ICMP_HPP