//
// udp.cpp
// ~~~~~~~
//
// Copyright (c) 2003-2010 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)
//

// Disable autolinking for unit tests.
#if !defined(BOOST_ALL_NO_LIB)
#define BOOST_ALL_NO_LIB 1
#endif // !defined(BOOST_ALL_NO_LIB)

// Test that header file is self-contained.
#include <boost/asio/ip/udp.hpp>

#include <boost/bind.hpp>
#include <cstring>
#include <boost/asio/io_service.hpp>
#include <boost/asio/placeholders.hpp>
#include "../unit_test.hpp"
#include "../archetypes/io_control_command.hpp"

//------------------------------------------------------------------------------

// ip_udp_socket_compile test
// ~~~~~~~~~~~~~~~~~~~~~~~~~~
// The following test checks that all public member functions on the class
// ip::udp::socket compile and link correctly. Runtime failures are ignored.

namespace ip_udp_socket_compile {

void connect_handler(const boost::system::error_code&)
{
}

void send_handler(const boost::system::error_code&, std::size_t)
{
}

void receive_handler(const boost::system::error_code&, std::size_t)
{
}

void test()
{
  using namespace boost::asio;
  namespace ip = boost::asio::ip;

  try
  {
    io_service ios;
    char mutable_char_buffer[128] = "";
    const char const_char_buffer[128] = "";
    socket_base::message_flags in_flags = 0;
    socket_base::keep_alive socket_option;
    archetypes::io_control_command io_control_command;
    boost::system::error_code ec;

    // basic_datagram_socket constructors.

    ip::udp::socket socket1(ios);
    ip::udp::socket socket2(ios, ip::udp::v4());
    ip::udp::socket socket3(ios, ip::udp::v6());
    ip::udp::socket socket4(ios, ip::udp::endpoint(ip::udp::v4(), 0));
    ip::udp::socket socket5(ios, ip::udp::endpoint(ip::udp::v6(), 0));
    int native_socket1 = ::socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
    ip::udp::socket socket6(ios, ip::udp::v4(), native_socket1);

    // basic_io_object functions.

    io_service& ios_ref = socket1.io_service();
    (void)ios_ref;

    // basic_socket functions.

    ip::udp::socket::lowest_layer_type& lowest_layer = socket1.lowest_layer();
    (void)lowest_layer;

    const ip::udp::socket& socket7 = socket1;
    const ip::udp::socket::lowest_layer_type& lowest_layer2
      = socket7.lowest_layer();
    (void)lowest_layer2;

    socket1.open(ip::udp::v4());
    socket1.open(ip::udp::v6());
    socket1.open(ip::udp::v4(), ec);
    socket1.open(ip::udp::v6(), ec);

    int native_socket2 = ::socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
    socket1.assign(ip::udp::v4(), native_socket2);
    int native_socket3 = ::socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
    socket1.assign(ip::udp::v4(), native_socket3, ec);

    bool is_open = socket1.is_open();
    (void)is_open;

    socket1.close();
    socket1.close(ec);

    ip::udp::socket::native_type native_socket4 = socket1.native();
    (void)native_socket4;

    socket1.cancel();
    socket1.cancel(ec);

    bool at_mark1 = socket1.at_mark();
    (void)at_mark1;
    bool at_mark2 = socket1.at_mark(ec);
    (void)at_mark2;

    std::size_t available1 = socket1.available();
    (void)available1;
    std::size_t available2 = socket1.available(ec);
    (void)available2;

    socket1.bind(ip::udp::endpoint(ip::udp::v4(), 0));
    socket1.bind(ip::udp::endpoint(ip::udp::v6(), 0));
    socket1.bind(ip::udp::endpoint(ip::udp::v4(), 0), ec);
    socket1.bind(ip::udp::endpoint(ip::udp::v6(), 0), ec);

    socket1.connect(ip::udp::endpoint(ip::udp::v4(), 0));
    socket1.connect(ip::udp::endpoint(ip::udp::v6(), 0));
    socket1.connect(ip::udp::endpoint(ip::udp::v4(), 0), ec);
    socket1.connect(ip::udp::endpoint(ip::udp::v6(), 0), ec);

    socket1.async_connect(ip::udp::endpoint(ip::udp::v4(), 0), connect_handler);
    socket1.async_connect(ip::udp::endpoint(ip::udp::v6(), 0), connect_handler);

    socket1.set_option(socket_option);
    socket1.set_option(socket_option, ec);

    socket1.get_option(socket_option);
    socket1.get_option(socket_option, ec);

    socket1.io_control(io_control_command);
    socket1.io_control(io_control_command, ec);

    ip::udp::endpoint endpoint1 = socket1.local_endpoint();
    ip::udp::endpoint endpoint2 = socket1.local_endpoint(ec);

    ip::udp::endpoint endpoint3 = socket1.remote_endpoint();
    ip::udp::endpoint endpoint4 = socket1.remote_endpoint(ec);

    socket1.shutdown(socket_base::shutdown_both);
    socket1.shutdown(socket_base::shutdown_both, ec);

    // basic_datagram_socket functions.

    socket1.send(buffer(mutable_char_buffer));
    socket1.send(buffer(const_char_buffer));
    socket1.send(null_buffers());
    socket1.send(buffer(mutable_char_buffer), in_flags);
    socket1.send(buffer(const_char_buffer), in_flags);
    socket1.send(null_buffers(), in_flags);
    socket1.send(buffer(mutable_char_buffer), in_flags, ec);
    socket1.send(buffer(const_char_buffer), in_flags, ec);
    socket1.send(null_buffers(), in_flags, ec);

    socket1.async_send(buffer(mutable_char_buffer), send_handler);
    socket1.async_send(buffer(const_char_buffer), send_handler);
    socket1.async_send(null_buffers(), send_handler);
    socket1.async_send(buffer(mutable_char_buffer), in_flags, send_handler);
    socket1.async_send(buffer(const_char_buffer), in_flags, send_handler);
    socket1.async_send(null_buffers(), in_flags, send_handler);

    socket1.send_to(buffer(mutable_char_buffer),
        ip::udp::endpoint(ip::udp::v4(), 0));
    socket1.send_to(buffer(mutable_char_buffer),
        ip::udp::endpoint(ip::udp::v6(), 0));
    socket1.send_to(buffer(const_char_buffer),
        ip::udp::endpoint(ip::udp::v4(), 0));
    socket1.send_to(buffer(const_char_buffer),
        ip::udp::endpoint(ip::udp::v6(), 0));
    socket1.send_to(null_buffers(),
        ip::udp::endpoint(ip::udp::v4(), 0));
    socket1.send_to(null_buffers(),
        ip::udp::endpoint(ip::udp::v6(), 0));
    socket1.send_to(buffer(mutable_char_buffer),
        ip::udp::endpoint(ip::udp::v4(), 0), in_flags);
    socket1.send_to(buffer(mutable_char_buffer),
        ip::udp::endpoint(ip::udp::v6(), 0), in_flags);
    socket1.send_to(buffer(const_char_buffer),
        ip::udp::endpoint(ip::udp::v4(), 0), in_flags);
    socket1.send_to(buffer(const_char_buffer),
        ip::udp::endpoint(ip::udp::v6(), 0), in_flags);
    socket1.send_to(null_buffers(),
        ip::udp::endpoint(ip::udp::v4(), 0), in_flags);
    socket1.send_to(null_buffers(),
        ip::udp::endpoint(ip::udp::v6(), 0), in_flags);
    socket1.send_to(buffer(mutable_char_buffer),
        ip::udp::endpoint(ip::udp::v4(), 0), in_flags, ec);
    socket1.send_to(buffer(mutable_char_buffer),
        ip::udp::endpoint(ip::udp::v6(), 0), in_flags, ec);
    socket1.send_to(buffer(const_char_buffer),
        ip::udp::endpoint(ip::udp::v4(), 0), in_flags, ec);
    socket1.send_to(buffer(const_char_buffer),
        ip::udp::endpoint(ip::udp::v6(), 0), in_flags, ec);
    socket1.send_to(null_buffers(),
        ip::udp::endpoint(ip::udp::v4(), 0), in_flags, ec);
    socket1.send_to(null_buffers(),
        ip::udp::endpoint(ip::udp::v6(), 0), in_flags, ec);

    socket1.async_send_to(buffer(mutable_char_buffer),
        ip::udp::endpoint(ip::udp::v4(), 0), send_handler);
    socket1.async_send_to(buffer(mutable_char_buffer),
        ip::udp::endpoint(ip::udp::v6(), 0), send_handler);
    socket1.async_send_to(buffer(const_char_buffer),
        ip::udp::endpoint(ip::udp::v4(), 0), send_handler);
    socket1.async_send_to(buffer(const_char_buffer),
        ip::udp::endpoint(ip::udp::v6(), 0), send_handler);
    socket1.async_send_to(null_buffers(),
        ip::udp::endpoint(ip::udp::v4(), 0), send_handler);
    socket1.async_send_to(null_buffers(),
        ip::udp::endpoint(ip::udp::v6(), 0), send_handler);
    socket1.async_send_to(buffer(mutable_char_buffer),
        ip::udp::endpoint(ip::udp::v4(), 0), in_flags, send_handler);
    socket1.async_send_to(buffer(mutable_char_buffer),
        ip::udp::endpoint(ip::udp::v6(), 0), in_flags, send_handler);
    socket1.async_send_to(buffer(const_char_buffer),
        ip::udp::endpoint(ip::udp::v4(), 0), in_flags, send_handler);
    socket1.async_send_to(buffer(const_char_buffer),
        ip::udp::endpoint(ip::udp::v6(), 0), in_flags, send_handler);
    socket1.async_send_to(null_buffers(),
        ip::udp::endpoint(ip::udp::v4(), 0), in_flags, send_handler);
    socket1.async_send_to(null_buffers(),
        ip::udp::endpoint(ip::udp::v6(), 0), in_flags, send_handler);

    socket1.receive(buffer(mutable_char_buffer));
    socket1.receive(null_buffers());
    socket1.receive(buffer(mutable_char_buffer), in_flags);
    socket1.receive(null_buffers(), in_flags);
    socket1.receive(buffer(mutable_char_buffer), in_flags, ec);
    socket1.receive(null_buffers(), in_flags, ec);

    socket1.async_receive(buffer(mutable_char_buffer), receive_handler);
    socket1.async_receive(null_buffers(), receive_handler);
    socket1.async_receive(buffer(mutable_char_buffer), in_flags,
        receive_handler);
    socket1.async_receive(null_buffers(), in_flags, receive_handler);

    ip::udp::endpoint endpoint;
    socket1.receive_from(buffer(mutable_char_buffer), endpoint);
    socket1.receive_from(null_buffers(), endpoint);
    socket1.receive_from(buffer(mutable_char_buffer), endpoint, in_flags);
    socket1.receive_from(null_buffers(), endpoint, in_flags);
    socket1.receive_from(buffer(mutable_char_buffer), endpoint, in_flags, ec);
    socket1.receive_from(null_buffers(), endpoint, in_flags, ec);

    socket1.async_receive_from(buffer(mutable_char_buffer),
        endpoint, receive_handler);
    socket1.async_receive_from(null_buffers(),
        endpoint, receive_handler);
    socket1.async_receive_from(buffer(mutable_char_buffer),
        endpoint, in_flags, receive_handler);
    socket1.async_receive_from(null_buffers(),
        endpoint, in_flags, receive_handler);
  }
  catch (std::exception&)
  {
  }
}

} // namespace ip_udp_socket_compile

//------------------------------------------------------------------------------

// ip_udp_socket_runtime test
// ~~~~~~~~~~~~~~~~~~~~~~~~~~
// The following test checks the runtime operation of the ip::udp::socket class.

namespace ip_udp_socket_runtime {

void handle_send(size_t expected_bytes_sent,
    const boost::system::error_code& err, size_t bytes_sent)
{
  BOOST_CHECK(!err);
  BOOST_CHECK(expected_bytes_sent == bytes_sent);
}

void handle_recv(size_t expected_bytes_recvd,
    const boost::system::error_code& err, size_t bytes_recvd)
{
  BOOST_CHECK(!err);
  BOOST_CHECK(expected_bytes_recvd == bytes_recvd);
}

void test()
{
  using namespace std; // For memcmp and memset.
  using namespace boost::asio;
  namespace ip = boost::asio::ip;

  io_service ios;

  ip::udp::socket s1(ios, ip::udp::endpoint(ip::udp::v4(), 0));
  ip::udp::endpoint target_endpoint = s1.local_endpoint();
  target_endpoint.address(ip::address_v4::loopback());

  ip::udp::socket s2(ios);
  s2.open(ip::udp::v4());
  s2.bind(ip::udp::endpoint(ip::udp::v4(), 0));
  char send_msg[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
  s2.send_to(buffer(send_msg, sizeof(send_msg)), target_endpoint);

  char recv_msg[sizeof(send_msg)];
  ip::udp::endpoint sender_endpoint;
  size_t bytes_recvd = s1.receive_from(buffer(recv_msg, sizeof(recv_msg)),
      sender_endpoint);

  BOOST_CHECK(bytes_recvd == sizeof(send_msg));
  BOOST_CHECK(memcmp(send_msg, recv_msg, sizeof(send_msg)) == 0);

  memset(recv_msg, 0, sizeof(recv_msg));

  target_endpoint = sender_endpoint;
  s1.async_send_to(buffer(send_msg, sizeof(send_msg)), target_endpoint,
      boost::bind(handle_send, sizeof(send_msg),
        boost::asio::placeholders::error,
        boost::asio::placeholders::bytes_transferred));
  s2.async_receive_from(buffer(recv_msg, sizeof(recv_msg)), sender_endpoint,
      boost::bind(handle_recv, sizeof(recv_msg),
        boost::asio::placeholders::error,
        boost::asio::placeholders::bytes_transferred));

  ios.run();

  BOOST_CHECK(memcmp(send_msg, recv_msg, sizeof(send_msg)) == 0);
}

} // namespace ip_udp_socket_runtime

//------------------------------------------------------------------------------

// ip_udp_resolver_compile test
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// The following test checks that all public member functions on the class
// ip::udp::resolver compile and link correctly. Runtime failures are ignored.

namespace ip_udp_resolver_compile {

void resolve_handler(const boost::system::error_code&,
    boost::asio::ip::udp::resolver::iterator)
{
}

void test()
{
  using namespace boost::asio;
  namespace ip = boost::asio::ip;

  try
  {
    io_service ios;
    boost::system::error_code ec;
    ip::udp::resolver::query q(ip::udp::v4(), "localhost", "0");
    ip::udp::endpoint e(ip::address_v4::loopback(), 0);

    // basic_resolver constructors.

    ip::udp::resolver resolver(ios);

    // basic_io_object functions.

    io_service& ios_ref = resolver.io_service();
    (void)ios_ref;

    // basic_resolver functions.

    resolver.cancel();

    ip::udp::resolver::iterator iter1 = resolver.resolve(q);
    (void)iter1;

    ip::udp::resolver::iterator iter2 = resolver.resolve(q, ec);
    (void)iter2;

    ip::udp::resolver::iterator iter3 = resolver.resolve(e);
    (void)iter3;

    ip::udp::resolver::iterator iter4 = resolver.resolve(e, ec);
    (void)iter4;

    resolver.async_resolve(q, resolve_handler);

    resolver.async_resolve(e, resolve_handler);
  }
  catch (std::exception&)
  {
  }
}

} // namespace ip_udp_resolver_compile

//------------------------------------------------------------------------------

test_suite* init_unit_test_suite(int, char*[])
{
  test_suite* test = BOOST_TEST_SUITE("ip/udp");
  test->add(BOOST_TEST_CASE(&ip_udp_socket_compile::test));
  test->add(BOOST_TEST_CASE(&ip_udp_socket_runtime::test));
  test->add(BOOST_TEST_CASE(&ip_udp_resolver_compile::test));
  return test;
}