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Diffstat (limited to '3rdparty/asio/src/examples/cpp03/icmp/ping.cpp')
-rw-r--r-- | 3rdparty/asio/src/examples/cpp03/icmp/ping.cpp | 161 |
1 files changed, 0 insertions, 161 deletions
diff --git a/3rdparty/asio/src/examples/cpp03/icmp/ping.cpp b/3rdparty/asio/src/examples/cpp03/icmp/ping.cpp deleted file mode 100644 index 3a1d278415d..00000000000 --- a/3rdparty/asio/src/examples/cpp03/icmp/ping.cpp +++ /dev/null @@ -1,161 +0,0 @@ -// -// ping.cpp -// ~~~~~~~~ -// -// Copyright (c) 2003-2016 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) -// - -#include <asio.hpp> -#include <boost/bind.hpp> -#include <istream> -#include <iostream> -#include <ostream> - -#include "icmp_header.hpp" -#include "ipv4_header.hpp" - -using asio::ip::icmp; -using asio::deadline_timer; -namespace posix_time = boost::posix_time; - -class pinger -{ -public: - pinger(asio::io_context& io_context, const char* destination) - : resolver_(io_context), socket_(io_context, icmp::v4()), - timer_(io_context), sequence_number_(0), num_replies_(0) - { - destination_ = *resolver_.resolve(icmp::v4(), destination, "").begin(); - - start_send(); - start_receive(); - } - -private: - void start_send() - { - std::string body("\"Hello!\" from Asio ping."); - - // Create an ICMP header for an echo request. - icmp_header echo_request; - echo_request.type(icmp_header::echo_request); - echo_request.code(0); - echo_request.identifier(get_identifier()); - echo_request.sequence_number(++sequence_number_); - compute_checksum(echo_request, body.begin(), body.end()); - - // Encode the request packet. - asio::streambuf request_buffer; - std::ostream os(&request_buffer); - os << echo_request << body; - - // Send the request. - time_sent_ = posix_time::microsec_clock::universal_time(); - socket_.send_to(request_buffer.data(), destination_); - - // Wait up to five seconds for a reply. - num_replies_ = 0; - timer_.expires_at(time_sent_ + posix_time::seconds(5)); - timer_.async_wait(boost::bind(&pinger::handle_timeout, this)); - } - - void handle_timeout() - { - if (num_replies_ == 0) - std::cout << "Request timed out" << std::endl; - - // Requests must be sent no less than one second apart. - timer_.expires_at(time_sent_ + posix_time::seconds(1)); - timer_.async_wait(boost::bind(&pinger::start_send, this)); - } - - void start_receive() - { - // Discard any data already in the buffer. - reply_buffer_.consume(reply_buffer_.size()); - - // Wait for a reply. We prepare the buffer to receive up to 64KB. - socket_.async_receive(reply_buffer_.prepare(65536), - boost::bind(&pinger::handle_receive, this, _2)); - } - - void handle_receive(std::size_t length) - { - // The actual number of bytes received is committed to the buffer so that we - // can extract it using a std::istream object. - reply_buffer_.commit(length); - - // Decode the reply packet. - std::istream is(&reply_buffer_); - ipv4_header ipv4_hdr; - icmp_header icmp_hdr; - is >> ipv4_hdr >> icmp_hdr; - - // We can receive all ICMP packets received by the host, so we need to - // filter out only the echo replies that match the our identifier and - // expected sequence number. - if (is && icmp_hdr.type() == icmp_header::echo_reply - && icmp_hdr.identifier() == get_identifier() - && icmp_hdr.sequence_number() == sequence_number_) - { - // If this is the first reply, interrupt the five second timeout. - if (num_replies_++ == 0) - timer_.cancel(); - - // Print out some information about the reply packet. - posix_time::ptime now = posix_time::microsec_clock::universal_time(); - std::cout << length - ipv4_hdr.header_length() - << " bytes from " << ipv4_hdr.source_address() - << ": icmp_seq=" << icmp_hdr.sequence_number() - << ", ttl=" << ipv4_hdr.time_to_live() - << ", time=" << (now - time_sent_).total_milliseconds() << " ms" - << std::endl; - } - - start_receive(); - } - - static unsigned short get_identifier() - { -#if defined(ASIO_WINDOWS) - return static_cast<unsigned short>(::GetCurrentProcessId()); -#else - return static_cast<unsigned short>(::getpid()); -#endif - } - - icmp::resolver resolver_; - icmp::endpoint destination_; - icmp::socket socket_; - deadline_timer timer_; - unsigned short sequence_number_; - posix_time::ptime time_sent_; - asio::streambuf reply_buffer_; - std::size_t num_replies_; -}; - -int main(int argc, char* argv[]) -{ - try - { - if (argc != 2) - { - std::cerr << "Usage: ping <host>" << std::endl; -#if !defined(ASIO_WINDOWS) - std::cerr << "(You may need to run this program as root.)" << std::endl; -#endif - return 1; - } - - asio::io_context io_context; - pinger p(io_context, argv[1]); - io_context.run(); - } - catch (std::exception& e) - { - std::cerr << "Exception: " << e.what() << std::endl; - } -} |