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1 | // |
2 | // udp_client.cpp | |
3 | // ~~~~~~~~~~~~~~ | |
4 | // | |
92f5a8d4 | 5 | // Copyright (c) 2003-2019 Christopher M. Kohlhoff (chris at kohlhoff dot com) |
7c673cae FG |
6 | // |
7 | // Distributed under the Boost Software License, Version 1.0. (See accompanying | |
8 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
9 | // | |
10 | ||
11 | #include <boost/asio/ip/udp.hpp> | |
12 | #include <boost/date_time/posix_time/posix_time_types.hpp> | |
13 | #include <algorithm> | |
14 | #include <cstdio> | |
15 | #include <cstdlib> | |
16 | #include <cstring> | |
17 | #include <vector> | |
18 | #include "high_res_clock.hpp" | |
19 | ||
20 | using boost::asio::ip::udp; | |
21 | using boost::posix_time::ptime; | |
22 | using boost::posix_time::microsec_clock; | |
23 | ||
24 | const int num_samples = 100000; | |
25 | ||
26 | int main(int argc, char* argv[]) | |
27 | { | |
28 | if (argc != 6) | |
29 | { | |
30 | std::fprintf(stderr, | |
31 | "Usage: udp_client <ip> <port1> " | |
32 | "<nports> <bufsize> {spin|block}\n"); | |
33 | return 1; | |
34 | } | |
35 | ||
36 | const char* ip = argv[1]; | |
37 | unsigned short first_port = static_cast<unsigned short>(std::atoi(argv[2])); | |
38 | unsigned short num_ports = static_cast<unsigned short>(std::atoi(argv[3])); | |
39 | std::size_t buf_size = static_cast<std::size_t>(std::atoi(argv[4])); | |
40 | bool spin = (std::strcmp(argv[5], "spin") == 0); | |
41 | ||
b32b8144 | 42 | boost::asio::io_context io_context; |
7c673cae | 43 | |
b32b8144 | 44 | udp::socket socket(io_context, udp::endpoint(udp::v4(), 0)); |
7c673cae FG |
45 | |
46 | if (spin) | |
47 | { | |
b32b8144 | 48 | socket.non_blocking(true); |
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49 | } |
50 | ||
b32b8144 | 51 | udp::endpoint target(boost::asio::ip::make_address(ip), first_port); |
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52 | unsigned short last_port = first_port + num_ports - 1; |
53 | std::vector<unsigned char> write_buf(buf_size); | |
54 | std::vector<unsigned char> read_buf(buf_size); | |
55 | ||
56 | ptime start = microsec_clock::universal_time(); | |
57 | boost::uint64_t start_hr = high_res_clock(); | |
58 | ||
59 | boost::uint64_t samples[num_samples]; | |
60 | for (int i = 0; i < num_samples; ++i) | |
61 | { | |
62 | boost::uint64_t t = high_res_clock(); | |
63 | ||
64 | boost::system::error_code ec; | |
65 | socket.send_to(boost::asio::buffer(write_buf), target, 0, ec); | |
66 | ||
67 | do socket.receive(boost::asio::buffer(read_buf), 0, ec); | |
68 | while (ec == boost::asio::error::would_block); | |
69 | ||
70 | samples[i] = high_res_clock() - t; | |
71 | ||
72 | if (target.port() == last_port) | |
73 | target.port(first_port); | |
74 | else | |
75 | target.port(target.port() + 1); | |
76 | } | |
77 | ||
78 | ptime stop = microsec_clock::universal_time(); | |
79 | boost::uint64_t stop_hr = high_res_clock(); | |
80 | boost::uint64_t elapsed_usec = (stop - start).total_microseconds(); | |
81 | boost::uint64_t elapsed_hr = stop_hr - start_hr; | |
82 | double scale = 1.0 * elapsed_usec / elapsed_hr; | |
83 | ||
84 | std::sort(samples, samples + num_samples); | |
85 | std::printf(" 0.0%%\t%f\n", samples[0] * scale); | |
86 | std::printf(" 0.1%%\t%f\n", samples[num_samples / 1000 - 1] * scale); | |
87 | std::printf(" 1.0%%\t%f\n", samples[num_samples / 100 - 1] * scale); | |
88 | std::printf(" 10.0%%\t%f\n", samples[num_samples / 10 - 1] * scale); | |
89 | std::printf(" 20.0%%\t%f\n", samples[num_samples * 2 / 10 - 1] * scale); | |
90 | std::printf(" 30.0%%\t%f\n", samples[num_samples * 3 / 10 - 1] * scale); | |
91 | std::printf(" 40.0%%\t%f\n", samples[num_samples * 4 / 10 - 1] * scale); | |
92 | std::printf(" 50.0%%\t%f\n", samples[num_samples * 5 / 10 - 1] * scale); | |
93 | std::printf(" 60.0%%\t%f\n", samples[num_samples * 6 / 10 - 1] * scale); | |
94 | std::printf(" 70.0%%\t%f\n", samples[num_samples * 7 / 10 - 1] * scale); | |
95 | std::printf(" 80.0%%\t%f\n", samples[num_samples * 8 / 10 - 1] * scale); | |
96 | std::printf(" 90.0%%\t%f\n", samples[num_samples * 9 / 10 - 1] * scale); | |
97 | std::printf(" 99.0%%\t%f\n", samples[num_samples * 99 / 100 - 1] * scale); | |
98 | std::printf(" 99.9%%\t%f\n", samples[num_samples * 999 / 1000 - 1] * scale); | |
99 | std::printf("100.0%%\t%f\n", samples[num_samples - 1] * scale); | |
100 | ||
101 | double total = 0.0; | |
102 | for (int i = 0; i < num_samples; ++i) total += samples[i] * scale; | |
103 | std::printf(" mean\t%f\n", total / num_samples); | |
104 | } |