1 /*****************************************************************************\
3 * Name : spocket_tester *
4 * Author : Chris Koeritz *
6 *******************************************************************************
7 * Copyright (c) 2000-$now By Author. This program is free software; you can *
8 * redistribute it and/or modify it under the terms of the GNU General Public *
9 * License as published by the Free Software Foundation; either version 2 of *
10 * the License or (at your option) any later version. This is online at: *
11 * http://www.fsf.org/copyleft/gpl.html *
12 * Please send any updates to: fred@gruntose.com *
13 \*****************************************************************************/
15 #include "spocket_tester.h"
17 #include <basis/byte_array.h>
18 #include <basis/functions.h>
19 #include <basis/astring.h>
20 #include <loggers/critical_events.h>
21 #include <loggers/program_wide_logger.h>
22 #include <mathematics/chaos.h>
23 #include <sockets/internet_address.h>
24 #include <sockets/raw_socket.h>
25 #include <sockets/spocket.h>
26 #include <sockets/tcpip_definitions.h>
27 #include <sockets/tcpip_stack.h>
28 #include <timely/time_control.h>
29 #include <timely/time_stamp.h>
33 //using namespace application;
34 using namespace basis;
35 //using namespace filesystem;
36 using namespace loggers;
37 using namespace mathematics;
38 using namespace sockets;
39 using namespace structures;
40 using namespace textual;
41 using namespace timely;
42 //using namespace unit_test;
44 #define LOG(to_print) EMERGENCY_LOG(program_wide_logger().get(), astring(to_print))
46 const int MAXIMUM_WINSOCK_MTU = 100000;
47 // the largest chunk of bytes we will receive at one time.
49 const int MAXIMUM_TRANSFER_WAIT = 40 * SECOND_ms;
50 // the longest amount of time we wait in trying to receive data.
52 static abyte receive_buffer[MAXIMUM_WINSOCK_MTU + 1];
53 // used for dumping received data into.
55 const int PAUSE_TIME = 200;
56 // the snooze interval when we encounter socket underflow or overflow.
58 //#define DEBUG_SPOCKET_TESTER
59 // uncomment for noisy version.
61 spocket_tester::spocket_tester(const internet_address &where)
62 : _where(new internet_address(where)),
63 _stack(new tcpip_stack),
70 spocket_tester::~spocket_tester()
79 bool spocket_tester::connect()
82 _socket = new spocket(*_where);
84 outcome ret = spocket::NO_CONNECTION;
86 ret = _socket->connect();
87 if (ret == spocket::OKAY) break;
88 if (ret != spocket::NO_CONNECTION) break;
89 time_control::sleep_ms(100);
91 return ret == spocket::OKAY;
94 bool spocket_tester::accept(bool wait)
97 _root_server = new spocket(*_where);
100 LOG("already have a socket for accept!");
103 outcome ret = spocket::NO_CONNECTION;
105 ret = _root_server->accept(_socket, false);
106 if (ret == spocket::OKAY) break;
107 if (ret != spocket::NO_CONNECTION) break;
108 if (!wait) return true; // we accepted at least once.
109 time_control::sleep_ms(100);
111 return ret == spocket::OKAY;
114 bool spocket_tester::do_a_send(abyte *buffer, int size,
115 testing_statistics &stats)
117 time_stamp start_time;
119 time_stamp when_to_leave(MAXIMUM_TRANSFER_WAIT);
122 #ifdef DEBUG_SPOCKET_TESTER
123 LOG("into do a send");
126 while (time_stamp() < when_to_leave) {
127 worked = _socket->send(buffer, size, len_sent);
128 if (worked == spocket::NONE_READY) {
129 //// time_control::sleep_ms(PAUSE_TIME);
130 _socket->await_writable(PAUSE_TIME);
132 } else if (worked == spocket::PARTIAL) {
133 //danger danger if we get wrong info.
136 stats.bytes_sent += len_sent;
137 /// time_control::sleep_ms(PAUSE_TIME);
138 _socket->await_writable(PAUSE_TIME);
142 #ifdef DEBUG_SPOCKET_TESTER
143 LOG("got out of loop");
146 stats.send_time += int(time_stamp().value() - start_time.value());
147 stats.bytes_sent += len_sent;
149 if ( (worked != spocket::OKAY) && (worked != spocket::PARTIAL) ) {
150 LOG(astring("No data went out on the socket: ")
151 + spocket::outcome_name(worked));
154 if (len_sent != size) {
155 LOG(a_sprintf("partial send on socket, %d bytes instead of %d, recurse.",
157 return do_a_send(buffer + len_sent, size - len_sent, stats);
161 // int time_taken = int(end_time.value() - start_time.value());
166 bool spocket_tester::do_a_receive(int size_expected, testing_statistics &stats)
168 time_stamp start_time;
170 #ifdef DEBUG_SPOCKET_TESTER
171 LOG("into do a rcv");
174 time_stamp when_to_leave(MAXIMUM_TRANSFER_WAIT);
176 while ( (full_length < size_expected) && (time_stamp() < when_to_leave) ) {
177 time_stamp start_of_receive;
178 int len = MAXIMUM_WINSOCK_MTU;
179 outcome ret = _socket->receive(receive_buffer, len);
180 if (ret != spocket::OKAY) {
181 if (ret == spocket::NONE_READY) {
182 if (len != 0) LOG(a_sprintf("supposedly nothing was received (%d bytes)", len));
183 /// time_control::sleep_ms(PAUSE_TIME);
184 _socket->await_readable(PAUSE_TIME);
188 // reset our time if we've gotten good data.
189 if (ret == spocket::OKAY)
190 when_to_leave.reset(MAXIMUM_TRANSFER_WAIT);
192 int receive_duration = int(time_stamp().value()
193 - start_of_receive.value());
194 stats.receive_time += receive_duration;
196 #ifdef DEBUG_SPOCKET_TESTER
197 LOG(a_sprintf("did recv, len=%d", len));
201 LOG("Our socket has been disconnected.");
203 } else if (len < 0) {
204 if (errno == SOCK_EWOULDBLOCK) continue; // no data.
205 LOG(astring("The receive failed with an error ")
206 + critical_events::system_error_text(errno));
210 stats.bytes_received += len;
213 if (full_length != size_expected)
214 LOG(a_sprintf("Did not get the full size expected (wanted %d and "
215 "got %d bytes).", size_expected, full_length));
220 bool spocket_tester::perform_test(int size, int count,
221 testing_statistics &stats)
223 #ifdef DEBUG_SPOCKET_TESTER
224 LOG("into perf test");
227 // the statics are used to generate our random buffer for sending.
228 static abyte garbage_buffer[MAXIMUM_WINSOCK_MTU + 1];
229 static bool garbage_initialized = false;
232 // if our static buffer full of random stuff was never initialized, we do
233 // so now. this supports efficiently re-using the tester if desired.
234 if (!garbage_initialized) {
235 LOG("initializing random send buffer.");
236 // note the less than or equal; we know we have one more byte to fill.
237 for (int i = 0; i <= MAXIMUM_WINSOCK_MTU; i++)
238 garbage_buffer[i] = randomizer.inclusive(0, 255);
239 garbage_initialized = true;
240 LOG("random send buffer initialized.");
243 // reset the statistical package.
244 stats.total_runs = 0;
246 stats.receive_time = 0;
247 stats.bytes_sent = 0;
248 stats.bytes_received = 0;
250 // check that they aren't trying to do too big of a send.
251 if (size > MAXIMUM_WINSOCK_MTU) {
252 LOG("The size is over our limit. To fix this, edit the "
253 "send_data function.");
257 // check that our socket is usable.
259 LOG("One cannot send data on an uninitialized tester!");
263 int runs_completed = 0;
264 // counts up how many times we've done our test cycle.
266 while (runs_completed < count) {
267 #ifdef DEBUG_SPOCKET_TESTER
268 LOG(a_sprintf("iter %d", runs_completed));
270 if (_socket->client()) {
271 // we're doing the client side routine here.
272 time_stamp trip_start;
273 #ifdef DEBUG_SPOCKET_TESTER
274 LOG("client about to send");
276 if (!do_a_send(garbage_buffer, size, stats)) {
277 LOG("We failed on a send. Now quitting.");
280 #ifdef DEBUG_SPOCKET_TESTER
281 LOG("client about to rcv");
283 if (!do_a_receive(size, stats)) {
284 LOG("We failed on a receive. Now quitting.");
287 stats.round_trip_time += int(time_stamp().value() - trip_start.value());
289 // we're doing the server side routine here.
290 time_stamp trip_start;
291 #ifdef DEBUG_SPOCKET_TESTER
292 LOG("server about to rcv");
294 if (!do_a_receive(size, stats)) {
295 LOG("We failed on a receive. Now quitting.");
298 #ifdef DEBUG_SPOCKET_TESTER
299 LOG("server about to send");
301 if (!do_a_send(garbage_buffer, size, stats)) {
302 LOG("We failed on a send. Now quitting.");
305 stats.round_trip_time += int(time_stamp().value() - trip_start.value());
308 runs_completed++; // finished a run.
309 stats.total_runs++; // count it in the overall stats too.
310 if ( !(runs_completed % 10) )
311 LOG(a_sprintf("Completed test #%d.", runs_completed));