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 basis;
34 using namespace loggers;
35 using namespace mathematics;
36 using namespace sockets;
37 using namespace structures;
38 using namespace textual;
39 using namespace timely;
41 #define LOG(to_print) EMERGENCY_LOG(program_wide_logger().get(), astring(to_print))
43 const int MAXIMUM_WINSOCK_MTU = 100000;
44 // the largest chunk of bytes we will receive at one time.
46 const int MAXIMUM_TRANSFER_WAIT = 40 * SECOND_ms;
47 // the longest amount of time we wait in trying to receive data.
49 static abyte receive_buffer[MAXIMUM_WINSOCK_MTU + 1];
50 // used for dumping received data into.
52 const int PAUSE_TIME = 200;
53 // the snooze interval when we encounter socket underflow or overflow.
55 //#define DEBUG_SPOCKET_TESTER
56 // uncomment for noisy version.
58 spocket_tester::spocket_tester(const internet_address &where)
59 : _where(new internet_address(where)),
60 _stack(new tcpip_stack),
61 _socket(NULL_POINTER),
62 _root_server(NULL_POINTER),
67 spocket_tester::~spocket_tester()
76 bool spocket_tester::connect()
79 _socket = new spocket(*_where);
81 outcome ret = spocket::NO_CONNECTION;
83 ret = _socket->connect();
84 if (ret == spocket::OKAY) break;
85 if (ret != spocket::NO_CONNECTION) break;
86 time_control::sleep_ms(100);
88 return ret == spocket::OKAY;
91 bool spocket_tester::accept(bool wait)
94 _root_server = new spocket(*_where);
97 LOG("already have a socket for accept!");
100 outcome ret = spocket::NO_CONNECTION;
102 ret = _root_server->accept(_socket, false);
103 if (ret == spocket::OKAY) break;
104 if (ret != spocket::NO_CONNECTION) break;
105 if (!wait) return true; // we tried to accept at least once.
106 time_control::sleep_ms(100); // snooze to avoid slamming with accepts.
109 return ret == spocket::OKAY;
112 bool spocket_tester::do_a_send(abyte *buffer, int size,
113 testing_statistics &stats)
115 time_stamp start_time;
117 time_stamp when_to_leave(MAXIMUM_TRANSFER_WAIT);
120 #ifdef DEBUG_SPOCKET_TESTER
121 LOG("into do a send");
124 while (time_stamp() < when_to_leave) {
125 worked = _socket->send(buffer, size, len_sent);
126 if (worked == spocket::NONE_READY) {
127 //// time_control::sleep_ms(PAUSE_TIME);
128 _socket->await_writable(PAUSE_TIME);
130 } else if (worked == spocket::PARTIAL) {
131 //danger danger if we get wrong info.
134 stats.bytes_sent += len_sent;
135 /// time_control::sleep_ms(PAUSE_TIME);
136 _socket->await_writable(PAUSE_TIME);
140 #ifdef DEBUG_SPOCKET_TESTER
141 LOG("got out of loop");
144 stats.send_time += int(time_stamp().value() - start_time.value());
145 stats.bytes_sent += len_sent;
147 if ( (worked != spocket::OKAY) && (worked != spocket::PARTIAL) ) {
148 LOG(astring("No data went out on the socket: ")
149 + spocket::outcome_name(worked));
152 if (len_sent != size) {
153 LOG(a_sprintf("partial send on socket, %d bytes instead of %d, recurse.",
155 return do_a_send(buffer + len_sent, size - len_sent, stats);
159 // int time_taken = int(end_time.value() - start_time.value());
164 bool spocket_tester::do_a_receive(int size_expected, testing_statistics &stats)
166 time_stamp start_time;
168 #ifdef DEBUG_SPOCKET_TESTER
169 LOG("into do a rcv");
172 time_stamp when_to_leave(MAXIMUM_TRANSFER_WAIT);
174 while ( (full_length < size_expected) && (time_stamp() < when_to_leave) ) {
175 time_stamp start_of_receive;
176 int len = MAXIMUM_WINSOCK_MTU;
177 outcome ret = _socket->receive(receive_buffer, len);
178 if (ret != spocket::OKAY) {
179 if (ret == spocket::NONE_READY) {
180 if (len != 0) LOG(a_sprintf("supposedly nothing was received (%d bytes)", len));
181 _socket->await_readable(PAUSE_TIME);
185 // reset our time if we've gotten good data.
186 if (ret == spocket::OKAY)
187 when_to_leave.reset(MAXIMUM_TRANSFER_WAIT);
189 int receive_duration = int(time_stamp().value()
190 - start_of_receive.value());
191 stats.receive_time += receive_duration;
193 #ifdef DEBUG_SPOCKET_TESTER
194 LOG(a_sprintf("did recv, len=%d", len));
198 LOG("Our socket has been disconnected.");
200 } else if (len < 0) {
201 if (errno == SOCK_EWOULDBLOCK) continue; // no data.
202 LOG(astring("The receive failed with an error ")
203 + critical_events::system_error_text(errno));
207 stats.bytes_received += len;
210 if (full_length != size_expected)
211 LOG(a_sprintf("Did not get the full size expected (wanted %d and "
212 "got %d bytes).", size_expected, full_length));
217 bool spocket_tester::perform_test(int size, int count,
218 testing_statistics &stats)
220 // the statics are used to generate our random buffer for sending.
221 static abyte garbage_buffer[MAXIMUM_WINSOCK_MTU + 1];
222 static bool garbage_initialized = false;
225 // if our static buffer full of random stuff was never initialized, we do
226 // so now. this supports efficiently re-using the tester if desired.
227 if (!garbage_initialized) {
228 // note the less than or equal; we know we have one more byte to fill.
229 for (int i = 0; i <= MAXIMUM_WINSOCK_MTU; i++)
230 garbage_buffer[i] = randomizer.inclusive(0, 255);
231 garbage_initialized = true;
234 // reset the statistical package.
235 stats.total_runs = 0;
237 stats.receive_time = 0;
238 stats.bytes_sent = 0;
239 stats.bytes_received = 0;
241 // check that they aren't trying to do too big of a send.
242 if (size > MAXIMUM_WINSOCK_MTU) {
243 LOG("The size is over our limit. To fix this, edit the "
244 "send_data function.");
248 // check that our socket is usable.
250 LOG("One cannot send data on an uninitialized tester!");
254 int runs_completed = 0;
255 // counts up how many times we've done our test cycle.
257 while (runs_completed < count) {
258 #ifdef DEBUG_SPOCKET_TESTER
259 LOG(a_sprintf("iter %d", runs_completed));
261 if (_socket->client()) {
262 // we're doing the client side routine here.
263 time_stamp trip_start;
264 #ifdef DEBUG_SPOCKET_TESTER
265 LOG("client about to send");
267 if (!do_a_send(garbage_buffer, size, stats)) {
268 LOG("We failed on a send. Now quitting.");
271 #ifdef DEBUG_SPOCKET_TESTER
272 LOG("client about to rcv");
274 if (!do_a_receive(size, stats)) {
275 LOG("We failed on a receive. Now quitting.");
278 stats.round_trip_time += int(time_stamp().value() - trip_start.value());
280 // we're doing the server side routine here.
281 time_stamp trip_start;
282 #ifdef DEBUG_SPOCKET_TESTER
283 LOG("server about to rcv");
285 if (!do_a_receive(size, stats)) {
286 LOG("We failed on a receive. Now quitting.");
289 #ifdef DEBUG_SPOCKET_TESTER
290 LOG("server about to send");
292 if (!do_a_send(garbage_buffer, size, stats)) {
293 LOG("We failed on a send. Now quitting.");
296 stats.round_trip_time += int(time_stamp().value() - trip_start.value());
299 runs_completed++; // finished a run.
300 stats.total_runs++; // count it in the overall stats too.
301 if ( !(runs_completed % 10) )
302 LOG(a_sprintf("Completed test #%d.", runs_completed));