main.cpp

00001 /*
00002  * Copyright (c) 2013-2017, ARM Limited, All Rights Reserved
00003  * SPDX-License-Identifier: Apache-2.0
00004  *
00005  * Licensed under the Apache License, Version 2.0 (the "License"); you may
00006  * not use this file except in compliance with the License.
00007  * You may obtain a copy of the License at
00008  *
00009  * http://www.apache.org/licenses/LICENSE-2.0
00010  *
00011  * Unless required by applicable law or agreed to in writing, software
00012  * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
00013  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00014  * See the License for the specific language governing permissions and
00015  * limitations under the License.
00016  */
00017 
00018  #ifndef MBED_CONF_APP_CONNECT_STATEMENT
00019      #error [NOT_SUPPORTED] No network configuration found for this target.
00020  #endif
00021 
00022 #ifndef MBED_EXTENDED_TESTS
00023     #error [NOT_SUPPORTED] Parallel tests are not supported by default
00024 #endif
00025 
00026 #include "mbed.h"
00027 #include MBED_CONF_APP_HEADER_FILE
00028 #include "UDPSocket.h"
00029 #include "greentea-client/test_env.h"
00030 #include "unity/unity.h"
00031 #include "utest.h"
00032 
00033 using namespace utest::v1;
00034 
00035 
00036 #ifndef MBED_CFG_UDP_CLIENT_ECHO_BUFFER_SIZE
00037 #define MBED_CFG_UDP_CLIENT_ECHO_BUFFER_SIZE 64
00038 #endif
00039 
00040 #ifndef MBED_CFG_UDP_CLIENT_ECHO_TIMEOUT
00041 #define MBED_CFG_UDP_CLIENT_ECHO_TIMEOUT 500
00042 #endif
00043 
00044 #ifndef MBED_CFG_UDP_CLIENT_ECHO_THREADS
00045 #define MBED_CFG_UDP_CLIENT_ECHO_THREADS 3
00046 #endif
00047 
00048 #define STRINGIZE(x) STRINGIZE2(x)
00049 #define STRINGIZE2(x) #x
00050 
00051 
00052 const int ECHO_LOOPS = 16;
00053 NetworkInterface* net;
00054 SocketAddress udp_addr;
00055 Mutex iomutex;
00056 char uuid[48] = {0};
00057 
00058 // NOTE: assuming that "id" stays in the single digits
00059 void prep_buffer(int id, char *uuid, char *tx_buffer, size_t tx_size) {
00060     size_t i = 0;
00061 
00062     tx_buffer[i++] = '0' + id;
00063     tx_buffer[i++] = ' ';
00064 
00065     memcpy(tx_buffer+i, uuid, strlen(uuid));
00066     i += strlen(uuid);
00067 
00068     tx_buffer[i++] = ' ';
00069 
00070     for (; i<tx_size; ++i) {
00071         tx_buffer[i] = (rand() % 10) + '0';
00072     }
00073 }
00074 
00075 
00076 // Each echo class is in charge of one parallel transaction
00077 class Echo {
00078 private:
00079     char tx_buffer[MBED_CFG_UDP_CLIENT_ECHO_BUFFER_SIZE];
00080     char rx_buffer[MBED_CFG_UDP_CLIENT_ECHO_BUFFER_SIZE];
00081 
00082     UDPSocket sock;
00083     Thread thread;
00084     bool result;
00085     int id;
00086     char *uuid;
00087 
00088 public:
00089     // Limiting stack size to 1k
00090     Echo(): thread(osPriorityNormal, 1024), result(false) {
00091     }
00092 
00093     void start(int id, char *uuid) {
00094         this->id = id;
00095         this->uuid = uuid;
00096         osStatus status = thread.start(callback(this, &Echo::echo));
00097     }
00098 
00099     void join() {
00100         osStatus status = thread.join();
00101         TEST_ASSERT_EQUAL(osOK, status);
00102     }
00103 
00104     void echo() {
00105         int success = 0;
00106 
00107         int err = sock.open(net);
00108         TEST_ASSERT_EQUAL(0, err);
00109 
00110         sock.set_timeout(MBED_CFG_UDP_CLIENT_ECHO_TIMEOUT);
00111 
00112         for (int i = 0; success < ECHO_LOOPS; i++) {
00113             prep_buffer(id, uuid, tx_buffer, sizeof(tx_buffer));
00114             const int ret = sock.sendto(udp_addr, tx_buffer, sizeof(tx_buffer));
00115             if (ret >= 0) {
00116                 iomutex.lock();
00117                 printf("[ID:%01d][%02d] sent %d bytes - %.*s  \n", id, i, ret, ret, tx_buffer);
00118                 iomutex.unlock();
00119             } else {
00120                 iomutex.lock();
00121                 printf("[ID:%01d][%02d] Network error %d\n", id, i, ret);
00122                 iomutex.unlock();
00123                 continue;
00124             }
00125 
00126             SocketAddress temp_addr;
00127             const int n = sock.recvfrom(&temp_addr, rx_buffer, sizeof(rx_buffer));
00128             if (n >= 0) {
00129                 iomutex.lock();
00130                 printf("[ID:%01d][%02d] recv %d bytes - %.*s  \n", id, i, n, n, tx_buffer);
00131                 iomutex.unlock();
00132             } else {
00133                 iomutex.lock();
00134                 printf("[ID:%01d][%02d] Network error %d\n", id, i, n);
00135                 iomutex.unlock();
00136                 continue;
00137             }
00138 
00139             if ((temp_addr == udp_addr &&
00140                  n == sizeof(tx_buffer) &&
00141                  memcmp(rx_buffer, tx_buffer, sizeof(rx_buffer)) == 0)) {
00142                 success += 1;
00143                 iomutex.lock();
00144                 printf("[ID:%01d][%02d] success #%d\n", id, i, success);
00145                 iomutex.unlock();
00146                 continue;
00147             }
00148 
00149             // failed, clean out any remaining bad packets
00150             sock.set_timeout(0);
00151             while (true) {
00152                 err = sock.recvfrom(NULL, NULL, 0);
00153                 if (err == NSAPI_ERROR_WOULD_BLOCK ) {
00154                     break;
00155                 }
00156             }
00157             sock.set_timeout(MBED_CFG_UDP_CLIENT_ECHO_TIMEOUT);
00158         }
00159 
00160         result = success == ECHO_LOOPS;
00161 
00162         err = sock.close();
00163         TEST_ASSERT_EQUAL(0, err);
00164         if (err) {
00165             result = false;
00166         }
00167     }
00168 
00169     bool get_result() {
00170         return result;
00171     }
00172 };
00173 
00174 Echo *echoers[MBED_CFG_UDP_CLIENT_ECHO_THREADS];
00175 
00176 
00177 void test_udp_echo_parallel() {
00178     net = MBED_CONF_APP_OBJECT_CONSTRUCTION;
00179     int err =  MBED_CONF_APP_CONNECT_STATEMENT;
00180     TEST_ASSERT_EQUAL(0, err);
00181 
00182     if (err) {
00183         printf("MBED: failed to connect with an error of %d\r\n", err);
00184         GREENTEA_TESTSUITE_RESULT(false);
00185     } else {
00186         printf("UDP client IP Address is %s\n", net->get_ip_address());
00187 
00188         udp_addr.set_ip_address(MBED_CONF_APP_ECHO_SERVER_ADDR);
00189         udp_addr.set_port(MBED_CONF_APP_ECHO_SERVER_PORT);
00190 
00191         // Startup echo threads in parallel
00192         for (int i = 0; i < MBED_CFG_UDP_CLIENT_ECHO_THREADS; i++) {
00193             echoers[i] = new Echo;
00194             echoers[i]->start(i, uuid);
00195         }
00196 
00197         bool result = true;
00198 
00199         for (int i = 0; i < MBED_CFG_UDP_CLIENT_ECHO_THREADS; i++) {
00200             echoers[i]->join();
00201             result = result && echoers[i]->get_result();
00202             delete echoers[i];
00203         }
00204 
00205         net->disconnect();
00206         TEST_ASSERT_EQUAL(true, result);
00207     }
00208 }
00209 
00210 
00211 // Test setup
00212 utest::v1::status_t test_setup(const size_t number_of_cases) {
00213     GREENTEA_SETUP(120, "udp_echo");
00214     return verbose_test_setup_handler(number_of_cases);
00215 }
00216 
00217 Case cases[] = {
00218     Case("UDP echo parallel", test_udp_echo_parallel),
00219 };
00220 
00221 Specification specification(test_setup, cases);
00222 
00223 int main() {
00224     return !Harness::run(specification);
00225 }