Jim Flynn / Mbed OS wifi_Example

wifi test

Dependencies:   X_NUCLEO_IKS01A2 mbed-http

easy-connect/wizfi310-driver/TESTS/net/udp_packet_pressure/main.cpp@0:24d3eb812fd4, 2018-09-05 (annotated)

Committer:
JMF
Date:
Wed Sep 05 14:28:24 2018 +0000
Revision:
0:24d3eb812fd4
Initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
JMF 0:24d3eb812fd4 1 #ifndef MBED_EXTENDED_TESTS
JMF 0:24d3eb812fd4 2 #error [NOT_SUPPORTED] Pressure tests are not supported by default
JMF 0:24d3eb812fd4 3 #endif
JMF 0:24d3eb812fd4 4
JMF 0:24d3eb812fd4 5 #include "mbed.h"
JMF 0:24d3eb812fd4 6 #include "ESP8266Interface.h"
JMF 0:24d3eb812fd4 7 #include "UDPSocket.h"
JMF 0:24d3eb812fd4 8 #include "greentea-client/test_env.h"
JMF 0:24d3eb812fd4 9 #include "unity/unity.h"
JMF 0:24d3eb812fd4 10 #include "utest.h"
JMF 0:24d3eb812fd4 11
JMF 0:24d3eb812fd4 12 using namespace utest::v1;
JMF 0:24d3eb812fd4 13
JMF 0:24d3eb812fd4 14
JMF 0:24d3eb812fd4 15 #ifndef MBED_CFG_UDP_CLIENT_PACKET_PRESSURE_MIN
JMF 0:24d3eb812fd4 16 #define MBED_CFG_UDP_CLIENT_PACKET_PRESSURE_MIN 64
JMF 0:24d3eb812fd4 17 #endif
JMF 0:24d3eb812fd4 18
JMF 0:24d3eb812fd4 19 #ifndef MBED_CFG_UDP_CLIENT_PACKET_PRESSURE_MAX
JMF 0:24d3eb812fd4 20 #define MBED_CFG_UDP_CLIENT_PACKET_PRESSURE_MAX 0x80000
JMF 0:24d3eb812fd4 21 #endif
JMF 0:24d3eb812fd4 22
JMF 0:24d3eb812fd4 23 #ifndef MBED_CFG_UDP_CLIENT_PACKET_PRESSURE_TIMEOUT
JMF 0:24d3eb812fd4 24 #define MBED_CFG_UDP_CLIENT_PACKET_PRESSURE_TIMEOUT 100
JMF 0:24d3eb812fd4 25 #endif
JMF 0:24d3eb812fd4 26
JMF 0:24d3eb812fd4 27 #ifndef MBED_CFG_UDP_CLIENT_PACKET_PRESSURE_SEED
JMF 0:24d3eb812fd4 28 #define MBED_CFG_UDP_CLIENT_PACKET_PRESSURE_SEED 0x6d626564
JMF 0:24d3eb812fd4 29 #endif
JMF 0:24d3eb812fd4 30
JMF 0:24d3eb812fd4 31 #ifndef MBED_CFG_UDP_CLIENT_PACKET_PRESSURE_DEBUG
JMF 0:24d3eb812fd4 32 #define MBED_CFG_UDP_CLIENT_PACKET_PRESSURE_DEBUG false
JMF 0:24d3eb812fd4 33 #endif
JMF 0:24d3eb812fd4 34
JMF 0:24d3eb812fd4 35 #ifndef MBED_CFG_ESP8266_TX
JMF 0:24d3eb812fd4 36 #define MBED_CFG_ESP8266_TX D1
JMF 0:24d3eb812fd4 37 #endif
JMF 0:24d3eb812fd4 38
JMF 0:24d3eb812fd4 39 #ifndef MBED_CFG_ESP8266_RX
JMF 0:24d3eb812fd4 40 #define MBED_CFG_ESP8266_RX D0
JMF 0:24d3eb812fd4 41 #endif
JMF 0:24d3eb812fd4 42
JMF 0:24d3eb812fd4 43 #ifndef MBED_CFG_ESP8266_DEBUG
JMF 0:24d3eb812fd4 44 #define MBED_CFG_ESP8266_DEBUG false
JMF 0:24d3eb812fd4 45 #endif
JMF 0:24d3eb812fd4 46
JMF 0:24d3eb812fd4 47 #define STRINGIZE(x) STRINGIZE2(x)
JMF 0:24d3eb812fd4 48 #define STRINGIZE2(x) #x
JMF 0:24d3eb812fd4 49
JMF 0:24d3eb812fd4 50
JMF 0:24d3eb812fd4 51 // Simple xorshift pseudorandom number generator
JMF 0:24d3eb812fd4 52 class RandSeq {
JMF 0:24d3eb812fd4 53 private:
JMF 0:24d3eb812fd4 54 uint32_t x;
JMF 0:24d3eb812fd4 55 uint32_t y;
JMF 0:24d3eb812fd4 56 static const int A = 15;
JMF 0:24d3eb812fd4 57 static const int B = 18;
JMF 0:24d3eb812fd4 58 static const int C = 11;
JMF 0:24d3eb812fd4 59
JMF 0:24d3eb812fd4 60 public:
JMF 0:24d3eb812fd4 61 RandSeq(uint32_t seed=MBED_CFG_UDP_CLIENT_PACKET_PRESSURE_SEED)
JMF 0:24d3eb812fd4 62 : x(seed), y(seed) {}
JMF 0:24d3eb812fd4 63
JMF 0:24d3eb812fd4 64 uint32_t next(void) {
JMF 0:24d3eb812fd4 65 x ^= x << A;
JMF 0:24d3eb812fd4 66 x ^= x >> B;
JMF 0:24d3eb812fd4 67 x ^= y ^ (y >> C);
JMF 0:24d3eb812fd4 68 return x + y;
JMF 0:24d3eb812fd4 69 }
JMF 0:24d3eb812fd4 70
JMF 0:24d3eb812fd4 71 void skip(size_t size) {
JMF 0:24d3eb812fd4 72 for (size_t i = 0; i < size; i++) {
JMF 0:24d3eb812fd4 73 next();
JMF 0:24d3eb812fd4 74 }
JMF 0:24d3eb812fd4 75 }
JMF 0:24d3eb812fd4 76
JMF 0:24d3eb812fd4 77 void buffer(uint8_t *buffer, size_t size) {
JMF 0:24d3eb812fd4 78 RandSeq lookahead = *this;
JMF 0:24d3eb812fd4 79
JMF 0:24d3eb812fd4 80 for (size_t i = 0; i < size; i++) {
JMF 0:24d3eb812fd4 81 buffer[i] = lookahead.next() & 0xff;
JMF 0:24d3eb812fd4 82 }
JMF 0:24d3eb812fd4 83 }
JMF 0:24d3eb812fd4 84
JMF 0:24d3eb812fd4 85 int cmp(uint8_t *buffer, size_t size) {
JMF 0:24d3eb812fd4 86 RandSeq lookahead = *this;
JMF 0:24d3eb812fd4 87
JMF 0:24d3eb812fd4 88 for (size_t i = 0; i < size; i++) {
JMF 0:24d3eb812fd4 89 int diff = buffer[i] - (lookahead.next() & 0xff);
JMF 0:24d3eb812fd4 90 if (diff != 0) {
JMF 0:24d3eb812fd4 91 return diff;
JMF 0:24d3eb812fd4 92 }
JMF 0:24d3eb812fd4 93 }
JMF 0:24d3eb812fd4 94 return 0;
JMF 0:24d3eb812fd4 95 }
JMF 0:24d3eb812fd4 96 };
JMF 0:24d3eb812fd4 97
JMF 0:24d3eb812fd4 98 // Shared buffer for network transactions
JMF 0:24d3eb812fd4 99 uint8_t *buffer;
JMF 0:24d3eb812fd4 100 size_t buffer_size;
JMF 0:24d3eb812fd4 101
JMF 0:24d3eb812fd4 102 // Tries to get the biggest buffer possible on the device. Exponentially
JMF 0:24d3eb812fd4 103 // grows a buffer until heap runs out of space, and uses half to leave
JMF 0:24d3eb812fd4 104 // space for the rest of the program
JMF 0:24d3eb812fd4 105 void generate_buffer(uint8_t **buffer, size_t *size, size_t min, size_t max) {
JMF 0:24d3eb812fd4 106 size_t i = min;
JMF 0:24d3eb812fd4 107 while (i < max) {
JMF 0:24d3eb812fd4 108 void *b = malloc(i);
JMF 0:24d3eb812fd4 109 if (!b) {
JMF 0:24d3eb812fd4 110 i /= 4;
JMF 0:24d3eb812fd4 111 if (i < min) {
JMF 0:24d3eb812fd4 112 i = min;
JMF 0:24d3eb812fd4 113 }
JMF 0:24d3eb812fd4 114 break;
JMF 0:24d3eb812fd4 115 }
JMF 0:24d3eb812fd4 116 free(b);
JMF 0:24d3eb812fd4 117 i *= 2;
JMF 0:24d3eb812fd4 118 }
JMF 0:24d3eb812fd4 119
JMF 0:24d3eb812fd4 120 *buffer = (uint8_t *)malloc(i);
JMF 0:24d3eb812fd4 121 *size = i;
JMF 0:24d3eb812fd4 122 TEST_ASSERT(buffer);
JMF 0:24d3eb812fd4 123 }
JMF 0:24d3eb812fd4 124
JMF 0:24d3eb812fd4 125 void test_udp_packet_pressure() {
JMF 0:24d3eb812fd4 126 generate_buffer(&buffer, &buffer_size,
JMF 0:24d3eb812fd4 127 MBED_CFG_UDP_CLIENT_PACKET_PRESSURE_MIN,
JMF 0:24d3eb812fd4 128 MBED_CFG_UDP_CLIENT_PACKET_PRESSURE_MAX);
JMF 0:24d3eb812fd4 129 printf("MBED: Generated buffer %d\r\n", buffer_size);
JMF 0:24d3eb812fd4 130
JMF 0:24d3eb812fd4 131 ESP8266Interface net(MBED_CFG_ESP8266_TX, MBED_CFG_ESP8266_RX, MBED_CFG_ESP8266_DEBUG);
JMF 0:24d3eb812fd4 132 int err = net.connect(STRINGIZE(MBED_CFG_ESP8266_SSID), STRINGIZE(MBED_CFG_ESP8266_PASS));
JMF 0:24d3eb812fd4 133 TEST_ASSERT_EQUAL(0, err);
JMF 0:24d3eb812fd4 134
JMF 0:24d3eb812fd4 135 printf("MBED: UDPClient IP address is '%s'\n", net.get_ip_address());
JMF 0:24d3eb812fd4 136 printf("MBED: UDPClient waiting for server IP and port...\n");
JMF 0:24d3eb812fd4 137
JMF 0:24d3eb812fd4 138 greentea_send_kv("target_ip", net.get_ip_address());
JMF 0:24d3eb812fd4 139
JMF 0:24d3eb812fd4 140 char recv_key[] = "host_port";
JMF 0:24d3eb812fd4 141 char ipbuf[60] = {0};
JMF 0:24d3eb812fd4 142 char portbuf[16] = {0};
JMF 0:24d3eb812fd4 143 unsigned int port = 0;
JMF 0:24d3eb812fd4 144
JMF 0:24d3eb812fd4 145 greentea_send_kv("host_ip", " ");
JMF 0:24d3eb812fd4 146 greentea_parse_kv(recv_key, ipbuf, sizeof(recv_key), sizeof(ipbuf));
JMF 0:24d3eb812fd4 147
JMF 0:24d3eb812fd4 148 greentea_send_kv("host_port", " ");
JMF 0:24d3eb812fd4 149 greentea_parse_kv(recv_key, portbuf, sizeof(recv_key), sizeof(ipbuf));
JMF 0:24d3eb812fd4 150 sscanf(portbuf, "%u", &port);
JMF 0:24d3eb812fd4 151
JMF 0:24d3eb812fd4 152 printf("MBED: Server IP address received: %s:%d \n", ipbuf, port);
JMF 0:24d3eb812fd4 153
JMF 0:24d3eb812fd4 154 UDPSocket sock;
JMF 0:24d3eb812fd4 155 SocketAddress udp_addr(ipbuf, port);
JMF 0:24d3eb812fd4 156
JMF 0:24d3eb812fd4 157 Timer timer;
JMF 0:24d3eb812fd4 158 timer.start();
JMF 0:24d3eb812fd4 159
JMF 0:24d3eb812fd4 160 // Tests exponentially growing sequences
JMF 0:24d3eb812fd4 161 for (size_t size = MBED_CFG_UDP_CLIENT_PACKET_PRESSURE_MIN;
JMF 0:24d3eb812fd4 162 size < MBED_CFG_UDP_CLIENT_PACKET_PRESSURE_MAX;
JMF 0:24d3eb812fd4 163 size *= 2) {
JMF 0:24d3eb812fd4 164 err = sock.open(&net);
JMF 0:24d3eb812fd4 165 TEST_ASSERT_EQUAL(0, err);
JMF 0:24d3eb812fd4 166 printf("UDP: %s:%d streaming %d bytes\r\n", ipbuf, port, size);
JMF 0:24d3eb812fd4 167
JMF 0:24d3eb812fd4 168 sock.set_blocking(false);
JMF 0:24d3eb812fd4 169
JMF 0:24d3eb812fd4 170 // Loop to send/recv all data
JMF 0:24d3eb812fd4 171 RandSeq tx_seq;
JMF 0:24d3eb812fd4 172 RandSeq rx_seq;
JMF 0:24d3eb812fd4 173 size_t rx_count = 0;
JMF 0:24d3eb812fd4 174 size_t tx_count = 0;
JMF 0:24d3eb812fd4 175 int known_time = timer.read_ms();
JMF 0:24d3eb812fd4 176 size_t window = buffer_size;
JMF 0:24d3eb812fd4 177
JMF 0:24d3eb812fd4 178 while (tx_count < size || rx_count < size) {
JMF 0:24d3eb812fd4 179 // Send out packets
JMF 0:24d3eb812fd4 180 if (tx_count < size) {
JMF 0:24d3eb812fd4 181 size_t chunk_size = size - tx_count;
JMF 0:24d3eb812fd4 182 if (chunk_size > window) {
JMF 0:24d3eb812fd4 183 chunk_size = window;
JMF 0:24d3eb812fd4 184 }
JMF 0:24d3eb812fd4 185
JMF 0:24d3eb812fd4 186 tx_seq.buffer(buffer, chunk_size);
JMF 0:24d3eb812fd4 187 int td = sock.sendto(udp_addr, buffer, chunk_size);
JMF 0:24d3eb812fd4 188
JMF 0:24d3eb812fd4 189 if (td > 0) {
JMF 0:24d3eb812fd4 190 if (MBED_CFG_UDP_CLIENT_PACKET_PRESSURE_DEBUG) {
JMF 0:24d3eb812fd4 191 printf("UDP: tx -> %d\r\n", td);
JMF 0:24d3eb812fd4 192 }
JMF 0:24d3eb812fd4 193 tx_seq.skip(td);
JMF 0:24d3eb812fd4 194 tx_count += td;
JMF 0:24d3eb812fd4 195 } else if (td != NSAPI_ERROR_WOULD_BLOCK) {
JMF 0:24d3eb812fd4 196 // We may fail to send because of buffering issues, revert to
JMF 0:24d3eb812fd4 197 // last good sequence and cut buffer in half
JMF 0:24d3eb812fd4 198 if (window > MBED_CFG_UDP_CLIENT_PACKET_PRESSURE_MIN) {
JMF 0:24d3eb812fd4 199 window /= 2;
JMF 0:24d3eb812fd4 200 }
JMF 0:24d3eb812fd4 201
JMF 0:24d3eb812fd4 202 if (MBED_CFG_UDP_CLIENT_PACKET_PRESSURE_DEBUG) {
JMF 0:24d3eb812fd4 203 printf("UDP: Not sent (%d), window = %d\r\n", td, window);
JMF 0:24d3eb812fd4 204 }
JMF 0:24d3eb812fd4 205 }
JMF 0:24d3eb812fd4 206 }
JMF 0:24d3eb812fd4 207
JMF 0:24d3eb812fd4 208 // Prioritize recieving over sending packets to avoid flooding
JMF 0:24d3eb812fd4 209 // the network while handling erronous packets
JMF 0:24d3eb812fd4 210 while (rx_count < size) {
JMF 0:24d3eb812fd4 211 int rd = sock.recvfrom(NULL, buffer, buffer_size);
JMF 0:24d3eb812fd4 212 TEST_ASSERT(rd > 0 || rd == NSAPI_ERROR_WOULD_BLOCK);
JMF 0:24d3eb812fd4 213
JMF 0:24d3eb812fd4 214 if (rd > 0) {
JMF 0:24d3eb812fd4 215 if (MBED_CFG_UDP_CLIENT_PACKET_PRESSURE_DEBUG) {
JMF 0:24d3eb812fd4 216 printf("UDP: rx <- %d\r\n", rd);
JMF 0:24d3eb812fd4 217 }
JMF 0:24d3eb812fd4 218
JMF 0:24d3eb812fd4 219 if (rx_seq.cmp(buffer, rd) == 0) {
JMF 0:24d3eb812fd4 220 rx_seq.skip(rd);
JMF 0:24d3eb812fd4 221 rx_count += rd;
JMF 0:24d3eb812fd4 222 known_time = timer.read_ms();
JMF 0:24d3eb812fd4 223 if (window < MBED_CFG_UDP_CLIENT_PACKET_PRESSURE_MAX) {
JMF 0:24d3eb812fd4 224 window += MBED_CFG_UDP_CLIENT_PACKET_PRESSURE_MIN;
JMF 0:24d3eb812fd4 225 }
JMF 0:24d3eb812fd4 226 }
JMF 0:24d3eb812fd4 227 } else if (timer.read_ms() - known_time >
JMF 0:24d3eb812fd4 228 MBED_CFG_UDP_CLIENT_PACKET_PRESSURE_TIMEOUT) {
JMF 0:24d3eb812fd4 229 // Dropped packet or out of order, revert to last good sequence
JMF 0:24d3eb812fd4 230 // and cut buffer in half
JMF 0:24d3eb812fd4 231 tx_seq = rx_seq;
JMF 0:24d3eb812fd4 232 tx_count = rx_count;
JMF 0:24d3eb812fd4 233 known_time = timer.read_ms();
JMF 0:24d3eb812fd4 234 if (window > MBED_CFG_UDP_CLIENT_PACKET_PRESSURE_MIN) {
JMF 0:24d3eb812fd4 235 window /= 2;
JMF 0:24d3eb812fd4 236 }
JMF 0:24d3eb812fd4 237
JMF 0:24d3eb812fd4 238 if (MBED_CFG_UDP_CLIENT_PACKET_PRESSURE_DEBUG) {
JMF 0:24d3eb812fd4 239 printf("UDP: Dropped, window = %d\r\n", window);
JMF 0:24d3eb812fd4 240 }
JMF 0:24d3eb812fd4 241 } else if (rd == NSAPI_ERROR_WOULD_BLOCK) {
JMF 0:24d3eb812fd4 242 break;
JMF 0:24d3eb812fd4 243 }
JMF 0:24d3eb812fd4 244 }
JMF 0:24d3eb812fd4 245 }
JMF 0:24d3eb812fd4 246
JMF 0:24d3eb812fd4 247 err = sock.close();
JMF 0:24d3eb812fd4 248 TEST_ASSERT_EQUAL(0, err);
JMF 0:24d3eb812fd4 249 }
JMF 0:24d3eb812fd4 250
JMF 0:24d3eb812fd4 251 timer.stop();
JMF 0:24d3eb812fd4 252 printf("MBED: Time taken: %fs\r\n", timer.read());
JMF 0:24d3eb812fd4 253 printf("MBED: Speed: %.3fkb/s\r\n",
JMF 0:24d3eb812fd4 254 8*(2*MBED_CFG_UDP_CLIENT_PACKET_PRESSURE_MAX -
JMF 0:24d3eb812fd4 255 MBED_CFG_UDP_CLIENT_PACKET_PRESSURE_MIN) / (1000*timer.read()));
JMF 0:24d3eb812fd4 256
JMF 0:24d3eb812fd4 257 net.disconnect();
JMF 0:24d3eb812fd4 258 }
JMF 0:24d3eb812fd4 259
JMF 0:24d3eb812fd4 260
JMF 0:24d3eb812fd4 261 // Test setup
JMF 0:24d3eb812fd4 262 utest::v1::status_t test_setup(const size_t number_of_cases) {
JMF 0:24d3eb812fd4 263 GREENTEA_SETUP(120, "udp_echo");
JMF 0:24d3eb812fd4 264 return verbose_test_setup_handler(number_of_cases);
JMF 0:24d3eb812fd4 265 }
JMF 0:24d3eb812fd4 266
JMF 0:24d3eb812fd4 267 Case cases[] = {
JMF 0:24d3eb812fd4 268 Case("UDP packet pressure", test_udp_packet_pressure),
JMF 0:24d3eb812fd4 269 };
JMF 0:24d3eb812fd4 270
JMF 0:24d3eb812fd4 271 Specification specification(test_setup, cases);
JMF 0:24d3eb812fd4 272
JMF 0:24d3eb812fd4 273 int main() {
JMF 0:24d3eb812fd4 274 return !Harness::run(specification);
JMF 0:24d3eb812fd4 275 }
JMF 0:24d3eb812fd4 276