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Adding retries to the NIST test. 

A UDP request to the NIST servers can fail to return data due to UDP
packet loss. Since packets are not guaranteed with UDP, this is a valid
failure and should not be treated as a test failure. The test should retry
the request in this case. This commit adds those retries.
pull/2404/head
Brian Daniels 2016-08-09 15:39:20 -05:00
parent 52658e5131
commit 114efcf753
1 changed files with 29 additions and 20 deletions
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49
features/net/FEATURE_IPV4/TESTS/mbedmicro-net/nist_internet_time_service/main.cpp
View File

@ -8,55 +8,64 @@
#include "greentea-client/test_env.h"
namespace {
//const char *HTTP_SERVER_NAME = "utcnist.colorado.edu";
const char *HTTP_SERVER_NAME = "pool.ntp.org";
const int HTTP_SERVER_PORT = 123;
}
int main() {
GREENTEA_SETUP(20, "default_auto");
GREENTEA_SETUP(60, "default_auto");
bool result = false;
const time_t TIME1970 = 2208988800L;
int ntp_values[12] = {0};
int ntp_send_values[12] = {0};
int ntp_recv_values[12] = {0};
EthernetInterface eth;
//eth.init(); //Use DHCP
eth.connect();
printf("UDP client IP Address is %s\n", eth.get_ip_address());
UDPSocket sock;
sock.open(&eth);
sock.set_timeout(15000);
SocketAddress nist(&eth, HTTP_SERVER_NAME, HTTP_SERVER_PORT);
printf("UDP: NIST server %s address: %s on port %d\r\n", HTTP_SERVER_NAME, nist.get_ip_address(), nist.get_port());
memset(ntp_values, 0x00, sizeof(ntp_values));
ntp_values[0] = '\x1b';
memset(ntp_send_values, 0x00, sizeof(ntp_send_values));
ntp_send_values[0] = '\x1b';
int ret_send = sock.sendto(nist, (void*)ntp_values, sizeof(ntp_values));
printf("UDP: Sent %d Bytes to NTP server \n", ret_send);
while(1) {
memset(ntp_recv_values, 0x00, sizeof(ntp_recv_values));
const int n = sock.recvfrom(&nist, (void*)ntp_values, sizeof(ntp_values));
int ret_send = sock.sendto(nist, (void*)ntp_send_values, sizeof(ntp_send_values));
printf("UDP: Sent %d Bytes to NTP server \n", ret_send);
printf("UDP: Recved from NTP server %d Bytes \n", n);
const int n = sock.recvfrom(&nist, (void*)ntp_recv_values, sizeof(ntp_recv_values));
if (n > 0 ) {
result = true;
printf("UDP: Recved from NTP server %d Bytes \n", n);
printf("UDP: Values returned by NTP server: \n");
for (size_t i=0; i < sizeof(ntp_values) / sizeof(ntp_values[0]); ++i) {
printf("\t[%02d] 0x%X", i, ntohl(ntp_values[i]));
if (n > 0) {
result = true;
if (i == 10) {
time_t timestamp = ntohl(ntp_values[i]) - TIME1970;
printf("\tNTP timestamp is %s", ctime(&timestamp));
} else {
printf("\n");
printf("UDP: Values returned by NTP server: \n");
for (size_t i=0; i < sizeof(ntp_recv_values) / sizeof(ntp_recv_values[0]); ++i) {
printf("\t[%02d] 0x%X", i, ntohl(ntp_recv_values[i]));
if (i == 10) {
time_t timestamp = ntohl(ntp_recv_values[i]) - TIME1970;
printf("\tNTP timestamp is %s", ctime(&timestamp));
} else {
printf("\n");
}
}
break;
}
printf("Failed to receive data, retrying in 5 seconds...\n");
wait(5);
}
sock.close();