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When starting the Traffic Cop, check if the supplied host IP is the same as the waveforms. Use loopback if this is the case

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This commit is contained in:
Ed Gonzalez 2015-01-15 12:02:18 -06:00
parent b7707136bf
commit 72097c1f42
1 changed files with 44 additions and 1 deletions
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45
DSP_API/SmartSDR_Interface/traffic_cop.c
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@ -44,6 +44,7 @@
#include <time.h>
#include <sys/time.h>
#include <errno.h>
#include <ifaddrs.h>
#include "common.h"
#include "traffic_cop.h"
@ -613,8 +614,50 @@ void tc_Init(const char * hostname, const char * api_port)
output("NULL Hostname - tc_setHostname()\n");
return;
}
struct ifaddrs *ifaddr, *ifa;
int family, s, n;
char host[NI_MAXHOST];
BOOL use_loopback = FALSE;
if ( getifaddrs(&ifaddr) == -1 ) {
output("Error getting local interface addrs. Using ip supplied in discovery packet\n");
} else {
/* Walk through linked list of interfaces. */
ifa = ifaddr;
for ( n = 0; ifa != NULL; ifa = ifa->ifa_next, n++ ) {
if ( ifa->ifa_addr == NULL )
continue;
family = ifa->ifa_addr->sa_family;
/* Only care about IPV4 adresses */
if ( family == AF_INET ) {
s = getnameinfo(ifa->ifa_addr, sizeof(struct sockaddr_in), host, NI_MAXHOST, NULL, 0, NI_NUMERICHOST);
if ( s != 0 ) {
output("getnameinfo() failed: %s\n", gai_strerror(s));
continue;
} else {
/* We are on the same IP in the waveform and the radio hence we'll use local loopback interface instead
* of the radios IP
*/
if ( strncmp(hostname, host, NI_MAXHOST) == 0 ) {
use_loopback = TRUE;
output("We are on the same IP as the radio. Using loopback interface\n");
break;
}
}
} else {
continue;
}
}
}
if ( !use_loopback )
strncpy(_hostname, hostname, 31);
else
strncpy(_hostname, "127.0.0.1", 31);
strncpy(_hostname, hostname, 31);
strncpy(_api_port, api_port, 31);