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#include <assert.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
/**
* \brief Default unix socket path (the leading \0 means using the abstract
* namespace instead of the filesystem).
*/
#define UNIX_PATH "\0updownsrv"
int main() {
struct sockaddr_un addr;
char buf[100];
int fd,rc;
char * socket_path = UNIX_PATH;
if ( (fd = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) {
perror("socket error");
exit(-1);
}
memset(&addr, 0, sizeof(addr));
addr.sun_family = AF_UNIX;
if (*socket_path == '\0') {
*addr.sun_path = '\0';
strncpy(addr.sun_path+1, socket_path+1, sizeof(addr.sun_path)-2);
} else {
strncpy(addr.sun_path, socket_path, sizeof(addr.sun_path)-1);
}
if (connect(fd, (struct sockaddr*)&addr, sizeof(addr)) == -1) {
perror("connect error");
exit(-1);
}
printf("Waiting for server data...\n");
while( (rc=read(fd, buf, sizeof(buf))) > 0) {
assert(rc == 1);
switch(buf[0]) {
case '\0':
printf("WiFi\n");
break;
case '\1':
printf("LTE\n");
break;
default:
printf("Unknown\n");
break;
}
}
return 0;
}
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