@ -10,12 +10,20 @@
# include <malloc.h>
# include <stdlib.h>
# include <unistd.h>
# include <pthread.h>
# include <sys/time.h>
# include <signal.h>
# include <time.h>
# define MSG_MAX 1024
# define STR_MAX 32
struct request {
char ip [ 32 ] ;
char port [ 32 ] ;
char msg [ MSG_MAX ] ;
} ;
static char *
remove_spaces ( char * str )
@ -28,6 +36,41 @@ remove_spaces(char *str)
return str ;
}
void *
send_fn ( void * d )
{
struct request * r = ( struct request * ) d ;
char resp [ STR_MAX ] = { 0 } ;
int fd = - 1 ;
struct sockaddr_in sa ;
sa . sin_family = AF_INET ;
sa . sin_port = htons ( atoi ( r - > port ) ) ;
sa . sin_addr . s_addr = inet_addr ( r - > ip ) ;
if ( ( fd = socket ( PF_INET , SOCK_DGRAM , 0 ) ) = = - 1 ) {
perror ( " Establishing socket " ) ;
return NULL ;
}
if ( sendto ( fd , r - > msg , strlen ( r - > msg ) , 0 , ( struct sockaddr * ) & sa , sizeof ( sa ) ) < 0 & &
errno ! = EINTR ) {
perror ( " sendto " ) ;
return NULL ;
}
//todo: select rcv from!
int sa_len = sizeof ( sa ) ;
if ( recvfrom ( fd , resp , STR_MAX , 0 , ( struct sockaddr * ) & sa , & sa_len ) < 0 ) {
perror ( " recvfrom " ) ;
}
printf ( " Done[%s]! \n " , resp ) ;
close ( fd ) ;
free ( r ) ;
return NULL ;
}
int main ( int argc , char * argv [ ] )
{
@ -47,10 +90,8 @@ int main(int argc, char *argv[])
char line [ MSG_MAX ] = { 0 } ;
while ( fgets ( line , MSG_MAX , f ) ! = NULL ) {
int fd = - 1 ;
struct sockaddr_in sa ;
char * msg = NULL , * tok , * src = line ;
char ip [ 32 ] = { 0 } , port [ 32 ] = { 0 } ;
char ip [ STR_MAX ] = { 0 } , port [ STR_MAX ] = { 0 } ;
src = remove_spaces ( src ) ;
if ( src [ 0 ] = = ' ; ' ) goto next ;
@ -67,32 +108,22 @@ int main(int argc, char *argv[])
printf ( " Exiting! \n " ) ;
exit ( 0 ) ;
} else if ( i = = 1 ) {
pthread_t t ;
printf ( " Proceeding! \n " ) ;
struct request * r = ( struct request * ) malloc ( sizeof ( struct request ) ) ;
strncpy ( r - > ip , ip , STR_MAX ) ;
strncpy ( r - > port , port , STR_MAX ) ;
strncpy ( r - > msg , msg , MSG_MAX ) ;
pthread_create ( & t , NULL , send_fn , r ) ;
} else {
printf ( " Skipping! \n " ) ;
goto next ;
}
sa . sin_family = AF_INET ;
sa . sin_port = htons ( atoi ( port ) ) ;
sa . sin_addr . s_addr = inet_addr ( ip ) ;
if ( ( fd = socket ( PF_INET , SOCK_DGRAM , 0 ) ) = = - 1 ) {
perror ( " Establishing socket " ) ;
return - 1 ;
}
if ( sendto ( fd , msg , strlen ( msg ) , 0 , ( struct sockaddr * ) & sa , sizeof ( sa ) ) < 0 & &
errno ! = EINTR ) {
perror ( " sendto " ) ;
return - 1 ;
}
printf ( " Done! \n " ) ;
next :
memset ( line , 0 , MSG_MAX ) ;
fflush ( stdin ) ;
fflush ( stdout ) ;
if ( fd > = 0 ) close ( fd ) ;
}
}
phani
5 years ago