Here's the Client side code:
int main (int argc, char *argv[]) {
int sd, rc, i, len, done;
struct sockaddr_in localAddr, servAddr;
struct hostent *h;
char mystr[] = "TS1\tTS2\tTS3\tTS4\tTS5\tTS6\tTS7\tTS8\r\n";
struct packet{
uint32_t dataSize;
uint16_t dataId;
uint8_t data[50];
} mypacket;
char *cptr;
void *vptr;
cptr = mypacket.data;
vptr = &mypacket;
//memset(&mypacket,0x0,sizeof(mypacket));
memset(vptr,0x0,sizeof(mypacket));
//sprintf((char *) &mypacket.data, "%s", mystr);
sprintf(cptr, "%s", mystr);
mypacket.dataSize = strlen(mystr) + 2;
mypacket.dataId = 0x0;
printf("&packet: 0x%x\n",&mypacket);
printf("\t.dataSize: 0x%x\n", &mypacket.dataSize);
printf("\t.dataId: 0x%x\n", &mypacket.dataId);
printf("\t.data: 0x%x\n\n", &mypacket.data);
printf("mypacket:\n");
printf("\t.dataSize: 0x%lx\n",mypacket.dataSize);
printf("\t.dataId: 0x%x\n",mypacket.dataId);
printf("\t.data: %s\n",mypacket.data);
printf("cptr: 0x%x\n", cptr);
printf("*cptr: 0x%x\n", *cptr);
printf("&cptr: 0x%x\n\n", &cptr);
printf("vptr: 0x%x\n", vptr);
// printf("*vptr: 0x%x\n", *vptr);
printf("&vptr: 0x%x\n", &vptr);
if(argc < 3) {
printf("usage: %s <server> <data1> <data2> ... <dataN>\n",argv[0]);
exit(1);
}
h = gethostbyname(argv[1]);
if(h==NULL) {
printf("%s: unknown host '%s'\n",argv[0],argv[1]);
exit(1);
}
servAddr.sin_family = h->h_addrtype;
memcpy((char *) &servAddr.sin_addr.s_addr, h->h_addr_list[0],h->h_length);
servAddr.sin_port = htons(SERVER_PORT);
/* create socket */
sd = socket(AF_INET, SOCK_STREAM, 0);
if(sd<0) {
perror("cannot open socket ");
exit(1);
}
/* bind any port number */
localAddr.sin_family = AF_INET;
localAddr.sin_addr.s_addr = htonl(INADDR_ANY);
localAddr.sin_port = htons(0);
rc = bind(sd, (struct sockaddr *) &localAddr, sizeof(localAddr));
if(rc<0) {
printf("%s: cannot bind port TCP %u\n",argv[0],SERVER_PORT);
perror("error ");
exit(1);
}
/* connect to server */
rc = connect(sd, (struct sockaddr *) &servAddr, sizeof(servAddr));
if(rc<0) {
perror("cannot connect ");
exit(1);
}
rc = send(sd, vptr, sizeof(mypacket),0);
printf("The no of bytes sent is %d \n", rc);
if(rc<0) {
perror("cannot send data ");
close(sd);
exit(1);
}
return 0;
}
Ankit M Shah
Ph: 916-832-2950.
[Non-text portions of this message have been removed]
