int SendDataUDPNop()
{
return (SendDataUDP(PacketSendSize,PacketSendArray));
}
int main(int argc, char *argv[])
{
int count; /* buffers to send */
unsigned long int size; /* bytes to send */
int fd, TCPsock;
struct sockaddr client_addr; /* the address of the client */
struct sockaddr_in sad; /* Address of the server */
struct hostent *hp;
struct protoent *ptrp; /* pointer to a protocol table entry */
char buf[MAXBUF]; /* buffer to hold datagram */
int port; /* server port */
int i;
double s1,s2,total;
char *slash;
float rate;
float initwindow; /* max packets in flight */
char action[4]; /* denotes the current send or recv */
int retval;
char *targets;
int temp_addr;
char *ports;
int connectfd;
fprintf(stderr,"\nSINGLE UDP DATA MOVER:\n%s %s %s %s %s %s <<%s>>\n\n",
argv[0],argv[1],argv[2],argv[3],argv[4],argv[5],argv[6]);
if (argc != 7 && argc != 8){
printf("Usage: %s <target_host> <port remotefile> <srcfile_descriptor> <srcfile_size> <IBP_srccap>\n",
argv[0]);
exit(3);
}
strcpy(glb.IBP_cap,argv[6]);
targets=argv[1];
ports=argv[2];
/* Map TCP transport protocol name to protocol number */
if (((int)(ptrp = getprotobyname("tcp"))) == 0) {
fprintf(stderr, "cannot map \"tcp\" to protocol number");
exit(1);
}
/* ----------- Create a TCP socket --------------- */
TCPsock = socket(PF_INET, SOCK_STREAM, ptrp->p_proto);
if (TCPsock < 0) {
fprintf(stderr, "socket creation failed\n");
exit(1);
}
/* Host and port come from input arguments and from server */
/* Fill in the server's TCP address */
hp = gethostbyname(argv[1]);
if(hp == NULL) {
fprintf(stderr, "%s: unknown host",argv[1]);
printf("Error h_errno %d\n", h_errno);
exit(2);
}
fprintf(stderr,"--->after gethost\n");
bzero((char *)&sad, sizeof(sad));
sad.sin_family = AF_INET;
bcopy((char *)hp->h_addr, (char *)&sad.sin_addr, hp->h_length);
sad.sin_port = htons((u_short)atoi(argv[2]));
/* Connect the socket to the specified server */
if (connect(TCPsock, (struct sockaddr *)&sad, sizeof(sad)) < 0) {
perror("connect failed");
exit(1);
}
fprintf(stderr,"after connect \n");
/* -------- create a UDP socket --------------- */
UDPsock = socket(AF_INET, SOCK_DGRAM, 0);
if(UDPsock < 0) {
perror("Opening datagram socket");
exit(1);
}
bzero((char *)&name1, sizeof(name1));
name1.sin_family = AF_INET;
name1.sin_addr.s_addr = sad.sin_addr.s_addr;
name1.sin_port =/* 0*/htons((u_short)atoi(argv[2]));;
length1 = sizeof(name1);
/* ----------------- get the server port ------------------ */
recv(TCPsock, &name1.sin_port, sizeof(name1.sin_port), 0);
if (sendto(UDPsock, argv[3], strlen(argv[3])+1, 0, (struct sockaddr *)&name1, sizeof(name1)) < 0)
perror("Couldn't send filename");
initwindow = (argc == 6) ? atoi(argv[5]) : MINWIN; /* decide initwindow */
fd = atoi(argv[3]);
size = atol(argv[4]);
count = ((size-1) / MAXLOAD) + 1; /* compute # blocks of file */
/* --- get file size needs to know how many blocks to transfer --- */
if ((read(TCPsock, buf, MAXBUF*sizeof(char)) < 0))
perror("Couldn't read file size");
/**fprintf(stderr,"count-->%d total size-->%ld UDPsock-->%d fd-->%d initwindow=%f\n",
count,size,UDPsock,fd,initwindow); debug */
s1 = seconds();
retval = SendDataUDP(fd,UDPsock,size,count,initwindow); /* Send Data through socket */
s2 = seconds();
total = s2-s1;
rate = (total !=0) ? size/(1024.0*1024*(total)) : 0;
fprintf(stderr,"\nsize = %d, time=%6.2f xfer rate = %.2f MB/s (%.2fMb/s)\n",
size, total, rate, rate*8);
close(fd);
exit(0);
}
