int main(int argc, char * argv[])
{
int server_socket; //socket descriptor
seq_num = 0;
//setvbuf(stdin, (char *)NULL, _IOFBF, 0);
/* check command line arguments */
if(argc!= 4)
{
printf("usage: %s handle host-name port-number \n", argv[0]);
exit(1);
}
/* set up the socket for TCP transmission */
handle = strdup(argv[1]);
if (strlen(handle) > 256) {
printf("Handle must be less than 256 characters long\n");
}
server_socket = tcp_send_setup(argv[2], argv[3]);
while (1) {
tcp_send_recv(server_socket);
}
close(server_socket);
return 0;
}
int main(int argc, char * argv[])
{
int socket_num; //socket descriptor
char *send_buf; //data buffer
int bufsize= 0; //data buffer size
int send_len= 0; //amount of data to send
int sent= 0; //actual amount of data sent
/* check command line arguments */
if(argc!= 3)
{
printf("usage: %s host-name port-number \n", argv[0]);
exit(1);
}
/* set up the socket for TCP transmission */
socket_num = tcp_send_setup(argv[1], argv[2]);
/* initialize data buffer for the packet */
bufsize= 1024;
send_buf= (char *) malloc(bufsize);
/* get the data and send it */
printf("Enter the data to send: ");
send_len = 0;
while ((send_buf[send_len] = getchar()) != '\n' && send_len < 80) {
send_len++;
}
send_buf[send_len] = '\0';
/* now send the data */
sent = send(socket_num, send_buf, send_len, 0);
if(sent < 0)
{
perror("send call");
exit(-1);
}
printf("String sent: %s \n", send_buf);
printf("Amount of data sent is: %d\n", sent);
close(socket_num);
return 0;
}
int main(int argc, char * argv[])
{
int socket_num; //socket descriptor
char send_buf[BUF_SIZE]; //data buffer
int send_len= 0; //amount of data to send
char in_buf[BUF_SIZE]; //data buffer
char cmd_buf[CMD_SIZE];
int in_len = 0;
int sent= 0; //actual amount of data sent
u_int32_t seq = 0;
Header header;
int code = 0;
int err = 0;
int result = 0;
int print = 1;
fd_set readSet;
/* check command line arguments */
if(argc!= 4)
{
printf("usage: %s host-name port-number handle\n", argv[0]);
exit(1);
}
send_len = init_client(seq++, argv[3], send_buf);
/* set up the socket for TCP transmission */
socket_num= tcp_send_setup(argv[1], argv[2]);
send(socket_num, send_buf, send_len, 0);
/* get the data and send it */
do {
FD_ZERO(&readSet);
FD_SET(STDIN_FILENO, &readSet);
FD_SET(socket_num, &readSet);
Prompt(&print, &err);
result = select(socket_num + 1, &readSet, NULL, NULL, NULL);
if(result < 0) {
perror("select call");
exit(-1);
}
if (FD_ISSET(STDIN_FILENO, &readSet)) {
in_len = read(STDIN_FILENO, in_buf, BUF_SIZE);
sscanf(in_buf, " %3s", cmd_buf);
if (cmd_buf[2] == '\0' && cmd_buf[0] == '%') {
code = handle_cmd(cmd_buf[1], send_buf, argv[3], &header, in_buf + strlen(cmd_buf), in_len, &send_len, &print);
Send(&code, &sent, &seq, &socket_num, send_buf, &send_len);
}
else {
print = 1;
printf("Invalid command\n");
}
}
if(FD_ISSET(socket_num, &readSet)) {
in_len = recv(socket_num, in_buf, BUF_SIZE, 0);
if (in_len <= 0) {
err = 2;
printf("\nServer Terminated");
}
else {
err = handle_server_data(in_buf, argv[3], in_len, socket_num);
SetFlags(&err, &print);
}
}
} while(err != 2);
close(socket_num);
return 0;
}
