Code:
#include <sys/socket.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <netdb.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#define BUF 2048
int main()
{
int sock, bytes_received;
char send_data[BUF],recv_data[BUF];
struct hostent *host;
struct sockaddr_in server_addr;
host = gethostbyname("134.124.30.128");
if ((sock = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
perror("Socket");
exit(1);
}
server_addr.sin_family = AF_INET;
server_addr.sin_port = htons(13018);
server_addr.sin_addr = *((struct in_addr *)host->h_addr);
bzero(&(server_addr.sin_zero),8);
if (connect(sock, (struct sockaddr *)&server_addr,
sizeof(struct sockaddr)) == -1)
{
perror("Connect");
exit(1);
}
while(1)
{
bytes_received = recv(sock, recv_data, BUF, 0);
recv_data[bytes_received] = '\0';
if (strcmp(recv_data , "q") == 0 || strcmp(recv_data , "Q") == 0)
{
close(sock);
break;
}
else
printf("\nRecieved data = %s " , recv_data);
printf("\nSEND (q or Q to quit) : ");
gets(send_data);
if (strcmp(send_data , "q") != 0 && strcmp(send_data , "Q") != 0)
send(sock,send_data,strlen(send_data), 0);
else
{
send(sock,send_data,strlen(send_data), 0);
close(sock);
break;
}
}
return 0;
}
and what I believe is the relevant server code:
Code:
#include "classes.h"
int main(void)
{
int switchInput;
int i = 0;
int connected;
int sock;
int bytes_received;
int sin_size;
int true = 1;
int tempCourse = 0;
char send_data[BUF];
char recv_data[BUF];
char tempDept[5];
char tempDay[2];
char tempTime[2];
FILE *filePointer;
sched_record data[MAX_RECORD];
filePointer = fopen (BINFILE, "rb");
if ((sock = socket (AF_INET, SOCK_STREAM, 0)) == -1) {
perror ("Socket");
exit(1);
}
if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &true, sizeof(int)) == -1) {
perror ("Setsocketopt");
exit(1);
}
self.sin_family = AF_INET;
self.sin_port = htons(13018);
bzero(&(self.sin_zero), 8);
self.sin_addr.s_addr = inet_addr ("134.124.30.128");
if (bind (sock, (struct sockaddr *)(&self), sizeof (self)) < 0) {
perror ("Unable to bind");
exit(1);
}
if (listen(sock, 5) == -1) {
perror("Listen");
exit(1);
}
if (filePointer == NULL) {
perror("**Can't open file**");
exit(1);
}
printf("\nTCPServer waiting for client on port 13018");
fflush(stdout);
while(1) {
sin_size = sizeof(struct sockaddr_in);
connected = accept(sock, (struct sockaddr *)&client_addr, &sin_size);
printf("\n I got a connection from (%s, %d)",
inet_ntoa(client_addr.sin_addr), ntohs(client_addr.sin_port));
printf("\n");
char send_data[] = "Server is Ready";
send(connected, send_data, strlen(send_data), 0);
while(1) {
bytes_received = recv(connected, recv_data, BUF, 0);
recv_data[bytes_received] = '\0';
switchInput = atoi (recv_data);
switch(switchInput) {
case 1:
fread(data, sizeof(sched_record), MAX_RECORD, filePointer);
fclose(filePointer);
char send_data[] = "Enter Department Name";
send(connected, send_data, strlen(send_data), 0);
bytes_received = recv(connected, recv_data, BUF, 0);
recv_data[bytes_received] = '\0';
strcpy(tempDept, recv_data);
for (i=0; i<MAX_RECORD; i++){
if ((strcmp(tempDept, data[i].Dept)==0) && tempCourse != data[i].course){
sprintf(send_data,"%s %d", data[i].Dept, data[i].course);
send(connected, send_data, strlen(send_data), 0);
tempCourse = data[i].course;
}
}
break;
case 2:
fread(data, sizeof(sched_record), MAX_RECORD, filePointer);
fclose(filePointer);
char send_data_1[] = "Enter Department Name";
send(connected, send_data_1, strlen(send_data_1), 0);
bytes_received = recv(connected, recv_data, BUF, 0);
recv_data[bytes_received] = '\0';
strcpy(tempDept, recv_data);
char send_data_2[] = "Enter Course Number";
send(connected, send_data_2, strlen(send_data_2), 0);
bytes_received = recv(connected, recv_data, BUF, 0);
recv_data[bytes_received] = '\0';
tempCourse = atoi (recv_data);
qsort(data, MAX_RECORD, sizeof(sched_record), sortFunction);
for (i=0; i < MAX_RECORD; i++){
if ((strcmp(tempDept, data[i].Dept)==0) && tempCourse == data[i].course){
sprintf(send_data, "%s %d %d %2s %02d%02d %02d%02d %s", data[i].Dept, data[i].course, data[i].sect,
data[i].meet_days == MW ? "MW" : "TR", data[i].start.hour, data[i].start.min, data[i].end.hour, data[i].end.min,
data[i].instr);
send(connected, send_data, strlen(send_data), 0);
}
}
break;
This is the last thing I need to figure out and I have been at it all day. I would really appreciate it if someone can show me. Thank You!