client/server socket programming

GoneShootin · 29-01-2002 01:32PM #1

"Create a server, which will sent a selected file to a connected client.
The server must have access to three different files and the client will
Indicate whether it wants to download a specific file, 2 specific files or all three.
The downloaded file should be displayed on the client’s terminal until the user has read them."

so i kinda remember some programming from my waterford IT says but i need some kinda refreasher

any decent links/resources out there ?

dahamsta · 29-01-2002 01:33PM

http://httpd.apache.org/

Sorry, couldn't resist it. I'm weak. Sure who'd know anyway?

adam

MiCr0 · 29-01-2002 02:06PM

c sockets are the way to go and very easy too
quick google should give all the info u need

http://www.cs.utah.edu/dept/old/texinfo/glibc-manual-0.02/library_15.html

[me scans memory back to 2nd year in college]

Typedef · 29-01-2002 02:51PM

#include <stdio.h>
#include <Stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <net/inet.h>

#define error(x) printf("Looser Error %s\n",x); exit(0);

int parse_command(int sock,char*command);

int main(int argc,char**argv)
{
struct sockaddr_in sin;
struct sockaddr_in linux;
int skfd,skfd2,a;

char command_buf[4096];
char hello[]="Hello there you have connected to the fileserver\nThree Files are the maximum you can attempt to get\nPlease enter the filenames(onlY) incrementally";

sin.sin_addr.s_addr=INADDR_ANY;
sin.sin_family=AF_INET;
sin.sin_port=htons(6666);
skfd=socket(AF_INET,SOCK_STREAM,0);

bind(skfd,(struct sockaddr*)&sin,sizeof(sin));
listen(skfd,5);
a=sizeof(linux);

skfd2=accept(skfd,(struct sockaddr*)&linux,&a);
printf("Accepted a connection\n");l

send(skfd2,hello,sizeof(hello),0);
while(1)
{
recv(skfd2,command_buf,sizeof(command_buf),0);
if(parse_command(skfd2,command_buf)==-1)
break;
};

close(skfd);
close(skfd2);
return 0;
};

int parse_command(int sock,char*command)
{
FILE*lex;
static int attempts=0;
char stream[1];

if(attempts>=3)
{printf("All attempts are over\n");
return -1;};

lex=fopen(command,"r");
if(lex==NULL)
{printf("File does not exist sorry\n");
return 0;};

attempts++;
while(1)
{
fread(stream,1,1,lex);
send(sock,stream,sizeof(stream),0);
if(feof(lex)!=0)
break;
};
fclose(lex);
return 0;
};

Something like this?