Thanks for the info, looks good. I actually found some better a better example and wrote the code below, if your interested. (Note there will be a few changes once I compile, I'm almost absolutely sure on that). Now comes the big questions:
1. How can I get the program to startup when the linux kernel starts up(keep in mind it is only a does prompt, like unix)?
2. Where can I find a C compiler?
I know that at least one of them is probably easy, but my only excuse is that it has been a very long day.
Hi !
I had a verry simple question to ask...
In unix when we create pipes.. the unnamed pipes that is...
is there any way to access those pipes outside the code ?
Another thing.. do sockets have an entry in the inode table ?
TIA,
Devyani. (1 Reply)
Hai,
How cani declare socket and collect the data in a string varialbe.
Since i am new to this i am asking this.
Can we connect multiple port.
Thank you. (6 Replies)
Is there a way to see what sockets are in use? The developers here are getting some defunct processes and they would like to get a socket list.
This is on a Solaris 8 machine.
Thanks! (1 Reply)
Is it possible to trace the packages and the statuses of client's and/or server's sockets by the UNIX network administrative tools?
Two applications interact via sockets. There is no problem if they stay in the same network segment. If their hosts connected through the firewall then they aren't... (4 Replies)
anyone and teach me how to save standard output to a file in a client/server socket. I know how to read them to the screen but i'm not quite sure how to save them to a file.
my read to screen file code:
memset(line, 0x0, LINE_ARRAY_SIZE);
while (recv(connectSocket, line, MAX_MSG, 0) >... (1 Reply)
Hi,i now moved into a different section where i need to use sockets.
i am completely nill in sockets.
can some body please provide me what are the requirements for a socket.
to use sockets in c.
thanks (1 Reply)
if i have a server which wants to connect to exactly 5 clients, does that mean i need 5 socket file descriptors and use
listen(socket_fd,1);
for each one
or just do
listen(socket_fd,5)
also whats the second parameter number mean? what happens if i put 0 there?
also if i am connected... (28 Replies)
hai guys,
I'm doing a project in which one server communicates with several clients. How can i do it when i have different port numbers???:confused: (0 Replies)
Hi, i am student, think learning about c++, someone has a example the how establish a conection with sockets :b::b: (1 Reply)
Discussion started by: mmartinez
1 Replies
LEARN ABOUT LINUX
getpeername
GETPEERNAME(2) Linux Programmer's Manual GETPEERNAME(2)NAME
getpeername - get name of connected peer socket
SYNOPSIS
#include <sys/socket.h>
int getpeername(int sockfd, struct sockaddr *addr, socklen_t *addrlen);
DESCRIPTION
getpeername() returns the address of the peer connected to the socket sockfd, in the buffer pointed to by addr. The addrlen argument
should be initialized to indicate the amount of space pointed to by addr. On return it contains the actual size of the name returned (in
bytes). The name is truncated if the buffer provided is too small.
The returned address is truncated if the buffer provided is too small; in this case, addrlen will return a value greater than was supplied
to the call.
RETURN VALUE
On success, zero is returned. On error, -1 is returned, and errno is set appropriately.
ERRORS
EBADF The argument sockfd is not a valid descriptor.
EFAULT The addr argument points to memory not in a valid part of the process address space.
EINVAL addrlen is invalid (e.g., is negative).
ENOBUFS
Insufficient resources were available in the system to perform the operation.
ENOTCONN
The socket is not connected.
ENOTSOCK
The argument sockfd is a file, not a socket.
CONFORMING TO
SVr4, 4.4BSD (the getpeername() function call first appeared in 4.2BSD), POSIX.1-2001.
NOTES
The third argument of getpeername() is in reality an int * (and this is what 4.x BSD and libc4 and libc5 have). Some POSIX confusion
resulted in the present socklen_t, also used by glibc. See also accept(2).
SEE ALSO accept(2), bind(2), getsockname(2), ip(7), socket(7), unix(7)COLOPHON
This page is part of release 3.27 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
Linux 2008-12-03 GETPEERNAME(2)